DCI / Donaldson Company, Inc. - SEC Filings, Annual Report, Proxy Statement

Donaldson Company, Inc.
US ˙ NYSE ˙ US2576511099

Basic Stats
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CIK 29644
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 Donaldson Company, Inc.
SEC Filings (Chronological Order)
This page provides a complete, chronological list of SEC Filings, excluding ownership filings which we provide elsewhere.
August 27, 2025 EX-99.1

Donaldson Reports Record Fourth Quarter; Full-Year 2025 Sales and Earnings Fiscal 2026 Guidance Centered on Record Sales of $3.8 billion and EPS of $4.00

Exhibit 99.1 Donaldson Reports Record Fourth Quarter; Full-Year 2025 Sales and Earnings Fiscal 2026 Guidance Centered on Record Sales of $3.8 billion and EPS of $4.00 Fourth Quarter Fiscal 2025 Highlights (All comparisons against the fourth quarter fiscal 2024 unless otherwise noted) •Sales of $981 million, up 4.8% •Generally accepted accounting principles (GAAP) earnings per share (EPS)1 of $0.97

August 27, 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 27, 2025 DONALDSON COMPANY

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 27, 2025 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Emp

June 17, 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): June 12, 2025 DONALDSON COMPANY,

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 12, 2025 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Emplo

June 17, 2025 EX-10.1

SECOND AMENDMENT TO CREDIT AGREEMENT Dated as of June 12, 2025 DONALDSON COMPANY, INC., as the Company, WELLS FARGO BANK, NATIONAL ASSOCIATION, as the Administrative Agent and an L/C Issuer, U.S. BANK NATIONAL ASSOCIATION, as the Syndication Agent, T

EX-10.1 Exhibit 10.1 EXECUTION VERSION SECOND AMENDMENT TO CREDIT AGREEMENT Dated as of June 12, 2025 among DONALDSON COMPANY, INC., as the Company, WELLS FARGO BANK, NATIONAL ASSOCIATION, as the Administrative Agent and an L/C Issuer, U.S. BANK NATIONAL ASSOCIATION, as the Syndication Agent, THE NEW L/C ISSUER, and THE OTHER LENDERS (INCLUDING THE NEW LENDERS) PARTY HERETO WELLS FARGO SECURITIES,

June 5, 2025 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2024 OR o TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 1-7891 A. Full title of the plan and

June 3, 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): June 2, 2025 DONALDSON COMPANY, I

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 2, 2025 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Employ

June 3, 2025 EX-99.1

Donaldson Reports Third Quarter Fiscal Year 2025 Sales and Earnings Record third quarter sales driven by continued growth of replacement parts Further progress on cost and footprint optimization efforts Accelerated share repurchase, announced 11% qua

Exhibit 99.1 Donaldson Reports Third Quarter Fiscal Year 2025 Sales and Earnings Record third quarter sales driven by continued growth of replacement parts Further progress on cost and footprint optimization efforts Accelerated share repurchase, announced 11% quarterly dividend increase Raising fiscal 2025 adjusted EPS guidance MINNEAPOLIS (June 3, 2025) — Donaldson Company, Inc. (NYSE: DCI) (Dona

June 3, 2025 10-Q

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

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 APRIL 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 1-7891 DONALDSON C

June 3, 2025 EX-99.2

Donaldson Appoints Richard Lewis Chief Operating Officer

Exhibit 99.2 Donaldson Appoints Richard Lewis Chief Operating Officer MINNEAPOLIS (June 2, 2025) — Donaldson Company, Inc. (NYSE: DCI), a leading worldwide provider of innovative filtration products and solutions, today announced the appointment of Richard Lewis as chief operating officer, effective August 1, 2025. In his new role, Lewis will oversee the company’s three segments as well as its ent

June 3, 2025 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Bradley J.

June 3, 2025 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

May 30, 2025 EX-1.01

Exhibit 1.01 — Conflict Minerals Report.

Exhibit 1.01 Conflict Minerals Report of Donaldson Company, Inc. In accordance with Rule 13p-1 under the Securities Exchange Act of 1934 1. Introduction and Summary This report for the year ended December 31, 2024 is presented to comply with Rule 13p-1 under the Securities Exchange Act of 1934 (the Rule). The Rule was adopted by the Securities and Exchange Commission (SEC) to implement reporting a

May 30, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Donaldson Company, Inc. (Exact name of the registrant as specified in its charter) Delaware 1-7897 41-0222640 (State or other jurisdiction o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Donaldson Company, Inc. (Exact name of the registrant as specified in its charter) Delaware 1-7897 41-0222640 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No) 1400 West 94th Street Minneapolis, Minnesota 55431 (Address

May 15, 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): 5/14/2025 DONALDSON COMPANY, INC.

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): 5/14/2025 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Employer

May 15, 2025 EX-99.1

Consulting Agreement between Donaldson Company, Inc., and Thomas R. Scalf, dated May 14, 2025.

March 4, 2025 10-Q

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

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 JANUARY 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 1-7891 DONALDSON

March 4, 2025 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

March 4, 2025 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Bradley J.

February 27, 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): February 27, 2025 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

February 27, 2025 EX-99.1

Donaldson Reports Second Quarter Fiscal Year 2025 Sales and Earnings Second quarter sales of $870.0 million, down 0.8% year over year, up 0.9% in constant currency GAAP EPS of $0.79, down 2.2% versus 2024; Adjusted EPS of $0.83, up 2.5% Continuing to

Exhibit 99.1 Donaldson Reports Second Quarter Fiscal Year 2025 Sales and Earnings Second quarter sales of $870.0 million, down 0.8% year over year, up 0.9% in constant currency GAAP EPS of $0.79, down 2.2% versus 2024; Adjusted EPS of $0.83, up 2.5% Continuing to project record fiscal 2025 EPS MINNEAPOLIS (February 27, 2025) — Donaldson Company, Inc. (NYSE: DCI) (Donaldson or the Company), a globa

December 6, 2024 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Bradley J.

December 6, 2024 10-Q

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

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 OCTOBER 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 1-7891 DONALDSON

December 6, 2024 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

December 3, 2024 EX-99.1

Donaldson Reports Record First Quarter Fiscal 2025 Sales and Earnings First quarter sales of $900.1 million, a 6.4% year-over-year increase GAAP EPS of $0.81, up 8.1% versus prior year; adjusted EPS of $0.83 Reaffirming fiscal 2025 outlook

Exhibit 99.1 Donaldson Reports Record First Quarter Fiscal 2025 Sales and Earnings First quarter sales of $900.1 million, a 6.4% year-over-year increase GAAP EPS of $0.81, up 8.1% versus prior year; adjusted EPS of $0.83 Reaffirming fiscal 2025 outlook MINNEAPOLIS (December 3, 2024) — Donaldson Company, Inc. (NYSE: DCI) (Donaldson or the Company), a global leader in technology-led filtration produ

December 3, 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): December 3, 2024 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Em

November 26, 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): November 22, 2024 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

October 29, 2024 8-K

Regulation FD Disclosure, 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): October 25, 2024 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Em

October 2, 2024 DEFA14A

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

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

October 2, 2024 DEF 14A

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

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

September 27, 2024 EX-21

Wholly Owned Subsidiaries, Joint Ventures and Partnerships

Exhibit 21 Wholly Owned Subsidiaries, Joint Ventures and Partnerships Wholly Owned Subsidiaries Name of Company Where Organized Donaldson Australasia Pty.

September 27, 2024 EX-19

Securities Trading and Information Disclosure Policy

Exhibit 19 Donaldson Company, Inc. Securities Trading and Information Disclosure Policy Approved September 27, 2024 I.Purpose Federal and state securities laws prohibit individuals from trading in the securities of a company while they are aware of material information about that company that is not generally known or available to the public. Such trading is often referred to as “insider trading.”

