PKOH / Park-Ohio Holdings Corp. - SEC Filings, Annual Report, Proxy Statement

Park-Ohio Holdings Corp.
US ˙ NasdaqGS ˙ US7006661000

Basic Stats
CIK 76282
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Park-Ohio Holdings Corp.
SEC Filings (Chronological Order)
This page provides a complete, chronological list of SEC Filings, excluding ownership filings which we provide elsewhere.
August 7, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 00

August 6, 2025 EX-99

ParkOhio Announces Second Quarter 2025 Results

ParkOhio Announces Second Quarter 2025 Results Q2 FY25 Highlights •GAAP EPS from continuing operations of $0.

August 6, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 6, 2025 Commission file num

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 6, 2025 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpo

July 31, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 31, 2025 PARK-OHIO HOLDINGS C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 31, 2025 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File

July 31, 2025 EX-4.1

Indenture, dated July 31, 2025, among Park-Ohio Industries, Inc., the Guarantors (as defined therein) and Computershare Trust Company, N.A., as trustee and notes collateral agent (including Form of Note).

EX-4.1 Exhibit 4.1 Execution Version PARK-OHIO INDUSTRIES, INC. AND EACH OF THE GUARANTORS PARTY HERETO 8.500% SENIOR SECURED NOTES DUE 2030 INDENTURE Dated as of July 31, 2025 Computershare Trust Company, N.A. Trustee and Notes Collateral Agent TABLE OF CONTENTS ARTICLE 1 DEFINITIONS AND INCORPORATION BY REFERENCE   Section 1.01 Definitions 1   Section 1.02 Other Definitions 28   Section 1.03 Lim

July 18, 2025 EX-99.1

Park-Ohio Announces $350 Million Senior Secured Notes Offering

Exhibit 99.1 Park-Ohio Announces $350 Million Senior Secured Notes Offering CLEVELAND, OHIO – Park-Ohio Industries, Inc. (the “Company”), a subsidiary of Park-Ohio Holdings Corp. (NASDAQ: PKOH), today announced that it intends to offer $350.0 million aggregate principal amount of senior secured notes due 2030 (the “Notes”), subject to market and customary conditions, in a private offering that is

July 18, 2025 EX-99.2

Park-Ohio Prices $350 Million Senior Secured Notes Offering

Exhibit 99.2 Park-Ohio Prices $350 Million Senior Secured Notes Offering CLEVELAND, OHIO – Park-Ohio Industries, Inc. (the “Company”), a subsidiary of Park-Ohio Holdings Corp. (NASDAQ: PKOH), today announced that it has priced its offering of $350.0 million aggregate principal amount of senior secured notes due 2030 (the “Notes”), subject to market and customary conditions, in a private offering t

July 18, 2025 8-K

Entry into a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 15, 2025 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File

July 16, 2025 EX-99.1

ParkOhio Announces Preliminary Second Quarter 2025 Results

EX-99.1 Exhibit 99.1 ParkOhio Announces Preliminary Second Quarter 2025 Results CLEVELAND, OHIO – Park-Ohio Holdings Corp. (NASDAQ: PKOH) today announced preliminary financial results for the second quarter of 2025. While the Company has not yet finalized its financial results for the three months ended June 30, 2025, based on its unaudited preliminary analysis, it estimates that its total net sal

July 16, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 15, 2025 PARK-OHIO HOLDINGS C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 15, 2025 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File

June 20, 2025 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 ¨ TRANSITION REPORT PURSUANT TO SECTION 15

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 or ¨ TRANSITION REPORT PURSUANT TO SECTION 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 0-3134 A. Full title of the p

May 30, 2025 EX-1.01

Conflict Minerals Report of Park-Ohio Holdings Corp. for the reporting period from January 1, 2024 to December 31, 2024

Exhibit 1.02 Park-Ohio Holdings Corp. Conflict Minerals Report For the reporting period from January 1, 2024 to December 31, 2024 Introduction This Conflict Minerals Report (“Report”) for the Company has been prepared pursuant to Rule 13p-1 and Form SD promulgated under the Securities Exchange Act of 1934, as amended (the “Rules”), for the reporting period from January 1, 2024 through December 31,

May 30, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-031341 34-1867219 (State or other jurisdiction (Commission (IRS Employer of incorporation or organization) File Number) Identification No.) 6065 Parkland Blvd. Cleveland, Ohio 44124 (Address of princip

May 27, 2025 EX-FILING FEES

Filing Fee Table

EXHIBIT 107 Calculation of Filing Fee Tables Form S-8 (Form Type) PARK-OHIO HOLDINGS CORP.

May 27, 2025 S-8

As filed with the Securities and Exchange Commission on May 27, 2025

As filed with the Securities and Exchange Commission on May 27, 2025 Registration No.

May 27, 2025 EX-24.1

Power of Attorney

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of Park-Ohio Holdings Corp., an Ohio corporation (the “Corporation”), hereby constitutes and appoints Matthew V. Crawford and Robert D. Vilsack, and each of them, as the true and lawful attorney-in-fact or attorneys-in-fact, with full power of substitution and resubstitution, for each

May 21, 2025 EX-10.1

Park-Ohio Holdings Corp. 2021 Equity and Incentive Compensation Plan (Amended and Restated Effective May 15, 2025)

Exhibit 10.1 PARK-OHIO HOLDINGS CORP. 2021 EQUITY AND INCENTIVE COMPENSATION PLAN (amended and restated effective May 15, 2025) 1. Purpose. The purpose of this Plan is to permit award grants to non-employee Directors, officers and other employees of the Company and its Subsidiaries, and certain consultants to the Company and its Subsidiaries, and to provide to such persons incentives and rewards f

May 21, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 15, 2025 Commission file number: 000-03134 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpora

May 15, 2025 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 15, 2025 Commission file number: 000-03134 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpora

May 7, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 0

May 6, 2025 EX-99.1

ParkOhio Announces First Quarter 2025 Results

ParkOhio Announces First Quarter 2025 Results •Net sales of $405 million compared to $418 million in Q1 2024 •GAAP EPS from continuing operations of $0.

May 6, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 6, 2025 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorporat

April 8, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6

March 6, 2025 EX-21.1

List of Subsidiaries of Park-Ohio Holdings Corp.

Exhibit 21.1 List of Subsidiaries Company Name Jurisdiction Organized Ajax Tocco de Mexico, S.A. de C.V. Mexico Ajax Tocco International Limited England Ajax Tocco Magnethermic Corporation (1) Ohio Ajax Tocco Magnethermic Corporation Canada Limited Canada Ajax Tocco Magnethermic GmbH Germany Ajax Tocco Magnethermic Japan Co., Ltd. Japan Ajax Tocco Magnethermic Limited Hong Kong Ajax Tocco Magnethe

March 6, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 000-03

March 6, 2025 EX-19.1

Insider Trading Policy

Insider Trading Policy Scope: Global Owner: Chief Legal Officer ([email protected]) Effective: November 2017 1 1PURPOSE To establish rules and restrictions for trading in the capital stock or other securities, such as bonds, options, derivative instruments, etc. (the “Securities”) of Park-Ohio Holdings Corp. (together with its affiliates and subsidiaries, “ParkOhio” or “Company”); and to en

March 6, 2025 EX-24.1

Power of Attorney

Exhibit 24.1 PARK-OHIO HOLDINGS CORP. FORM 10-K POWER OF ATTORNEY Each of the undersigned officers and directors of Park-Ohio Holdings Corp., an Ohio corporation, hereby constitutes and appoints Patrick W. Fogarty and Robert D. Vilsack, and each of them, as his true and lawful attorney or attorneys-in-fact, with full power of substitution and revocation, for each of the undersigned and in the name

March 5, 2025 EX-99.1

ParkOhio Announces Fourth Quarter and Full Year 2024 Results

EXHIBIT 99.1 ParkOhio Announces Fourth Quarter and Full Year 2024 Results Fourth quarter: •Net sales from continuing operations of $388 million •GAAP EPS from continuing operations of $0.41 per diluted share vs. $0.54 in Q4 2023 •Adjusted EPS from continuing operations of $0.67 per diluted share, up 24% vs. $0.54 in Q4 2023 •Income from continuing operations of PKOH shareholders of $5.6 million vs

March 5, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 5, 2025 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpor

November 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file numbe

November 6, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 6, 2024 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incor

November 6, 2024 EX-99.1

ParkOhio Announces Strong Third Quarter 2024 Results

ParkOhio Announces Strong Third Quarter 2024 Results •Net sales of $418 million compared to $419 million in Q3 2023 •Gross margin of 17.

