Insider trading recap: October 26, 2026
On October 26, 2026, insiders filed 37 open-market purchases worth $42.0M across 33 companies, and 56 sales worth $70.5M, on SEC Form 4. The largest purchase was Conifer Management, L.L.C. (10% Owner) buying $24.2M of GROUP 1 AUTOMOTIVE INC (GPI) at an average $242.32 a share. The largest sale was Guthart Gary S (Director) selling $9.1M of INTUITIVE SURGICAL INC (ISRG) under a 10b5-1 plan. 3 companies had several insiders buying on the same day: Gentherm Inc (THRM), STEWART INFORMATION SERVICES CORP (STC), U S GLOBAL INVESTORS INC (GROW).
The write-up, company by company: insider buying on October 26, 2026 · insider selling on October 26, 2026.
Biggest insider buys filed October 26, 2026
Open-market purchases, one row per Form 4, largest first.
| Company | Insider | Value | Shares | Avg price | Traded |
|---|---|---|---|---|---|
| GPI GROUP 1 AUTOMOTIVE INC | Conifer Management, L.L.C. 10% Owner | $24.2M | 100,000 | $242.32 | Oct 22, 2026 |
| CRBG Corebridge Financial, Inc. | Nippon Life Insurance Co 10% Owner · 10b5-1 | $8.7M | 246,440 | $35.15 | Oct 22, 2026 |
| BPRE Bluerock Private Real Estate Fund | Kamfar Ramin Director | $2.1M | 170,320 | $12.48 | Oct 22, 2026 |
| PRTA PROTHENA CORP PUBLIC LTD CO | Scully William P 10% Owner | $1.2M | 150,000 | $8.15 | Oct 22, 2026 |
| OPTU Optimum Communications, Inc. | Subin Neil S 10% Owner | $1.2M | 2,228,007 | $0.52 | Oct 22, 2026 |
| KRRO Korro Bio, Inc. | Lynx1 Capital Management LP 10% Owner | $885K | 79,809 | $11.09 | Oct 22, 2026 |
| — Blackstone Multi-Strategy Hedge Fund L.P. | Abrahams Riad M Chief Executive Officer, Director | $795K | 31,213 | $25.47 | Oct 22, 2026 |
| THRM Gentherm Inc | Mascarenas Paul Anthony Director | $533K | 20,000 | $26.63 | Oct 23, 2026 |
| CITR CitroTech Inc. | Huff Craig A Director, 10% Owner | $500K | 200,000 | $2.50 | Oct 22, 2026 |
| LEO BNY MELLON STRATEGIC MUNICIPALS, INC. | Saba Capital Management, L.P. 10% Owner | $369K | 65,000 | $5.68 | Oct 23, 2026 |
| ACOG Alpha Cognition Inc. | Opaleye Management Inc. 10% Owner | $266K | 32,090 | $8.28 | Oct 22, 2026 |
| GRCE Grace Therapeutics, Inc. | Opaleye Management Inc. 10% Owner | $159K | 87,801 | $1.81 | Oct 22, 2026 |
| THRM Gentherm Inc | Presley William T. President & CEO, Director | $130K | 5,000 | $26.00 | Oct 23, 2026 |
| NBIS Nebius Group N.V. | Grimme Arne Director · 10b5-1 | $122K | 770 | $159.01 | Oct 22, 2026 |
| OIG Orion180 Insurance Group Inc. | Darling Craig 10% Owner | $116K | 10,990 | $10.54 | Sep 18, 2026 |
Several insiders buying the same stock
Companies where two or more insiders filed purchases this day. All cluster buys.
Biggest insider sales filed October 26, 2026
Selling has many routine reasons (taxes, diversification, planned 10b5-1 sales), so read these as context.
| Company | Insider | Value | Shares | Avg price | Traded |
|---|---|---|---|---|---|
| ISRG INTUITIVE SURGICAL INC | Guthart Gary S Director · 10b5-1 | $9.1M | 20,095 | $451.61 | Oct 23, 2026 |
| CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC. | Foster James C Director · 10b5-1 | $8.4M | 24,042 | $350.00 | Oct 22, 2026 |
| LRCX LAM RESEARCH CORP | Archer Timothy President and CEO · 10b5-1 | $7.1M | 31,400 | $227.02 | Oct 23, 2026 |
| PG PROCTER & GAMBLE Co | Jejurikar Shailesh Chairman, President and CEO, Director | $5.7M | 35,000 | $163.09 | Oct 23, 2026 |
| UTHR UNITED THERAPEUTICS Corp | Rothblatt Martine A Chairperson & CEO, Director · 10b5-1 | $5.5M | 9,500 | $582.76 | Oct 23, 2026 |
| PACS PACS Group, Inc. | Murray Jason Hulse Co-Founder, CEO & Chairman, Director, 10% Owner · 10b5-1 | $4.0M | 82,613 | $48.42 | Oct 22, 2026 |
| PCTY Paylocity Holding Corp | Sarowitz Steven I Director, 10% Owner · 10b5-1 | $3.7M | 20,926 | $176.76 | Oct 22, 2026 |
| HSY HERSHEY CO | Hershey Trust Co Trustee In Trust For Milton Hershey School 10% Owner · 10b5-1 | $3.4M | 20,000 | $172.46 | Oct 22, 2026 |
| CART Maplebear Inc. | Reuter Emily CHIEF FINANCIAL OFFICER · 10b5-1 | $2.8M | 50,000 | $55.00 | Oct 23, 2026 |
| GL GLOBE LIFE INC. | Majors Michael Clay EVP - Chief Strategy Officer | $2.2M | 14,377 | $154.48 | Oct 23, 2026 |
Grouped by the day the Form 4 reached SEC EDGAR. Values are shares times the reported price; a price far from the market close is treated as a typo and left out. Not investment advice.