Insider Transactions last 24 months for Merck & Co., Inc. - NYSE: MRK
Transactions
All
Buy
Sell
Option Exercise
Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Guindo Chirfi Chief Marketing Officer 02/12/2026 DS Direct COM 10,000 $121.46 $1,214,562.00 60,615 Li Dean Y Executive VP & President, MRL 02/10/2026 DS Direct COM 10,235 $117.52 $1,202,843.81 92,035 Zachary Jennifer EVP, General Counsel 02/09/2026 DS Direct COM 38,835 $119.15 $4,627,275.69 68,916 Zachary Jennifer EVP, General Counsel 02/09/2026 AM Direct COM 38,835 $119.15 $4,627,275.69 107,751 Zachary Jennifer EVP, General Counsel 02/09/2026 DS Direct COM 56,792 $119.15 $6,766,891.74 68,916 Zachary Jennifer EVP, General Counsel 02/09/2026 AM Direct COM 56,792 $119.15 $6,766,891.74 125,708 Zachary Jennifer EVP, General Counsel 02/09/2026 DS Direct COM 25,946 $119.15 $3,091,522.98 68,916 Zachary Jennifer EVP, General Counsel 02/09/2026 AM Direct COM 25,946 $119.15 $3,091,522.98 94,862 Guindo Chirfi Chief Marketing Officer 02/09/2026 DS Direct COM 10,000 $118.41 $1,184,101.00 70,615 Deluca Richard R. EVP&Pres, Merck Animal Heallth 02/06/2026 DS Direct COM 37,685 $120.92 $4,557,024.71 160,174 Oosthuizen Johannes Jacobus President, U.S. Market 02/06/2026 DS Direct COM 15,000 $121.87 $1,827,991.50 21,197 Williams David Michael EVP,Chief Info&Digital Officer 02/06/2026 DS Direct COM 5,000 $121.91 $609,525.00 30,838 Williams David Michael EVP,Chief Info&Digital Officer 02/06/2026 AM Direct COM 5,000 $77.62 $388,100.00 35,838 Guindo Chirfi Chief Marketing Officer 02/05/2026 DS Direct COM 20,000 $121.88 $2,437,676.00 80,615 Davis Robert M Chairman, CEO & President 02/04/2026 DS Direct COM 32,462 $118.35 $3,841,919.90 443,602 Davis Robert M Chairman, CEO & President 02/04/2026 DS Direct COM 14,972 $117.38 $1,757,407.37 476,064 Li Dean Y Executive VP & President, MRL 02/04/2026 DS Direct COM 15,087 $118.77 $1,791,824.15 102,270 Li Dean Y Executive VP & President, MRL 02/04/2026 AM Direct COM 15,087 $56.04 $845,475.48 117,357 Litchfield Caroline EVP & CFO 02/04/2026 DS Direct COM 41,997 $119.61 $5,023,311.57 90,192 Litchfield Caroline EVP & CFO 02/04/2026 AM Direct COM 41,997 $53.06 $2,228,360.82 132,189 Smart Dalton E. Iii SVP Fin. - Global Controller 02/04/2026 DS Direct COM 2,400 $119.68 $287,220.00 8,205 Smart Dalton E. Iii SVP Fin. - Global Controller 02/04/2026 DS Direct COM 4,000 $119.68 $478,700.00 10,605 Smart Dalton E. Iii SVP Fin. - Global Controller 02/04/2026 AM Direct COM 4,000 $62.07 $248,280.00 14,605 Chattopadhyay Sanat Exe V-P & Pres. MMD 01/26/2026 AA Direct COM 13,880 $107.40 $1,490,712.00 13,880 Davis Robert M Chairman, CEO & President 01/26/2026 AA Direct COM 47,434 $107.40 $5,094,411.60 491,036
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Chattopadhyay Sanat Exe V-P & Pres. MMD 01/26/2026 AA Direct COM 13,880 $107.40 $1,490,712.00 13,880 Davis Robert M Chairman, CEO & President 01/26/2026 AA Direct COM 47,434 $107.40 $5,094,411.60 491,036 Deluca Richard R. EVP&Pres, Merck Animal Heallth 01/26/2026 AA Direct COM 12,264 $107.40 $1,317,153.60 197,859 Guindo Chirfi Chief Marketing Officer 01/26/2026 AA Direct COM 9,865 $107.40 $1,059,501.00 100,615 Li Dean Y Executive VP & President, MRL 01/26/2026 AA Direct COM 20,469 $107.40 $2,198,370.60 102,270 Litchfield Caroline EVP & CFO 01/26/2026 AA Direct COM 15,852 $107.40 $1,702,504.80 90,192 Oosthuizen Johannes Jacobus President, U.S. Market 01/26/2026 AA Direct COM 5,026 $107.40 $539,792.40 36,197 Romanelli Joseph President, Human Health Int?l 01/26/2026 AA Direct COM 5,703 $107.40 $612,502.20 28,739 Smart Dalton E. Iii SVP Fin. - Global Controller 01/26/2026 AA Direct COM 1,066 $107.40 $114,488.40 10,605 Williams David Michael EVP,Chief Info&Digital Officer 01/26/2026 AA Direct COM 6,112 $107.40 $656,428.80 30,838 Zachary Jennifer EVP, General Counsel 