MRK
Merck & Company Inc
NYSE: MRK · HEALTHCARE · DRUG MANUFACTURERS - GENERAL
$109.18
-1.60% today
Updated 2026-04-29
Market cap
$274.03B
P/E ratio
15.24
P/S ratio
4.22x
EPS (TTM)
$7.28
Dividend yield
2.94%
52W range
$71 – $124
Volume
9.8M
Merck & Company Inc (MRK) Insider transactions
Net insider activity
Net buying (75,157 shares)
Buy transactions
62
Sell transactions
38
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-31 | SEIDMAN, CHRISTINE E | Director | Buy | 68 | $120.29 | $8179.72 |
| 2026-03-31 | GLOCER, THOMAS H | Director | Buy | 405 | $120.29 | $48717.45 |
| 2026-03-31 | COE, MARY ELLEN | Director | Buy | 249 | $120.29 | $29952.21 |
| 2026-02-12 | GUINDO, CHIRFI | Chief Marketing Officer | Sale | 10,000 | $121.46 | $1.21M |
| 2026-02-10 | LI, DEAN Y | Executive VP & President, MRL | Sale | 10,235 | $117.52 | $1.20M |
| 2026-02-09 | ZACHARY, JENNIFER | EVP, General Counsel | Sale | 56,792 | — | — |
| 2026-02-09 | ZACHARY, JENNIFER | EVP, General Counsel | Sale | 38,835 | — | — |
| 2026-02-09 | ZACHARY, JENNIFER | EVP, General Counsel | Sale | 25,946 | — | — |
| 2026-02-09 | ZACHARY, JENNIFER | EVP, General Counsel | Buy | 56,792 | $119.15 | $6.77M |
| 2026-02-09 | ZACHARY, JENNIFER | EVP, General Counsel | Buy | 38,835 | $119.15 | $4.63M |
| 2026-02-09 | ZACHARY, JENNIFER | EVP, General Counsel | Buy | 25,946 | $119.15 | $3.09M |
| 2026-02-09 | GUINDO, CHIRFI | Chief Marketing Officer | Sale | 10,000 | $118.41 | $1.18M |
| 2026-02-06 | WILLIAMS, DAVID MICHAEL | EVP,Chief Info&Digital Officer | Sale | 5,000 | — | — |
| 2026-02-06 | WILLIAMS, DAVID MICHAEL | EVP,Chief Info&Digital Officer | Buy | 5,000 | $77.62 | $388100.00 |
| 2026-02-06 | OOSTHUIZEN, JOHANNES JACOBUS | President, U.S. Market | Sale | 15,000 | $121.87 | $1.83M |
| 2026-02-06 | DELUCA, RICHARD R. | EVP&Pres, Merck Animal Heallth | Sale | 37,685 | $120.92 | $4.56M |
| 2026-02-05 | GUINDO, CHIRFI | Chief Marketing Officer | Sale | 20,000 | $121.88 | $2.44M |
| 2026-02-04 | SMART, DALTON E. III | SVP Fin. - Global Controller | Sale | 4,000 | — | — |
| 2026-02-04 | SMART, DALTON E. III | SVP Fin. - Global Controller | Buy | 4,000 | $62.07 | $248280.00 |
| 2026-02-04 | SMART, DALTON E. III | SVP Fin. - Global Controller | Sale | 2,400 | $119.68 | $287220.00 |
| 2026-02-04 | LITCHFIELD, CAROLINE | EVP & CFO | Sale | 41,997 | — | — |
| 2026-02-04 | LITCHFIELD, CAROLINE | EVP & CFO | Sale | 41,997 | $119.61 | $5.02M |
| 2026-02-04 | LI, DEAN Y | Executive VP & President, MRL | Sale | 15,087 | — | — |
| 2026-02-04 | LI, DEAN Y | Executive VP & President, MRL | Sale | 15,087 | $118.77 | $1.79M |
| 2026-02-04 | DAVIS, ROBERT M | Director, Chairman, CEO & President | Sale | 32,462 | $118.35 | $3.84M |
| 2026-02-04 | DAVIS, ROBERT M | Director, Chairman, CEO & President | Sale | 14,972 | $117.38 | $1.76M |
| 2026-01-26 | ZACHARY, JENNIFER | EVP, General Counsel | Buy | 11,583 | $107.40 | $1.24M |
| 2026-01-26 | WILLIAMS, DAVID MICHAEL | EVP,Chief Info&Digital Officer | Buy | 6,112 | $107.40 | $656428.80 |
| 2026-01-26 | SMART, DALTON E. III | SVP Fin. - Global Controller | Buy | 1,066 | $107.40 | $114488.40 |
| 2026-01-26 | ROMANELLI, JOSEPH | President, Human Health Int?l | Buy | 5,703 | $107.40 | $612502.20 |
