Matthijs Glastra - Insider Trading Tracker

Introduction

This page provides a comprehensive analysis of the known insider trading history of Matthijs Glastra. 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 Matthijs Glastra 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 Matthijs Glastra. 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 GSIG / Goldman Sachs ETF Trust - Goldman Sachs Access Investment Grade Corporate 1-5 Year Bond ETF - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in GSIG / Goldman Sachs ETF Trust - Goldman Sachs Access Investment Grade Corporate 1-5 Year Bond ETF. 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 GSIG / Goldman Sachs ETF Trust - Goldman Sachs Access Investment Grade Corporate 1-5 Year Bond ETF - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in GSIG / Goldman Sachs ETF Trust - Goldman Sachs Access Investment Grade Corporate 1-5 Year Bond ETF. 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 (%)
2024-11-11	NOVT	Glastra Matthijs	3,507	178.3600	3,507	178.3600	625,509	148	102.6500	-265,514	-42.45
2024-11-11	NOVT	Glastra Matthijs	997	179.3000	997	179.3000	178,762
2024-11-11	NOVT	Glastra Matthijs	1,793	180.4800	1,793	180.4800	323,601
2024-11-11	NOVT	Glastra Matthijs	303	181.7500	303	181.7500	55,070
2024-11-11	NOVT	Glastra Matthijs	900	183.1600	900	183.1600	164,844
2020-03-02	NOVT	Glastra Matthijs	2,500	89.2500	2,500	89.2500	223,125
2015-11-19	GSIG	Glastra Matthijs	3,795	14.0000	3,795	14.0000	53,130
2015-11-18	GSIG	Glastra Matthijs	505	14.0000	505	14.0000	7,070
2015-11-11	GSIG	Glastra Matthijs	700	14.0000	700	14.0000	9,800

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 Matthijs Glastra as disclosed to the Securities Exchange Commission (SEC).