David Garfinkle - Insider Trading Tracker

Introduction

This page provides a comprehensive analysis of the known insider trading history of David Garfinkle. Insiders are officers, directors, or significant investors in a company. It is illegal for insiders to make trades in their companies based on specific, non-public information. This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4. Despite these restrictions, academic research suggests that insiders - in general - tend to outperform the market in their own companies.

Average Trade Profitability

Companies with Reported Insider Positions

The SEC filings indicate David Garfinkle has reported holdings or trades in the following companies:

How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by David Garfinkle. Non-planned trade are trades that were not made as part of a 10b5-1 trading plan. The stock performance is charted as cumulative percent change in share price. For example, if an insider trade was made on January 1, 2019, the chart will show the daily percent change of the security to the present day. If the share price were to go from $10 to $15 during this time, the cumulative percent change in share price would be 50%. A change in price from $10 to $20 would be 100%, and a change in price of $10 to $5 would be -50%.

Ultimately, we are trying to determine how closely the insider’s trades correlate to excess returns (positive or negative) in the share price in order to see if the insider is timing their trades to profit from insider information. Consider the situation where an insider was doing this. In this situation, we would expect either (a) positive returns after purchases, or (b) negative returns after sales. In the case of (a), the PURCHASE chart would show a series of upwardly sloping curves, indicating positive returns after each purchase transaction. In the case of (b), the SALE chart would show a series of downward sloping curves, indicating negative returns after each sale transaction.

However, this alone is not enough to draw conclusions. If, for example, the share price of the company was in a non-cyclical climb over many years, then we would expect all the post-purchase plots to be upwardly sloping. Likewise, non-cyclical declines over many years would result in downward sloping post-trade plots. Neither of these charts would suggest insider trading activity.

The strongest indicator would be a situation where the share price was extremely cyclical, and there were both positive signals in the PURCHASE chart and negative plots on the SALE chart. This situation would be highly suggestive of an insider that was timing trades to their financial advantage.

Insider Purchases BEEP / Mobile Infrastructure Corporation - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in BEEP / Mobile Infrastructure Corporation. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date	Ticker	Insider	Reported Shares	Reported Price	Adjusted Shares	Adjusted Price	Cost Basis	Days to Max	Price at Max	Max Profit ($)	Max Return (%)
2025-08-29	BEEP	GARFINKLE DAVID	2,117	3.8300	2,117	3.8300	8,108	6	4.0600	487	6.01
2025-08-29	BEEP	GARFINKLE DAVID	463	3.8500	463	3.8500	1,783
2024-05-28	BEEP	GARFINKLE DAVID	4,100	3.3500	4,100	3.3500	13,735
2024-05-24	BEEP	GARFINKLE DAVID	4,800	3.4000	4,800	3.4000	16,320
2024-05-23	BEEP	GARFINKLE DAVID	5,800	3.4500	5,800	3.4500	20,010

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

Insider Sales BEEP / Mobile Infrastructure Corporation - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in BEEP / Mobile Infrastructure Corporation. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market sales that were not part of an automatic trading plan.

Trade Date	Ticker	Insider	Reported Shares	Reported Price	Adjusted Shares	Adjusted Price	Cost Basis	Days to Min	Price at Min	Max Loss Avoided ($)	Max Loss Avoided (%)
There are no known unplanned open-market trades for this insider and security combination

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

Insider Purchases CXW / CoreCivic, Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in BEEP / Mobile Infrastructure Corporation. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date	Ticker	Insider	Reported Shares	Reported Price	Adjusted Shares	Adjusted Price	Cost Basis	Days to Max	Price at Max	Max Profit ($)	Max Return (%)
There are no known unplanned open-market trades for this insider and security combination

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

Insider Sales CXW / CoreCivic, Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in BEEP / Mobile Infrastructure Corporation. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market sales that were not part of an automatic trading plan.

Trade Date	Ticker	Insider	Reported Shares	Reported Price	Adjusted Shares	Adjusted Price	Cost Basis	Days to Min	Price at Min	Max Loss Avoided ($)	Max Loss Avoided (%)
2025-05-21	CXW	GARFINKLE DAVID	900	0.0000	900	0.0000	0	77	19.6000	17,640
2024-11-11	CXW	GARFINKLE DAVID	50,000	24.2000	50,000	24.2000	1,210,000
2024-08-23	CXW	GARFINKLE DAVID	25,000	13.6000	25,000	13.6000	340,000
2024-05-21	CXW	GARFINKLE DAVID	10,100	15.3300	10,100	15.3300	154,833
2024-05-20	CXW	GARFINKLE DAVID	19,900	15.1800	19,900	15.1800	302,082
2018-11-29	CXW	GARFINKLE DAVID	5,010	21.6968	5,010	21.6968	108,701
2018-07-30	CXW	GARFINKLE DAVID	5,010	25.3100	5,010	25.3100	126,803
2017-10-16	CXW	GARFINKLE DAVID	10,000	26.0093	10,000	26.0093	260,093
2017-09-15	CXW	GARFINKLE DAVID	10,000	25.9047	10,000	25.9047	259,047
2017-04-17	CXW	GARFINKLE DAVID	10,000	33.2176	10,000	33.2176	332,176
2017-02-10	CXW	GARFINKLE DAVID	13,409	30.5601	13,409	30.5601	409,780
2014-03-04	CXW	GARFINKLE DAVID	24,568	33.6780	24,568	33.6780	827,401
2013-02-26	CXW	GARFINKLE DAVID	733	37.7480	733	37.7480	27,669
2013-02-26	CXW	GARFINKLE DAVID	11,250	37.9250	11,250	37.9250	426,656
2013-02-26	CXW	GARFINKLE DAVID	11,250	37.9250	11,250	37.9250	426,656
2013-02-26	CXW	GARFINKLE DAVID	11,250	37.9250	11,250	37.9250	426,656
2013-02-25	CXW	GARFINKLE DAVID	12,467	37.8529	12,467	37.8529	471,912
2012-03-15	CXW	GARFINKLE DAVID	30,000	26.0093	30,000	26.0093	780,279

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

Insider Trading History

This table shows the complete list of insider trades made by David Garfinkle as disclosed to the Securities Exchange Commission (SEC).