September 26, 2024 SC 13D/A

PKOH / Park-Ohio Holdings Corp. / PARK OHIO HOLDINGS CORP - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D (Rule 13d-101) Information to Be Included in Statements Filed Pursuant to Rule 13d-1(a) and Amendments Thereto Filed Pursuant to Rule 13d-2(a) Under the Securities Exchange Act of 1934 (Amendment No. 7) Park-Ohio Holdings Corp. (Name of Issuer) Common Stock, par value $1.00 per Share (Title of Class of Securities)

September 26, 2024 SC 13D/A

PKOH / Park-Ohio Holdings Corp. / PARK OHIO HOLDINGS CORP - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D (Rule 13d-101) Information to Be Included in Statements Filed Pursuant to Rule 13d-1(a) and Amendments Thereto Filed Pursuant to Rule 13d-2(a) Under the Securities Exchange Act of 1934 (Amendment No. 2) Park-Ohio Holdings Corp. (Name of Issuer) Common Stock, par value $1.00 per Share (Title of Class of Securities)

September 5, 2024 CORRESP

* * * * * * * *

September 5, 2024 CORRESPONDENCE FILING VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance Disclosure Review Program 100 F Street, N.E. Washington, D.C. 20549 Attention: Aliya Ishmukhamedova Laura Nicholson Re: Park-Ohio Holdings Corp. Definitive Proxy Statement on Schedule 14A Filed April 17, 2024 File No. 000-03134 Ladies and Gentlemen: Park-Ohio Holdings Corp., an

August 27, 2024 8-K

Unregistered Sales of Equity Securities

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 26, 2024 Commission file number: 000-03134 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorp

August 23, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 23, 2024 Commission file number: 000-03134 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorp

August 22, 2024 424B5

341,997 Shares Park-Ohio Holdings Corp. Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-279399 PROSPECTUS SUPPLEMENT (To Prospectus Dated May 23, 2024) 341,997 Shares Park-Ohio Holdings Corp. Common Stock We are offering 341,997 shares of our common stock pursuant to a stock purchase agreement, dated as of August 21, 2024, or the Purchase Agreement, between us and U.S. Bank National Association, as a trustee, or

August 8, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 00

August 8, 2024 EX-4.1

Amendment No. 9 to the Seventh Amended and Restated Credit Agreement, dated April 10, 2024, Park-Ohio Industries, Inc., RB&W Corporation of Canada, the European Borrowers (as defined therein) party thereto, the other Loan Parties (as defined therein), the Lenders (as defined therein), JPMorgan Chase Bank, N.A., as administrative agent, JPMorgan Chase Bank, N.A., Toronto Branch, as Canadian agent, J.P. Morgan Europe Limited, as European agent and J.P. Morgan Securities Inc., as sole lead arranger and bookrunning manager

4870-4707-8315v3 1075.162 AMENDMENT NO. 9 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT This AMENDMENT NO. 9 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT (this "Amendment") is effective as of April 10, 2024, and is entered into by and among PARK-OHIO INDUSTRIES, INC. ("Company"), RB&W CORPORATION OF CANADA ("Canadian Borrower"), the EUROPEAN BORROWERS party to the Credit Agreement, the othe

August 7, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 7, 2024 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpo

August 7, 2024 EX-99.1

ParkOhio Announces Record Net Sales and Strong Second Quarter 2024 Results

ParkOhio Announces Record Net Sales and Strong Second Quarter 2024 Results •Record net sales of $433 million compared to $428 million in Q2 2023 •Gross margin of 16.

June 14, 2024 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 ¨ TRANSITION REPORT PURSUANT TO SECTION 15

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 or ¨ TRANSITION REPORT PURSUANT TO SECTION 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 0-3134 A. Full title of the p

June 3, 2024 424B5

$50,000,000 Park-Ohio Holdings Corp. Common Stock

Filed Pursuant to Rule 424(b)(5) Registration No. 333-279399 PROSPECTUS SUPPLEMENT (To Prospectus Dated May 23, 2024) $50,000,000 Park-Ohio Holdings Corp. Common Stock We may offer and sell up to $50,000,000 in the aggregate of shares of our common stock from time to time through KeyBanc Capital Markets Inc., which we refer to as the sales agent, under an equity distribution agreement. Our common

June 3, 2024 EX-1.1

Equity Distribution Agreement, dated as of June 3, 2024, by and between Park-Ohio Holdings Corp. and KeyBanc Capital Markets Inc.

Exhibit 1.1 PARK-OHIO HOLDINGS CORP. Up to $50,000,000 of Common Stock EQUITY DISTRIBUTION AGREEMENT Dated: June 3, 2024 Table of Contents Page Section 1. Description of Securities. 1 Section 2. Placements. 2 Section 3. Sale of Placement Securities by the Agent. 2 Section 4. Suspension of Sales 3 Section 5. Representations and Warranties. 3 Section 6. Sale and Delivery to the Agent; Settlement. 15

June 3, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 3, 2024 Commission file number: 000-03134 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpora

May 31, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-031341 34-1867219 (State or other jurisdiction (Commission (IRS Employer of incorporation or organization) File Number) Identification No.) 6065 Parkland Blvd. Cleveland, Ohio 44124 (Address of princip

May 31, 2024 EX-1.01

Conflict Minerals Report of Park-Ohio Holdings Corp. for the reporting period from January 1, 2023 to December 31, 2023

Exhibit 1.02 Park-Ohio Holdings Corp. Conflict Minerals Report For the reporting period from January 1, 2023 to December 31, 2023 Introduction This Conflict Minerals Report (“Report”) for the Company has been prepared pursuant to Rule 13p-1 and Form SD promulgated under the Securities Exchange Act of 1934, as amended (the “Rules”), for the reporting period from January 1, 2023 through December 31,

May 23, 2024 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 23, 2024 Commission file number: 000-03134 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpora

May 21, 2024 CORRESP

Park-Ohio Holdings Corp. 6065 Parkland Boulevard Cleveland, Ohio 44124 May 21, 2024

Park-Ohio Holdings Corp. 6065 Parkland Boulevard Cleveland, Ohio 44124 May 21, 2024 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, NE Washington, D.C. 20549 Attn: Erin Donahue Re: Park-Ohio Holdings Corp. Registration Statement on Form S-3 (File No. 333-279399) Ladies and Gentlemen: On behalf of Park-Ohio Holdings Corp. (the “Company”), the

May 14, 2024 EX-24.1

Power of Attorney

EXHIBIT 24.1 REGISTRATION STATEMENT ON FORM S-3 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of PARK-OHIO HOLDINGS CORP., an Ohio corporation (the “Corporation”), hereby constitutes and appoints Matthew V. Crawford, Patrick W. Fogarty and Robert D. Vilsack, and each of them, as the true and lawful attorney-in-fact or attorneys-in-fact, with

May 14, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Park-Ohio Holdings Corp.

May 14, 2024 EX-4.3

Form of Debt Securities Indenture

Exhibit 4.3 PARK-OHIO HOLDINGS CORP. INDENTURE Dated as of [ ] [ ], as Trustee CROSS-REFERENCE TABLE* Trust Indenture Act Section Indenture Section 310(a)(1) 7.10 (a)(2) 7.10 (a)(3) N.A. (a)(4) N.A. (a)(5) 7.10 (b) 7.10 (c) N.A. 311(a) 7.11 (b) 7.11 (c) N.A. 312(a) 2.06 (b) 11.03 (c) 11.03 313(a) 7.06 (b)(2) 7.06; 7.07 (c) 7.06; 11.02 (d) 7.06 314(a) 4.03; 4.04; 11.05 (b) N.A. (c)(l) 11.04 (c)(2)

May 14, 2024 S-3

As filed with the Securities and Exchange Commission on May 14, 2024

As filed with the Securities and Exchange Commission on May 14, 2024 Registration No.

April 30, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 0

April 29, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 29, 2024 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpo

April 29, 2024 EX-99.1

ParkOhio Announces Strong First Quarter 2024 Results

ParkOhio Announces Strong First Quarter 2024 Results •Net sales of $418 million compared to $424 million in Q1 2023 •GAAP EPS from continuing operations improved 36% to $0.

April 17, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6

March 6, 2024 EX-97.1

Policy relating to recovery of erroneously awarded compensation

EXHIBIT 97.1 PARK-OHIO HOLDINGS CORP. CLAWBACK POLICY Effective November 8, 2023 Purpose As required pursuant to the listing standards of the Nasdaq Stock Market LLC (the “Stock Exchange”), Section 10D of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and Rule 10D-1 under the Exchange Act, the Board of Directors (the “Board”) of Park-Ohio Holdings Corp. (the “Company”) has a

March 6, 2024 EX-21.1

List of Subsidiaries of Park-Ohio Holdings Corp.

Exhibit 21.1 List of Subsidiaries Company Name Jurisdiction Organized Ajax Tocco de Mexico, S.A. de C.V. Mexico Ajax Tocco International Limited England Ajax Tocco Magnethermic Corporation (1) Ohio Ajax Tocco Magnethermic Corporation Canada Limited Canada Ajax Tocco Magnethermic GmbH Germany Ajax Tocco Magnethermic Holdco S.r.l. Italy Ajax Tocco Magnethermic Japan Co., Ltd. Japan Ajax Tocco Magnet

March 6, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 000-03

March 6, 2024 EX-24.1

Power of Attorney

Exhibit 24.1 PARK-OHIO HOLDINGS CORP. FORM 10-K POWER OF ATTORNEY Each of the undersigned officers and directors of Park-Ohio Holdings Corp., an Ohio corporation, hereby constitutes and appoints Patrick W. Fogarty and Robert D. Vilsack, and each of them, as his true and lawful attorney or attorneys-in-fact, with full power of substitution and revocation, for each of the undersigned and in the name

March 5, 2024 EX-99.1

ParkOhio Announces Fourth Quarter and Full Year 2023 Results and the Acquisition of EMA Indutec GmbH

EXHIBIT 99.1 ParkOhio Announces Fourth Quarter and Full Year 2023 Results and the Acquisition of EMA Indutec GmbH Fourth quarter: •Net sales from continuing operations of $389 million, up 2% year-over-year •GAAP EPS from continuing operations of $0.54 per diluted share, up from a loss of $(0.58) per diluted share a year ago •Q4 results impacted by United Auto Workers strike at light vehicle and he

March 5, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 5, 2024 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpor

February 9, 2024 SC 13G/A

PKOH / Park-Ohio Holdings Corp. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6 )* Park-Ohio Holdings Corp (Name of Issuer) Common Stock (Title of Class of Securities) 700666100 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate bo

November 2, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file numbe

November 1, 2023 EX-99.1

ParkOhio Announces Strong Third Quarter 2023 Results

ParkOhio Announces Strong Third Quarter 2023 Results •Net sales of $419 million, increased 9% from $384 million in Q3 2022 ◦Record year-to-date sales; expected record full year sales •GAAP EPS from continuing operations of $0.