September 27, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended July 31, 2024 or ☐ Transition Report Pursuant to Sectio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended July 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: 1-7891 DONALDSON COMPANY, INC. (Exact n

September 27, 2024 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

September 27, 2024 EX-10.AA

Compensation Plan for Non-Employee Directors under the 2019 Master Stock Incentive Plan, as amended on January 24, 2024 (Filed as Exhibit 10-AA to 2024 Form 10-K Report) ***

Exhibit 10-AA DONALDSON COMPANY, INC. COMPENSATION PLAN FOR NON-EMPLOYEE DIRECTORS Amended on January 25, 2024 I. Introduction The Board of Directors of Donaldson Company, Inc. (the “Company”) has adopted stock ownership guidelines attached hereto as Exhibit A because it believes that it is in the best interests of the Company and its stockholders for non-employee directors of the Company to have

September 27, 2024 EX-97

Mandatory Compensation Recover Policy

Exhibit 97 DONALDSON COMPANY, INC. MANDATORY COMPENSATION RECOVERY POLICY Adopted: November 17, 2023 Policy The Board of Directors (the “Board”) of Donaldson Company, Inc. (the “Company”) has adopted this Mandatory Compensation Recovery Policy (this “Policy”) pursuant to Rule 10D-1 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), the Securities and Exchange Commission (“SEC

September 27, 2024 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

September 27, 2024 EX-10.I

Second Amendment, dated as of December 21, 2023, to the Deferred Compensation and 401(K) Excess Plan (2020 Restatement) (Filed as Exhibit 10-I to 2024 Form 10-K Report)***

Exhibit 10-I SECOND AMENDMENT OF DONALDSON COMPANY, INC. DEFERRED COMPENSATION AND 401(k) EXCESS PLAN (2020 Restatement) WHEREAS, Donaldson Company, Inc., a Delaware corporation (the “Principal Sponsor”) has heretofore established and maintains a non-qualified, unfunded supplemental deferred compensation plan for the benefit of a select group of highly compensated employees known as the “DONALDSON

September 27, 2024 EX-24

Powers of Attorney

Exhibit 24 POWER OF ATTORNEY The undersigned does hereby constitute and appoint Amy C.

August 28, 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 28, 2024 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Emp

August 28, 2024 EX-99.1

Donaldson Reports Record Fourth Quarter and Fiscal Year 2024 Sales and Earnings

Exhibit 99.1 Donaldson Reports Record Fourth Quarter and Fiscal Year 2024 Sales and Earnings Fourth Quarter Fiscal 2024 Highlights (All comparisons against the fourth quarter fiscal 2023 unless otherwise noted) •Sales of $935 million, up 6.4% •GAAP EPS of $0.90, up 20.0%; adjusted EPS of $0.94 •Returned approximately $82 million to shareholders through share repurchases and dividends •Announced pl

June 26, 2024 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2023 OR o TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 1-7891 A. Full title of the plan and

June 24, 2024 EX-99

Donaldson Company Announces Leadership Role Changes

Exhibit 99.1 For more information, contact: Sarika Dhadwal (952) 887-3753 [email protected] Donaldson Company Announces Leadership Role Changes MINNEAPOLIS (June 24, 2024) — Donaldson Company, Inc. (NYSE: DCI), a leading worldwide provider of innovative filtration products and solutions, today announced the following leadership role changes effective August 1, 2024: ▪Andrew Dahlgren, 53

June 24, 2024 8-K

Regulation FD Disclosure, 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): June 24, 2024 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Emplo

June 4, 2024 EX-99.1

Donaldson Reports Record Third Quarter Fiscal Year 2024 Sales and Earnings Third quarter sales increased 6.0% year over year to $927.9 million EPS of $0.92, up 21.7% versus 2023 Raising fiscal 2024 EPS guidance

Exhibit 99.1 Donaldson Reports Record Third Quarter Fiscal Year 2024 Sales and Earnings Third quarter sales increased 6.0% year over year to $927.9 million EPS of $0.92, up 21.7% versus 2023 Raising fiscal 2024 EPS guidance MINNEAPOLIS (June 4, 2024) — Donaldson Company, Inc. (NYSE: DCI) (Donaldson or the Company), a global leader in technology-led filtration products and solutions, today reported

June 4, 2024 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

June 4, 2024 10-Q

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

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 APRIL 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 1-7891 DONALDSON C

June 4, 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): June 4, 2024 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Employ

June 4, 2024 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

May 31, 2024 EX-1.01

Exhibit 1.01 — Conflict Minerals Report.

Exhibit 1.01 Conflict Minerals Report of Donaldson Company, Inc. In accordance with Rule 13p-1 under the Securities Exchange Act of 1934 1. Introduction and Summary This report for the year ended December 31, 2023 is presented to comply with Rule 13p-1 under the Securities Exchange Act of 1934 (the Rule). The Rule was adopted by the Securities and Exchange Commission (SEC) to implement reporting a

May 31, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Donaldson Company, Inc. (Exact name of the registrant as specified in its charter) Delaware 1-7897 41-0222640 (State or other jurisdiction o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Donaldson Company, Inc. (Exact name of the registrant as specified in its charter) Delaware 1-7897 41-0222640 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No) 1400 West 94th Street Minneapolis, Minnesota 55431 (Address

March 4, 2024 10-Q

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

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 JANUARY 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 1-7891 DONALDSON

March 4, 2024 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

March 4, 2024 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

February 28, 2024 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): February 28, 2024 DONALDSON COMPA

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): February 28, 2024 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

February 28, 2024 EX-99.1

Donaldson Reports Record Second Quarter Fiscal Year 2024 Sales and Earnings Second quarter sales were $876.7 million, up 5.8% compared with 2023 EPS of $0.81 up 15.9% versus 2023 GAAP EPS and up 8.0% versus 2023 adjusted EPS Raising fiscal 2024 opera

Exhibit 99.1 Donaldson Reports Record Second Quarter Fiscal Year 2024 Sales and Earnings Second quarter sales were $876.7 million, up 5.8% compared with 2023 EPS of $0.81 up 15.9% versus 2023 GAAP EPS and up 8.0% versus 2023 adjusted EPS Raising fiscal 2024 operating margin and EPS guidance On track to deliver record full-year sales and EPS MINNEAPOLIS (February 28, 2024) — Donaldson Company, Inc.

February 13, 2024 SC 13G/A

DCI / Donaldson Company, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 13)* Name of issuer: Donaldson Co Inc Title of Class of Securities: Common Stock CUSIP Number: 257651109 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ R

December 6, 2023 10-Q

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

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 OCTOBER 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 1-7891 DONALDSON

December 6, 2023 S-8

As filed with the Securities and Exchange Commission on December 6, 2023.

As filed with the Securities and Exchange Commission on December 6, 2023. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 41-0222640 (State or other jurisdiction of incorporation or organization) (I.R.

December 6, 2023 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

December 6, 2023 EX-24.1

Powers of Attorney

EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Tod E. Carpenter, Amy C. Becker and Andrew J. Cebulla, and each of them, the undersigned's true and lawful attorneys-in-fact and agents, each acting alone, with the powers of substitution and revocation, for the undersigned and in the undersigned's name,

December 6, 2023 EX-3.A

Restated Certificate of Incorporation of Registrant

RESTATED CERTIFICATE OF INCORPORATION OF DONALDSON COMPANY, INC. Donaldson Company, Inc. (the “Corporation”), a corporation organized and existing under and by virtue of the provisions of the General Corporation Law of the State of Delaware (the “DGCL”), hereby certifies as follows: 1.The name of the Corporation is Donaldson Company, Inc., and the Corporation’s original Certificate of Incorporatio

December 6, 2023 EX-FILING FEES

Calculation of Filing Fee Table

Exhibit 107 CALCULATION OF FILING FEE TABLE Form S-8 (Form Type) DONALDSON COMPANY, INC.

