Merck & Co Inc (MRK)

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Recent insider trading activity at Merck & Co Inc. primarily consists of sell transactions and proposed sales by senior executives, including the Chief Marketing Officer and EVP, General Counsel. The most recent trading occurred on February 12, 2026. These transactions represent significant value and share volume.

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Ticker: MRK Exchange: NYS

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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

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Trades

Guindo Chirfi

Chief Marketing Officer

1 sale — total 1,214,562 USD

Sale 12 Feb 2026

Value US$286,323.83 | Price 447.53 | Shares 23,215

DEAN LI

Officer

1 sale — total 1,202,844 USD

Proposed sale 10 Feb 2026

Value US$2,507,027.43 | Price 194.61 | Shares 77,189

Li Dean Y

Executive VP & President, MRL

1 sale — total 1,202,844 USD

Sale 10 Feb 2026

Value US$1,202,843.81 | Price 117.52 | Shares 10,235

CHIRFI GUINDO

Officer

2 sales — total 4,736,404 USD

Proposed sale 9 Feb 2026

Value US$2,368,202.00 | Price 118.41 | Shares 20,000

Proposed sale 9 Feb 2026

Value US$2,368,202.00 | Price 118.41 | Shares 20,000

JENNIFER ZACHARY

Officer

1 sale — total 14,485,690 USD

Proposed sale 9 Feb 2026

Value US$14,485,690.41 | Price 119.15 | Shares 121,573

Zachary Jennifer

EVP, General Counsel

3 sales — total 14,485,690 USD

Sale 9 Feb 2026

Value US$4,627,275.69 | Price 119.15 | Shares 38,835

Sale 9 Feb 2026

Value US$6,766,891.74 | Price 119.15 | Shares 56,792

Sale 9 Feb 2026

Value US$3,091,522.98 | Price 119.15 | Shares 25,946

Guindo Chirfi

Chief Marketing Officer

1 sale — total 1,184,101 USD

Sale 9 Feb 2026

Value US$1,184,101.00 | Price 118.41 | Shares 10,000

RICHARD ROBERT DELUCA JR.

Officer

1 sale — total 4,557,025 USD

Proposed sale 6 Feb 2026

Value US$4,557,024.71 | Price 120.92 | Shares 37,685

DAVID WILLIAMS

Officer

1 sale — total 609,525 USD

Proposed sale 6 Feb 2026

Value US$609,525.00 | Price 121.91 | Shares 5,000

JOHANNES JACOBUS OOSTHUIZEN

Officer

1 sale — total 1,827,992 USD

Proposed sale 6 Feb 2026

Value US$1,827,991.50 | Price 121.87 | Shares 15,000

Williams David Michael

EVP,Chief Info&Digital Officer

1 sale — total 609,525 USD

Sale 6 Feb 2026

Value US$609,525.00 | Price 121.91 | Shares 5,000

Oosthuizen Johannes Jacobus

President, U.S. Market

1 sale — total 1,827,992 USD

Sale 6 Feb 2026

Value US$1,827,991.50 | Price 121.87 | Shares 15,000

DeLuca Richard R.