01/26/2026 AA Direct COM 11,583 $107.40 $1,244,014.20 68,916 Thulin Inge G Director 02/06/2025 AP Direct COM 2,833 $88.25 $249,999.98 2,933 Baker Douglas M Jr Director 02/05/2025 AP Direct COM 15,000 $88.50 $1,327,500.00 16,000 Guindo Chirfi Chief Marketing Officer 01/27/2025 AA Direct COM 28,158 $97.94 $2,757,794.52 69,144 Chattopadhyay Sanat Exe V-P & Pres. MMD 01/27/2025 AA Direct COM 28,136 $97.94 $2,755,639.84 78,758 Davis Robert M Chairman, CEO & President 01/27/2025 AA Direct COM 95,275 $97.94 $9,331,233.50 443,602 Deluca Richard R. EVP&Pres, Merck Animal Heallth 01/27/2025 AA Direct COM 25,438 $97.94 $2,491,397.72 178,993 Downing Cristal N Chief Comm. & Public Afrs Ofcr 01/27/2025 AA Direct COM 9,446 $97.94 $925,141.24 9,446 Li Dean Y Executive VP & President, MRL 01/27/2025 AA Direct COM 32,621 $97.94 $3,194,900.74 79,592 Litchfield Caroline EVP & CFO 01/27/2025 AA Direct COM 23,432 $97.94 $2,294,930.08 74,340 Oosthuizen Johannes Jacobus President, U.S. Market 01/27/2025 AA Direct COM 8,664 $97.94 $848,552.16 32,607 Smart Dalton SVP Fin. - Global Controller 01/27/2025 AA Direct COM 2,586 $97.94 $253,272.84 7,014 Williams David Michael EVP,Chief Info&Digital Officer 01/27/2025 AA Direct COM 10,246 $97.94 $1,003,493.24 30,123 Zachary Jennifer EVP, General Counsel 01/27/2025 AA Direct COM 25,423 $97.94 $2,489,928.62 55,286
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Guindo Chirfi Chief Marketing Officer 02/12/2026 DS Direct COM 10,000 $121.46 $1,214,562.00 60,615 Li Dean Y Executive VP & President, MRL 02/10/2026 DS Direct COM 10,235 $117.52 $1,202,843.81 92,035 Zachary Jennifer EVP, General Counsel 02/09/2026 DS Direct COM 38,835 $119.15 $4,627,275.69 68,916 Zachary Jennifer EVP, General Counsel 02/09/2026 DS Direct COM 56,792 $119.15 $6,766,891.74 68,916 Zachary Jennifer EVP, General Counsel 02/09/2026 DS Direct COM 25,946 $119.15 $3,091,522.98 68,916 Guindo Chirfi Chief Marketing Officer 02/09/2026 DS Direct COM 10,000 $118.41 $1,184,101.00 70,615 Deluca Richard R. EVP&Pres, Merck Animal Heallth 02/06/2026 DS Direct COM 37,685 $120.92 $4,557,024.71 160,174 Oosthuizen Johannes Jacobus President, U.S. Market 02/06/2026 DS Direct COM 15,000 $121.87 $1,827,991.50 21,197 Williams David Michael EVP,Chief Info&Digital Officer 02/06/2026 DS Direct COM 5,000 $121.91 $609,525.00 30,838 Guindo Chirfi Chief Marketing Officer 02/05/2026 DS Direct COM 20,000 $121.88 $2,437,676.00 80,615 Davis Robert M Chairman, CEO & President 02/04/2026 DS Direct COM 32,462 $118.35 $3,841,919.90 443,602 Davis Robert M Chairman, CEO & President 02/04/2026 DS Direct COM 14,972 $117.38 $1,757,407.37 476,064 Li Dean Y Executive VP & President, MRL 02/04/2026 DS Direct COM 15,087 $118.77 $1,791,824.15 102,270 Litchfield Caroline EVP & CFO 02/04/2026 DS Direct COM 41,997 $119.61 $5,023,311.57 90,192 Smart Dalton E. Iii SVP Fin. - Global Controller 02/04/2026 DS Direct COM 2,400 $119.68 $287,220.00 8,205 Smart Dalton E. Iii SVP Fin. - Global Controller 02/04/2026 DS Direct COM 4,000 $119.68 $478,700.00 10,605 Downing Cristal N Chief Comm. & Public Afrs Ofcr 11/10/2025 DS Direct COM 7,085 $87.00 $616,395.00 0 Williams David Michael EVP,Chief Info&Digital Officer 11/03/2025 DS Direct COM 8,614 $83.59 $720,039.95 24,578 Guindo Chirfi Chief Marketing Officer 08/04/2025 DF Direct COM 18,175 $79.29 $1,441,095.75 89,234 Williams David Michael EVP,Chief Info&Digital Officer 08/04/2025 DF Direct COM 8,432 $79.29 $668,573.28 33,013 Smart Dalton E. Iii SVP Fin. - Global Controller 05/03/2025 DF Direct COM 588 $83.18 $48,909.84 9,539 Smart Dalton E. Iii SVP Fin. - Global Controller 05/03/2025 DF Direct COM 256 $83.18 $21,294.08 8,595 Romanelli Joseph President, Human Health Int?l 05/02/2025 DF Direct COM 1,115 $83.26 $92,834.90 22,946 Smart Dalton E. Iii SVP Fin. - Global Controller 05/02/2025 DF Direct COM 131 $83.26 $10,907.06 8,333 Larson Betty D EVP, Chief HR Officer 04/30/2025 DF Direct COM 5,153 $84.71 $436,510.63 6,197
