Week of Sep 28 – Oct 2, 2026
By Trabud · Insider-trading data from SEC EDGAR
Published:
The summary paragraph is drafted by an AI model from the week's ranked filings and published automatically; every figure in the tables comes directly from SEC Form 4 filings. How this page is built. Not investment advice.
Insider activity this week was dominated by a handful of outsized transactions, led by Director Milton C. Ault III's $92.4 million purchase of UUU (Universal Safety Products) and Conifer Management's $66.3 million buy of GPI (Group 1 Automotive), while Baker Bros. Advisors made two separate purchases in KOD (Kodiak Sciences) totaling roughly $122 million and Berkshire Hathaway added $53.9 million of LEN (Lennar). On the sell side, Gitlab Director Sytse Sijbrandij offloaded $101.1 million of GTLB, Apax-affiliated entities and TCO Group Holdings each sold $92.5 million of INNV (InnovAge), and KE Holdings CEO Yongdong Peng and Cerebras COO Dhiraj Mallick disposed of $84.6 million and $80.8 million respectively. The buying clustered in healthcare and consumer/industrial names, with the Baker Bros. double-down in KOD signaling conviction in the biotech, while the heavy INNV and BEKE sales point to significant shareholder exits.
- Total bought
- $483.0M
- 10 filings
- Total sold
- $650.1M
- 10 filings
- Companies
- 15
- tracked this week
- Net flow
- −$167.1M
- net selling
Top insider buys
| # | Company | Insider | Shares | Value |
|---|---|---|---|---|
| 1 | UUUUNIVERSAL SAFETY PRODUCTS, INC. | AULT MILTON C IIIDirector | 18.0K | $92.4M |
| 2 | GPI◇2GROUP 1 AUTOMOTIVE INC | Conifer Management, L.L.C.Other | 273.7K | $66.3M |
| 3 | KOD◇3Kodiak Sciences Inc. | Felix BakerDirector | 715.6K | $63.4M |
| 4 | KOD◇3Kodiak Sciences Inc. | Felix BakerDirector | 807.8K | $58.6M |
| 5 | LENLENNAR CORP /NEW/ | BERKSHIRE HATHAWAY INCOther | 660.4K | $53.9M |
| 6 | KOD◇3Kodiak Sciences Inc. | Felix BakerDirector | 418.3K | $35.0M |
| 7 | GPI◇2GROUP 1 AUTOMOTIVE INC | Conifer Management, L.L.C.Other | 126.3K | $31.5M |
| 8 | CRBDCorebridge Financial, Inc. | NIPPON LIFE INSURANCE COOther | 805.8K | $27.5M |
| 9 | ADRX◇2ADARx Pharmaceuticals, Inc. | SR ONE CAPITAL MANAGEMENT, LLCOther | 1.6M | $27.2M |
| 10 | ADRX◇2ADARx Pharmaceuticals, Inc. | Simeon GeorgeDirector | 1.6M | $27.2M |
Top insider sells
| # | Company | Insider | Shares | Value |
|---|---|---|---|---|
| 1 | GTLBGitlab Inc. | Sytse SijbrandijDirector | 2.1M | $101.1M |
| 2 | INNV◇2InnovAge Holding Corp. | IGNITE AGGREGATOR LPOther | 10.0M | $92.5M |
| 3 | INNV◇2InnovAge Holding Corp. | TCO GROUP HOLDINGS, L.P.Other | 10.0M | $92.5M |
| 4 | BEKEKE Holdings Inc. | Yongdong PengCEO | 16.0M | $84.6M |
| 5 | CBRSCerebras Systems Inc. | Dhiraj MallickCOO | 396.0K | $80.8M |
| 6 | CRWDCrowdStrike Holdings, Inc. | Michael SentonasPresident | 241.9K | $64.2M |
| 7 | MPWRMONOLITHIC POWER SYSTEMS, INC. | Michael HsingCEO | 30.0K | $40.3M |
| 8 | ACTEnact Holdings, Inc. | Genworth Holdings, Inc.Other | 762.9K | $37.1M |
| 9 | MEDPMedpace Holdings, Inc. | August J. TroendleCEO | 48.7K | $30.3M |
| 10 | CRWVCoreWeave, Inc. | Michael N IntratorCEO | 307.7K | $26.7M |
Quick Answer
What were the biggest insider trades the week of Sep 28 – Oct 2, 2026?
For the week of Sep 28 – Oct 2, 2026, the biggest buy was $92.4M of UUU by AULT MILTON C III; the biggest sale was $101.1M of GTLB by Sytse Sijbrandij.
Source: SEC EDGAR Form 4
Frequently Asked Questions
Which insider bought the most the week of Sep 28 – Oct 2, 2026?
AULT MILTON C III (Director) bought $92.4M of UNIVERSAL SAFETY PRODUCTS, INC. (UUU) — the largest insider purchase of the week by dollar value.
Which insider sold the most the week of Sep 28 – Oct 2, 2026?
Sytse Sijbrandij (Director) sold $101.1M of Gitlab Inc. (GTLB) — the largest insider sale of the week by dollar value.
How are these insider trades ranked?
Trabud ranks each week's SEC Form 4 filings by total transaction dollar value, surfacing the largest open-market insider buys and sells. All data comes directly from official SEC EDGAR filings.
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