Form4insider filings, from the source

Insider · CIK 0001820958

David Michael Williams

Files at: MRK. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $6.8M · 1net −$6.8M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesSep 2024Jan 2025May 2025Sep 2025Jan 2026May 2026Sep 2026

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Aug 5, 2026 SForm 4 →Aug 7, 4:19 pm EDTMerck & Co., Inc.MRK52,847$128.77$6,805,14531,716−62.5%
Aug 5, 2026 MForm 4 →Aug 7, 4:19 pm EDTMerck & Co., Inc.MRK52,847$74.49$3,936,37766,421—

Reported trades — derivatives (options, RSUs, warrants)

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Aug 5, 2026 MForm 4 →Aug 7, 4:19 pm EDTMerck & Co., Inc.MRK52,847——0—