November 1, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 1, 2023 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incor

September 18, 2023 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 13, 2023 Commission file number: 000-03134 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of inc

September 18, 2023 EX-4.1

Consent and Amendment No. 8 to the Seventh Amended and Restated Credit Agreement, dated September 13, 2023, among Park-Ohio Industries, Inc., RB&W Corporation of Canada, the European Borrowers (as defined therein) party thereto, the other Loan Parties (as defined therein), the Lenders (as defined therein), JPMorgan Chase Bank, N.A., as administrative agent, JPMorgan Chase Bank, N.A., Toronto Branch, as Canadian agent, J.P. Morgan Europe Limited, as European agent and J.P. Morgan Securities Inc., as sole lead arranger and bookrunning manager (filed as Exhibit 4.1 to Form 8-K of Park-Ohio Holdings Corp. filed on September 18, 2023, SEC File No. 000-03134 and incorporated herein by reference).

August 18, 2023 8-K/A

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 17, 2023 Commission file number: 000-03134 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other juris

August 3, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 00

August 2, 2023 EX-99.1

ParkOhio Announces Record Net Sales and Strong Second Quarter 2023 Results

ParkOhio Announces Record Net Sales and Strong Second Quarter 2023 Results •Net sales of $428 million, increased 16% from $370 million in Q2 2022 •GAAP EPS from continuing operations of $0.

August 2, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 2, 2023 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpo

June 22, 2023 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 ¨ TRANSITION REPORT PURSUANT TO SECTION 15

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 or ¨ TRANSITION REPORT PURSUANT TO SECTION 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 0-3134 A. Full title of the p

May 30, 2023 EX-1.01

Conflict Minerals Report of Park-Ohio Holdings Corp. for the reporting period from January 1, 2022 to December 31, 2022

EX-1.01 2 ex-1022023.htm EX-1.01 Exhibit 1.02 Park-Ohio Holdings Corp. Conflict Minerals Report For the reporting period from January 1, 2022 to December 31, 2022 Introduction This Conflict Minerals Report (“Report”) for the Company has been prepared pursuant to Rule 13p-1 and Form SD promulgated under the Securities Exchange Act of 1934, as amended (the “Rules”), for the reporting period from Jan

May 30, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction (Comm

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction (Commission (IRS Employer of incorporation or organization) File Number) Identification No.) 6065 Parkland Blvd. Cleveland, Ohio 44124 (Address of principa

May 23, 2023 S-8

Park-Ohio Holdings Corp. 2021 Equity and Incentive Compensation Plan (Amended and Restated Effective May 17, 2023) (incorporated by reference to exhibit 4.3 to the Company’s Registration Statement on Form S-8 filed on May 23, 2023, Registration No. 333-225915) and incorporated by reference and made a part hereof)

As filed with the Securities and Exchange Commission on May 23, 2023 Registration No.

May 23, 2023 EX-24.1

Power of Attorney

EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of Park-Ohio Holdings Corp., an Ohio corporation (the “Corporation”), hereby constitutes and appoints Matthew V. Crawford and Robert D. Vilsack, and each of them, as the true and lawful attorney-in-fact or attorneys-in-fact, with full power of substitution and resubstitution, for each

May 23, 2023 EX-4.3

2021 Equity and Incentive Compensation Plan (Amended and Restated Effective May 17, 2023) (filed as Exhibit 4.3 to Form S-8 of Park-Ohio Holdings Corp., filed on May 18, 2023, SEC File No. 333-272137 and incorporated by reference and made a part hereof)

EXHIBIT 4.3 PARK-OHIO HOLDINGS CORP. 2021 EQUITY AND INCENTIVE COMPENSATION PLAN (Amended and Restated Effective May 17, 2023) 1.Purpose. The purpose of this Plan is to permit award grants to non-employee Directors, officers and other employees of the Company and its Subsidiaries, and certain consultants to the Company and its Subsidiaries, and to provide to such persons incentives and rewards for

May 23, 2023 EX-FILING FEES

Filing Fe

EXHIBIT 107 Calculation of Filing Fee Tables Form S-8 (Form Type) PARK-OHIO HOLDINGS CORP.

May 18, 2023 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 17, 2023 Commission file number: 000-03134 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpora

May 4, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 0

May 3, 2023 EX-99.1

ParkOhio Announces Strong First Quarter 2023 Results

EXHIBIT 99.1 ParkOhio Announces Strong First Quarter 2023 Results •Net sales of $423.5 million, up 18% from $357.7 million in Q1 2022 •GAAP EPS from continuing operations of $0.61 per diluted share, up 103% vs. Q1 2022; Adjusted EPS from continuing operations of $0.72 per diluted share, up 41% vs. Q1 2022 •Gross margin from continuing operations improved 250 basis points year-over-year to 15.8% •O

May 3, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 3, 2023 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorporat

May 3, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

DEFA14A 1 defa14a-62981pkoh.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant þ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confide

April 13, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6

March 16, 2023 EX-21.1

List of Subsidiaries of Park-Ohio Holdings Corp.

Exhibit 21.1 List of Subsidiaries Company Name Jurisdiction Organized Ajax Tocco de Mexico, S.A. de C.V. Mexico Ajax Tocco International Limited England Ajax Tocco Magnethermic Corporation (1) Ohio Ajax Tocco Magnethermic Corporation Canada Limited Canada Ajax Tocco Magnethermic GmbH Germany Ajax Tocco Magnethermic Holdco S.r.l. Italy Ajax Tocco Magnethermic Japan Co., Ltd. Japan Ajax Tocco Magnet

March 16, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 000-03

March 16, 2023 EX-24.1

Power of Attorney

Exhibit 24.1 PARK-OHIO HOLDINGS CORP. FORM 10-K POWER OF ATTORNEY Each of the undersigned officers and directors of Park-Ohio Holdings Corp., an Ohio corporation, hereby constitutes and appoints Patrick W. Fogarty and Robert D. Vilsack, and each of them, as his true and lawful attorney or attorneys-in-fact, with full power of substitution and revocation, for each of the undersigned and in the name

March 15, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 15, 2023 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpo

March 15, 2023 EX-99.1

ParkOhio Announces 2022 Fourth Quarter and Full Year Results

EXHIBIT 99.1 ParkOhio Announces 2022 Fourth Quarter and Full Year Results Fourth quarter results: •Net sales from continuing operations of $382 million, up 17% YOY •GAAP EPS loss from continuing operations of $0.58 per diluted share ◦Adjusted EPS loss from continuing operations of $0.09 per diluted share ◦Includes tax adjustments which negatively impacted GAAP and adjusted EPS by $0.26 per diluted

February 10, 2023 SC 13G/A

PKOH / Park-Ohio Holdings Corp. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5 )* Park-Ohio Holdings Corp (Name of Issuer) Common Stock (Title of Class of Securities) 700666100 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate bo

November 8, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file numbe

November 7, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 7, 2022 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incor

November 7, 2022 EX-99.1

ParkOhio Announces Third Quarter 2022 Results

EXHIBIT 99.1 ParkOhio Announces Third Quarter 2022 Results ?Q3 2022 Revenues of $436 million, up 22% from Q3 2021 driven by strong demand in each business segment ?Q3 2022 GAAP EPS of $0.22 compared to a loss of $(0.60) in Q3 2021; Adjusted EPS of $0.52, up from a loss of $(0.32) in Q3 2021 ?YTD 2022 Revenues of $1.3 billion, up 20% from YTD 2021 ?YTD GAAP EPS of $0.80 compared to a loss of $(0.58

August 3, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 00

August 3, 2022 EX-4.1

Amendment No. 7 to the Seventh Amended and Restated Credit Agreement, dated June 2, 2022, Park-Ohio Industries, Inc., RB&W Corporation of Canada, the European Borrowers (as defined therein) party thereto, the other Loan Parties (as defined therein), the Lenders (as defined therein), JPMorgan Chase Bank, N.A., as administrative agent, JPMorgan Chase Bank, N.A., Toronto Branch, as Canadian agent, J.P. Morgan Europe Limited, as European agent and J.P. Morgan Securities Inc., as sole lead arranger and bookrunning manager (filed as Exhibit 4.1 to the Form 10-Q of Park-Ohio Holdings Corp. filed on August 3, 2022, SEC File No. 000-03134 and incorporated by reference and made a part hereof).

13541058v5 6/2/2022 2:30 PM 1075.162 AMENDMENT NO. 7 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT This AMENDMENT NO. 7 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT (this "Amendment") is effective as of June 2, 2022, and is entered into by and among PARK-OHIO INDUSTRIES, INC. ("Company"), RB&W CORPORATION OF CANADA ("Canadian Borrower"), the EUROPEAN BORROWERS party to the Credit Agreement,

August 2, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 2, 2022 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpo

August 2, 2022 EX-99.1

ParkOhio Announces Second Quarter 2022 Results and Completes Two Acquisitions

EXHIBIT 99.1 ParkOhio Announces Second Quarter 2022 Results and Completes Two Acquisitions •Q2 2022 Revenues of $429 million, up 22% from Q2 2021 •Q2 2022 GAAP EPS of $0.08 compared to a loss of $(0.44) in Q2 2021; Adjusted EPS of $0.21, up from a loss of $(0.33) in Q2 2021 •Strong results in Supply Technologies and Engineered Products; Assembly Components results impacted by restructuring and inc

June 24, 2022 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 ¨ TRANSITION REPORT PURSUANT TO SECTION 15

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 0-3134 A. Full title of the p

May 23, 2022 EX-1.01

Park-Ohio Holdings Corp. Conflict Minerals Report For the reporting period from January 1, 2021 to December 31, 2021

EX-1.01 2 ex-1021.htm EX-1.01 Exhibit 1.02 Park-Ohio Holdings Corp. Conflict Minerals Report For the reporting period from January 1, 2021 to December 31, 2021 Introduction This Conflict Minerals Report (“Report”) for the Company has been prepared pursuant to Rule 13p-1 and Form SD promulgated under the Securities Exchange Act of 1934, as amended (the “Rules”), for the reporting period from Januar

May 23, 2022 SD

Conflict Minerals Report of Park-Ohio Holdings Corp. for the reporting period from January 1, 2021 to December 31, 2021

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction (Commission (IRS Employer of incorporation or organization) File Number) Identification No.) 6065 Parkland Blvd. Cleveland, Ohio 44124 (Address of principa

May 23, 2022 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 19, 2022 Commission file number: 000-03134 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpora

May 10, 2022 EX-4.2

Amendment No. 3 to the Seventh Amended and Restated Credit Agreement, dated February 19, 2019, Park-Ohio Industries, Inc., RB&W Corporation of Canada, the European Borrowers (as defined therein) party thereto, the other Loan Parties (as defined therein), the Lenders (as defined therein), JPMorgan Chase Bank, N.A., as administrative agent, JPMorgan Chase Bank, N.A., Toronto Branch, as Canadian agent, J.P. Morgan Europe Limited, as European agent and J.P. Morgan Securities Inc., as sole lead arranger and bookrunning manager (filed as Exhibit 4.2 to the Form 10-Q of Park-Ohio Holdings Corp. filed on May 10, 2022, SEC File No. 000-03134 and incorporated herein by reference and made a part hereof).

