James Bubeck - Insider Trading Tracker

Introduction

This page provides a comprehensive analysis of the known insider trading history of James Bubeck. 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 James Bubeck 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 James Bubeck. 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 CCOI / Cogent Communications Holdings, Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in CCOI / Cogent Communications Holdings, 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 CCOI / Cogent Communications Holdings, Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in CCOI / Cogent Communications Holdings, 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 (%)
2025-06-04	CCOI	BUBECK JAMES	2,000	47.4996	2,000	47.4996	94,999	65	30.6200	-33,759	-35.54
2025-03-04	CCOI	BUBECK JAMES	2,000	71.6741	2,000	71.6741	143,348
2024-12-09	CCOI	BUBECK JAMES	1,920	76.5966	1,920	76.5966	147,065
2024-12-02	CCOI	BUBECK JAMES	1,920	81.4213	1,920	81.4213	156,329
2023-12-05	CCOI	BUBECK JAMES	1,920	66.1236	1,920	66.1236	126,957
2023-12-01	CCOI	BUBECK JAMES	1,920	63.6963	1,920	63.6963	122,297
2022-12-05	CCOI	BUBECK JAMES	1,920	57.4497	1,920	57.4497	110,303
2021-12-14	CCOI	BUBECK JAMES	1,920	76.7700	1,920	76.7700	147,398
2021-05-19	CCOI	BUBECK JAMES	5,000	74.6612	5,000	74.6612	373,306
2021-03-10	CCOI	BUBECK JAMES	1,920	60.4324	1,920	60.4324	116,030
2020-12-01	CCOI	BUBECK JAMES	3,840	57.9400	3,840	57.9400	222,490
2018-05-11	CCOI	BUBECK JAMES	2,000	50.3620	2,000	50.3620	100,724
2018-03-02	CCOI	BUBECK JAMES	300	43.0050	300	43.0050	12,902
2017-12-01	CCOI	BUBECK JAMES	250	46.6550	250	46.6550	11,664
2017-08-11	CCOI	BUBECK JAMES	500	43.5624	500	43.5624	21,781
2017-06-01	CCOI	BUBECK JAMES	300	39.8745	300	39.8745	11,962
2017-03-17	CCOI	BUBECK JAMES	100	41.8753	100	41.8753	4,188
2017-03-01	CCOI	BUBECK JAMES	300	41.6250	300	41.6250	12,488
2016-11-09	CCOI	BUBECK JAMES	800	39.7600	800	39.7600	31,808
2016-08-25	CCOI	BUBECK JAMES	233	36.2553	233	36.2553	8,447

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 James Bubeck as disclosed to the Securities Exchange Commission (SEC).