| 2026-05-05 | Posner Brian S | Award | 2,071 | — |
| 2026-05-05 | Goodman Laurie | Award | 2,071 | — |
| 2026-05-05 | MALLESCH EILEEN A | Award | 2,071 | — |
| 2026-05-05 | PASQUESI JOHN M | Award | 2,071 | — |
| 2026-05-05 | PASQUESI JOHN M | Award | 1,327 | — |
| 2026-05-05 | PASQUESI JOHN M | Award | 1,858 | — |
| 2026-05-05 | Triplett Neal F | Award | 2,071 | — |
| 2026-05-05 | Triplett Neal F | Award | 1,327 | — |
| 2026-05-05 | Houston Daniel Joseph | Award | 2,071 | — |
| 2026-05-05 | Houston Daniel Joseph | Award | 1,327 | — |
| 2026-05-05 | KILCOYNE MOIRA A. | Award | 2,071 | — |
| 2026-05-05 | KILCOYNE MOIRA A. | Award | 1,327 | — |
| 2026-05-05 | MOCZARSKI ALEXANDER S | Award | 2,071 | — |
| 2026-05-05 | Ebong Francis | Award | 2,071 | — |
| 2026-05-05 | BUNCE JOHN L JR | Award | 2,071 | — |
| 2026-05-05 | BUNCE JOHN L JR | Award | 1,327 | — |
| 2026-04-30 | Houston Daniel Joseph | Buy | 5,300 | $498.7K |
| 2026-03-11 | Posner Brian S | Sale | 3,000 | -$51.3K |
| 2026-03-10 | Papadopoulo NicolasCEO | Sale | 21,930 | -$2.1M |
| 2026-03-10 | Gansberg DavidPresident, Arch Capital Group | Sale | 5,907 | -$569.3K |
| 2026-03-10 | Gansberg DavidPresident, Arch Capital Group | Exercise | 10,770 | $203.6K |
| 2026-03-10 | Papadopoulo NicolasCEO | Exercise | 21,930 | $414.5K |
| 2026-03-04 | Rajeh MaamounPresident, Arch Capital Group | Gift | 40,600 | — |
| 2026-03-04 | PETRILLO LOUIS TOfficer of Subsidiary | Tax withhold | 8,030 | -$790.3K |
| 2026-03-04 | Gansberg DavidPresident, Arch Capital Group | Tax withhold | 12,519 | -$1.2M |
| 2026-03-04 | Rajeh MaamounPresident, Arch Capital Group | Gift | 40,600 | — |
| 2026-03-03 | Papadopoulo NicolasCEO | Award | 21,318 | — |
| 2026-03-03 | Todd ChristineChief Investment Officer | Award | 3,981 | — |
| 2026-03-03 | Rajeh MaamounPresident, Arch Capital Group | Award | 6,843 | — |
| 2026-03-03 | PETRILLO LOUIS TOfficer of Subsidiary | Award | 2,889 | — |