Biggest insider sales, week of Sep 28–Oct 4, 2026: Cerebras Systems (CBRS) tops the list at $112.8M
Insiders reported 1,157 sales of common stock across 250 companies in SEC Form 4 filings. These are the five U.S. companies with the most insider selling by dollar value; 75% of that value was sold under pre-arranged 10b5-1 trading plans.
Industry: Semiconductors & Related Devices. SEC ↗
4 insiders sold 549,820 shares in 45 transactions at an average of $205.08 a share, including the CEO or CFO. All of it was sold under pre-arranged 10b5-1 trading plans.
- Mallick Dhiraj, Chief Operating Officer: sold 68,830 shares at $194.91 ($13.42M) on Sep 29, 2026 under a 10b5-1 plan. Filed Sep 30, 2026. View Form 4 on SEC.gov ↗
- Mallick Dhiraj, Chief Operating Officer: sold 46,427 shares at $210.27 ($9.76M) on Sep 29, 2026 under a 10b5-1 plan. Filed Sep 30, 2026. View Form 4 on SEC.gov ↗
- Mallick Dhiraj, Chief Operating Officer: sold 41,391 shares at $211.29 ($8.75M) on Sep 29, 2026 under a 10b5-1 plan. Filed Sep 30, 2026. View Form 4 on SEC.gov ↗
All insider trades in CBRS →42 smaller transactions not listedGitLab is a software forge primarily developed by GitLab Inc. It is available as either a free software "Community" edition or a proprietary software "Enterprise" edition. Wikipedia (CC BY-SA 4.0) ↗
2 insiders sold 2,168,115 shares in 10 transactions at an average of $47.72 a share. All of it was sold under pre-arranged 10b5-1 trading plans.
- Sijbrandij Sytse, Director: sold 842,084 shares at $48.55 ($40.88M) on Sep 24, 2026 under a 10b5-1 plan. Filed Sep 28, 2026. View Form 4 on SEC.gov ↗
- Sijbrandij Sytse, Director: sold 424,369 shares at $48.08 ($20.4M) on Sep 25, 2026 under a 10b5-1 plan. Filed Sep 28, 2026. View Form 4 on SEC.gov ↗
- Sijbrandij Sytse, Director: sold 295,460 shares at $46.08 ($13.61M) on Sep 28, 2026 under a 10b5-1 plan. Filed Sep 28, 2026. View Form 4 on SEC.gov ↗
All insider trades in GTLB →7 smaller transactions not listedIndustry: Services-Health Services. SEC ↗
2 insiders sold 10,023,814 shares in 2 transactions at an average of $9.25 a share. 0% of it was sold under pre-arranged 10b5-1 trading plans.
- IGNITE AGGREGATOR LP; APAX X (GUERNSEY) USD AIV LP; IGNITE GP INC.; Apax X EUR L.P.; Apax X USD L.P.; Apax X GP Co. Ltd, 10% owner: sold 10,000,000 shares at $9.25 ($92.5M) on Sep 24, 2026. Filed Sep 28, 2026. View Form 4 on SEC.gov ↗
- DAMATO NICOLE, CHIEF LEGAL OFFICER: sold 23,814 shares at $8.70 ($207.18K) on Sep 25, 2026 under a 10b5-1 plan. Filed Sep 29, 2026. View Form 4 on SEC.gov ↗
CrowdStrike Holdings, Inc. is an American cybersecurity technology company based in Austin, Texas. Wikipedia (CC BY-SA 4.0) ↗
2 insiders sold 301,944 shares in 53 transactions at an average of $264.49 a share, including the CEO or CFO. All of it was sold under pre-arranged 10b5-1 trading plans.
- Sentonas Michael, PRESIDENT: sold 61,611 shares at $266.53 ($16.42M) on Sep 30, 2026 under a 10b5-1 plan. Filed Oct 2, 2026. View Form 4 on SEC.gov ↗
- Sentonas Michael, PRESIDENT: sold 53,539 shares at $265.39 ($14.21M) on Sep 30, 2026 under a 10b5-1 plan. Filed Oct 2, 2026. View Form 4 on SEC.gov ↗
- Sentonas Michael, PRESIDENT: sold 41,974 shares at $267.29 ($11.22M) on Sep 30, 2026 under a 10b5-1 plan. Filed Oct 2, 2026. View Form 4 on SEC.gov ↗
All insider trades in CRWD →50 smaller transactions not listedIndustry: Services-Prepackaged Software. SEC ↗
8 insiders sold 508,415 shares in 20 transactions at an average of $87.06 a share, including the CEO or CFO. 60% of it was sold under pre-arranged 10b5-1 trading plans.
- Intrator Michael N, CEO and President: sold 89,338 shares at $85.86 ($7.67M) on Sep 29, 2026 under a 10b5-1 plan. Filed Oct 1, 2026. View Form 4 on SEC.gov ↗
- Intrator Michael N, CEO and President: sold 78,552 shares at $87.69 ($6.89M) on Sep 30, 2026. Filed Oct 2, 2026. View Form 4 on SEC.gov ↗
- Intrator Michael N, CEO and President: sold 74,072 shares at $86.57 ($6.41M) on Sep 29, 2026 under a 10b5-1 plan. Filed Oct 1, 2026. View Form 4 on SEC.gov ↗
All insider trades in CRWV →17 smaller transactions not listed
How this report is made
This report is compiled automatically from SEC Form 4 filings received during the week shown. Companies are ranked by the total dollar value of insider sales (transaction code S, open-market or private sale). “Insiders” include officers, directors and owners of more than 10% of a company, which can be investment funds. Only common stock is counted: preferred shares, units and derivatives are left out, as are filings that fail our data checks. When a fund and the insider who controls it both report the same trade, it is counted once. Only U.S.-based companies are ranked, because insiders of foreign companies sometimes report prices in their local currency.
Every figure comes from the original filing, which is linked in each entry; the filing is the authoritative record. This is information, not investment advice. See the methodology, disclaimer and corrections policy.