EVP&Pres, Merck Animal Heallth

1 sale — total 4,557,025 USD

Sale 6 Feb 2026

Value US$4,557,024.71 | Price 120.92 | Shares 37,685

Guindo Chirfi

Chief Marketing Officer

1 sale — total 2,437,676 USD

Sale 5 Feb 2026

Value US$2,437,676.00 | Price 121.88 | Shares 20,000

CHIRFI GUINDO

Officer

1 sale — total 2,437,676 USD

Proposed sale 5 Feb 2026

Value US$2,437,676.00 | Price 121.88 | Shares 20,000

Smart Dalton E. III

SVP Fin. - Global Controller

2 sales — total 765,920 USD

Sale 4 Feb 2026

Value US$287,220.00 | Price 119.68 | Shares 2,400

Sale 4 Feb 2026

Value US$478,700.00 | Price 119.68 | Shares 4,000

Li Dean Y

Executive VP & President, MRL

1 sale — total 1,791,824 USD

Sale 4 Feb 2026

Value US$1,791,824.15 | Price 118.77 | Shares 15,087

Litchfield Caroline

EVP & CFO

1 sale — total 5,023,312 USD

Sale 4 Feb 2026

Value US$5,023,311.57 | Price 119.61 | Shares 41,997

Davis Robert M

Chairman, CEO & President

2 sales — total 5,599,327 USD

Sale 4 Feb 2026

Value US$3,841,919.90 | Price 118.35 | Shares 32,462

Sale 4 Feb 2026

Value US$1,757,407.37 | Price 117.38 | Shares 14,972

DALTON SMART

Officer

1 sale — total 765,920 USD

Proposed sale 4 Feb 2026

Value US$765,920.00 | Price 119.68 | Shares 6,400

ROBERT M. DAVIS

Officer

1 sale — total 5,598,137 USD

Proposed sale 4 Feb 2026

Value US$5,598,136.96 | Price 118.02 | Shares 47,434

DEAN LI

Officer

1 sale — total 1,791,824 USD

Proposed sale 4 Feb 2026

Value US$1,791,824.15 | Price 118.77 | Shares 15,087

CAROLINE A LITCHFIELD

Officer

1 sale — total 5,023,312 USD

Proposed sale 4 Feb 2026

Value US$5,023,311.57 | Price 119.61 | Shares 41,997

Downing Cristal N

Chief Comm. & Public Afrs Ofcr

1 sale — total 616,395 USD

Sale 10 Nov 2025

Value US$616,395.00 | Price 87.00 | Shares 7,085

CRISTAL DOWNING

Officer

1 sale — total 616,395 USD

Proposed sale 10 Nov 2025

Value US$616,395.00 | Price 87.00 | Shares 7,085

Williams David Michael

EVP,Chief Info&Digital Officer

1 sale — total 720,040 USD

Sale 3 Nov 2025

Value US$720,039.95 | Price 83.59 | Shares 8,614

DAVID WILLIAMS

Officer

1 sale — total 720,040 USD

Proposed sale 3 Nov 2025

Value US$720,039.95 | Price 83.59 | Shares 8,614

Smart Dalton E. III

SVP Fin. - Global Controller

1 sale — total 352,723 USD

Sale 25 Apr 2025

Value US$352,723.12 | Price 82.76 | Shares 4,262

DALTON SMART

Officer

1 sale — total 352,723 USD

Proposed sale 25 Apr 2025

Value US$352,723.12 | Price 82.76 | Shares 4,262

Oosthuizen Johannes Jacobus

President, U.S. Market

1 sale — total 714,745 USD

Sale 19 Feb 2025

Value US$714,744.60 | Price 84.09 | Shares 8,500

JOHANNES JACOBUS OOSTHUIZEN

Officer

1 sale — total 714,745 USD

Proposed sale 19 Feb 2025

Value US$714,744.60 | Price 84.09 | Shares 8,500

DAVID WILLIAMS

Officer

1 sale — total 512,057 USD

Proposed sale 13 Feb 2025

Value US$512,056.80 | Price 85.34 | Shares 6,000

Williams David Michael

EVP,Chief Info&Digital Officer

1 sale — total 512,057 USD

Sale 13 Feb 2025

Value US$512,056.80 | Price 85.34 | Shares 6,000

THULIN INGE G

1 purchase — total 250,000 USD

Buy 6 Feb 2025

Value US$249,999.98 | Price 88.25 | Shares 2,833

Downing Cristal N

Chief Comm. & Public Afrs Ofcr

1 sale — total 209,551 USD

Sale 6 Feb 2025

Value US$209,550.79 | Price 88.76 | Shares 2,361

CRISTAL DOWNING

Officer

1 sale — total 209,551 USD

Proposed sale 6 Feb 2025

Value US$209,550.79 | Price 88.76 | Shares 2,361

BAKER DOUGLAS M JR

