| Id | Content |
|---|---|
| F1 | Represents award granted pursuant to the terms of the W. R. Berkley Corporation 2009 Directors Stock Plan, as amended and restated. |
| F2 | Includes 1,791,511 shares of common stock underlying vested Restricted Stock Units ("RSUs") (the receipt of which has been deferred) and does not include shares of common stock underlying unvested performance-based RSUs. On March 23, 2022, the Company's common stock split on a 3-for-2 basis ("Stock Split"), resulting in an increase of 898,337 shares of common stock directly owned by the reporting person, including 597,172 shares underlying vested RSUs. |
| F3 | Includes an increase of 300,000 shares of common stock beneficially owned resulting from the Stock Split. |