December 6, 2023 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

November 29, 2023 EX-99.1

Donaldson Reports First Quarter Fiscal Year 2024 Sales and Earnings First quarter sales were $846.3 million compared with $847.3 million in fiscal 2023 EPS of $0.75, up 6.8% versus 2023 GAAP EPS of $0.70, flat versus 2023 adjusted EPS of $0.75 Fiscal

Exhibit 99.1 Donaldson Reports First Quarter Fiscal Year 2024 Sales and Earnings First quarter sales were $846.3 million compared with $847.3 million in fiscal 2023 EPS of $0.75, up 6.8% versus 2023 GAAP EPS of $0.70, flat versus 2023 adjusted EPS of $0.75 Fiscal 2024 sales and EPS projected at record levels, consistent with previous guidance MINNEAPOLIS (November 29, 2023) — Donaldson Company, In

November 29, 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 29, 2023 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

November 22, 2023 8-K/A

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A 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 17, 2023 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S.

November 21, 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): November 17, 2023 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

October 3, 2023 DEF 14A

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

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

October 3, 2023 DEFA14A

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

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

September 28, 2023 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, 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 22, 2023 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S.

September 28, 2023 EX-3.A

Certificate of Elimination of Series A Junior Participating Preferred Stock, dated as of September 22, 2023.

Exhibit 3-A CERTIFICATE OF ELIMINATION OF SERIES A JUNIOR PARTICIPATING PREFERRED STOCK OF DONALDSON COMPANY, INC.

September 22, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended July 31, 2023 or ☐ Transition Report Pursuant to Sectio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended July 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: 1-7891 DONALDSON COMPANY, INC. (Exact n

September 22, 2023 EX-24

Powers of Attorney

Exhibit 24 POWER OF ATTORNEY The undersigned does hereby constitute and appoint Amy C.

September 22, 2023 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

September 22, 2023 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

September 22, 2023 EX-21

Wholly Owned Subsidiaries, Joint Ventures and Partnerships

Exhibit 21 Wholly Owned Subsidiaries, Joint Ventures and Partnerships Wholly Owned Subsidiaries Name of Company Where Organized BOFA International Ltd.

August 29, 2023 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 29, 2023 DONALDSON COMPANY

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 29, 2023 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Emp

August 29, 2023 EX-99.1

Donaldson Reports Fourth Quarter and Record Fiscal Year 2023 Sales and Earnings Fourth quarter sales declined 1.2% compared with fiscal 2022; full-year sales increased 3.8% Fourth quarter and full-year 2023 GAAP EPS of $0.75 and $2.90, respectively F

Exhibit 99.1 Donaldson Reports Fourth Quarter and Record Fiscal Year 2023 Sales and Earnings Fourth quarter sales declined 1.2% compared with fiscal 2022; full-year sales increased 3.8% Fourth quarter and full-year 2023 GAAP EPS of $0.75 and $2.90, respectively Fourth quarter adjusted EPS of $0.78; full-year adjusted EPS of $3.04 Fiscal 2024 sales guidance of 3% to 7% growth and EPS outlook of $3.

July 28, 2023 EX-3.B

Amended and Restated Bylaws of Registrant, dated as of July 28, 2023 (Filed as Exhibit 3-B to Form 8-K Report filed on July 28, 2023)

AMENDED AND RESTATED BYLAWS OF DONALDSON COMPANY, INC. (as of July 28, 2023) 1. Offices The registered office of the Company shall be in Wilmington, Delaware, and the resident agent in charge thereof shall be The Corporation Trust Company. The Company’s registered office or registered agent may be changed from time to time by action of the Board of Directors. The Company may also have an office or

July 28, 2023 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 28, 2023 DONALDSON COMPANY,

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 28, 2023 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Emplo

June 5, 2023 10-Q

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

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 APRIL 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 1-7891 DONALDSON C

June 5, 2023 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

June 5, 2023 EX-4.A

First Amendment to Credit Agreement dated April 28, 2023 (Filed as Exhibit 4-A to Form 10-Q for the third quarter ended April 30, 2023)

Exhibit 4-A FIRST AMENDMENT TO CREDIT AGREEMENT This FIRST AMENDMENT TO CREDIT AGREEMENT (this “Amendment”) is dated as of April 28, 2023 (the “First Amendment Effective Date”), and is by and among: (a) DONALDSON COMPANY, INC.

June 5, 2023 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

May 31, 2023 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): May 31, 2023 DONALDSON COMPANY, I

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 31, 2023 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Employ

May 31, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Donaldson Company, Inc. (Exact name of the registrant as specified in its charter) Delaware 1-7897 41-0222640 (State or other jurisdiction o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Donaldson Company, Inc. (Exact name of the registrant as specified in its charter) Delaware 1-7897 41-0222640 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No) 1400 West 94th Street Minneapolis, Minnesota 55431 (Address

May 31, 2023 EX-1.01

Exhibit 1.01 — Conflict Minerals Report.

Exhibit 1.01 Conflict Minerals Report of Donaldson Company, Inc. In accordance with Rule 13p-1 under the Securities Exchange Act of 1934 1. Introduction and Summary This report for the year ended December 31, 2022 is presented to comply with Rule 13p-1 under the Securities Exchange Act of 1934 (the Rule). The Rule was adopted by the Securities and Exchange Commission (SEC) to implement reporting a

May 31, 2023 EX-99.1

Donaldson Reports Record Third Quarter 2023 Sales and Earnings Third quarter 2023 sales increased 2.6% year over year to $875.7 million Operating margin of 14.2%, up 120 basis points from prior year EPS of $0.76 increased 14.0% versus 2022 Donaldson

Exhibit 99.1 Donaldson Reports Record Third Quarter 2023 Sales and Earnings Third quarter 2023 sales increased 2.6% year over year to $875.7 million Operating margin of 14.2%, up 120 basis points from prior year EPS of $0.76 increased 14.0% versus 2022 Donaldson maintains fiscal 2023 sales and EPS outlook MINNEAPOLIS (May 31, 2023) — Donaldson Company, Inc. (NYSE: DCI) (Donaldson or the Company) t

May 24, 2023 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2022 OR o TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 1-7891 A. Full title of the plan and

March 8, 2023 10-Q

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

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 JANUARY 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 1-7891 DONALDSON

March 8, 2023 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

March 8, 2023 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

March 1, 2023 EX-99.1

Donaldson Reports Record Second Quarter 2023 Sales and Earnings Second quarter 2023 sales increased 3.2% year over year to $828.3 million, a quarterly record GAAP operating margin of 14.0%; Adjusted operating margin of 15.2% GAAP EPS of $0.70, up 22.

