The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 30, 2026 | Golden Russell G. | Director | Grant(A) | 140 | $330.12 | $46K |
| Jun 30, 2026 | Robinson Elizabeth | Director | Grant(A) | 133 | $330.12 | $44K |
| May 26, 2026 | Klein Michael Frederick | EVP & President, Personal Ins. | Option exercise(M) | 10K | — | $0 |
| May 26, 2026 | Klein Michael Frederick | EVP & President, Personal Ins. | Sell(S) | 2K | $308.79 | $469K |
| May 26, 2026 | Klein Michael Frederick | EVP & President, Personal Ins. | Sell(S) | 2K | $308.33 | $744K |
| May 26, 2026 | Klein Michael Frederick | EVP & President, Personal Ins. | Sell(S) | 6K | $307.10 | $1.9M |
| May 26, 2026 | Klein Michael Frederick | EVP & President, Personal Ins. | Option exercise(M) | 10K | $132.58 | $1.3M |
| May 22, 2026 | Bessette Andy F | EVP and Chief Admin Officer | Option exercise(M) | 4K | — | $0 |
| May 22, 2026 | Bessette Andy F | EVP and Chief Admin Officer | Sell(S) | 4K | $308.11 | $1.3M |
| May 22, 2026 | Bessette Andy F | EVP and Chief Admin Officer | Option exercise(M) | 4K | $189.01 | $804K |
| Apr 30, 2026 | Kess Avrohom J. | Vice Chmn. & Chief Legal Off. | Gift(G) | 1K | — | $0 |
| Apr 28, 2026 | Kess Avrohom J. | Vice Chmn. & Chief Legal Off. | Option exercise(M) | 28K | — | $0 |
| Apr 28, 2026 | Kess Avrohom J. | Vice Chmn. & Chief Legal Off. | Sell(S) | 7K | $308.78 | $2.1M |
| Apr 28, 2026 | Kess Avrohom J. | Vice Chmn. & Chief Legal Off. | Tax withholding(F) | 21K | $309.03 | $6.5M |
| Apr 28, 2026 | Kess Avrohom J. | Vice Chmn. & Chief Legal Off. | Option exercise(M) | 28K | $140.85 | $3.9M |
| Apr 28, 2026 | Heyman William H | Vice Chairman | Option exercise(M) | 2K | — | $0 |
| Apr 28, 2026 | Heyman William H | Vice Chairman | Sell(S) | 1K | $311.00 | $311K |
| Apr 28, 2026 | Heyman William H | Vice Chairman | Sell(S) | 557 | $310.00 | $173K |
| Apr 28, 2026 | Heyman William H | Vice Chairman | Option exercise(M) | 2K | $189.01 | $294K |
| Apr 23, 2026 | Thomsen Laurie J | Director | Gift(G) | 631 | — | $0 |
| Apr 20, 2026 | Kurtzman Diane | EVP & Chief HR Officer | Option exercise(M) | 1K | — | $0 |
| Apr 20, 2026 | Kurtzman Diane | EVP & Chief HR Officer | Sell(S) | 1K | $303.42 | $421K |
| Apr 20, 2026 | Kurtzman Diane | EVP & Chief HR Officer | Option exercise(M) | 1K | $132.58 | $184K |
| Apr 20, 2026 | Kurtzman Diane | EVP & Chief HR Officer | Sell(S) | 1K | $303.47 | $449K |
| Apr 20, 2026 | Klenk Jeffrey P. | EVP & Pres., Bond & Spec. Ins. | Sell(S) | 6K | $305.06 | $2.0M |
| Apr 20, 2026 | Klein Michael Frederick | EVP & President, Personal Ins. | Option exercise(M) | 10K | — | $0 |
| Apr 20, 2026 | Klein Michael Frederick | EVP & President, Personal Ins. | Sell(S) | 3K | $304.38 | $995K |
| Apr 20, 2026 | Klein Michael Frederick | EVP & President, Personal Ins. | Sell(S) | 7K | $303.47 | $2.0M |
| Apr 20, 2026 | Klein Michael Frederick | EVP & President, Personal Ins. | Option exercise(M) | 10K | $132.58 | $1.3M |
| Apr 20, 2026 | Kess Avrohom J. | Vice Chmn. & Chief Legal Off. | Gift(G) | 2K | — | $0 |
| Mar 31, 2026 | Golden Russell G. | Director | Grant(A) | 159 | $291.68 | $46K |
| Mar 31, 2026 | Robinson Elizabeth | Director | Grant(A) | 150 | $291.68 | $44K |
| Feb 26, 2026 | Olivo Maria | EVP, ERM & Chief Risk Officer | Option exercise(M) | 10K | $118.78 | $1.2M |
| Feb 26, 2026 | Olivo Maria | EVP, ERM & Chief Risk Officer | Sell(S) | 10K | $306.60 | $3.2M |