1 purchase — total 1,327,500 USD

Buy 5 Feb 2025

Value US$1,327,500.00 | Price 88.50 | Shares 15,000

STEVEN C. MIZELL

Officer

1 sale — total 7,649,010 USD

Proposed sale 6 May 2024

Value US$7,649,010.00 | Price 127.48 | Shares 60,000

Litchfield Caroline

EVP & CFO

1 sale — total 4,805,521 USD

Sale 14 Feb 2024

Value US$4,805,520.50 | Price 125.50 | Shares 38,291

Davis Robert M

Chairman, CEO & President

1 sale — total 10,661,574 USD

Sale 14 Feb 2024

Value US$10,661,573.89 | Price 125.40 | Shares 85,021

RITA KARACHUN

Officer

1 sale — total 3,314,328 USD

Proposed sale 14 Feb 2024

Value US$3,314,327.55 | Price 125.53 | Shares 26,402

CAROLINE A LITCHFIELD

Officer

1 sale — total 4,805,521 USD

Proposed sale 14 Feb 2024

Value US$4,805,520.50 | Price 125.50 | Shares 38,291

ROBERT M. DAVIS

Officer

1 sale — total 10,661,574 USD

Proposed sale 14 Feb 2024

Value US$10,661,573.89 | Price 125.40 | Shares 85,021

Davis Robert M

Chairman, CEO & President

2 sales — total 18,877,424 USD

Sale 13 Feb 2024

Value US$3,200,277.45 | Price 126.37 | Shares 25,324

Sale 13 Feb 2024

Value US$15,677,146.74 | Price 125.74 | Shares 124,676

Romanelli Joseph

President, Human Health Int?l

1 sale — total 124,888 USD

Sale 13 Feb 2024

Value US$124,887.90 | Price 124.89 | Shares 1,000

JOSEPH ROMANELLI

Officer

1 sale — total 124,888 USD

Proposed sale 13 Feb 2024

Value US$124,887.90 | Price 124.89 | Shares 1,000

ROBERT M. DAVIS

Officer

1 sale — total 18,872,130 USD

Proposed sale 13 Feb 2024

Value US$18,872,130.00 | Price 125.81 | Shares 150,000

Li Dean Y

Executive VP & President, MRL

1 sale — total 1,845,083 USD

Sale 9 Feb 2024

Value US$1,845,083.36 | Price 125.50 | Shares 14,702

DEAN LI

Officer

1 sale — total 1,845,083 USD

Proposed sale 9 Feb 2024

Value US$1,845,083.36 | Price 125.50 | Shares 14,702

Williams David Michael

EVP,Chief Info&Digital Officer

1 sale — total 185,108 USD

Sale 7 Feb 2024

Value US$185,108.28 | Price 127.57 | Shares 1,451

DAVID WILLIAMS

Officer

1 sale — total 185,108 USD

Proposed sale 7 Feb 2024

Value US$185,108.28 | Price 127.57 | Shares 1,451

Oosthuizen Johannes Jacobus

President, U.S. Market

1 sale — total 2,411,111 USD

Sale 2 Feb 2024

Value US$2,411,110.82 | Price 127.18 | Shares 18,959

JOHANNES JACOBUS OOSTHUIZEN

Officer

1 sale — total 2,411,111 USD

Proposed sale 2 Feb 2024

Value US$2,411,110.83 | Price 127.18 | Shares 18,959

JENNIFER ZACHARY

Officer

1 sale — total 6,284,779 USD

Proposed sale 2 Feb 2024

Value US$6,284,779.13 | Price 126.97 | Shares 49,499

STEVEN C. MIZELL

Officer

1 sale — total 6,420,349 USD

Proposed sale 2 Feb 2024

Value US$6,420,349.48 | Price 126.65 | Shares 50,694

MIZELL STEVEN

EVP, Chief HR Officer

1 sale — total 6,420,349 USD

Sale 2 Feb 2024

Value US$6,420,349.48 | Price 126.65 | Shares 50,694

Zachary Jennifer

EVP, General Counsel

1 sale — total 6,284,779 USD

Sale 2 Feb 2024

Value US$6,284,779.13 | Price 126.97 | Shares 49,499

Oosthuizen Johannes Jacobus

President, U.S. Market

1 sale — total 213,061 USD

Sale 9 Nov 2023

Value US$213,061.31 | Price 102.38 | Shares 2,081

JOHANNES JACOBUS OOSTHUIZEN

Officer

1 sale — total 213,061 USD

Proposed sale 9 Nov 2023

Value US$213,061.31 | Price 102.38 | Shares 2,081

DeLuca Richard R.

EVP&Pres, Merck Animal Heallth

1 sale — total 4,602,668 USD

Sale 8 Nov 2023

Value US$4,602,668.34 | Price 105.03 | Shares 43,823

RICHARD ROBERT DELUCA JR.