Exhibit 99.1 Donaldson Reports Record Second Quarter 2023 Sales and Earnings Second quarter 2023 sales increased 3.2% year over year to $828.3 million, a quarterly record GAAP operating margin of 14.0%; Adjusted operating margin of 15.2% GAAP EPS of $0.70, up 22.0% and adjusted EPS of $0.75, up 32.0% versus 2022 Donaldson tightens fiscal 2023 EPS guidance to high end of previous range MINNEAPOLIS

March 1, 2023 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): March 1, 2023 DONALDSON COMPANY,

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 1, 2023 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Emplo

February 9, 2023 SC 13G/A

DCI / Donaldson Company, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 12)* Name of issuer: Donaldson Co. Inc. Title of Class of Securities: Common Stock CUSIP Number: 257651109 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒

January 31, 2023 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): January 25, 2023 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Em

January 31, 2023 EX-10.1

Change in Control Severance Plan

Exhibit 10.1 DONALDSON COMPANY, INC. MANAGEMENT CHANGE IN CONTROL SEVERANCE PLAN (Adopted Effective February 1, 2023) Donaldson Company, Inc., (together with any of its Affiliates or successors (including following any Change in Control), the “Company”) has established the Donaldson Company, Inc. Management Change in Control Severance Plan (the “Plan”) to provide certain severance pay and other be

January 25, 2023 EX-99.1

DONALDSON COMPANY, INC. AND SUBSIDIARIES SEGMENT DETAIL (In millions) Year ended July 31, 2022 2021 2020 Net sales Mobile Solutions segment Off-Road $ 390.5 $ 316.3 $ 244.3 On-Road 136.1 138.8 124.4 Aftermarket 1,599.9 1,363.3 1,195.8 Total Mobile So

Exhibit 99.1 Select Recast Segment Results The following are summaries of segment net sales, earnings (loss) before income taxes and earnings before income taxes percentage presented under the new segment reporting structure for the periods presented: DONALDSON COMPANY, INC. AND SUBSIDIARIES SEGMENT DETAIL (In millions) (Unaudited) Year ended July 31, 2022 2021 2020 Net sales Mobile Solutions segm

January 25, 2023 8-K

Regulation FD Disclosure, 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): January 25, 2023 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Em

December 7, 2022 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

December 7, 2022 EX-10.A

Form of Separation and General Release Agreement, dated as of October 7, 2022, by and between Jeffrey E. Spethmann and Donaldson Company, Inc.

Exhibit 10-A SEPARATION AND GENERAL RELEASE AGREEMENT This Separation and General Release Agreement (?Agreement?) is entered into by and between Jeffrey E.

December 7, 2022 10-Q

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

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 OCTOBER 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 1-7891 DONALDSON

December 7, 2022 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

November 30, 2022 EX-99.1

Donaldson Company Reports Record First Quarter 2023 Sales and Earnings First quarter 2023 sales increased 11.4% from 2022 to $847.3 million GAAP operating margin of 14.1%; Adjusted operating margin of 15.0% GAAP EPS of $0.70, up 15.3% and adjusted EP

Exhibit 99.1 Donaldson Company Reports Record First Quarter 2023 Sales and Earnings First quarter 2023 sales increased 11.4% from 2022 to $847.3 million GAAP operating margin of 14.1%; Adjusted operating margin of 15.0% GAAP EPS of $0.70, up 15.3% and adjusted EPS of $0.75, up 22.9% versus 2022 Donaldson reiterates fiscal 2023 guidance MINNEAPOLIS (November 30, 2022) ? Donaldson Company, Inc. (NYS

November 30, 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 30, 2022 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

November 21, 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): November 18, 2022 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

October 4, 2022 DEF 14A

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

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

October 4, 2022 DEFA14A

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

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

October 4, 2022 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): October 4, 2022 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Emp

September 23, 2022 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

September 23, 2022 EX-24

Powers of Attorney

Exhibit 24 POWER OF ATTORNEY The undersigned does hereby constitute and appoint Amy C.

September 23, 2022 EX-21

Wholly Owned Subsidiaries, Joint Ventures and Partnerships

Exhibit 21 Wholly Owned Subsidiaries, Joint Ventures and Partnerships Wholly Owned Subsidiaries Name of Company Where Organized BOFA Americas Inc.

September 23, 2022 EX-10.AL

Compensation Plan for Non-Employee Directors under the 2019 Master Stock Incentive Plan as amended on January 26, 2022 ***

Exhibit 10-AL DONALDSON COMPANY, INC. COMPENSATION PLAN FOR NON-EMPLOYEE DIRECTORS Amended on January 26, 2022 I. Introduction The Board of Directors of Donaldson Company, Inc. (the ?Company?) has adopted stock ownership guidelines attached hereto as Exhibit A because it believes that it is in the best interests of the Company and its stockholders for non-employee directors of the Company to have

September 23, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended July 31, 2022 or ☐ Transition Report Pursuant to Sectio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ? Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended July 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: 1-7891 DONALDSON COMPANY, INC. (Exact n

September 23, 2022 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

August 31, 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 31, 2022 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Emp

August 31, 2022 EX-99.1

Donaldson Reports Record Fourth Quarter and Full-Year 2022 Earnings; Issues Full-Year 2023 Guidance Fourth quarter sales rose 15.1% compared to fiscal 2021; full-year 2022 sales up 15.9% Fourth quarter and full-year 2022 GAAP EPS of $0.81 and $2.66,

Exhibit 99.1 Donaldson Reports Record Fourth Quarter and Full-Year 2022 Earnings; Issues Full-Year 2023 Guidance Fourth quarter sales rose 15.1% compared to fiscal 2021; full-year 2022 sales up 15.9% Fourth quarter and full-year 2022 GAAP EPS of $0.81 and $2.66, respectively Fourth quarter adjusted EPS of $0.84, up 27.3%; full-year 2022 adjusted EPS of $2.68, up 15.5% Fiscal 2023 sales expected to

June 6, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

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 APRIL 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 1-7891 DONALDSON C

June 6, 2022 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

June 6, 2022 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

June 1, 2022 EX-99.1

Donaldson Company Reports Record Fiscal Third Quarter 2022 Earnings Third quarter 2022 sales increased 11.5% from 2021 to a quarterly record of $853.2 million GAAP EPS were $0.67 compared with $0.66 in 2021 Donaldson increases fiscal 2022 sales guida

Exhibit 99.1 Donaldson Company Reports Record Fiscal Third Quarter 2022 Earnings Third quarter 2022 sales increased 11.5% from 2021 to a quarterly record of $853.2 million GAAP EPS were $0.67 compared with $0.66 in 2021 Donaldson increases fiscal 2022 sales guidance and narrows EPS range MINNEAPOLIS (June 1, 2022) ? Donaldson Company, Inc. (NYSE: DCI) (Donaldson or the Company) today reported thir

June 1, 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): June 1, 2022 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Employ

May 31, 2022 EX-1.01

Exhibit 1.01 — Conflict Minerals Report.

Exhibit 1.01 Conflict Minerals Report of Donaldson Company, Inc. In accord with Rule 13p-1 under the Securities Exchange Act of 1934 1. Introduction and Summary This report for the year ended December 31, 2021 is presented to comply with Rule 13p-1 under the Securities Exchange Act of 1934 (the Rule). The Rule was adopted by the Securities and Exchange Commission (SEC) to implement reporting and d

May 31, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Donaldson Company, Inc. (Exact name of the registrant as specified in its charter) Delaware 1-7897 41-0222640 (State or other jurisdiction o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Donaldson Company, Inc. (Exact name of the registrant as specified in its charter) Delaware 1-7897 41-0222640 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No) 1400 West 94th Street Minneapolis, Minnesota 55431 (Address

May 20, 2022 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2021 OR o TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 1-7891 A. Full title of the plan and

March 30, 2022 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 25, 2022 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Empl

March 9, 2022 SC 13G/A

DCI / Donaldson Company, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: Donaldson Co. Inc. Title of Class of Securities: Common Stock CUSIP Number: 257651109 Date of Event Which Requires Filing of this Statement: February 28, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ?

