Form 4 for GOSS Gossamer Bio, Inc.
Accepted 2026-01-05 00:00:00 ET · period of report 2026-01-02 · accession 0001867872-26-000002 · 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 | 2026-01-05 | 2026-01-02 | GOSS | Aranda Richard | Chief Medical Off | A - Grant | $0.00 | +93.8K | 463.1K | +25% | $0 |
| D | 2026-01-05 | 2026-01-02 | GOSS | Aranda Richard | Chief Medical Off | A - Grant | $0.00 | +562.5K | 562.5K | 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 | 2026-01-02 | A | A | 93,750 | $0.00 | 463,106 | D | — | — | (F1) Represents restricted stock unit award, which will vest in four equal annual installments in accordance with the terms of the award and subject to the Reporting Person's continuous service to the Issuer on each vesting date. |
| 2 | Derivative | Stock Option (Right to Buy) | 2026-01-02 | A | A | 562,500 | $0.00 | 562,500 | D | $2.88 · — to 2036-01-01 | 562,500 Common Stock | (F2) 25% of the total number of shares subject to the option will vest on January 2, 2027 and 1/48th of the total number of shares subject to the option vest on the last day of each one-month period thereafter, subject to the Reporting Person's continuous service to the Issuer on each such vesting date. |