10320354v3 2/19/2019 12:15 PM 1075.162 AMENDMENT NO. 3 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT This AMENDMENT NO. 3 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT (this "Amendment") is dated as of February 19, 2019, and is entered into by and among PARK-OHIO INDUSTRIES, INC. ("Company"), RB&W CORPORATION OF CANADA ("Canadian Borrower"), the EUROPEAN BORROWERS party to the Credit Agreeme

May 10, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 0

May 10, 2022 EX-4.3

Amendment No. 4 to the Seventh Amended and Restated Credit Agreement, dated November 26, 2019, Park-Ohio Industries, Inc., RB&W Corporation of Canada, the European Borrowers (as defined therein) party thereto, the other Loan Parties (as defined therein), the Lenders (as defined therein), JPMorgan Chase Bank, N.A., as administrative agent, JPMorgan Chase Bank, N.A., Toronto Branch, as Canadian agent, J.P. Morgan Europe Limited, as European agent and J.P. Morgan Securities Inc., as sole lead arranger and bookrunning manager (filed as Exhibit 4.3 to the Form 10-Q of Park-Ohio Holdings Corp. filed on May 10, 2022, SEC File No. 000-03134 and incorporated herein by reference and made a part hereof).

11076957v9 11/26/2019 10:17 AM 1075.162 AMENDMENT NO. 4 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT This AMENDMENT NO. 4 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT (this "Amendment") is dated as of November 26, 2019, and is entered into by and among PARK-OHIO INDUSTRIES, INC. ("Company"), RB&W CORPORATION OF CANADA ("Canadian Borrower"), the EUROPEAN BORROWERS party to the Credit Agreem

May 10, 2022 EX-4.4

Amendment No. 5 to the Seventh Amended and Restated Credit Agreement, dated September 30, 2021, Park-Ohio Industries, Inc., RB&W Corporation of Canada, the European Borrowers (as defined therein) party thereto, the other Loan Parties (as defined therein), the Lenders (as defined therein), JPMorgan Chase Bank, N.A., as administrative agent, JPMorgan Chase Bank, N.A., Toronto Branch, as Canadian agent, J.P. Morgan Europe Limited, as European agent and J.P. Morgan Securities Inc., as sole lead arranger and bookrunning manager (filed as Exhibit 4.4 to the Form 10-Q of Park-Ohio Holdings Corp. filed on May 10, 2022, SEC File No. 000-03134 and incorporated herein by reference and made a part hereof).

12872995v5 9/30/2021 9:16 AM 1075.162 AMENDMENT NO. 5 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT This AMENDMENT NO. 5 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT (this "Amendment") is dated as of September 30, 2021, and is entered into by and among PARK-OHIO INDUSTRIES, INC. ("Company"), RB&W CORPORATION OF CANADA ("Canadian Borrower"), the EUROPEAN BORROWERS party to the Credit Agreeme

May 10, 2022 EX-4.1

Amendment No. 2 to the Seventh Amended and Restated Credit Agreement, dated October 5, 2018, Park-Ohio Industries, Inc., RB&W Corporation of Canada, the European Borrowers (as defined therein) party thereto, the other Loan Parties (as defined therein), the Lenders (as defined therein), JPMorgan Chase Bank, N.A., as administrative agent, JPMorgan Chase Bank, N.A., Toronto Branch, as Canadian agent, J.P. Morgan Europe Limited, as European agent and J.P. Morgan Securities Inc., as sole lead arranger and bookrunning manager (filed as Exhibit 4.1 to the Form 10-Q of Park-Ohio Holdings Corp. filed on August 3, 2022, SEC File No. 000-03134 and incorporated herein by reference and made a part hereof).

9946416v6 10/5/2018 3:10 PM 1075.162 AMENDMENT NO. 2 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT This AMENDMENT NO. 2 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT (this "Amendment") is dated as of October 5, 2018, and is entered into by and among PARK-OHIO INDUSTRIES, INC. ("Company"), RB&W CORPORATION OF CANADA ("Canadian Borrower"), the EUROPEAN BORROWERS party to the Credit Agreement,

May 9, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 9, 2022 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorporat

May 9, 2022 EX-99.1

ParkOhio Reports Improved First Quarter 2022 Results

EXHIBIT 99.1 ParkOhio Reports Improved First Quarter 2022 Results ?Revenues of $418 million, up 13% from Q4 2021 and 16% from Q1 2021 ?GAAP EPS of $0.50, up from a loss of $(1.48) in Q4 2021 and $0.45 in Q1 2021 ?Adjusted EPS of $0.73, up from a loss of $(1.08) in Q4 2021 and $0.53 in Q1 2021 ?Earnings improvement resulting from strong customer demand, improved product pricing and cost reduction e

April 20, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6

March 24, 2022 SC 13D/A

PKOH / Park-Ohio Holdings Corp. / GAMCO INVESTORS, INC. ET AL Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 27) Park-Ohio Holdings Corp. (Name of Issuer) Common Stock Par Value $1.00 Per Share (Title of Class of Securities) 700666100 (CUSIP Number) David Goldman GAMCO Investors, Inc. One Corporate Center Rye, New York 10580-1435 (914) 921-5000 (Name, Address and Telephone Numbe

March 16, 2022 EX-24.1

Power of Attorney

Exhibit 24.1 PARK-OHIO HOLDINGS CORP. FORM 10-K POWER OF ATTORNEY Each of the undersigned officers and directors of Park-Ohio Holdings Corp., an Ohio corporation, hereby constitutes and appoints Patrick W. Fogarty and Robert D. Vilsack, and each of them, as his true and lawful attorney or attorneys-in-fact, with full power of substitution and revocation, for each of the undersigned and in the name

March 16, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 000-03

March 16, 2022 EX-21.1

List of Subsidiaries of Park-Ohio Holdings Corp.

Exhibit 21.1 List of Subsidiaries Company Name Jurisdiction Organized Ajax Tocco de Mexico, S.A. de C.V. Mexico Ajax Tocco International Limited England Ajax Tocco Magnethermic Corporation (1) Ohio Ajax Tocco Magnethermic Corporation Canada Limited Canada Ajax Tocco Magnethermic GmbH Germany Ajax Tocco Magnethermic Holdco S.r.l. Italy Ajax Tocco Magnethermic Japan Co., Ltd. Japan Ajax Tocco Magnet

March 16, 2022 EX-4.3

Amendment No. 6 to the Seventh Amended and Restated Credit Agreement, dated November 30, 2021, Park-Ohio Industries, Inc., RB&W Corporation of Canada, the European Borrowers (as defined therein) party thereto, the other Loan Parties (as defined therein), the Lenders (as defined therein), JPMorgan Chase Bank, N.A., as administrative agent, JPMorgan Chase Bank, N.A., Toronto Branch, as Canadian agent, J.P. Morgan Europe Limited, as European agent and J.P. Morgan Securities Inc., as sole lead arranger and bookrunning manager (filed as Exhibit 4.3 to the Form 10-K of Park-Ohio Holdings Corp. filed on March 16, 2022, SEC File No. 000-03134 and incorporated herein by reference and made a part hereof).

12896932v6 12/16/2021 10:30 AM 1075.162 AMENDMENT NO. 6 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT This AMENDMENT NO. 6 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT (this "Amendment") is effective as of November 30, 2021, and is entered into by and among PARK-OHIO INDUSTRIES, INC. ("Company"), RB&W CORPORATION OF CANADA ("Canadian Borrower"), the EUROPEAN BORROWERS party to the Credit Ag

March 15, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 15, 2022 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpo

March 15, 2022 EX-99.1

ParkOhio Announces Fourth Quarter and Full Year 2021 Results

EXHIBIT 99.1 ParkOhio Announces Fourth Quarter and Full Year 2021 Results ?Q4 2021 Sales up 3% to $370 million; GAAP EPS loss of $1.48; Adjusted EPS loss of $1.08 ?Full-year 2021 Sales up 11% to $1.4 billion; GAAP EPS loss of $2.07; Adjusted EPS loss of $1.20 ?Revenue increase driven by strong end-market demand in Supply Technologies, increased bookings in Engineered Products, and new product laun

February 8, 2022 SC 13G/A

PKOH / Park-Ohio Holdings Corp. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4 )* Park-Ohio Holdings Corp (Name of Issuer) Common Stock (Title of Class of Securities) 700666100 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which thi

November 3, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file numbe

November 2, 2021 EX-99.1

ParkOhio Announces Third Quarter 2021 Results

EXHIBIT 99.1 ParkOhio Announces Third Quarter 2021 Results ?Revenue of $359 million in Q3 2021, up 5% versus Q3 2020 ?Strong end-market demand in Supply Technologies ?Continued Automotive production volatility affecting Assembly Components ?Improved demand in Engineered Products with significant increased bookings of new capital equipment ?GAAP EPS loss of $(0.60); Adjusted EPS loss of $(0.32) ?EP

November 2, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 2, 2021 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incor

August 4, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 00

August 3, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 3, 2021 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpo

August 3, 2021 EX-99.1

ParkOhio Announces Second Quarter 2021 Results

EXHIBIT 99.1 ParkOhio Announces Second Quarter 2021 Results ?Revenue of $350 million in Q2 2021 ?GAAP EPS loss of $(0.44); Adjusted EPS loss of $(0.33) ?Q2 impacted by the global semiconductor chip shortage affecting automotive demand and by increased raw material, labor and supply chain costs ?2021 EBITDA margin and Free Cash Flow outlook revised CLEVELAND, OHIO, August 3, 2021 ? Park-Ohio Holdin

June 24, 2021 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 ¨ TRANSITION REPORT PURSUANT TO SECTION 15

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 or ? TRANSITION REPORT PURSUANT TO SECTION 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 0-3134 A. Full title of the p

June 15, 2021 SC 13D/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 26) Park-Ohio Holdings Corp.