March 3, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

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 JANUARY 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 1-7891 DONALDSON

March 3, 2022 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

March 3, 2022 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

March 2, 2022 EX-99.1

Donaldson Company Reports Record Fiscal Second Quarter 2022 Earnings Second quarter 2022 sales increased 18.2% from 2021 to a quarterly record of $802.5 million GAAP EPS increased 30.4%; Adjusted EPS increased 9.8% Donaldson increases fiscal 2022 sal

Exhibit 99.1 Donaldson Company Reports Record Fiscal Second Quarter 2022 Earnings Second quarter 2022 sales increased 18.2% from 2021 to a quarterly record of $802.5 million GAAP EPS increased 30.4%; Adjusted EPS increased 9.8% Donaldson increases fiscal 2022 sales and EPS guidance MINNEAPOLIS (March 2, 2022) ? Donaldson Company, Inc. (NYSE: DCI) (Donaldson or the Company) today reported second qu

March 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): March 2, 2022 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Emplo

February 9, 2022 SC 13G/A

DCI / Donaldson Company, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: Donaldson Co. Inc. Title of Class of Securities: Common Stock CUSIP Number: 257651109 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒

January 27, 2022 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): January 27, 2022 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Em

December 15, 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): December 6, 2021 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Em

December 9, 2021 SC 13G/A

DCI / Donaldson Company, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9)* Name of issuer: Donaldson Co. Inc. Title of Class of Securities: Common Stock CUSIP Number: 257651109 Date of Event Which Requires Filing of this Statement: November 30, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ??

December 8, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

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 OCTOBER 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 1-7891 DONALDSON

December 8, 2021 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

December 8, 2021 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

December 1, 2021 EX-99.1

Donaldson Company Reports Record Fiscal First Quarter 2022 Sales and EPS First quarter 2022 sales increased 19.5% from 2021 to a quarterly record of $760.9 million First quarter 2022 operating margin increased to 14.1% from 13.7% in 2021 First quarte

Exhibit 99.1 Donaldson Company Reports Record Fiscal First Quarter 2022 Sales and EPS First quarter 2022 sales increased 19.5% from 2021 to a quarterly record of $760.9 million First quarter 2022 operating margin increased to 14.1% from 13.7% in 2021 First quarter 2022 EPS increased 26.1% to $0.61 versus $0.48 in 2021 Donaldson increases fiscal 2022 sales and EPS guidance MINNEAPOLIS (December 1,

December 1, 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): December 1, 2021 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Em

November 22, 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): November 19, 2021 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

October 6, 2021 DEFA14A

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

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

October 6, 2021 DEF 14A

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

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

September 24, 2021 EX-21

Wholly Owned Subsidiaries, Joint Ventures and Partnerships

Exhibit 21 Wholly Owned Subsidiaries, Joint Ventures and Partnerships Wholly Owned Subsidiaries Name of Company Where Organized BOFA Americas Inc.

September 24, 2021 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended July 31, 2021 or ☐ Transition Report Pursuant to Sectio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ? Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended July 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: 1-7891 DONALDSON COMPANY, INC. (Exact n

September 24, 2021 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

September 24, 2021 EX-24

Powers of Attorney

Exhibit 24 POWER OF ATTORNEY The undersigned does hereby constitute and appoint Amy C.

September 24, 2021 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

September 2, 2021 EX-99.1

Donaldson Company Reports Fourth Quarter and Full-Year 2021 Earnings Fiscal 2021 sales increased to a record $2.854 billion; Q4’21 sales rose 25.2% versus Q4’20 Full-year and Q4’21 GAAP gross margin rose 20 bps and 70 bps, respectively, versus fiscal

Exhibit 99.1 Donaldson Company Reports Fourth Quarter and Full-Year 2021 Earnings Fiscal 2021 sales increased to a record $2.854 billion; Q4?21 sales rose 25.2% versus Q4?20 Full-year and Q4?21 GAAP gross margin rose 20 bps and 70 bps, respectively, versus fiscal 2020 Record fiscal 2021 and Q4?21 GAAP EPS of $2.24 and $0.66 up 12% and 32%, respectively Fiscal 2022 sales forecasted to increase betw

September 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): September 2, 2021 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

June 7, 2021 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

June 7, 2021 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

June 7, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

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 APRIL 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 1-7891 DONALDSON C

June 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): June 2, 2021 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Employ

June 2, 2021 EX-99.1

Donaldson Company Reports Third Quarter Earnings Strength across all regions drives sales to a quarterly record of $765 million Third quarter 2021 EPS increased 32% to $0.66 from $0.50 in 2020 Fiscal 2021 sales guidance increased to a range of 9% to

Exhibit 99.1 Donaldson Company Reports Third Quarter Earnings Strength across all regions drives sales to a quarterly record of $765 million Third quarter 2021 EPS increased 32% to $0.66 from $0.50 in 2020 Fiscal 2021 sales guidance increased to a range of 9% to 11% growth Fiscal 2021 GAAP EPS raised to a range of $2.20 to $2.26 and adjusted EPS to a range of $2.28 to $2.34 MINNEAPOLIS (June 2, 20

May 26, 2021 EX-10.2

Second Supplement, dated May 21, 2021, to Note Purchase Agreement, dated as of March 27, 2014, by and among Donaldson Company, Inc. and the purchasers named therein.

Exhibit 10.2 EXECUTION VERSION SECOND SUPPLEMENT TO NOTE PURCHASE AGREEMENT THIS SECOND SUPPLEMENT is entered into as of May 21, 2021 (this ?Second Supplement?) between Donaldson Company, Inc., a Delaware corporation (the ?Company?), and the Purchasers listed in the attached Schedule A (the ?Purchasers?). RECITALS A. The Company has entered into a Note Purchase Agreement dated as of March 27, 2014

May 26, 2021 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, 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 21, 2021 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Commission File Number: 1-7891 Delaware 41-0222640 (State or other jurisdiction of incorpor

May 26, 2021 EX-10.1

Credit Agreement, dated as of May 21, 2021, among Donaldson Company, Inc. (the “Company”), the subsidiaries of the Company from time to time party thereto, each of the lenders from time to time party thereto (the “Lenders”) and Wells Fargo Bank, National Association, as administrative agent for the Lenders and as an L/C Issuer.

Exhibit 10.1 EXECUTION VERSION Published CUSIP Numbers: 25764JAK7 (Transaction) 25764JAL5 (Revolver) CREDIT AGREEMENT Dated as of May 21, 2021 among DONALDSON COMPANY, INC., as the Company, CERTAIN SUBSIDIARIES OF THE COMPANY PARTY HERETO, as the Borrowing Subsidiaries, WELLS FARGO BANK, NATIONAL ASSOCIATION, as the Administrative Agent and the L/C Issuer, U.S. BANK NATIONAL ASSOCIATION, as the Sy

May 20, 2021 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Donaldson Company, Inc. (Exact name of the registrant as specified in its charter) Delaware 1-7897 41-0222640 (State or other jurisdiction o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Donaldson Company, Inc. (Exact name of the registrant as specified in its charter) Delaware 1-7897 41-0222640 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No) 1400 West 94th Street Minneapolis, Minnesota 55431 (Address

May 20, 2021 EX-1.01

Conflict Minerals Report.