| Feb 26, 2026 | Olivo Maria | EVP, ERM & Chief Risk Officer | Option exercise(M) | 10K | — | $0 |
| Feb 26, 2026 | Rowland David Donnay | EVP & Co-Chief Invest. Officer | Option exercise(M) | 5K | $126.18 | $597K |
| Feb 26, 2026 | Rowland David Donnay | EVP & Co-Chief Invest. Officer | Sell(S) | 5K | $308.52 | $1.5M |
| Feb 26, 2026 | Rowland David Donnay | EVP & Co-Chief Invest. Officer | Option exercise(M) | 5K | — | $0 |
| Feb 25, 2026 | Munson Paul E. | SVP & Corp. Controller | Option exercise(M) | 3K | $126.18 | $353K |
| Feb 25, 2026 | Munson Paul E. | SVP & Corp. Controller | Sell(S) | 3K | $306.04 | $857K |
| Feb 25, 2026 | Munson Paul E. | SVP & Corp. Controller | Sell(S) | 927 | $306.04 | $284K |
| Feb 25, 2026 | Munson Paul E. | SVP & Corp. Controller | Option exercise(M) | 3K | — | $0 |
| Feb 23, 2026 | Heyman William H | Vice Chairman | Sell(S) | 1K | $305.00 | $305K |
| Feb 23, 2026 | Heyman William H | Vice Chairman | Sell(S) | 2K | $307.88 | $616K |
| Feb 23, 2026 | Heyman William H | Vice Chairman | Option exercise(M) | 1K | $172.50 | $173K |
| Feb 23, 2026 | Heyman William H | Vice Chairman | Sell(S) | 1K | $309.00 | $309K |
| Feb 23, 2026 | Heyman William H | Vice Chairman | Option exercise(M) | 3K | $189.01 | $567K |
| Feb 23, 2026 | Heyman William H | Vice Chairman | Option exercise(M) | 1K | — | $0 |
| Feb 23, 2026 | Heyman William H | Vice Chairman | Option exercise(M) | 3K | — | $0 |
| Feb 20, 2026 | Kess Avrohom J. | Vice Chmn & Chief Legal Off | Option exercise(M) | 20K | $140.85 | $2.8M |
| Feb 20, 2026 | Kess Avrohom J. | Vice Chmn & Chief Legal Off | Sell(S) | 5K | $300.44 | $1.4M |
| Feb 20, 2026 | Kess Avrohom J. | Vice Chmn & Chief Legal Off | Tax withholding(F) | 15K | $300.98 | $4.6M |
| Feb 20, 2026 | Kess Avrohom J. | Vice Chmn & Chief Legal Off | Option exercise(M) | 20K | — | $0 |
| Feb 20, 2026 | Frey Daniel S. | EVP & Chief Financial Officer | Sell(S) | 8K | $299.50 | $2.4M |
| Feb 20, 2026 | Toczydlowski Gregory C | EVP & President, Business Ins. | Sell(S) | 12K | $299.76 | $3.7M |
| Feb 20, 2026 | Yin Daniel Tei-Hwa | EVP & Co-Chief Invest. Officer | Option exercise(M) | 8K | $118.78 | $1.0M |
| Feb 20, 2026 | Yin Daniel Tei-Hwa | EVP & Co-Chief Invest. Officer | Tax withholding(F) | 6K | $302.20 | $1.8M |
| Feb 20, 2026 | Yin Daniel Tei-Hwa | EVP & Co-Chief Invest. Officer | Option exercise(M) | 8K | — | $0 |
| Feb 20, 2026 | Heyman William H | Vice Chairman | Option exercise(M) | 1K | $172.50 | $173K |
| Feb 20, 2026 | Heyman William H | Vice Chairman | Sell(S) | 1K | $304.00 | $304K |
| Feb 20, 2026 | Heyman William H | Vice Chairman | Option exercise(M) | 1K | — | $0 |
| Feb 19, 2026 | Lefebvre Mojgan M | EVP & Chief Tech & Ops Officer | Sell(S) | 6K | $298.25 | $1.7M |
| Feb 18, 2026 | Klenk Jeffrey P. | EVP & Pres., Bond & Spec. Ins. | Grant(A) | 12K | — | $0 |
| Feb 18, 2026 | Klenk Jeffrey P. | EVP & Pres., Bond & Spec. Ins. | Tax withholding(F) | 6K | $298.46 | $1.7M |
| Feb 18, 2026 | Bessette Andy F | EVP and Chief Admin Officer | Grant(A) | 8K | — | $0 |
| Feb 18, 2026 | Bessette Andy F | EVP and Chief Admin Officer | Tax withholding(F) | 4K | $298.46 | $1.1M |
| Feb 18, 2026 | Kurtzman Diane | EVP & Chief HR Officer | Tax withholding(F) | 3K | $298.46 | $921K |
| Feb 18, 2026 | Kurtzman Diane | EVP & Chief HR Officer | Grant(A) | 6K | — | $0 |