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 26) Park-Ohio Holdings Corp. (Name of Issuer) Common Stock Par Value $1.00 Per Share (Title of Class of Securities) 700666100 (CUSIP Number) David Goldman GAMCO Investors, Inc. One Corporate Center Rye, New York 10580-1435 (914) 921-5000 (Name, Address and Telephone Numbe

June 10, 2021 S-8

As filed with the Securities and Exchange Commission on June 10, 2021

As filed with the Securities and Exchange Commission on June 10, 2021 Registration No.

June 10, 2021 EX-24.1

Power of Attorney

EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of Park-Ohio Holdings Corp., an Ohio corporation (the ?Corporation?), hereby constitutes and appoints Matthew V. Crawford and Robert D. Vilsack, and each of them, as the true and lawful attorney-in-fact or attorneys-in-fact, with full power of substitution and resubstitution, for each

June 2, 2021 EX-10.1

2021 Equity and Incentive Compensation Plan (filed as Exhibit 10.1 to Form 8-K of Park-Ohio Holdings Corp., filed on June 2, 2021, SEC File No. 000-03134 and incorporated by reference and made a part of herein).

Exhibit 10.1 PARK-OHIO HOLDINGS CORP. 2021 EQUITY AND INCENTIVE COMPENSATION PLAN 1.Purpose. The purpose of this Plan is to permit award grants to Directors, officers and other employees of the Company and its Subsidiaries, and certain consultants to the Company and its Subsidiaries, and to provide to such persons incentives and rewards for performance and/or service. 2.Definitions. As used in thi

June 2, 2021 SC 13D/A

PKOH / Park-Ohio Holdings Corp. / CRAWFORD EDWARD F - SC 13D/A Activist Investment

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(a) (Amendment No. 6) Park-Ohio Holdings Corp. (Name of Issuer) Common Stock, $1.00 par value (Title and Class of Securities) 700666100 (CUSIP Number) Edward F. Crawford c/o Park-Ohio Holdin

June 2, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 27, 2021 Commission file number: 000-03134 PARK-OHIO HOLDINGS CORP. (Exact Name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpora

May 28, 2021 EX-1.01

Conflict Minerals Report of Park-Ohio Holdings Corp. for the reporting period from January 1, 2020 to December 31, 2020

Exhibit 1.02 Park-Ohio Holdings Corp. Conflict Minerals Report For the reporting period from January 1, 2020 to December 31, 2020 Introduction This Conflict Minerals Report (?Report?) for the Company has been prepared pursuant to Rule 13p-1 and Form SD promulgated under the Securities Exchange Act of 1934, as amended (the ?Rules?), for the reporting period from January 1, 2020 through December 31,

May 28, 2021 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction (Comm

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction (Commission (IRS Employer of incorporation or organization) File Number) Identification No.) 6065 Parkland Blvd. Cleveland, Ohio 44124 (Address of principa

May 27, 2021 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 27, 2021 Commission file number: 000-03134 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpora

May 5, 2021 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 0

May 4, 2021 EX-99.1

ParkOhio Announces First Quarter 2021 Results

EXHIBIT 99.1 ParkOhio Announces First Quarter 2021 Results ?Revenue of $360 million ?GAAP EPS of $0.45; Adjusted EPS of $0.53 ?Operating Cash Flows of $10 million ?Increased Liquidity to $264 million at March 31, 2021 ?Completed the Acquisition of NYK Component Solutions CLEVELAND, OHIO, May 4, 2021 ? Park-Ohio Holdings Corp. (NASDAQ: PKOH) today announced its results for the first quarter of 2021

May 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 4, 2021 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorporat

April 27, 2021 DEF 14A

- DEF 14A

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

March 18, 2021 SC 13D/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 25) Park-Ohio Holdings Corp.

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 25) Park-Ohio Holdings Corp. (Name of Issuer) Common Stock Par Value $1.00 Per Share (Title of Class of Securities) 700666100 (CUSIP Number) David Goldman GAMCO Investors, Inc. One Corporate Center Rye, New York 10580-1435 (914) 921-5000 (Name, Address and Telephone Numbe

March 12, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 11, 2021 Commission file number: 000-03134 PARK-OHIO HOLDINGS CORP. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpo

March 5, 2021 EX-21.1

List of Subsidiaries of Park-Ohio Holdings Corp.

Exhibit 21.1 List of Subsidiaries Company Name Jurisdiction Organized Ajax Tocco de Mexico, S.A. de C.V. Mexico Ajax Tocco International Limited England Ajax Tocco Magnethermic Corporation (1) Ohio Ajax Tocco Magnethermic Corporation Canada Limited Canada Ajax Tocco Magnethermic GmbH Germany Ajax Tocco Magnethermic Holdco S.r.l. Italy Ajax Tocco Magnethermic Japan Co., Ltd. Japan Ajax Tocco Magnet

March 5, 2021 10-K

Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 000-03

March 5, 2021 EX-24.1

Power of Attorney

Exhibit 24.1 PARK-OHIO HOLDINGS CORP. FORM 10-K POWER OF ATTORNEY Each of the undersigned officers and directors of Park-Ohio Holdings Corp., an Ohio corporation, hereby constitutes and appoints Patrick W. Fogarty and Robert D. Vilsack, and each of them, as his true and lawful attorney or attorneys-in-fact, with full power of substitution and revocation, for each of the undersigned and in the name

March 2, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 2, 2021 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incorpor

March 2, 2021 EX-99.1

ParkOhio Announces Fourth Quarter and Full Year 2020 Results

EXHIBIT 99.1 ParkOhio Announces Fourth Quarter and Full Year 2020 Results Fourth Quarter 2020: ?Q4 2020 Sales of $360 million; Sequential growth of 6% ?Q4 GAAP EPS of $0.46; Adjusted EPS of $0.53 ?Free cash flow of $25 million ?Net debt reduction of $24 million ?Liquidity increased to $252 million Full Year 2020: ?Sales of $1.3 billion ?GAAP EPS of $(0.37); Adjusted EPS of $0.01 ?Free cash flow of

February 16, 2021 SC 13G/A

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3 )* Park-Ohio Holdings Corp (Name of Issuer) Common Stock (Title of Class of Securities) 700666100 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which thi

February 9, 2021 CORRESP

-

Park-Ohio Holdings Corp. 6065 Parkland Boulevard Cleveland, Ohio 44124 February 9, 2021 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, NE Washington, D.C. 20549 Attn: Asia Timmons-Pierce Re: Park-Ohio Holdings Corp. Registration Statement on Form S-3 (Registration No. 333-252687) Ladies and Gentlemen: On behalf of Park-Ohio Holdings Corp. (

February 3, 2021 EX-4.3

Form of Debt Securities Indenture

EX-4.3 Exhibit 4.3 PARK-OHIO HOLDINGS CORP. INDENTURE Dated as of [ ] [ ], as Trustee CROSS-REFERENCE TABLE* Trust Indenture Act Section Indenture Section 310(a)(1) 7.10 (a)(2) 7.10 (a)(3) N.A. (a)(4) N.A. (a)(5) 7.10 (b) 7.10 (c) N.A. 311(a) 7.11 (b) 7.11 (c) N.A. 312(a) 2.06 (b) 11.03 (c) 11.03 313(a) 7.06 (b)(2) 7.06; 7.07 (c) 7.06; 11.02 (d) 7.06 314(a) 4.03; 4.04; 11.05 (b) N.A. (c)(l) 11.04

February 3, 2021 S-3

- FORM S-3

Form S-3 Table of Contents As filed with the Securities and Exchange Commission on February 3, 2021 Registration No.

February 3, 2021 EX-24.1

Power of Attorney

EX-24.1 Exhibit 24.1 REGISTRATION STATEMENT ON FORM S-3 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of PARK-OHIO HOLDINGS CORP., an Ohio corporation (the “Corporation”), hereby constitutes and appoints Matthew V. Crawford, Patrick W. Fogarty and Robert D. Vilsack, and each of them, as the true and lawful attorney-in-fact or attorneys-in-fac

November 4, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file numbe

November 3, 2020 EX-99.1

ParkOhio Announces Third Quarter 2020 Results; Declares Quarterly Dividend

EXHIBIT 99.1 ParkOhio Announces Third Quarter 2020 Results; Declares Quarterly Dividend • Sequential Revenue Growth of 49% • GAAP EPS of $0.44; Adjusted EPS of $0.52 • Operating Cash Flow of $23 million; Free Cash Flow of $18 million • Liquidity increased to $243 million • Declares Quarterly Cash Dividend of $0.125 CLEVELAND, OHIO, November 3, 2020 — Park-Ohio Holdings Corp. (NASDAQ: PKOH) today a

November 3, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 3, 2020 Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of incor

August 5, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 00

August 4, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 4, 2020 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File

August 4, 2020 EX-99.1

ParkOhio Announces Second Quarter 2020 Results

EXHIBIT 99.1 ParkOhio Announces Second Quarter 2020 Results CLEVELAND, OHIO, August 4, 2020 — Park-Ohio Holdings Corp. (NASDAQ: PKOH) today announced its results for the second quarter of 2020. SECOND QUARTER CONSOLIDATED RESULTS Net sales were $228.3 million in the second quarter of 2020 compared to net sales of $415.3 million in the second quarter of 2019. Net loss attributable to ParkOhio commo

