Insider trading recap: September 3, 2026
On September 3, 2026, insiders filed 54 open-market purchases worth $295.9M across 48 companies, and 328 sales worth $493.9M, on SEC Form 4. The largest purchase was Cascade Investment, L.L.C. (10% Owner) buying $119.1M of REPUBLIC SERVICES, INC. (RSG) at an average $223.04 a share. The largest sale was Alba Manuel (Director) selling $51.3M of Astera Labs, Inc. (ALAB) under a 10b5-1 plan. 3 companies had several insiders buying on the same day: Sixth Street Lending Partners, UMB FINANCIAL CORP (UMBF), Primis Financial Corp. (FRST).
Biggest insider buys filed September 3, 2026
Open-market purchases, one row per Form 4, largest first.
| Company | Insider | Value | Shares | Avg price | Traded |
|---|---|---|---|---|---|
| RSG REPUBLIC SERVICES, INC. | Cascade Investment, L.L.C. 10% Owner | $119.1M | 534,000 | $223.04 | Sep 1, 2026 |
| PBLSX AMG Pantheon Infrastructure Fund, LLC | BlueArc Capital Management, LLC 10% Owner | $99.4M | 8,671,826 | $11.46 | Sep 1, 2026 |
| — Sixth Street Lending Partners | Waxman Alan Vice President | $47.8M | 1,661,507 | $28.78 | Sep 1, 2026 |
| GPI GROUP 1 AUTOMOTIVE INC | Conifer Management, L.L.C. 10% Owner | $8.3M | 30,100 | $275.28 | Sep 1, 2026 |
| AON Aon plc | Knight Lester B Director | $6.5M | 20,000 | $327.48 | Sep 2, 2026 |
| N Crescent Private Credit Income Corp | BlueArc Capital Management, LLC 10% Owner | $5.5M | 208,280 | $26.33 | Sep 1, 2026 |
| — Privacore VPC Asset Backed Credit Fund | Corbin Capital Partners, L.P. 10% Owner | $2.5M | 246,305 | $10.15 | Sep 1, 2026 |
| AMRZ Amrize Ltd | Jenisch Jan Philipp Chairman & CEO, Director | $1.3M | 30,000 | $42.47 | Sep 2, 2026 |
| VSTS Vestis Corp | Barber James J. President & CEO, Director | $1.0M | 84,500 | $12.37 | Sep 2, 2026 |
| DFIN Donnelley Financial Solutions, Inc. | Binz Joseph Leo Director | $1000K | 20,780 | $48.12 | Sep 1, 2026 |
| HONA Honeywell Aerospace Inc. | Arnold Craig Director | $998K | 6,400 | $156.00 | Sep 1, 2026 |
| BETA BETA Technologies, Inc. | Stone Michael Robert Director | $503K | 25,945 | $19.38 | Sep 1, 2026 |
| EQPT EquipmentShare.com Inc | Schlacks Jabbok Founder & CEO, Director, Member of 10% owner group | $432K | 25,000 | $17.29 | Sep 1, 2026 |
| PRTA PROTHENA CORP PUBLIC LTD CO | Scully William P 10% Owner | $256K | 27,000 | $9.47 | Sep 2, 2026 |
| SLGL Sol-Gel Technologies Ltd. | Opaleye Management Inc. 10% Owner | $116K | 1,683 | $69.21 | Sep 1, 2026 |
Several insiders buying the same stock
Companies where two or more insiders filed purchases this day. All cluster buys.
Biggest insider sales filed September 3, 2026
Selling has many routine reasons (taxes, diversification, planned 10b5-1 sales), so read these as context.
| Company | Insider | Value | Shares | Avg price | Traded |
|---|---|---|---|---|---|
| ALAB Astera Labs, Inc. | Alba Manuel Director · 10b5-1 | $51.3M | 183,000 | $280.13 | Sep 1, 2026 |
| POST Post Holdings, Inc. | Stiritz William P Chairman Emeritus | $32.3M | 384,132 | $84.06 | Sep 1, 2026 |
| CRWV CoreWeave, Inc. | Intrator Michael N CEO and President, Director, 10% Owner · 10b5-1 | $25.1M | 307,692 | $81.66 | Sep 1, 2026 |
| STX Seagate Technology Holdings plc | Mosley William D CEO, Director · 10b5-1 | $24.5M | 30,000 | $816.28 | Sep 1, 2026 |
| LAUR LAUREATE EDUCATION, INC. | Snow Ian Kendell Director, 10% Owner | $19.1M | 521,229 | $36.65 | Aug 31, 2026 |
| WDAY Workday, Inc. | Duffield David A 10% Owner · 10b5-1 | $18.9M | 94,961 | $199.29 | Sep 1, 2026 |
| LRCX LAM RESEARCH CORP | Varadarajan Seshasayee Senior Vice President · 10b5-1 | $17.4M | 59,750 | $291.32 | Sep 2, 2026 |
| CRWV CoreWeave, Inc. | McVeety Kristen J GC and Secretary · 10b5-1 | $12.7M | 156,000 | $81.63 | Sep 1, 2026 |
| DDOG Datadog, Inc. | Le-Quoc Alexis Chief Technology Officer, Director · 10b5-1 | $12.2M | 53,912 | $227.02 | Sep 1, 2026 |
| FROG JFrog Ltd | Simon Frederic Director · 10b5-1 | $11.2M | 120,000 | $93.21 | Sep 1, 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.