Officer

1 sale — total 4,602,668 USD

Proposed sale 8 Nov 2023

Value US$4,602,668.34 | Price 105.03 | Shares 43,823

MIZELL STEVEN

EVP, Chief HR Officer

1 sale — total 463,293 USD

Sale 14 Aug 2023

Value US$463,292.50 | Price 109.01 | Shares 4,250

STEVEN C. MIZELL

Officer

1 sale — total 463,293 USD

Proposed sale 14 Aug 2023

Value US$463,292.50 | Price 109.01 | Shares 4,250

MIZELL STEVEN

EVP, Chief HR Officer

1 sale — total 474,701 USD

Sale 3 Aug 2023

Value US$474,700.95 | Price 105.49 | Shares 4,500

STEVEN C. MIZELL

Officer

1 sale — total 474,701 USD

Proposed sale 3 Aug 2023

Value US$474,700.95 | Price 105.49 | Shares 4,500

Romanelli Joseph

President, Human Health Int?l

2 sales — total 9,556 USD

Sale 2 Aug 2023

Value US$6,334.89 | Price 107.37 | Shares 59

Sale 2 Aug 2023

Value US$3,221.13 | Price 107.37 | Shares 30

Karachun Rita A

Sr. VP Fince-Global Controller

1 sale — total 1,865,843 USD

Sale 4 May 2023

Value US$1,865,842.72 | Price 117.53 | Shares 15,875

Zachary Jennifer

EVP, General Counsel

1 sale — total 2,250,834 USD

Sale 4 May 2023

Value US$2,250,834.21 | Price 117.59 | Shares 19,141

Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	B/S Transaction type	Insider and/or position	Nb. shares Price Value	Number of shares	Price	Value
2026-02-12	2026-02-12	S Sale	2.9 Guindo Chirfi Chief Marketing Officer Officer	23,215 +19.0% 447.53 US$286,324	23,215 +19.0%	447.53	US$286,324
2026-02-10	2026-02-10	PrS Proposed sale	2.6 DEAN LI Officer Officer	77,189 194.61 US$2,507,027	77,189	194.61	US$2,507,027
2026-02-10	2026-02-10	S Sale	2.6 Li Dean Y Executive VP & President, MRL Officer	47,202 -32.3% 30.57 US$626,970	47,202 -32.3%	30.57	US$626,970
2026-02-13	2026-02-09	PrS Proposed sale	2.9 CHIRFI GUINDO Officer Officer	20,000 118.41 US$2,368,202	20,000	118.41	US$2,368,202
2026-02-09	2026-02-09	PrS Proposed sale	2.5 JENNIFER ZACHARY Officer Officer	121,573 119.15 US$14,485,690	121,573	119.15	US$14,485,690
2026-02-09	2026-02-09	PrS Proposed sale	2.9 CHIRFI GUINDO Officer Officer	20,000 118.41 US$2,368,202	20,000	118.41	US$2,368,202
2026-02-09	2026-02-09	S Sale	2.5 Zachary Jennifer EVP, General Counsel Officer	38,835 -36.0% 119.15 US$4,627,276	38,835 -36.0%	119.15	US$4,627,276
2026-02-09	2026-02-09	S Sale	2.5 Zachary Jennifer EVP, General Counsel Officer	56,792 -45.2% 119.15 US$6,766,892	56,792 -45.2%	119.15	US$6,766,892
2026-02-09	2026-02-09	S Sale	2.5 Zachary Jennifer EVP, General Counsel Officer	25,946 -27.4% 119.15 US$3,091,523	25,946 -27.4%	119.15	US$3,091,523
2026-02-09	2026-02-09	S Sale	2.9 Guindo Chirfi Chief Marketing Officer Officer	10,000 -12.4% 118.41 US$1,184,101	10,000 -12.4%	118.41	US$1,184,101
2026-02-06	2026-02-06	PrS Proposed sale	3.3 RICHARD ROBERT DELUCA JR. Officer Officer	37,685 120.92 US$4,557,025	37,685	120.92	US$4,557,025
2026-02-06	2026-02-06	PrS Proposed sale	2.7 DAVID WILLIAMS Officer Officer	5,000 121.91 US$609,525	5,000	121.91	US$609,525