June 24, 2020 11-K

- 11-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 or ¨ TRANSITION REPORT PURSUANT TO SECTION 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 0-3134 A. Full title of the p

June 1, 2020 SD

- SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction (Commission (IRS Employer of incorporation or organization) File Number) Identification No.) 6065 Parkland Blvd. Cleveland, Ohio 44124 (Address of principa

June 1, 2020 EX-1.01

Conflict Minerals Report of Park-Ohio Holdings Corp. for the reporting period from January 1, 2019 to December 31, 2019

Exhibit 1.02 Park-Ohio Holdings Corp. Conflict Minerals Report For the reporting period from January 1, 2019 to December 31, 2019 Introduction This Conflict Minerals Report (“Report”) for the Company has been prepared pursuant to Rule 13p-1 and Form SD promulgated under the Securities Exchange Act of 1934, as amended (the “Rules”), for the reporting period from January 1, 2019 through December 31,

May 28, 2020 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 28, 2020 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File N

May 7, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 0

May 6, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 6, 2020 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File Nu

May 6, 2020 EX-99.1

ParkOhio Announces First Quarter 2020 Results

EXHIBIT 99.1 ParkOhio Announces First Quarter 2020 Results • Q1 2020 Revenues of $366 million • Q1 2020 GAAP EPS of $0.10; Q1 2020 Adjusted EPS of $0.13 • Liquidity position as of March 31, 2020 totaled $237 million • Quarterly Dividend Suspended CLEVELAND, OHIO, May 6, 2020 — Park-Ohio Holdings Corp. (NASDAQ: PKOH) today announced its results for the first quarter of 2020. FIRST QUARTER CONSOLIDA

April 29, 2020 DEF 14A

- DEF 14A

DEF 14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 29, 2020 DEFA14A

- DEFA14A

DEFA14A 1 d874931ddefa14a.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidentia

March 12, 2020 EX-21.1

List of Subsidiaries of Park-Ohio Holdings Corp.

Exhibit 21.1 List of Subsidiaries Company Name Jurisdiction Organized Ajax Tocco de Mexico, S.A. de C.V. Mexico Ajax Tocco International Limited England Ajax Tocco Magnethermic Corporation (5) Ohio Ajax Tocco Magnethermic Corporation Canada Limited Canada Ajax Tocco Magnethermic GmbH Germany Ajax Tocco Magnethermic Holdco S.r.l. Italy Ajax Tocco Magnethermic Japan Co., Ltd. Japan Ajax Tocco Magnet

March 12, 2020 EX-24.1

Power of Attorney

EX-24.1 5 pkoh20191231-ex241.htm EX-24.1 Exhibit 24.1 PARK-OHIO HOLDINGS CORP. FORM 10-K POWER OF ATTORNEY Each of the undersigned officers and directors of Park-Ohio Holdings Corp., an Ohio corporation, hereby constitutes and appoints Patrick W. Fogarty and Robert D. Vilsack, and each of them, as his true and lawful attorney or attorneys-in-fact, with full power of substitution and revocation, fo

March 12, 2020 10-K

PKOH / Park-Ohio Holdings Corp. 10-K - Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 000-03

March 12, 2020 EX-4.3

Exhibit 4.3

Exhibit 4.3 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following description is a general summary of the terms of the common shares, par value of $1.00 per share, of Park-Ohio Holdings Corp., an Ohio corporation (the "Company"). The description below does not include all of the terms of the common shares and should be read together with the Com

March 11, 2020 EX-99.1

ParkOhio Announces 2019 Results and Share Repurchase Program

EX-99.1 2 pkoh20191231-ex991earnings.htm EX-99.1 EXHIBIT 99.1 ParkOhio Announces 2019 Results and Share Repurchase Program Fourth Quarter 2019: • Q4 2019 Sales of $380 million • Q4 GAAP EPS of $0.61; Adjusted EPS of $0.65 • Operating cash flows of $30.2 million Full Year 2019: • Sales of $1.618 billion in 2019 • GAAP EPS of $3.12; Adjusted EPS of $3.74 • Operating cash flows of $63.7 million CLEVE

March 11, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 11, 2020 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File

February 12, 2020 SC 13G/A

PKOH / Park-Ohio Holdings Corp. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* PARK-OHIO HOLDINGS CORP (Name of Issuer) Common Stock (Title of Class of Securities) 700666100 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this

November 5, 2019 10-Q

PKOH / Park-Ohio Holdings Corp. 10-Q - Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file numbe

November 4, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 4, 2019 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission Fi

November 4, 2019 EX-99.1

ParkOhio Announces Third Quarter 2019 Results

EXHIBIT 99.1 ParkOhio Announces Third Quarter 2019 Results • Q3 2019 Revenues of $403 million; YTD 2019 Revenues of $1.2 billion • Q3 GAAP EPS was $0.99; Q3 Adjusted EPS was $1.01 • YTD GAAP EPS was $2.51; YTD Adjusted EPS was $3.09 • 2019 GAAP EPS guidance range updated to $3.42 to $3.62; Adjusted EPS guidance updated to $4.00 to $4.20; resulting primarily from the impact of the UAW labor strike

August 8, 2019 10-Q

PKOH / Park-Ohio Holdings Corp. 10-Q - Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 00

August 5, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 5, 2019 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File

August 5, 2019 EX-99.1

ParkOhio Announces Second Quarter 2019 Results

EXHIBIT 99.1 ParkOhio Announces Second Quarter 2019 Results • Q2 2019 Revenues of $415 million; YTD 2019 Revenues of $835 million • Q2 GAAP EPS was $0.61; Q2 Adjusted EPS was $1.07 • YTD GAAP EPS was $1.51; YTD Adjusted EPS was $2.08 • 2019 GAAP EPS guidance range updated to $3.70 to $4.05; Adjusted EPS guidance of $4.30 to $4.60 maintained CLEVELAND, OHIO, August 5, 2019 — Park-Ohio Holdings Corp

June 25, 2019 11-K

PKOH / Park-Ohio Holdings Corp. 11-K - - 11-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 or ¨ TRANSITION REPORT PURSUANT TO SECTION 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 0-3134 A. Full title of the p

June 18, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 17, 2019 Park-Ohio Holdings Corp.

May 30, 2019 SD

PKOH / Park-Ohio Holdings Corp. SD - - SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction (Commission (IRS Employer of incorporation or organization) File Number) Identification No.) 6065 Parkland Blvd. Cleveland, Ohio 44124 (Address of principa

May 30, 2019 EX-1.01

Conflict Minerals Report of Park-Ohio Holdings Corp. for the reporting period from January 1, 2018 to December 31, 2018

Exhibit 1.02 Park-Ohio Holdings Corp. Conflict Minerals Report For the reporting period from January 1, 2018 to December 31, 2018 Introduction This Conflict Minerals Report (“Report”) for the Company has been prepared pursuant to Rule 13p-1 and Form SD promulgated under the Securities Exchange Act of 1934, as amended (the “Rules”), for the reporting period from January 1, 2018 through December 31,

May 9, 2019 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 9, 2019 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File Nu

May 7, 2019 10-Q

PKOH / Park-Ohio Holdings Corp. 10-Q Quarterly Report 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 0

May 6, 2019 EX-99.1

ParkOhio Announces First Quarter 2019 Results

EXHIBIT 99.1 ParkOhio Announces First Quarter 2019 Results • Q1 Revenues increased to $420.1 million, up 4% year-over-year • GAAP EPS was $0.90, up 15% year-over-year from $0.78 in Q1 2018 • Adjusted EPS was $1.01, up 9% from $0.93 in Q1 2018 • Full year 2019 GAAP EPS guidance of $4.20-$4.50 and Adjusted EPS guidance of $4.30-$4.60 re-affirmed CLEVELAND, OHIO, May 6, 2019 — Park-Ohio Holdings Corp

May 6, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 6, 2019 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File Nu

April 9, 2019 DEF 14A

PKOH / Park-Ohio Holdings Corp. DEF 14A

DEF 14A 1 d641712ddef14a.htm DEF 14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential

March 5, 2019 EX-24.1

Power of Attorney

Exhibit 24.1 PARK-OHIO HOLDINGS CORP. FORM 10-K POWER OF ATTORNEY Each of the undersigned officers and directors of Park-Ohio Holdings Corp., an Ohio corporation, hereby constitutes and appoints Patrick W. Fogarty and Robert D. Vilsack, and each of them, as his true and lawful attorney or attorneys-in-fact, with full power of substitution and revocation, for each of the undersigned and in the name

March 5, 2019 10-K

PKOH / Park-Ohio Holdings Corp. 10-K (Annual Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 000-03

March 5, 2019 EX-21.1

List of Subsidiaries of Park-Ohio Holdings Corp.