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Zachary Jennifer EVP, General Counsel 02/09/2026 AM Direct COM 38,835 $119.15 $4,627,275.69 107,751 Zachary Jennifer EVP, General Counsel 02/09/2026 AM Direct COM 56,792 $119.15 $6,766,891.74 125,708 Zachary Jennifer EVP, General Counsel 02/09/2026 AM Direct COM 25,946 $119.15 $3,091,522.98 94,862 Williams David Michael EVP,Chief Info&Digital Officer 02/06/2026 AM Direct COM 5,000 $77.62 $388,100.00 35,838 Li Dean Y Executive VP & President, MRL 02/04/2026 AM Direct COM 15,087 $56.04 $845,475.48 117,357 Litchfield Caroline EVP & CFO 02/04/2026 AM Direct COM 41,997 $53.06 $2,228,360.82 132,189 Smart Dalton E. Iii SVP Fin. - Global Controller 02/04/2026 AM Direct COM 4,000 $62.07 $248,280.00 14,605 Guindo Chirfi Chief Marketing Officer 08/04/2025 AM Direct COM 36,903 $79.29 $2,926,038.87 107,409 Williams David Michael EVP,Chief Info&Digital Officer 08/04/2025 AM Direct COM 17,119 $79.29 $1,357,365.51 41,445 Smart Dalton E. Iii SVP Fin. - Global Controller 05/03/2025 AM Direct COM 1,532 $83.18 $127,431.76 10,127 Smart Dalton E. Iii SVP Fin. - Global Controller 05/03/2025 AM Direct COM 518 $83.18 $43,087.24 8,851 Romanelli Joseph President, Human Health Int?l 05/02/2025 AM Direct COM 2,262 $83.26 $188,334.12 24,061 Smart Dalton E. Iii SVP Fin. - Global Controller 05/02/2025 AM Direct COM 381 $83.26 $31,722.06 8,464 Larson Betty D EVP, Chief HR Officer 04/30/2025 AM Direct COM 11,350 $84.71 $961,458.50 11,350 Romanelli Joseph President, Human Health Int?l 04/30/2025 AM Direct COM 2,063 $84.71 $174,756.73 22,816 Smart Dalton E. Iii SVP Fin. - Global Controller 04/30/2025 AM Direct COM 464 $84.71 $39,305.44 8,242 Smart Dalton E. Iii SVP Fin. - Global Controller 04/25/2025 AM Direct COM 5,000 $58.08 $290,400.00 12,040 Oosthuizen Johannes Jacobus President, U.S. Market 02/08/2025 AM Direct COM 13,002 $87.28 $1,134,814.56 45,609 Guindo Chirfi Chief Marketing Officer 08/05/2024 AM Direct COM 36,901 $115.20 $4,250,995.20 57,782 Oosthuizen Johannes Jacobus President, U.S. Market 05/04/2024 AM Direct COM 912 $127.51 $116,289.12 24,271 Klobuchar Michael A EVP - Chief Strategy Officer 05/04/2024 AM Direct COM 887 $127.51 $113,101.37 24,058 Deluca Richard R. EVP&Pres, Merck Animal Heallth 05/04/2024 AM Direct COM 27,126 $127.51 $3,458,836.26 163,720 Smart Dalton SVP Fin. - Global Controller 05/04/2024 AM Direct COM 612 $127.51 $78,036.12 4,730 Smart Dalton SVP Fin. - Global Controller 05/03/2024 AM Direct COM 1,530 $128.26 $196,237.80 4,708 Smart Dalton SVP Fin. - Global Controller 05/03/2024 AM Direct COM 516 $128.26 $66,182.16 3,433
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Transaction Type Key A = Acquired, D = Disposed A = Grant, award or other acquisition pursuant to Rule 16b-3(d)
C = Conversion of derivative security |
D = Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e) |
E = Expiration of short derivative position |
F = Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. |
G = Gift |
H = Expiration (or cancellation) of long derivative position with value received |
I = Discretionary transaction in accordance with Rule 16b-3(f) |
J = Other |
L = Small acquisition under Rule 16a-6 |
M = Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 |
O = Exercise of out-of-the-money derivative security |
P = Open market or private purchase |
S = Open market or private sale |
U = Disposition pursuant to a tender of shares in a change of control transaction |
W = Acquisition or disposition by will or the laws of descent and distribution |
X = Exercise of in-the-money or at-the-money derivative security |
Z = Deposit into or withdrawal from voting trust
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