2026-02-06	2026-02-06	PrS Proposed sale	2.5 JOHANNES JACOBUS OOSTHUIZEN Officer Officer	15,000 121.87 US$1,827,992	15,000	121.87	US$1,827,992
2026-02-06	2026-02-06	S Sale	2.7 Williams David Michael EVP,Chief Info&Digital Officer Officer	5,000 -14.0% 121.91 US$609,525	5,000 -14.0%	121.91	US$609,525
2026-02-06	2026-02-06	S Sale	2.5 Oosthuizen Johannes Jacobus President, U.S. Market Officer	15,000 -41.4% 121.87 US$1,827,992	15,000 -41.4%	121.87	US$1,827,992
2026-02-06	2026-02-06	S Sale	3.3 DeLuca Richard R. EVP&Pres, Merck Animal Heallth Officer	37,685 -19.0% 120.92 US$4,557,025	37,685 -19.0%	120.92	US$4,557,025
2026-02-06	2026-02-05	S Sale	2.9 Guindo Chirfi Chief Marketing Officer Officer	20,000 -19.9% 121.88 US$2,437,676	20,000 -19.9%	121.88	US$2,437,676
2026-02-05	2026-02-05	PrS Proposed sale	2.9 CHIRFI GUINDO Officer Officer	20,000 121.88 US$2,437,676	20,000	121.88	US$2,437,676
2026-02-06	2026-02-04	S Sale	2.6 Smart Dalton E. III SVP Fin. - Global Controller Officer	2,400 -22.6% 119.68 US$287,220	2,400 -22.6%	119.68	US$287,220
2026-02-06	2026-02-04	S Sale	2.6 Smart Dalton E. III SVP Fin. - Global Controller Officer	4,000 -27.4% 119.68 US$478,700	4,000 -27.4%	119.68	US$478,700
2026-02-06	2026-02-04	S Sale	2.6 Li Dean Y Executive VP & President, MRL Officer	15,087 -12.9% 118.77 US$1,791,824	15,087 -12.9%	118.77	US$1,791,824
2026-02-06	2026-02-04	S Sale	3.0 Litchfield Caroline EVP & CFO Officer	41,997 -31.8% 119.61 US$5,023,312	41,997 -31.8%	119.61	US$5,023,312
2026-02-06	2026-02-04	S Sale	2.9 Davis Robert M Chairman, CEO & President Executive Director	32,462 -6.8% 118.35 US$3,841,920	32,462 -6.8%	118.35	US$3,841,920
2026-02-06	2026-02-04	S Sale	2.9 Davis Robert M Chairman, CEO & President Executive Director	14,972 -3.0% 117.38 US$1,757,407	14,972 -3.0%	117.38	US$1,757,407
2026-02-04	2026-02-04	PrS Proposed sale	2.6 DALTON SMART Officer Officer	6,400 119.68 US$765,920	6,400	119.68	US$765,920
2026-02-04	2026-02-04	PrS Proposed sale	2.9 ROBERT M. DAVIS Officer Officer	47,434 118.02 US$5,598,137	47,434	118.02	US$5,598,137
2026-02-04	2026-02-04	PrS Proposed sale	2.6 DEAN LI Officer Officer	15,087 118.77 US$1,791,824	15,087	118.77	US$1,791,824
2026-02-04	2026-02-04	PrS Proposed sale	3.0 CAROLINE A LITCHFIELD Officer Officer	41,997 119.61 US$5,023,312	41,997	119.61	US$5,023,312
2025-11-12	2025-11-10	S Sale	1.3 Downing Cristal N Chief Comm. & Public Afrs Ofcr Officer	7,085 -100.0% 87.00 US$616,395	7,085 -100.0%	87.00	US$616,395
2025-11-10	2025-11-10	PrS Proposed sale	1.3 CRISTAL DOWNING Officer Officer	7,085 87.00 US$616,395	7,085	87.00	US$616,395
2025-11-04	2025-11-03	S Sale	2.7 Williams David Michael EVP,Chief Info&Digital Officer Officer	8,614 -26.0% 83.59 US$720,040	8,614 -26.0%	83.59	US$720,040
2025-11-03	2025-11-03	PrS Proposed sale	2.7 DAVID WILLIAMS Officer Officer	8,614 83.59 US$720,040	8,614	83.59	US$720,040
2025-04-29	2025-04-25	S Sale	2.6 Smart Dalton E. III SVP Fin. - Global Controller Officer	4,262 -35.4% 82.76 US$352,723	4,262 -35.4%	82.76	US$352,723
