Form 4 for CRBU Caribou Biosciences, Inc.
Accepted 2025-02-21 00:00:00 ET · period of report 2025-02-20 · accession 0001670579-25-000003 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2025-02-21 | 2025-02-20 | CRBU | Haurwitz Rachel E. | Pres, CEO, Dir | A - Grant | $0.00 | +136.8K | 295.4K | +86% | $0 |
| D | 2025-02-21 | 2025-02-20 | CRBU | Haurwitz Rachel E. | Pres, CEO, Dir | A - Grant | $0.00 | +618.2K | 618.2K | New | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-02-20 | A | A | 136,750 | $0.00 | 295,450 | D | — | — | (F1) This reflects restricted stock units ("RSUs") that vest in four equal annual installments beginning on February 20, 2026, subject to the reporting person's continued services to the Issuer through the applicable vesting dates. The RSUs will be settled in stock within 30 days after each vesting date. |
| 2 | Derivative | Option to purchase Common Stock | 2025-02-20 | A | A | 618,250 | $0.00 | 618,250 | D | $1.41 · — to 2035-02-19 | 618,250 Common Stock | (F3) 25% of the options will vest upon the one-year anniversary of the grant date, February 20, 2026, and 1/48th will vest monthly thereafter over the 36-month period following the one-year cliff, subject to the reporting person's continued service to the Issuer through the applicable vesting dates. |