| 2026-01-26 | OOSTHUIZEN, JOHANNES JACOBUS | President, U.S. Market | Buy | 5,026 | $107.40 | $539792.40 |
| 2026-01-26 | LITCHFIELD, CAROLINE | EVP & CFO | Buy | 15,852 | $107.40 | $1.70M |
| 2026-01-26 | LI, DEAN Y | Executive VP & President, MRL | Buy | 20,469 | $107.40 | $2.20M |
| 2026-01-26 | GUINDO, CHIRFI | Chief Marketing Officer | Buy | 9,865 | $107.40 | $1.06M |
| 2026-01-26 | DELUCA, RICHARD R. | EVP&Pres, Merck Animal Heallth | Buy | 12,264 | $107.40 | $1.32M |
| 2026-01-26 | DAVIS, ROBERT M | Director, Chairman, CEO & President | Buy | 47,434 | $107.40 | $5.09M |
| 2026-01-26 | CHATTOPADHYAY, SANAT | Exe V-P & Pres. MMD | Buy | 13,880 | $107.40 | $1.49M |
| 2025-12-31 | SEIDMAN, CHRISTINE E | Director | Buy | 77 | $105.26 | $8105.02 |
| 2025-12-31 | GLOCER, THOMAS H | Director | Buy | 463 | $105.26 | $48735.38 |
| 2025-12-31 | COE, MARY ELLEN | Director | Buy | 285 | $105.26 | $29999.10 |
| 2025-11-10 | DOWNING, CRISTAL N | Chief Comm. & Public Afrs Ofcr | Sale | 7,085 | $87.00 | $616395.00 |
| 2025-11-03 | WILLIAMS, DAVID MICHAEL | EVP,Chief Info&Digital Officer | Sale | 8,614 | $83.59 | $720039.95 |
| 2025-09-30 | SEIDMAN, CHRISTINE E | Director | Buy | 97 | $83.93 | $8141.21 |
| 2025-09-30 | GLOCER, THOMAS H | Director | Buy | 581 | $83.93 | $48763.33 |
| 2025-09-30 | COE, MARY ELLEN | Director | Buy | 357 | $83.93 | $29963.01 |
| 2025-08-04 | WILLIAMS, DAVID MICHAEL | EVP,Chief Info&Digital Officer | Sale | 17,119 | — | — |
| 2025-08-04 | WILLIAMS, DAVID MICHAEL | EVP,Chief Info&Digital Officer | Buy | 17,119 | $79.29 | $1.36M |
| 2025-08-04 | WILLIAMS, DAVID MICHAEL | EVP,Chief Info&Digital Officer | Sale | 8,432 | $79.29 | $668573.28 |
| 2025-08-04 | GUINDO, CHIRFI | Chief Marketing Officer | Sale | 36,903 | — | — |
| 2025-08-04 | GUINDO, CHIRFI | Chief Marketing Officer | Buy | 36,903 | $79.29 | $2.93M |
| 2025-08-04 | GUINDO, CHIRFI | Chief Marketing Officer | Sale | 18,175 | $79.29 | $1.44M |
| 2025-06-30 | SEIDMAN, CHRISTINE E | Director | Buy | 103 | $79.16 | $8153.48 |
| 2025-06-30 | GLOCER, THOMAS H | Director | Buy | 616 | $79.16 | $48762.56 |
| 2025-06-30 | COE, MARY ELLEN | Director | Buy | 379 | $79.16 | $30001.64 |
| 2025-05-30 | WARDEN, KATHY J | Director | Buy | 2,863 | $76.84 | $219992.92 |
| 2025-05-30 | THULIN, INGE G | Director | Buy | 2,863 | $76.84 | $219992.92 |
| 2025-05-30 | SEIDMAN, CHRISTINE E | Director | Buy | 2,863 | $76.84 | $219992.92 |
| 2025-05-30 | RUSSO, PATRICIA F | Director | Buy | 2,863 | $76.84 | $219992.92 |
| 2025-05-30 | ROTHMAN, PAUL | Director | Buy | 2,863 | $76.84 | $219992.92 |
| 2025-05-30 | MAYO, STEPHEN | Director | Buy | 2,863 | $76.84 | $219992.92 |
| 2025-05-30 | LAVIZZO-MOUREY, RISA J | Director | Buy | 2,863 | $76.84 | $219992.92 |
| 2025-05-30 | KARSANBHAI, SURENDRALAL LANCA | Director | Buy | 2,863 | $76.84 | $219992.92 |
| 2025-05-30 | GLOCER, THOMAS H | Director | Buy | 2,863 | $76.84 | $219992.92 |
| 2025-05-30 | CRAIG, PAMELA J. | Director | Buy | 2,863 | $76.84 | $219992.92 |
| 2025-05-30 | COE, MARY ELLEN | Director | Buy | 2,863 | $76.84 | $219992.92 |
| 2025-05-30 | BAKER, DOUGLAS M JR | Director | Buy | 2,863 | $76.84 | $219992.92 |