Exhibit 1.01 Conflict Minerals Report of Donaldson Company, Inc. In accord with Rule 13p-1 under the Securities Exchange Act of 1934 1. Introduction and Summary This report for the year ended December 31, 2020 is presented to comply with Rule 13p-1 under the Securities Exchange Act of 1934 (the “Rule”). The Rule was adopted by the Securities and Exchange Commission (“SEC”) to implement reporting a

May 7, 2021 11-K

- 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 FORM 11-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2020 or o TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 1-7891 A. Full title of the plan and t

March 2, 2021 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

March 2, 2021 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

March 2, 2021 10-Q

Quarterly Report - 10-Q

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 JANUARY 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 1-7891 DONALDSON

February 25, 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): February 25, 2021 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

February 25, 2021 EX-99.1

Donaldson Company Reports Second Quarter 2021 Earnings and Provides Full Year 2021 Guidance Sales trends improving, double-digit sequential sales growth expected in second half of fiscal 2021 Donaldson expects fiscal 2021 sales to increase between 5%

Exhibit 99.1 Donaldson Company Reports Second Quarter 2021 Earnings and Provides Full Year 2021 Guidance Sales trends improving, double-digit sequential sales growth expected in second half of fiscal 2021 Donaldson expects fiscal 2021 sales to increase between 5% and 8% Second quarter GAAP EPS of $0.44 includes $0.08 of restructuring expense MINNEAPOLIS (February 25, 2021) ? Donaldson Company, Inc

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)* Name of issuer: Donaldson Co. Inc. Title of Class of Securities: Common Stock CUSIP Number: 257651109 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ 

December 4, 2020 10-Q

Quarterly Report - 10-Q

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 OCTOBER 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 1-7891 DONALDSON

December 4, 2020 EX-10.AO

Compensation Plan for Non-Employee Directors under the 2019 Master Stock Incentive Plan as amended on September 24, 2020**

Exhibit 10-AO DONALDSON COMPANY, INC. COMPENSATION PLAN FOR NON-EMPLOYEE DIRECTORS Amended on September 25, 2020 I. Introduction The Board of Directors of Donaldson Company, Inc. (the “Company”) has adopted stock ownership guidelines attached hereto as Exhibit A because it believes that it is in the best interests of the Company and its stockholders for non-employee directors of the Company to hav

December 4, 2020 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

December 4, 2020 EX-10.AN

Form of Restricted Stock Unit Award Agreement (Graded Vesting) under the 2019 Master Stock Incentive Plan (commencing with

EX-10.AN 3 exhibit10-an20201031.htm EX-10.AN Exhibit 10-AN 2019 MASTER STOCK INCENTIVE PLAN RESTRICTED STOCK UNIT AWARD AGREEMENT This Restricted Stock Unit Award Agreement (the “Agreement”) is made as of the date specified in the individual grant summary, by and between Donaldson Company, Inc., a Delaware corporation (“Donaldson”), and the person specified in the individual grant summary (the “Em

December 4, 2020 EX-10.A

Form of Annual Incentive Plan (commencing

Exhibit 10-A PURPOSE It is the philosophy of Donaldson Company to provide a total compensation package that attracts, retains and motivates key employees.

December 4, 2020 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

December 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): December 3, 2020 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Em

December 3, 2020 EX-99.1

Donaldson Company Reports First Quarter 2021 Earnings Total first quarter 2021 sales of replacement parts significantly outperformed new equipment Operating margin grew 0.5 percentage points from prior year, driven by gross margin Sales trends improv

Exhibit 99.1 Donaldson Company Reports First Quarter 2021 Earnings Total first quarter 2021 sales of replacement parts significantly outperformed new equipment Operating margin grew 0.5 percentage points from prior year, driven by gross margin Sales trends improving, with year-over-year growth anticipated in the second half of fiscal 2021 Fiscal 2021 operating margin expected to be up from the pri

November 23, 2020 8-K

Submission of Matters to a Vote of Security Holders - 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 20, 2020 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

October 6, 2020 DEF 14A

- DEF 14A

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

October 6, 2020 DEFA14A

- DEFA14A

donaldsoncompanyincvsmv *** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Stockholder Meeting to Be Held on November 20, 2020.

September 25, 2020 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

September 25, 2020 10-K

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended July 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: 1-7891 DONALDSON COMPANY, INC. (Exact n

September 25, 2020 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

September 25, 2020 EX-21

Wholly Owned Subsidiaries, Joint Ventures and Partnerships

Exhibit 21 Wholly Owned Subsidiaries, Joint Ventures and Partnerships Wholly Owned Subsidiaries Name of Company Where Organized BOFA Americas Inc.

September 25, 2020 EX-24

Powers of Attorney

Exhibit 24 POWER OF ATTORNEY The undersigned does hereby constitute and appoint Amy C.

September 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): September 3, 2020 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

September 3, 2020 EX-99.1

Donaldson Company Reports Fourth Quarter and Full-Year 2020 Earnings Donaldson’s fourth quarter and full-year gross margin increased in a volatile sales environment Donaldson invested $122 million for long-term growth and returned $201 million to sha

Exhibit 99.1 Donaldson Company Reports Fourth Quarter and Full-Year 2020 Earnings Donaldson’s fourth quarter and full-year gross margin increased in a volatile sales environment Donaldson invested $122 million for long-term growth and returned $201 million to shareholders Fiscal 2021 market conditions expected to be uneven; margin-improvement initiatives to continue MINNEAPOLIS (September 3, 2020)

August 6, 2020 8-K

Regulation FD Disclosure, 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): August 6, 2020 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Empl

August 6, 2020 EX-99.1

Donaldson Company Provides COVID-19 Business Update, Announces Fourth Quarter and Full-Year 2020 Earnings Conference Call

EX-99.1 2 a991businessupdate2020.htm EX-99.1 Exhibit 99.1 For more information, contact: Brad Pogalz (952) 887-3753 Donaldson Company Provides COVID-19 Business Update, Announces Fourth Quarter and Full-Year 2020 Earnings Conference Call MINNEAPOLIS (August 6, 2020) — Donaldson Company, Inc. (NYSE: DCI), a leading worldwide provider of innovative filtration products and solutions, today is providi

July 31, 2020 S-8 POS

- S-8 POS

As filed with the Securities and Exchange Commission on July 31, 2020. Registration No. 333-56027 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Post-Effective Amendment No. 1 to FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 DONALDSON COMPANY, INC. (Exact name of Registrant as specified in its charter) Delaware 41-0222640 (State or other jurisdiction of

July 31, 2020 S-8 POS

- S-8 POS

As filed with the Securities and Exchange Commission on July 31, 2020. Registration No. 002-90488 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Post-Effective Amendment No. 2 to FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 DONALDSON COMPANY, INC. (Exact name of Registrant as specified in its charter) Delaware 41-0222640 (State or other jurisdiction of

July 31, 2020 S-8 POS

- S-8 POS

As filed with the Securities and Exchange Commission on July 31, 2020. Registration No. 333-107444 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Post-Effective Amendment No. 1 to FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 DONALDSON COMPANY, INC. (Exact name of Registrant as specified in its charter) Delaware 41-0222640 (State or other jurisdiction of

June 4, 2020 11-K

- 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 FORM 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2019 or o TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 1-7891 A. Full title of the plan and t

June 3, 2020 10-Q

Quarterly Report - 10-Q

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 APRIL 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 1-7891 DONALDSON C

June 3, 2020 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

June 3, 2020 EX-24.1

Powers of Attorney

EXHIBIT 24.1 DONALDSON COMPANY, INC. POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Tod E. Carpenter, Amy C. Becker and Peter J. Keller, and each of them, the undersigned’s true and lawful attorneys-in-fact and agents, each acting alone, with the powers of substitution and revocation, for the undersigned and in t

June 3, 2020 S-8

- S-8

As filed with the Securities and Exchange Commission on June 3, 2020. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 41-0222640 (I.R.S. E

June 3, 2020 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

June 2, 2020 EX-99.1

Donaldson Company Reports Third Quarter 2020 Earnings Third quarter sales declined 11.7 percent, or 9.7 percent in local currency, slightly above forecast1 Operating margin was down 0.6 percentage points; EBITDA2 margin was flat with the prior year D

Exhibit 99.1 Donaldson Company Reports Third Quarter 2020 Earnings Third quarter sales declined 11.7 percent, or 9.7 percent in local currency, slightly above forecast1 Operating margin was down 0.6 percentage points; EBITDA2 margin was flat with the prior year Donaldson’s financial position remains strong, and the Company believes it has ample liquidity to support its near- and long-term operatio

June 2, 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): June 2, 2020 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Employ

