Insider
Date
Role
Action
Shares
Price
Amount
Chirfi Guindo
13 Aug 2026
EVP, Access, Policy & Comms
Sell
10,000
$135.00
$1.35M
Richard R. DeLuca
12 Aug 2026
EVP&Pres, Merck Animal Heallth
Sell
600
$132.04
$79.22K
Richard R. DeLuca
12 Aug 2026
EVP&Pres, Merck Animal Heallth
Sell
11,099
$131.61
$1.46M
Richard R. DeLuca
11 Aug 2026
EVP&Pres, Merck Animal Heallth
Sell
5,427
$132.35
$718.26K
Richard R. DeLuca
11 Aug 2026
EVP&Pres, Merck Animal Heallth
Sell
7,410
$131.33
$973.16K
Richard R. DeLuca
10 Aug 2026
EVP&Pres, Merck Animal Heallth
Sell
20,784
$130.43
$2.71M
Chirfi Guindo
6 Aug 2026
EVP, Access, Policy & Comms
Sell
15,000
$131.00
$1.97M
Richard R. DeLuca
6 Aug 2026
EVP&Pres, Merck Animal Heallth
Sell
300
$131.02
$39.31K
Richard R. DeLuca
6 Aug 2026
EVP&Pres, Merck Animal Heallth
Sell
4,945
$130.23
$643.99K
Richard R. DeLuca
6 Aug 2026
EVP&Pres, Merck Animal Heallth
Sell
805
$131.02
$105.47K
Chirfi Guindo
12 Feb 2026
Chief Marketing Officer
Sell
10,000
$121.46
$1.21M
Dean Y Li
10 Feb 2026
Executive VP & President, MRL
Sell
10,235
$117.52
$1.20M
Chirfi Guindo
9 Feb 2026
Chief Marketing Officer
Sell
10,000
$118.41
$1.18M
Richard R. DeLuca
6 Feb 2026
EVP&Pres, Merck Animal Heallth
Sell
37,685
$120.92
$4.56M
Johannes Jacobus Oosthuizen
6 Feb 2026
President, U.S. Market
Sell
15,000
$121.87
$1.83M
Chirfi Guindo
5 Feb 2026
Chief Marketing Officer
Sell
20,000
$121.88
$2.44M
Robert M Davis
4 Feb 2026
Chairman, CEO & President
Sell
32,462
$118.35
$3.84M
Robert M Davis
4 Feb 2026
Chairman, CEO & President
Sell
14,972
$117.38
$1.76M
Cristal N Downing
10 Nov 2025
Chief Comm. & Public Afrs Ofcr
Sell
7,085
$87.00
$616.40K
David Michael Williams
3 Nov 2025
EVP,Chief Info&Digital Officer
Sell
8,614
$83.59
$720.04K
Johannes Jacobus Oosthuizen
19 Feb 2025
President, U.S. Market
Sell
8,500
$84.09
$714.74K
David Michael Williams
13 Feb 2025
EVP,Chief Info&Digital Officer
Sell
6,000
$85.34
$512.06K
Cristal N Downing
6 Feb 2025
Chief Comm. & Public Afrs Ofcr
Sell
2,361
$88.76
$209.55K
Joseph Romanelli
13 Feb 2024
President, Human Health Int?l
Sell
1,000
$124.89
$124.89K
David Michael Williams
7 Feb 2024
EVP,Chief Info&Digital Officer
Sell
1,451
$127.57
$185.11K
Johannes Jacobus Oosthuizen
9 Nov 2023
President, U.S. Market
Sell
2,081
$102.38
$213.06K
Richard R. DeLuca
8 Nov 2023
EVP&Pres, Merck Animal Heallth
Sell
43,823
$105.03
$4.60M
Steven Mizell
14 Aug 2023
EVP, Chief HR Officer
Sell
4,250
$109.01
$463.29K
Steven Mizell
3 Aug 2023
EVP, Chief HR Officer
Sell
4,500
$105.49
$474.70K
Joseph Romanelli
2 Aug 2023
President, Human Health Int?l
Sell
indirect
59
$107.37
$6.33K
Joseph Romanelli
2 Aug 2023
President, Human Health Int?l
Sell
30
$107.37
$3.22K
Jennifer Zachary
4 May 2023
EVP, General Counsel
Sell
19,141
$117.59
$2.25M
Joseph Romanelli
24 Mar 2023
President, Human Health Int?l
Sell
35
$104.65
$3.66K
Joseph Romanelli
15 Feb 2023
President, Human Health Int?l
Sell
5,000
$108.22
$541.10K
Steven Mizell
13 Feb 2023
EVP, Chief HR Officer
Sell
1,815
$109.10
$198.02K
Steven Mizell
9 Feb 2023
EVP, Chief HR Officer
Sell
5,000
$107.00
$535.01K
Steven Mizell
6 Feb 2023
EVP, Chief HR Officer
Sell
4,436
$104.25
$462.47K
Johannes Jacobus Oosthuizen
9 Nov 2022
President, U.S. Market
Sell
1,795
$103.21
$185.26K
Johannes Jacobus Oosthuizen
28 Oct 2022
President, U.S. Market
Sell
3,633
$100.21
$364.06K
Kenneth C Frazier
9 Nov 2020
Chairman, President & CEO
Sell
144,866
$81.74
$11.84M
Kenneth C Frazier
9 Nov 2020
Chairman, President & CEO
Sell
135,134
$81.08
$10.96M
Sanat Chattopadhyay
13 Aug 2020
Exe V-P & Pres. MMD
Sell
10,380
$83.01
$861.68K
