Insider trades › Merck · Merck company page
Merck insider trading
Transactions in MRK stock reported by Merck executives, directors and large holders on SEC Form 4 over the last 120 days. Last update 2026-10-14.
$30.0Mopen-market sales (228,238 shares, 5 insiders)
$0open-market purchases (0 shares, 0 insiders)
13Form 4 filings
Insiders
Jennifer Zachary EVP, General Counsel Sold $10.7M David Michael Williams EVP,Chief Info&Digital Officer Sold $6.8M Richard R. DeLuca EVP&Pres, Merck Animal Heallth Sold $6.7M Chirfi Guindo EVP, Access, Policy & Comms Sold $3.3M David R. Maraldo EVP & Pres. MMD Sold $2.4M
All transactions
| Date | Insider | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|
| Aug 13, 2026 | Chirfi Guindo EVP, Access, Policy & Comms | Open-market sale | 10,000 | $135.00 | $1.4M | Form 4 ↗ |
| Aug 12, 2026 | Jennifer Zachary EVP, General Counsel | Option or RSU exercise | 41,494 | $117.89 | — | Form 4 ↗ |
| Aug 12, 2026 | Jennifer Zachary EVP, General Counsel | Option or RSU exercise | 13,433 | $84.71 | — | Form 4 ↗ |
| Aug 12, 2026 | Jennifer Zachary EVP, General Counsel | Open-market sale | 80,315 | $133.46 | $10.7M | Form 4 ↗ |
| Aug 12, 2026 | Richard R. DeLuca EVP&Pres, Merck Animal Heallth | Open-market sale | 11,099 | $131.61 | $1.5M | Form 4 ↗ |
| Aug 12, 2026 | Richard R. DeLuca EVP&Pres, Merck Animal Heallth | Open-market sale | 600 | $132.04 | $79K | Form 4 ↗ |
| Aug 11, 2026 | Richard R. DeLuca EVP&Pres, Merck Animal Heallth | Open-market sale | 7,410 | $131.33 | $973K | Form 4 ↗ |
| Aug 11, 2026 | Richard R. DeLuca EVP&Pres, Merck Animal Heallth | Open-market sale | 5,427 | $132.35 | $718K | Form 4 ↗ |
| Aug 10, 2026 | Richard R. DeLuca EVP&Pres, Merck Animal Heallth | Open-market sale | 20,784 | $130.43 | $2.7M | Form 4 ↗ |
| Aug 6, 2026 | Richard R. DeLuca EVP&Pres, Merck Animal Heallth | Open-market sale | 805 | $131.02 | $105K | Form 4 ↗ |
| Aug 6, 2026 | Richard R. DeLuca EVP&Pres, Merck Animal Heallth | Open-market sale | 4,945 | $130.23 | $644K | Form 4 ↗ |
| Aug 6, 2026 | Richard R. DeLuca EVP&Pres, Merck Animal Heallth | Open-market sale | 300 | $131.02 | $39K | Form 4 ↗ |
| Aug 6, 2026 | Chirfi Guindo EVP, Access, Policy & Comms | Open-market sale | 15,000 | $131.00 | $2.0M | Form 4 ↗ |
| Aug 5, 2026 | David R. Maraldo EVP & Pres. MMD | Option or RSU exercise | 6,311 | $73.73 | — | Form 4 ↗ |
| Aug 5, 2026 | David R. Maraldo EVP & Pres. MMD | Open-market sale | 6,311 | $128.72 | $812K | Form 4 ↗ |
| Aug 5, 2026 | David R. Maraldo EVP & Pres. MMD | Option or RSU exercise | 9,709 | $87.10 | — | Form 4 ↗ |
| Aug 5, 2026 | David R. Maraldo EVP & Pres. MMD | Open-market sale | 9,709 | $128.72 | $1.2M | Form 4 ↗ |
| Aug 5, 2026 | David R. Maraldo EVP & Pres. MMD | Option or RSU exercise | 2,686 | $84.71 | — | Form 4 ↗ |
| Aug 5, 2026 | David R. Maraldo EVP & Pres. MMD | Open-market sale | 2,686 | $128.72 | $346K | Form 4 ↗ |
| Aug 5, 2026 | David Michael Williams EVP,Chief Info&Digital Officer | Option or RSU exercise | 4,600 | $77.62 | — | Form 4 ↗ |
| Aug 5, 2026 | David Michael Williams EVP,Chief Info&Digital Officer | Open-market sale | 4,600 | $128.77 | $592K | Form 4 ↗ |
| Aug 5, 2026 | David Michael Williams EVP,Chief Info&Digital Officer | Option or RSU exercise | 13,542 | $75.36 | — | Form 4 ↗ |
| Aug 5, 2026 | David Michael Williams EVP,Chief Info&Digital Officer | Open-market sale | 13,542 | $128.77 | $1.7M | Form 4 ↗ |
| Aug 5, 2026 | David Michael Williams EVP,Chief Info&Digital Officer | Option or RSU exercise | 34,705 | $73.73 | — | Form 4 ↗ |
| Aug 5, 2026 | David Michael Williams EVP,Chief Info&Digital Officer | Open-market sale | 34,705 | $128.77 | $4.5M | Form 4 ↗ |
Source: SEC EDGAR, Merck Form 4 filings. Values are shares × reported price for open-market trades. Insider trades are reported facts, not recommendations. Not investment advice. See the tracker for how to read the codes.