Merck & Co., Inc.
MRKLast close · Oct 16, 2026145.97+0.78 (+0.53%)
Market cap$360.1B
Between May 29, 2026 and Sep 30, 2026, Merck (MRK) insiders filed 40 Form 4 transactions: 17 sales worth $30.0M in total and no open-market purchase. The largest seller was Zachary Jennifer, $10.7M. 23 other filings were grants, exercises or gifts, which say nothing about buying or selling.
40
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17
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Form 4 transactions
| Date | Insider | Title | Code | Plan | Shares | Price | Value |
|---|---|---|---|---|---|---|---|
| 2026-09-30 | Seidman Christine E | Director | A | 56 | 145.31 | $8,125 | |
| 2026-09-30 | Karsanbhai Surendralal Lanca | Director | A | 112 | 145.31 | $16,250 | |
| 2026-09-30 | Coe Mary Ellen | Director | A | 206 | 145.31 | $30,000 | |
| 2026-08-13 | Guindo Chirfi | EVP, Access, Policy & Comms | S | 10,000 | 135.00 | $1.4M | |
| 2026-08-12 | Zachary Jennifer | EVP, General Counsel | M | 41,494 | 117.89 | $4.9M | |
| 2026-08-12 | Zachary Jennifer | EVP, General Counsel | M | 13,433 | 84.71 | $1.1M | |
| 2026-08-12 | Zachary Jennifer | EVP, General Counsel | S | 80,315 | 133.46 | $10.7M | |
| 2026-08-12 | Zachary Jennifer | EVP, General Counsel | M | 41,494 | 0.00 | $0 | |
| 2026-08-12 | Zachary Jennifer | EVP, General Counsel | M | 13,433 | 0.00 | $0 | |
| 2026-08-10 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | S | 20,784 | 130.43 | $2.7M | |
| 2026-08-11 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | S | 7,410 | 131.33 | $973,164.9 | |
| 2026-08-11 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | S | 5,427 | 132.35 | $718,261.3 | |
| 2026-08-12 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | S | 11,099 | 131.61 | $1.5M | |
| 2026-08-12 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | S | 600 | 132.04 | $79,222 | |
| 2026-08-06 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | S | 805 | 131.02 | $105,472.4 | |
| 2026-08-06 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | S | 4,945 | 130.23 | $643,993.3 | |
| 2026-08-06 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | S | 300 | 131.02 | $39,307 | |
| 2026-08-05 | Maraldo David R. | EVP & Pres. MMD | M | 6,311 | 73.73 | $465,310 | |
| 2026-08-05 | Maraldo David R. | EVP & Pres. MMD | S | 6,311 | 128.72 | $812,338.7 | |
| 2026-08-05 | Maraldo David R. | EVP & Pres. MMD | M | 9,709 | 87.10 | $845,653.9 | |
| 2026-08-05 | Maraldo David R. | EVP & Pres. MMD | S | 9,709 | 128.72 | $1.2M | |
| 2026-08-05 | Maraldo David R. | EVP & Pres. MMD | M | 2,686 | 84.71 | $227,531.1 | |
| 2026-08-05 | Maraldo David R. | EVP & Pres. MMD | S | 2,686 | 128.72 | $345,736.3 | |
| 2026-08-05 | Maraldo David R. | EVP & Pres. MMD | M | 6,311 | 0.00 | $0 | |
| 2026-08-05 | Maraldo David R. | EVP & Pres. MMD | M | 9,709 | 0.00 | $0 | |
| 2026-08-05 | Maraldo David R. | EVP & Pres. MMD | M | 2,686 | 0.00 | $0 | |
| 2026-08-05 | Williams David Michael | EVP,Chief Info&Digital Officer | M | 4,600 | 77.62 | $357,052 | |
| 2026-08-05 | Williams David Michael | EVP,Chief Info&Digital Officer | S | 4,600 | 128.77 | $592,345.2 | |
| 2026-08-05 | Williams David Michael | EVP,Chief Info&Digital Officer | M | 13,542 | 75.36 | $1.0M | |
| 2026-08-05 | Williams David Michael | EVP,Chief Info&Digital Officer | S | 13,542 | 128.77 | $1.7M | |
| 2026-08-05 | Williams David Michael | EVP,Chief Info&Digital Officer | M | 34,705 | 73.73 | $2.6M | |
| 2026-08-05 | Williams David Michael | EVP,Chief Info&Digital Officer | S | 34,705 | 128.77 | $4.5M | |
| 2026-08-05 | Williams David Michael | EVP,Chief Info&Digital Officer | M | 4,600 | 0.00 | $0 | |
| 2026-08-05 | Williams David Michael | EVP,Chief Info&Digital Officer | M | 13,542 | 0.00 | $0 | |
| 2026-08-05 | Williams David Michael | EVP,Chief Info&Digital Officer | M | 34,705 | 0.00 | $0 | |
| 2026-08-06 | Guindo Chirfi | EVP, Access, Policy & Comms | S | 15,000 | 131.00 | $2.0M | |
| 2026-06-30 | Seidman Christine E | Director | A | 63 | 128.50 | $8,125 | |
| 2026-06-30 | Karsanbhai Surendralal Lanca | Director | A | 126 | 128.50 | $16,250 | |
| 2026-06-30 | Coe Mary Ellen | Director | A | 233 | 128.50 | $30,000 | |
| 2026-05-29 | Warden Kathy J | Director | A | 1,853 | 118.72 | $220,000 |
Codes are the SEC's: P open-market purchase, S open-market sale; M exercise, F tax withholding, A grant and G gift are routine. A 10b5-1 flag means the trade ran under a plan adopted in advance. Method notes in where the numbers come from.