| 2025-05-03 | SMART, DALTON E. III | SVP Fin. - Global Controller | Sale | 1,532 | — | — |
| 2025-05-03 | SMART, DALTON E. III | SVP Fin. - Global Controller | Sale | 518 | — | — |
| 2025-05-03 | SMART, DALTON E. III | SVP Fin. - Global Controller | Buy | 1,532 | $83.18 | $127431.76 |
| 2025-05-03 | SMART, DALTON E. III | SVP Fin. - Global Controller | Sale | 588 | $83.18 | $48909.84 |
| 2025-05-03 | SMART, DALTON E. III | SVP Fin. - Global Controller | Buy | 518 | $83.18 | $43087.24 |
| 2025-05-03 | SMART, DALTON E. III | SVP Fin. - Global Controller | Sale | 256 | $83.18 | $21294.08 |
| 2025-05-02 | SMART, DALTON E. III | SVP Fin. - Global Controller | Sale | 381 | — | — |
| 2025-05-02 | SMART, DALTON E. III | SVP Fin. - Global Controller | Buy | 381 | $83.26 | $31722.06 |
| 2025-05-02 | SMART, DALTON E. III | SVP Fin. - Global Controller | Sale | 131 | $83.26 | $10907.06 |
| 2025-05-02 | ROMANELLI, JOSEPH | President, Human Health Int?l | Sale | 2,262 | — | — |
| 2025-05-02 | ROMANELLI, JOSEPH | President, Human Health Int?l | Buy | 2,262 | $83.26 | $188334.12 |
| 2025-05-02 | ROMANELLI, JOSEPH | President, Human Health Int?l | Sale | 1,115 | $83.26 | $92834.90 |
| 2025-04-30 | SMART, DALTON E. III | SVP Fin. - Global Controller | Sale | 464 | — | — |
| 2025-04-30 | SMART, DALTON E. III | SVP Fin. - Global Controller | Buy | 464 | $84.71 | $39305.44 |
| 2025-04-30 | SMART, DALTON E. III | SVP Fin. - Global Controller | Sale | 159 | $84.71 | $13468.89 |
| 2025-04-30 | ROMANELLI, JOSEPH | President, Human Health Int?l | Sale | 2,063 | — | — |
| 2025-04-30 | ROMANELLI, JOSEPH | President, Human Health Int?l | Buy | 2,063 | $84.71 | $174756.73 |
| 2025-04-30 | ROMANELLI, JOSEPH | President, Human Health Int?l | Sale | 1,017 | $84.71 | $86150.07 |
| 2025-04-30 | LARSON, BETTY D | EVP, Chief HR Officer | Sale | 11,350 | — | — |
| 2025-04-30 | LARSON, BETTY D | EVP, Chief HR Officer | Buy | 11,350 | $84.71 | $961458.50 |
| 2025-04-30 | LARSON, BETTY D | EVP, Chief HR Officer | Sale | 5,153 | $84.71 | $436510.63 |
| 2025-04-29 | ZACHARY, JENNIFER | EVP, General Counsel | Buy | 40,301 | — | — |
| 2025-04-29 | ZACHARY, JENNIFER | EVP, General Counsel | Buy | 8,854 | — | — |
| 2025-04-29 | WILLIAMS, DAVID MICHAEL | EVP,Chief Info&Digital Officer | Buy | 18,807 | — | — |
| 2025-04-29 | WILLIAMS, DAVID MICHAEL | EVP,Chief Info&Digital Officer | Buy | 4,132 | — | — |
| 2025-04-29 | SMART, DALTON E. III | SVP Fin. - Global Controller | Buy | 6,448 | — | — |
| 2025-04-29 | SMART, DALTON E. III | SVP Fin. - Global Controller | Buy | 2,833 | — | — |
| 2025-04-29 | ROMANELLI, JOSEPH | President, Human Health Int?l | Buy | 21,494 | — | — |
| 2025-04-29 | ROMANELLI, JOSEPH | President, Human Health Int?l | Buy | 9,444 | — | — |
| 2025-04-29 | ROMANELLI, JOSEPH | President, Human Health Int?l | Buy | 4,722 | — | — |
| 2025-04-29 | OOSTHUIZEN, JOHANNES JACOBUS | President, U.S. Market | Buy | 18,807 | — | — |
| 2025-04-29 | OOSTHUIZEN, JOHANNES JACOBUS | President, U.S. Market | Buy | 4,132 | — | — |
| 2025-04-29 | LITCHFIELD, CAROLINE | EVP & CFO | Buy | 53,735 | — | — |
| 2025-04-29 | LITCHFIELD, CAROLINE | EVP & CFO | Buy | 11,805 | — | — |