Exhibit 21.1 List of Subsidiaries Company Name Jurisdiction Organized Ajax Tocco de Mexico, S.A. de C.V. Mexico Ajax Tocco International Limited England Ajax Tocco Magnethermic Corporation (5) Ohio Ajax Tocco Magnethermic Corporation Canada Limited Canada Ajax Tocco Magnethermic GmbH Germany Ajax Tocco Magnethermic Holdco S.r.l. Italy Ajax Tocco Magnethermic Japan Co., Ltd. Japan Ajax Tocco Magnet

March 4, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 4, 2019 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File

March 4, 2019 EX-99.1

ParkOhio Announces Record 2018 Sales and EPS and Provides 2019 EPS Guidance

EXHIBIT 99.1 ParkOhio Announces Record 2018 Sales and EPS and Provides 2019 EPS Guidance Full Year: • Record Sales of $1.7 billion in 2018, up 17% year-over-year • Record GAAP EPS of $4.28 in 2018, up 86% compared to $2.30 in 2017 • Record Adjusted EPS of $4.28 in 2018, up 33% compared to $3.23 in 2017 Fourth Quarter: • Q4 2018 Sales were $406 million, up 11% year-over-year • GAAP EPS of $1.19 in

February 8, 2019 SC 13G/A

PKOH / Park-Ohio Holdings Corp. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* PARK-OHIO HOLDINGS CORP (Name of Issuer) Common Stock (Title of Class of Securities) 700666100 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this

November 6, 2018 10-Q

PKOH / Park-Ohio Holdings Corp. 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2018 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file numbe

November 5, 2018 EX-99.1

ParkOhio Announces Strong Third Quarter 2018 Results and Completes Acquisition of Hydrapower Dynamics Limited

EXHIBIT 99.1 ParkOhio Announces Strong Third Quarter 2018 Results and Completes Acquisition of Hydrapower Dynamics Limited • Revenues increased to $414 million, up 18% year-over-year • GAAP EPS was $1.14, up 42% from $0.80 in Q3 2017 • Adjusted EPS was $1.07, up 30% from $0.82 in Q3 2017 • YTD Revenues up 20% and Segment Operating Income up 22% year-over-year CLEVELAND, OHIO, November 5, 2018 — Pa

November 5, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 5, 2018 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission Fi

September 19, 2018 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): September 13, 2018 Park-Ohio Holdings Corp.

August 9, 2018 10-Q

PKOH / Park-Ohio Holdings Corp. 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2018 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 00

August 9, 2018 EX-4.1

Amendment No. 1 to the Seventh Amended and Restated Credit Agreement, dated June 25, 2018, Park-Ohio Industries, Inc., RB&W Corporation of Canada, the European Borrowers (as defined therein) party thereto, the other Loan Parties (as defined therein), the Lenders (as defined therein), JPMorgan Chase Bank, N.A., as administrative agent, JPMorgan Chase Bank, N.A., Toronto Branch, as Canadian agent, J.P. Morgan Europe Limited, as European agent and J.P. Morgan Securities Inc., as sole lead arranger and bookrunning manager (filed as Exhibit 4.1 to the Form 10-Q of Park-Ohio Holdings Corp. filed on August 9, 2018, SEC File No. 000-03134 and incorporated herein by reference and made a part hereof).

AMENDMENT NO. 1 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT This AMENDMENT NO. 1 TO SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT (this "Amendment") is dated as of June 25, 2018, and is entered into by and among PARK-OHIO INDUSTRIES, INC. ("Company"), RB&W CORPORATION OF CANADA ("Canadian Borrower"), the EUROPEAN BORROWERS party to the Credit Agreement, the other Loan Parties party to the Cre

August 8, 2018 EX-99.1

ParkOhio Announces Record Second Quarter 2018 Results

EXHIBIT 99.1 ParkOhio Announces Record Second Quarter 2018 Results • Q2 2018 Revenues increased to a record $432 million, up 23% year-over-year • Q2 2018 GAAP EPS was $1.18 • Q2 2018 Adjusted EPS was $1.08, up 24% from $0.87 in Q2 2017 • Adjusted EPS guidance increased to $3.80 - $4.00; GAAP EPS guidance increased to $3.75 - $3.95 CLEVELAND, OHIO, August 8, 2018 — Park-Ohio Holdings Corp. (NASDAQ:

August 8, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 8, 2018 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File

June 27, 2018 EX-24.1

Power of Attorney.

EX-24.1 5 pkoh20180627-ex241.htm EX-24.1 EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of Park-Ohio Holdings Corp., an Ohio corporation (the “Corporation”), hereby constitutes and appoints Edward F. Crawford, Matthew V. Crawford and Robert D. Vilsack, and each of them, as the true and lawful attorney-in-fact or attorneys-in-fact,

June 27, 2018 EX-4.4

2018 Equity and Incentive Compensation Plan (filed as Exhibit 4.4 to Form S-8 of Park-Ohio Holdings Corp., filed on June 27, 2018, SEC File No. 000-03134 and incorporated by reference and made a part hereof)

EXHIBIT 4.4 APPENDIX A PARK-OHIO HOLDINGS CORP. 2018 EQUITY AND INCENTIVE COMPENSATION PLAN 1. Purpose. The purpose of this Plan is to attract and retain Directors, officers and other key employees of the Company and its Subsidiaries and to provide to such persons incentives and rewards for performance. 2. Definitions. As used in this Plan: (a) “Affiliate” means any corporation, partnership, joint

June 27, 2018 S-8

PKOH / Park-Ohio Holdings Corp. S-8

As filed with the Securities and Exchange Commission on June 27, 2018. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 34-1867219 (State or other jurisdiction of (I.R.S. Employer incorporation or organizati

June 22, 2018 11-K

PKOH / Park-Ohio Holdings Corp. 11-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2017 or ¨ TRANSITION REPORT PURSUANT TO SECTION 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 0-3134 A. Full title of the p

May 24, 2018 SD

PKOH / Park-Ohio Holdings Corp. SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction (Commission (IRS Employer of incorporation or organization) File Number) Identification No.) 6065 Parkland Blvd. Cleveland, Ohio 44124 (Address of principa

May 24, 2018 EX-1.01

Conflict Minerals Report of Park-Ohio Holdings Corp. for the reporting period from January 1, 2017 to December 31, 2017

Exhibit 1.02 Park-Ohio Holdings Corp. Conflict Minerals Report For the Year Ended December 31, 2017 Introduction This Conflict Minerals Report (“Report”) for the Company has been prepared pursuant to Rule 13p-1 and Form SD promulgated under the Securities Exchange Act of 1934, as amended (the “Rules”), for the reporting period from January 1, 2017 through December 31, 2017 (the “Reporting Period”)

May 11, 2018 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 10, 2018 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File N

May 11, 2018 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 10, 2018 Park-Ohio Holdings Corp.

May 9, 2018 10-Q

PKOH / Park-Ohio Holdings Corp. 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2018 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 0

May 8, 2018 EX-99.1

ParkOhio Announces Strong First Quarter 2018 Results

EXHIBIT 99.1 ParkOhio Announces Strong First Quarter 2018 Results • Q1 2018 Revenues increased to a record $406 million, up 18% year-over-year • GAAP EPS was $0.78 • Adjusted EPS was $0.93 • Adjusted EPS was up 37% from $0.68 in Q1 2017 CLEVELAND, OHIO, May 8, 2018 — Park-Ohio Holdings Corp. (NASDAQ: PKOH) today announced its results for the first quarter of 2018. Net sales were a record $405.7 mi

May 8, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 8, 2018 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File Nu

April 6, 2018 DEF 14A

PKOH / Park-Ohio Holdings Corp. DEF 14A

DEF 14A 1 d508910ddef14a.htm DEF 14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential

March 8, 2018 EX-24.1

Power of Attorney

Exhibit 24.1 PARK-OHIO HOLDINGS CORP. FORM 10-K POWER OF ATTORNEY Each of the undersigned officers and directors of Park-Ohio Holdings Corp., an Ohio corporation, hereby constitutes and appoints Patrick W. Fogarty and Robert D. Vilsack, and each of them, as his true and lawful attorney or attorneys-in-fact, with full power of substitution and revocation, for each of the undersigned and in the name

March 8, 2018 10-K

PKOH / Park-Ohio Holdings Corp. 10-K (Annual Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2017 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 000-03

March 8, 2018 EX-21.1

List of Subsidiaries of Park-Ohio Holdings Corp.

Exhibit 21.1 List of Subsidiaries Company Name Jurisdiction Organized Ajax Tocco de Mexico, S.A. de C.V. Mexico Ajax Tocco International Limited England Ajax Tocco Magnethermic (Shanghai) Co., Ltd. China Ajax Tocco Magnethermic Corporation (5) Ohio Ajax Tocco Magnethermic Corporation Canada Limited Canada Ajax Tocco Magnethermic GmbH Germany Ajax Tocco Magnethermic Holdco S.r.l. Italy Ajax Tocco M

March 5, 2018 EX-99.1

FOURTH QUARTER 2017 RESULTS

EXHIBIT 99.1 • ParkOhio Achieves Revenue and Earnings Expectations in 2017 • Anticipates Continued Sales and Earnings Growth in 2018 Full Year: • 2017 Revenues increased $136 million to $1.4 billion, up 11% year-over-year • Adjusted EPS was $3.23, up 7% compared to the prior year’s $3.01 • GAAP EPS was $2.30, unfavorably impacted by the new U.S. Tax Act, compared to the prior year's $2.58 • 2018 E

March 5, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 5, 2018 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commission File

February 9, 2018 SC 13G

PKOH / Park-Ohio Holdings Corp. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* PARK-OHIO HOLDINGS CORP (Name of Issuer) Common Stock (Title of Class of Securities) 700666100 (CUSIP Number) December 31, 2017 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this

November 7, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 6, 2017 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Comm

November 7, 2017 EX-99.1

ParkOhio Announces Third Quarter Results

Exhibit EXHIBIT 99.1 ParkOhio Announces Third Quarter Results ? Q3 2017 Revenues Increased to $352 million, up 13% Year-Over-Year ? YTD 2017 Revenues up 8% Year-Over-Year ? 2017 Full-Year Guidance Maintained at $3.15 to $3.35 per Diluted Share, As Adjusted CLEVELAND, OHIO, November 6, 2017 ? Park-Ohio Holdings Corp. (NASDAQ: PKOH) today announced its results for the third quarter of 2017 . THIRD Q

November 7, 2017 10-Q

PKOH / Park-Ohio Holdings Corp. 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2017 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file numbe

August 8, 2017 10-Q

PKOH / Park-Ohio Holdings Corp. 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2017 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 00

August 7, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 7, 2017 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commis