2025-04-25	2025-04-25	PrS Proposed sale	2.6 DALTON SMART Officer Officer	4,262 82.76 US$352,723	4,262	82.76	US$352,723
2025-02-20	2025-02-19	S Sale	2.5 Oosthuizen Johannes Jacobus President, U.S. Market Officer	8,500 -21.7% 84.09 US$714,745	8,500 -21.7%	84.09	US$714,745
2025-02-19	2025-02-19	PrS Proposed sale	2.5 JOHANNES JACOBUS OOSTHUIZEN Officer Officer	8,500 84.09 US$714,745	8,500	84.09	US$714,745
2025-02-13	2025-02-13	PrS Proposed sale	2.7 DAVID WILLIAMS Officer Officer	6,000 85.34 US$512,057	6,000	85.34	US$512,057
2025-02-13	2025-02-13	S Sale	2.7 Williams David Michael EVP,Chief Info&Digital Officer Officer	6,000 -19.9% 85.34 US$512,057	6,000 -19.9%	85.34	US$512,057
2025-02-07	2025-02-06	B Purchase	3.5 THULIN INGE G Non-Executive Director	2,833 +2832.9% 88.25 US$250,000	2,833 +2832.9%	88.25	US$250,000
2025-02-07	2025-02-06	S Sale	1.3 Downing Cristal N Chief Comm. & Public Afrs Ofcr Officer	2,361 -25.0% 88.76 US$209,551	2,361 -25.0%	88.76	US$209,551
2025-02-06	2025-02-06	PrS Proposed sale	1.3 CRISTAL DOWNING Officer Officer	2,361 88.76 US$209,551	2,361	88.76	US$209,551
2025-02-07	2025-02-05	B Purchase	3.6 BAKER DOUGLAS M JR Non-Executive Director	15,000 +1500.0% 88.50 US$1,327,500	15,000 +1500.0%	88.50	US$1,327,500
2024-05-06	2024-05-06	PrS Proposed sale	2.8 STEVEN C. MIZELL Officer Officer	60,000 127.48 US$7,649,010	60,000	127.48	US$7,649,010
2024-02-15	2024-02-14	S Sale	3.0 Litchfield Caroline EVP & CFO Officer	38,291 -42.9% 125.50 US$4,805,520	38,291 -42.9%	125.50	US$4,805,520
2024-02-15	2024-02-14	S Sale	2.9 Davis Robert M Chairman, CEO & President Executive Director	85,021 -19.6% 125.40 US$10,661,574	85,021 -19.6%	125.40	US$10,661,574
2024-02-14	2024-02-14	PrS Proposed sale	2.8 RITA KARACHUN Officer Officer	26,402 125.53 US$3,314,328	26,402	125.53	US$3,314,328
2024-02-14	2024-02-14	PrS Proposed sale	3.0 CAROLINE A LITCHFIELD Officer Officer	38,291 125.50 US$4,805,520	38,291	125.50	US$4,805,520
2024-02-14	2024-02-14	PrS Proposed sale	2.9 ROBERT M. DAVIS Officer Officer	85,021 125.40 US$10,661,574	85,021	125.40	US$10,661,574
2024-02-15	2024-02-13	S Sale	2.9 Davis Robert M Chairman, CEO & President Executive Director	25,324 -6.8% 126.37 US$3,200,277	25,324 -6.8%	126.37	US$3,200,277
2024-02-15	2024-02-13	S Sale	2.9 Davis Robert M Chairman, CEO & President Executive Director	124,676 -25.0% 125.74 US$15,677,147	124,676 -25.0%	125.74	US$15,677,147
2024-02-14	2024-02-13	S Sale	2.5 Romanelli Joseph President, Human Health Int?l Officer	1,000 -4.9% 124.89 US$124,888	1,000 -4.9%	124.89	US$124,888
2024-02-13	2024-02-13	PrS Proposed sale	2.5 JOSEPH ROMANELLI Officer Officer	1,000 124.89 US$124,888	1,000	124.89	US$124,888
2024-02-13	2024-02-13	PrS Proposed sale	2.9 ROBERT M. DAVIS Officer Officer	150,000 125.81 US$18,872,130	150,000	125.81	US$18,872,130
2024-02-12	2024-02-09	S Sale	2.6 Li Dean Y Executive VP & President, MRL Officer	14,702 -24.1% 125.50 US$1,845,083	14,702 -24.1%	125.50	US$1,845,083