June 1, 2020 EX-1.01

Conflict Minerals Report

Exhibit 1.01 Conflict Minerals Report of Donaldson Company, Inc. In accord with Rule 13p-1 under the Securities Exchange Act of 1934 1. Introduction and Summary This report for the year ended December 31, 2019 is presented to comply with Rule 13p-1 under the Securities Exchange Act of 1934 (the “Rule”). The Rule was adopted by the Securities and Exchange Commission (“SEC”) to implement reporting a

June 1, 2020 SD

- SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Donaldson Company, Inc. (Exact name of the registrant as specified in its charter) Delaware 1-7897 41-0222640 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No) 1400 West 94th Street Minneapolis, Minnesota 55431 (Address

May 21, 2020 EX-10.1

364-Day Revolved Credit Agreement, dated as of May 18, 2020, among Donaldson Company, Inc., U.S. Bank National Association, as Administrative Agent, and the other lenders party thereto (Filed as Exhibit 10.1 to Form 8-K Report filed on May 21, 2020)

EX-10.1 Exhibit 10.1 Published CUSIP Numbers: 25764JAH4 (Transaction) 25764JAJ0 (Revolver) 364-DAY REVOLVING CREDIT AGREEMENT Dated as of May 18, 2020 among DONALDSON COMPANY, INC., U.S. BANK NATIONAL ASSOCIATION, as Administrative Agent, and THE OTHER LENDERS PARTY HERETO U.S. BANK NATIONAL ASSOCIATION, as Sole Lead Arranger and Sole Book Manager TABLE OF CONTENTS ARTICLE I DEFINITIONS AND ACCOUN

May 21, 2020 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, 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 18, 2020 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Employ

April 29, 2020 EX-99.1

Donaldson Company Provides COVID-19 Business Update, Announces Third Quarter 2020 Earnings Conference Call Date

Exhibit 99.1 For more information, contact: Brad Pogalz (952) 887-3753 Donaldson Company Provides COVID-19 Business Update, Announces Third Quarter 2020 Earnings Conference Call Date MINNEAPOLIS (April 29, 2020) — Donaldson Company, Inc. (NYSE: DCI), a leading worldwide provider of innovative filtration products and solutions, today is providing a business update in response to the evolving COVID-

April 29, 2020 8-K

Regulation FD Disclosure, 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): April 29, 2020 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Empl

March 6, 2020 EX-31.B

31-B – Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

March 6, 2020 10-Q

Quarterly Report - 10-Q

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 JANUARY 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 1-7891 DONALDSON

March 6, 2020 EX-31.A

31-A – Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

March 5, 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 5, 2020 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Emplo

March 5, 2020 EX-99.1

Donaldson Company Reports Second Quarter 2020 Earnings Operating margin grew 0.7 percentage points in second quarter, driven by strong gross margin Second quarter 2020 GAAP EPS1 increased 8.7 percent on a sales decline of 5.9 percent Fiscal 2020 sale

Exhibit 99.1 Donaldson Company Reports Second Quarter 2020 Earnings Operating margin grew 0.7 percentage points in second quarter, driven by strong gross margin Second quarter 2020 GAAP EPS1 increased 8.7 percent on a sales decline of 5.9 percent Fiscal 2020 sales forecast updated to reflect slowing market conditions, macro-uncertainty Donaldson still expects gross margin expansion will drive oper

February 12, 2020 SC 13G/A

DCI / Donaldson Co., Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 7)* Name of issuer: Donaldson Co Inc Title of Class of Securities: Common Stock CUSIP Number: 257651109 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Ru

December 6, 2019 EX-10.AJ

Compensation Plan for Non-Employee Directors under the 2019 Master Stock Incentive Plan (Filed as Exhibit 10-AJ to Form 10-Q for the first quarter ended October 31, 2019)***

EX-10.AJ 7 exhibit10-ajxcompensat.htm EXHIBIT 10.AJ Exhibit 10-AJ DONALDSON COMPANY, INC. COMPENSATION PLAN FOR NON‑EMPLOYEE DIRECTORS Amended on , 2019 I. Introduction The Board of Directors of Donaldson Company, Inc. (the “Company”) has adopted stock ownership guidelines attached hereto as Exhibit A because it believes that it is in the best interests of the Company and its stockholders for non‑

December 6, 2019 EX-31.A

31-A – Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

December 6, 2019 EX-10.AI

Form of Restricted Stock Unit Award Agreement (Graded Vesting) under the 2019 Master Stock Incentive Plan (Filed as Exhibit 10-AI to Form 10-Q for the first quarter ended October 31, 2019)***

EX-10.AI 6 exhibit10-aixformofres.htm EXHIBIT 10.AI Exhibit 10-AI 2019 MASTER STOCK INCENTIVE PLAN RESTRICTED STOCK UNIT AWARD AGREEMENT This Restricted Stock Unit Award Agreement (the “Agreement”) is made as of the date specified in the individual grant summary, by and between Donaldson Company, Inc., a Delaware corporation (“Donaldson”), and the person specified in the individual grant summary (

December 6, 2019 EX-10.AG

Form of Performance Award Agreement under the 2019 Master Stock Incentive Plan (Filed as Exhibit 10-AG to Form 10-Q for the first quarter ended October 31, 2019)***

EX-10.AG 4 exhibit10-agxformofper.htm EXHIBIT 10.AG Exhibit 10-AG 2019 MASTER STOCK INCENTIVE PLAN PERFORMANCE AWARD AGREEMENT This Performance Award Agreement (the “Agreement”) is between Donaldson Company, Inc., a Delaware corporation (“Donaldson” or the “Company”) and the person specified in the individual grant summary, an employee of Donaldson or an Affiliate (the “Employee”) pursuant to the

December 6, 2019 EX-10.AF

Form of Restricted Stock Unit Award Agreement (Cliff Vesting) under the 2019 Master Stock Incentive Plan (Filed as Exhibit 10-AF to Form 10-Q for the first quarter ended October 31, 2019)***

EX-10.AF 3 exhibit10-afxformofres.htm EXHIBIT 10.AF Exhibit 10-AF 2019 MASTER STOCK INCENTIVE PLAN RESTRICTED STOCK UNIT AWARD AGREEMENT This Restricted Stock Unit Award Agreement (the “Agreement”) is made as of the date specified in the individual grant summary, by and between Donaldson Company, Inc., a Delaware corporation (“Donaldson”), and the person specified in the individual grant summary (

December 6, 2019 EX-10.AH

Form of Stock Option Award Agreement under the 2019 Master Stock Incentive Plan (Filed as Exhibit 10-AH to Form 10-Q for the first quarter ended October 31, 2019)***

EX-10.AH 5 exhibit10-ahxformofsto.htm EXHIBIT 10.AH Exhibit 10-AH 2019 MASTER STOCK INCENTIVE PLAN STOCK OPTION AWARD AGREEMENT This Stock Option Award Agreement (the “Agreement”) is made as of the date specified in the individual grant summary, by and between Donaldson Company, Inc., a Delaware corporation (“Donaldson”), and the person specified in the individual grant summary (the “Employee”). F

December 6, 2019 EX-31.B

31-B – Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

December 6, 2019 EX-31.B

31-B – Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

December 6, 2019 S-8

DCI / Donaldson Co., Inc. S-8 - - S-8

As filed with the Securities and Exchange Commission on December 6, 2019. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 41-0222640 (I.R.

December 6, 2019 EX-10.AK

Form of Deferred Compensation and 401(K) Excess Plan (2020 Restatement) (Filed as Exhibit 10-AK to Form 10-Q for the first quarter ended October 31, 2019)***

EX-10.AK 8 exhibit10-akxformofdef.htm EXHIBIT 10.AK Exhibit 10-AK DONALDSON COMPANY, INC. DEFERRED COMPENSATION AND 401(k) EXCESS PLAN (2020 Restatement) As Amended and Restated Effective as of January 1, 2020 DONALDSON COMPANY, INC. DEFERRED COMPENSATION AND 401(k) EXCESS PLAN (2020 Restatement) TABLE OF CONTENTS Page SECTION 1. HISTORY AND PURPOSE.................................................