August 7, 2017 EX-99.1

ParkOhio Announces Strong Second Quarter Results

Exhibit EXHIBIT 99.1 ParkOhio Announces Strong Second Quarter Results ? Revenues Increased to $351 Million from $329 Million in Q2 2016, Up 6.5% ? YTD Revenues Increased to $695 Million from $657 Million in YTD 2016, Up 5.7% ? GAAP Diluted EPS was $0.24 and Adjusted Diluted EPS was $0.87 ? YTD GAAP Diluted EPS was $1.03 and Adjusted Diluted EPS was $1.54 ? Adjusted Diluted EPS Increased 14% from Q

June 29, 2017 11-K

Park-Ohio Holdings 11-K

Document Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

May 19, 2017 SD

Park-Ohio Holdings SD

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction (Commission (IRS Employer of incorporation or organization) File Number) Identification No.) 6065 Parkland Blvd. Cleveland, Ohio 44124 (Address of

May 19, 2017 EX-1.01

Park-Ohio Holdings Corp. Conflict Minerals Report For the Year Ended December 31, 2016

Exhibit Exhibit 1.02 Park-Ohio Holdings Corp. Conflict Minerals Report For the Year Ended December 31, 2016 Introduction This Conflict Minerals Report (?Report?) for the Company has been prepared pursuant to Rule 13p-1 and Form SD promulgated under the Securities Exchange Act of 1934, as amended (the ?Rules?), for the reporting period from January 1, 2016 through December 31, 2016 (the ?Reporting

May 12, 2017 8-K

Park-Ohio Holdings 8-K (Current Report/Significant Event)

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 11, 2017 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commissi

May 9, 2017 10-Q

Park-Ohio Holdings 10-Q (Quarterly Report)

Document Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 8, 2017 EX-99.1

ParkOhio Announces Significantly Higher First Quarter Results

Exhibit EXHIBIT 99.1 ParkOhio Announces Significantly Higher First Quarter Results ? Revenues Increased Year-Over-Year ? First Quarter 2017 EPS was $0.79 Per Diluted Share, Up From $0.22 in Q1 2016 ? Adjusted EPS was $0.68 Per Diluted Share, Up 48% From Q1 2016 ? New Financing of $700 Million Adds Significant Liquidity and Enables Future Growth CLEVELAND, OHIO, May 8, 2017 ? Park-Ohio Holdings Cor

May 8, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 8, 2017 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commissio

April 17, 2017 EX-4.3

Seventh Amended and Restated Credit Agreement, dated April 17, 2017, among Park-Ohio Industries, Inc., RB&W Corporation of Canada, the European Borrowers (as defined therein) party thereto, the other Loan Parties (as defined therein), the Lenders (as defined therein), JPMorgan Chase Bank, N.A., as administrative agent, JPMorgan Chase Bank, N.A., Toronto Branch, as Canadian agent, J.P. Morgan Europe Limited, as European agent and J.P. Morgan Securities Inc., as sole lead arranger and bookrunning manager (filed as Exhibit 4.3 to the Form 8-K of Park-Ohio Holdings Corp. filed on April 17, 2017, SEC File No. 000-03134 and incorporated herein by reference and made a part hereof).

Exhibit 4.3 SEVENTH AMENDED AND RESTATED CREDIT AGREEMENT dated as of April 17, 2017 among PARK-OHIO INDUSTRIES, INC., RB&W CORPORATION OF CANADA, The European Borrowers Party Hereto, The Other Loan Parties Party Hereto, The Lenders Party Hereto and JPMORGAN CHASE BANK, N.A., as Administrative Agent, JPMORGAN CHASE BANK, N.A., TORONTO BRANCH, as Canadian Agent, J.P. MORGAN EUROPE LIMITED, as Europ

April 17, 2017 EX-4.1

Indenture, dated April 17, 2017, among Park-Ohio Industries, Inc., the Guarantors (as defined therein) and Wells Fargo Bank, National Association, as trustee (including Form of Note) (filed as Exhibit 4.1 to the Form 8-K of Park-Ohio Holdings Corp. filed on April 17, 2017, SEC File No. 000-03134 and incorporated herein by reference and made a part hereof)

Exhibit 4.1 EXECUTION VERSION PARK-OHIO INDUSTRIES, INC. AND EACH OF THE GUARANTORS PARTY HERETO 6.625% SENIOR NOTES DUE 2027 INDENTURE Dated as of April 17, 2017 Wells Fargo Bank, National Association Trustee CROSS-REFERENCE TABLE* Trust Indenture Act Section Indenture Section 310(a)(1) 7.10 (a)(2) 7.10 (a)(3) N.A. (a)(4) N.A. (a)(5) 7.10 (b) 7.03; 7.10 (c) N.A. 311(a) 7.11 (b) 7.11 (c) N.A. 312(

April 17, 2017 EX-10.1

Registration Rights Agreement, dated April 17, 2017, among Park-Ohio Industries, Inc., the Guarantors (as defined therein) and the initial purchasers that are party thereto (filed as Exhibit 10.1 to the Form 8-K of Park-Ohio Holdings Corp. filed on April 17, 2017, SEC File No. 000-03134 and incorporated herein by reference and made a part hereof).

Exhibit 10.1 EXECUTION VERSION REGISTRATION RIGHTS AGREEMENT Dated as of April 17, 2017 by and among PARK-OHIO INDUSTRIES, INC. THE GUARANTORS LISTED ON SCHEDULE I HERETO and BARCLAYS CAPITAL INC. This Registration Rights Agreement (this ?Agreement?) is made and entered into as of April 17, 2017, by and among Park-Ohio Industries, Inc., an Ohio corporation (the ?Company?), the guarantors listed on

April 17, 2017 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 17, 2017 Park-Ohio Holdings Corp.

April 17, 2017 EX-4.2

SIXTH SUPPLEMENTAL INDENTURE

Exhibit 4.2 SIXTH SUPPLEMENTAL INDENTURE SIXTH SUPPLEMENTAL INDENTURE (this ?Supplemental Indenture?), dated as of April 17, 2017, by and among Park-Ohio Industries, Inc., an Ohio corporation (the ?Company?), the Guarantors (as defined in the Indenture referred to below) and Wells Fargo Bank, National Association, as trustee under the Indenture referred to below (the ?Trustee?). Capitalized terms

April 5, 2017 EX-99.1

Park-Ohio Prices $350 Million Debt Offering

Exhibit Exhibit 99.1 Park-Ohio Prices $350 Million Debt Offering Cleveland, Ohio, April 5, 2017. Park-Ohio Industries, Inc. (the ?Company?), a subsidiary of Park-Ohio Holdings Corp. (NASDAQ: PKOH), today announced that it has priced its offering of $350.0 million aggregate principal amount of 6.625% Senior Notes due 2027 (the ?Notes?) in an offering exempt from the registration requirements of the

April 5, 2017 8-K

Financial Statements and Exhibits, Other Events

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 5, 2017 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commiss

April 4, 2017 DEF 14A

Park-Ohio Holdings DEF 14A

DEF 14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

March 31, 2017 8-K

Financial Statements and Exhibits, Other Events

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 31, 2017 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commis

March 31, 2017 EX-99.1

Park-Ohio Announces $350 Million Debt Offering

Exhibit Exhibit 99.1 Park-Ohio Announces $350 Million Debt Offering Cleveland, Ohio, March 31, 2017. Park-Ohio Industries, Inc. (the ?Company?), a subsidiary of Park-Ohio Holdings Corp. (NASDAQ: PKOH), today announced that it intends to offer $350.0 million aggregate principal amount of senior notes due 2027 (the ?Notes?), subject to market and customary conditions, in an offering exempt from the

March 9, 2017 10-K

Park-Ohio Holdings 10-K (Annual Report)

Document Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 9, 2017 EX-24.1

PARK-OHIO HOLDINGS CORP. FORM 10-K POWER OF ATTORNEY

Exhibit 24.1 PARK-OHIO HOLDINGS CORP. FORM 10-K POWER OF ATTORNEY Each of the undersigned officers and directors of Park-Ohio Holdings Corp., an Ohio corporation, hereby constitutes and appoints Patrick W. Fogarty and Robert D. Vilsack, and each of them, as his true and lawful attorney or attorneys-in-fact, with full power of substitution and revocation, for each of the undersigned and in the name

March 9, 2017 EX-21.1

List of Subsidiaries

Exhibit 21.1 List of Subsidiaries Company Name Jurisdiction Organized Ajax Tocco de Mexico, S.A. de C.V. Mexico Ajax Tocco International Limited England Ajax Tocco Magnethermic (Shanghai) Co., Ltd. China Ajax Tocco Magnethermic Corporation (5) Ohio Ajax Tocco Magnethermic Corporation Canada Limited Canada Ajax Tocco Magnethermic GmbH Germany Ajax Tocco Magnethermic Holdco S.r.l. Italy Ajax Tocco M

March 7, 2017 EX-99.1

ParkOhio Announces Fourth Quarter and Full Year 2016 Results •Full year EPS of $2.58 per diluted share, or $3.01 per diluted share on an adjusted basis •Record full-year operating cash flows of $73 million •Completed acquisition of GH Electrotermia S

Exhibit EXHIBIT 99.1 ParkOhio Announces Fourth Quarter and Full Year 2016 Results ? Full year EPS of $2.58 per diluted share, or $3.01 per diluted share on an adjusted basis ? Record full-year operating cash flows of $73 million ? Completed acquisition of GH Electrotermia S.A. ? 2017 EPS guidance range of $3.15 to $3.35 CLEVELAND, OHIO, March 7, 2017 ? ParkOhio (NASDAQ: PKOH) today announced resul

March 7, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 7, 2017 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter) Ohio 000-03134 34-1867219 (State or other jurisdiction of incorporation) (Commiss

February 13, 2017 SC 13G/A

PKOH / Park-Ohio Holdings Corp. / TimesSquare Capital Management, LLC - SCHEDULE 13G AMENDMENT NO. 2 Passive Investment

Schedule 13G Amendment No. 2 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)1 Park-Ohio Holdings Corp. (Name of Issuer) Common Stock, $1 par value (Title of Class of Securities) 700666100 (CUSIP Number) December 31, 2016 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate t

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