Klein Matthew B. - Insider Trading Tracker

Introduction

This page provides a comprehensive analysis of the known insider trading history of Klein Matthew B.. 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 Klein Matthew B. 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 Klein Matthew B.. 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 CLPT / ClearPoint Neuro, Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in CLPT / ClearPoint Neuro, Inc.. 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 CLPT / ClearPoint Neuro, Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in CLPT / ClearPoint Neuro, Inc.. 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 PTCT / PTC Therapeutics, Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in CLPT / ClearPoint Neuro, Inc.. 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 PTCT / PTC Therapeutics, Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in CLPT / ClearPoint Neuro, Inc.. 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 (%)
2025-08-05	PTCT	Klein Matthew B.	10,739	51.7400	10,739	51.7400	555,636	6	43.3000	-90,636	-16.31
2025-04-22	PTCT	Klein Matthew B.	2,804	48.7360	2,804	48.7360	136,656
2025-02-20	PTCT	Klein Matthew B.	3,895	50.1240	3,895	50.1240	195,233
2025-02-19	PTCT	Klein Matthew B.	3,897	50.0960	3,897	50.0960	195,224
2025-01-08	PTCT	Klein Matthew B.	2,402	44.5000	2,402	44.5000	106,889
2025-01-07	PTCT	Klein Matthew B.	2,142	45.3400	2,142	45.3400	97,118
2024-12-31	PTCT	Klein Matthew B.	8,279	45.1600	8,279	45.1600	373,880
2024-04-19	PTCT	Klein Matthew B.	3,361	24.8940	3,361	24.8940	83,669
2024-04-17	PTCT	Klein Matthew B.	1,307	25.1350	1,307	25.1350	32,851
2024-01-09	PTCT	Klein Matthew B.	5,443	29.0148	5,443	29.0148	157,928
2024-01-08	PTCT	Klein Matthew B.	2,237	28.6403	2,237	28.6403	64,068
2024-01-05	PTCT	Klein Matthew B.	10,107	27.1488	10,107	27.1488	274,393
2023-04-18	PTCT	Klein Matthew B.	1,211	52.0437	1,211	52.0437	63,025
2023-01-11	PTCT	Klein Matthew B.	2,244	44.3596	2,244	44.3596	99,543
2023-01-10	PTCT	Klein Matthew B.	2,273	42.9329	2,273	42.9329	97,586
2023-01-09	PTCT	Klein Matthew B.	731	41.6562	731	41.6562	30,451
2022-04-19	PTCT	Klein Matthew B.	897	42.5150	897	42.5150	38,136
2022-01-07	PTCT	Klein Matthew B.	775	38.5250	775	38.5250	29,857
2021-04-19	PTCT	Klein Matthew B.	859	48.1680	859	48.1680	41,376

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 Klein Matthew B. as disclosed to the Securities Exchange Commission (SEC).