2024-02-09	2024-02-09	PrS Proposed sale	2.6 DEAN LI Officer Officer	14,702 125.50 US$1,845,083	14,702	125.50	US$1,845,083
2024-02-08	2024-02-07	S Sale	2.7 Williams David Michael EVP,Chief Info&Digital Officer Officer	1,451 -6.8% 127.57 US$185,108	1,451 -6.8%	127.57	US$185,108
2024-02-07	2024-02-07	PrS Proposed sale	2.7 DAVID WILLIAMS Officer Officer	1,451 127.57 US$185,108	1,451	127.57	US$185,108
2024-02-05	2024-02-02	S Sale	2.5 Oosthuizen Johannes Jacobus President, U.S. Market Officer	18,959 -44.8% 127.18 US$2,411,111	18,959 -44.8%	127.18	US$2,411,111
2024-02-02	2024-02-02	PrS Proposed sale	2.5 JOHANNES JACOBUS OOSTHUIZEN Officer Officer	18,959 127.18 US$2,411,111	18,959	127.18	US$2,411,111
2024-02-02	2024-02-02	PrS Proposed sale	2.5 JENNIFER ZACHARY Officer Officer	49,499 126.97 US$6,284,779	49,499	126.97	US$6,284,779
2024-02-02	2024-02-02	PrS Proposed sale	2.8 STEVEN C. MIZELL Officer Officer	50,694 126.65 US$6,420,349	50,694	126.65	US$6,420,349
2024-02-02	2024-02-02	S Sale	2.8 MIZELL STEVEN EVP, Chief HR Officer Officer	50,694 -68.2% 126.65 US$6,420,349	50,694 -68.2%	126.65	US$6,420,349
2024-02-02	2024-02-02	S Sale	2.5 Zachary Jennifer EVP, General Counsel Officer	49,499 -63.0% 126.97 US$6,284,779	49,499 -63.0%	126.97	US$6,284,779
2023-11-13	2023-11-09	S Sale	2.5 Oosthuizen Johannes Jacobus President, U.S. Market Officer	2,081 -10.3% 102.38 US$213,061	2,081 -10.3%	102.38	US$213,061
2023-11-09	2023-11-09	PrS Proposed sale	2.5 JOHANNES JACOBUS OOSTHUIZEN Officer Officer	2,081 102.38 US$213,061	2,081	102.38	US$213,061
2023-11-09	2023-11-08	S Sale	3.3 DeLuca Richard R. EVP&Pres, Merck Animal Heallth Officer	43,823 -28.2% 105.03 US$4,602,668	43,823 -28.2%	105.03	US$4,602,668
2023-11-08	2023-11-08	PrS Proposed sale	3.3 RICHARD ROBERT DELUCA JR. Officer Officer	43,823 105.03 US$4,602,668	43,823	105.03	US$4,602,668
2023-08-15	2023-08-14	S Sale	2.8 MIZELL STEVEN EVP, Chief HR Officer Officer	4,250 -15.6% 109.01 US$463,292	4,250 -15.6%	109.01	US$463,292
2023-08-14	2023-08-14	PrS Proposed sale	2.8 STEVEN C. MIZELL Officer Officer	4,250 109.01 US$463,292	4,250	109.01	US$463,292
2023-08-04	2023-08-03	S Sale	2.8 MIZELL STEVEN EVP, Chief HR Officer Officer	4,500 -14.2% 105.49 US$474,701	4,500 -14.2%	105.49	US$474,701
2023-08-03	2023-08-03	PrS Proposed sale	2.8 STEVEN C. MIZELL Officer Officer	4,500 105.49 US$474,701	4,500	105.49	US$474,701
2023-08-03	2023-08-02	S Sale	2.5 Romanelli Joseph President, Human Health Int?l Officer	59 -100.0% 107.37 US$6,335	59 -100.0%	107.37	US$6,335
2023-08-03	2023-08-02	S Sale	2.5 Romanelli Joseph President, Human Health Int?l Officer	30 -0.1% 107.37 US$3,221	30 -0.1%	107.37	US$3,221
2023-05-05	2023-05-04	S Sale	2.8 Karachun Rita A Sr. VP Fince-Global Controller Officer	15,875 -25.8% 117.53 US$1,865,843	15,875 -25.8%	117.53	US$1,865,843
2023-05-05	2023-05-04	S Sale	2.5 Zachary Jennifer EVP, General Counsel Officer	19,141 -35.3% 117.59 US$2,250,834	19,141 -35.3%	117.59	US$2,250,834