| Feb 18, 2026 | Munson Paul E. | SVP & Corp. Controller | Tax withholding(F) | 414 | $298.46 | $124K |
| Feb 18, 2026 | Munson Paul E. | SVP & Corp. Controller | Grant(A) | 1K | — | $0 |
| Feb 18, 2026 | Frey Daniel S. | EVP & Chief Financial Officer | Tax withholding(F) | 8K | $298.46 | $2.2M |
| Feb 18, 2026 | Frey Daniel S. | EVP & Chief Financial Officer | Grant(A) | 16K | — | $0 |
| Feb 18, 2026 | Heyman William H | Vice Chairman | Grant(A) | 10K | — | $0 |
| Feb 18, 2026 | Heyman William H | Vice Chairman | Tax withholding(F) | 6K | $298.46 | $1.7M |
| Feb 18, 2026 | Olivo Maria | EVP, ERM & Chief Risk Officer | Grant(A) | 14K | — | $0 |
| Feb 18, 2026 | Olivo Maria | EVP, ERM & Chief Risk Officer | Tax withholding(F) | 7K | $298.46 | $2.0M |
| Feb 18, 2026 | Kess Avrohom J. | Vice Chmn & Chief Legal Off | Tax withholding(F) | 10K | $298.46 | $3.0M |
| Feb 18, 2026 | Kess Avrohom J. | Vice Chmn & Chief Legal Off | Grant(A) | 19K | — | $0 |
| Feb 18, 2026 | Schnitzer Alan D | Chairman and CEO, Director | Grant(A) | 96K | — | $0 |
| Feb 18, 2026 | Schnitzer Alan D | Chairman and CEO, Director | Tax withholding(F) | 53K | $298.46 | $15.8M |
| Feb 18, 2026 | Klein Michael Frederick | EVP & President, Personal Ins. | Grant(A) | 21K | — | $0 |
| Feb 18, 2026 | Klein Michael Frederick | EVP & President, Personal Ins. | Tax withholding(F) | 10K | $298.46 | $3.0M |
| Feb 18, 2026 | Toczydlowski Gregory C | EVP & President, Business Ins. | Grant(A) | 23K | — | $0 |
| Feb 18, 2026 | Toczydlowski Gregory C | EVP & President, Business Ins. | Tax withholding(F) | 11K | $298.46 | $3.2M |
| Feb 18, 2026 | Rowland David Donnay | EVP & Co-Chief Invest. Officer | Grant(A) | 9K | — | $0 |
| Feb 18, 2026 | Rowland David Donnay | EVP & Co-Chief Invest. Officer | Tax withholding(F) | 4K | $298.46 | $1.3M |
| Feb 18, 2026 | Yin Daniel Tei-Hwa | EVP & Co-Chief Invest. Officer | Tax withholding(F) | 5K | $298.46 | $1.4M |
| Feb 18, 2026 | Yin Daniel Tei-Hwa | EVP & Co-Chief Invest. Officer | Grant(A) | 9K | — | $0 |
| Feb 18, 2026 | Lefebvre Mojgan M | EVP & Chief Tech & Ops Officer | Grant(A) | 12K | — | $0 |
| Feb 18, 2026 | Lefebvre Mojgan M | EVP & Chief Tech & Ops Officer | Tax withholding(F) | 6K | $298.46 | $1.8M |
| Feb 17, 2026 | Bessette Andy F | EVP and Chief Admin Officer | Sell(S) | 543 | $299.03 | $162K |
| Feb 17, 2026 | Bessette Andy F | EVP and Chief Admin Officer | Sell(S) | 1K | $298.27 | $430K |
| Feb 17, 2026 | Bessette Andy F | EVP and Chief Admin Officer | Sell(S) | 4K | $297.25 | $1.2M |
| Feb 17, 2026 | Bessette Andy F | EVP and Chief Admin Officer | Option exercise(M) | 6K | $189.01 | $1.1M |
| Feb 17, 2026 | Bessette Andy F | EVP and Chief Admin Officer | Gift(G) | 417 | — | $0 |
| Feb 17, 2026 | Bessette Andy F | EVP and Chief Admin Officer | Option exercise(M) | 6K | — | $0 |
| Feb 17, 2026 | Heyman William H | Vice Chairman | Sell(S) | 1K | $300.00 | $300K |
| Feb 17, 2026 | Heyman William H | Vice Chairman | Option exercise(M) | 1K | $172.50 | $173K |
| Feb 17, 2026 | Heyman William H | Vice Chairman | Option exercise(M) | 1K | — | $0 |
| Feb 6, 2026 | Heyman William H | Vice Chairman | Option exercise(M) | 1K | $172.50 | $173K |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Coverage: Form 4 filings indexed 2021-03-29 → 2026-07-11. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).