December 6, 2019 10-Q/A

Quarterly Report -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q/A Amendment No. 1 (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED APRIL 30, 2019 OR o 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

December 6, 2019 EX-31.A

31-A – Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

December 6, 2019 EX-4.C

4-C - First Amendment to Credit Agreement dated October 24, 2019.

EX-4.C 2 exhibit4-cfirstamendme.htm EXHIBIT 4.C Exhibit 4-C FIRST AMENDMENT TO CREDIT AGREEMENT This FIRST AMENDMENT TO CREDIT AGREEMENT (this “Amendment”) is dated as of October 24, 2019, but effective as of July 21, 2017 (the “First Amendment Effective Date”), and is by and among: (a) DONALDSON COMPANY, INC., a Delaware corporation (the “Company”); (b) the Lenders party to the Credit Agreement r

December 6, 2019 10-Q

Quarterly Report - 10-Q

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 OCTOBER 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 1-7891 DONALDSON

December 6, 2019 EX-24.1

Powers of Attorney

EXHIBIT 24.1 DONALDSON COMPANY, INC. POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Tod E. Carpenter, Amy C. Becker and Peter J. Keller, and each of them, the undersigned’s true and lawful attorneys-in-fact and agents, each acting alone, with the powers of substitution and revocation, for the undersigned and in t

December 3, 2019 EX-99.1

Donaldson Company Reports First Quarter 2020 Earnings First quarter 2020 gross margin increased 0.4 percentage points from the prior year Donaldson maintains its prior guidance for fiscal 2020 sales, operating margin and EPS

Exhibit 99.1 Donaldson Company Reports First Quarter 2020 Earnings First quarter 2020 gross margin increased 0.4 percentage points from the prior year Donaldson maintains its prior guidance for fiscal 2020 sales, operating margin and EPS MINNEAPOLIS (December 3, 2019) - Donaldson Company, Inc. (NYSE: DCI) today reported first quarter 2020 net earnings of $65.0 million, or $0.51 per share,1 compare

December 3, 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): December 3, 2019 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Em

November 25, 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): November 22, 2019 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

October 8, 2019 DEFA14A

DCI / Donaldson Co., Inc. DEFA14A - - DEFA14A

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

October 8, 2019 DEF 14A

2019 Master Stock Incentive Plan (Filed as Exhibit A to definitive proxy statement filed on October 8, 2019)***

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

September 27, 2019 EX-24

Powers of Attorney

Exhibit 24 POWER OF ATTORNEY The undersigned does hereby constitute and appoint Amy C.

September 27, 2019 EX-4.A

Description of Registrant’s Securities (Filed as Exhibit 4-A to 2019 Form 10-K Report)

Exhibit 4-A DESCRIPTION OF SECURITIES The summary of the general terms and provisions of the capital stock of Donaldson Company, Inc.

September 27, 2019 10-K

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended July 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: 1-7891 DONALDSON COMPANY, INC. (Exact n

September 27, 2019 EX-10.A

Annual Incentive Plan***

Exhibit 10-A FY Annual Incentive Plan (AIP, SIP, MIP, OAC, DCS) PURPOSE It is Donaldson’s philosophy to provide a total compensation package that attracts, retains and motivates key employees.

September 27, 2019 EX-31.B

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

September 27, 2019 EX-31.A

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

September 27, 2019 EX-21

Wholly Owned Subsidiaries, Joint Ventures and Partnerships

Exhibit 21 Wholly Owned Subsidiaries, Joint Ventures and Partnerships Wholly Owned Subsidiaries Name of Company Where Organized ASHC LLC Minneapolis, MN USA BOFA Americas Inc.

September 5, 2019 EX-99.1

Donaldson Company Reports Fourth Quarter and Full-Year 2019 Earnings Donaldson achieved record sales of $2.85 billion in 2019, an increase of 4.0 percent from 2018 In 2019, Donaldson invested $150 million of capital and returned $229 million to share

EX-99.1 2 a991pr20190731.htm EXHIBIT 99.1 Exhibit 99.1 Donaldson Company Reports Fourth Quarter and Full-Year 2019 Earnings Donaldson achieved record sales of $2.85 billion in 2019, an increase of 4.0 percent from 2018 In 2019, Donaldson invested $150 million of capital and returned $229 million to shareholders Fiscal 2020 sales forecasted between a 2 percent decline and 4 percent increase Operati

September 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): September 5, 2019 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. E

June 12, 2019 11-K

DCI / Donaldson Co., Inc. 11-K - - 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 FORM 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2018 or o TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 1-7891 A. Full title of the plan and t

June 7, 2019 EX-31.A

31-A – Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-A Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tod E.

June 7, 2019 10-Q

DCI / Donaldson Co., Inc. 10-Q - Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED APRIL 30, 2019 OR o 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 1-7891 DONALDSON C

June 7, 2019 EX-31.B

31-B – Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 31-B Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Scott J.

June 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): June 4, 2019 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Employ

June 4, 2019 EX-99.1

Donaldson Company Reports Third Quarter 2019 Earnings Third quarter 2019 sales increased 1.8 percent from 2018, or 5.9 percent in constant currency Third quarter 2019 GAAP EPS increased 9.4% to $0.58 from $0.53 in 2018 Full-year 2019 sales forecast u

Exhibit 99.1 Donaldson Company Reports Third Quarter 2019 Earnings Third quarter 2019 sales increased 1.8 percent from 2018, or 5.9 percent in constant currency Third quarter 2019 GAAP EPS increased 9.4% to $0.58 from $0.53 in 2018 Full-year 2019 sales forecast up 3.5 to 4.5 percent; EPS forecast up 10 to 12 percent1 MINNEAPOLIS (June 4, 2019) - Donaldson Company, Inc. (NYSE: DCI) today reported t

May 8, 2019 SD

DCI / Donaldson Co., Inc. SD FORM SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Donaldson Company, Inc. (Exact name of the registrant as specified in its charter) Delaware 1-7897 41-0222640 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No) 1400 West 94th Street Minneapolis, Minnesota 55431 (Address

May 8, 2019 EX-1.01

Conflict Minerals Report of Donaldson Company, Inc. In accord with Rule 13p-1 under the Securities Exchange Act of 1934 1. Introduction and Summary

Exhibit 1.01 Conflict Minerals Report of Donaldson Company, Inc. In accord with Rule 13p-1 under the Securities Exchange Act of 1934 1. Introduction and Summary This report for the year ended December 31st 2018 is presented to comply with Rule 13p-1 under the Securities Exchange Act of 1934 (the “Rule”). The Rule was adopted by the Securities and Exchange Commission (“SEC”) to implement reporting

April 8, 2019 EX-99.1

Donaldson Company Highlights Strategic Priorities and Announces Fiscal 2021 Financial Targets at Investor Day in New York City

Exhibit 99.1 Donaldson Company Highlights Strategic Priorities and Announces Fiscal 2021 Financial Targets at Investor Day in New York City MINNEAPOLIS (April 9, 2019) - Donaldson Company, Inc. (NYSE: DCI), a leading worldwide manufacturer of filtration products and solutions, today will webcast its Investor Day from the New York Stock Exchange. The event features presentations and question and an

April 8, 2019 8-K

Regulation FD Disclosure, 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): April 9, 2019 DONALDSON COMPANY, INC. (Exact name of registrant as specified in its charter) Delaware 1-7891 41-0222640 (State of Incorporation) (Commission file number) (I.R.S. Emplo

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