Guindo Chirfi
Insider transactions at 2 companies
This page shows all SEC Form 4 filings attributed to Guindo Chirfi. Form 4 disclosures are required whenever a corporate insider — director, officer, or 10%+ shareholder — buys, sells, or receives company stock. Each row represents a separate reported transaction. All data is sourced directly from the SEC EDGAR public database.
| Company | Title | Type | Shares | Price | Value | Date |
|---|---|---|---|---|---|---|
| MRK | Chief Marketing Officer | Tax Withholding | 18,175 | $79.29 | $1,441,096 | Aug 4, 2025 |
| MRK | Chief Marketing Officer | Award / Grant | 28,158 | $97.94 | $2,757,795 | Jan 27, 2025 |
| MRK | Chief Marketing Officer | Tax Withholding | 17,412 | $115.20 | $2,005,862 | Aug 5, 2024 |
| MRK | Chief Marketing Officer | Tax Withholding | 17,989 | $105.70 | $1,901,437 | Aug 3, 2023 |
| BIIB | Head of Glob Prod Strat & Com | Tax Withholding | 879 | $209.79 | $184,405 | Feb 18, 2022 |
| BIIB | Head of Glob Prod Strat & Com | Option Exercise | 1,261 | — | — | Feb 12, 2022 |
| BIIB | Head of Glob Prod Strat & Com | Award / Grant | 3,088 | — | — | Jan 19, 2022 |
| BIIB | Head of Glob Prod Strat & Com | Sale | 3,087 | $440.00 | $1,358,280 | Jun 7, 2021 |
| BIIB | EVP Glob. Prod Strat and Comm | Tax Withholding | 477 | $278.03 | $132,620 | Feb 12, 2021 |
| BIIB | EVP Glob. Prod Strat and Comm | Tax Withholding | 214 | $243.16 | $52,036 | Dec 1, 2020 |
| BIIB | EVP Glob. Prod Strat and Comm | Option Exercise | 1,680 | — | — | Feb 12, 2020 |
| BIIB | EVP Glob. Prod Strat and Comm | Tax Withholding | 160 | $299.81 | $47,970 | Dec 1, 2019 |
| BIIB | EVP Glob. Mkt Acc & Cust Innov | Tax Withholding | 178 | $333.72 | $59,402 | Dec 1, 2018 |
| BIIB | EVP Glob. Mkt Acc & Cust Innov | Award / Grant | 2,350 | — | — | Dec 1, 2017 |