Johannes Jacobus Oosthuizen

Insider Reports History

Location
Rahway, NJ
Signature
/s/ Kelly E. W. Grez, as attorney-in-fact for Johannes Oosthuizen
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by Johannes Jacobus Oosthuizen:

Company Role Class Num Shares Value Price $ Report Date Ownership
Merck & Co., Inc. President, U.S. Market Common Stock 21,197 $2,583,243 $121.87 06 Feb 2026 Direct
Merck & Co., Inc. President, U.S. Market Restricted Stock Unit 4,132 $0 $88.25 29 Apr 2025 Direct
Merck & Co., Inc. President, U.S. Market Stock Option (Right to Buy) 18,807 29 Apr 2025 Direct

Insider Reports Filed by Johannes Jacobus Oosthuizen

Symbol Company Period Transactions Value $ Form Type Role Filing Time
MRK Merck & Co., Inc. 06 Feb 2026 1 -$1,827,992 4 President, U.S. Market 06 Feb 2026, 16:15
MRK Merck & Co., Inc. 26 Jan 2026 1 +$539,792 4 President, U.S. Market 28 Jan 2026, 16:12
MRK Merck & Co., Inc. 29 Apr 2025 2 $0 4 President, U.S. Market 01 May 2025, 18:06
MRK Merck & Co., Inc. 19 Feb 2025 1 -$714,745 4 President, U.S. Market 20 Feb 2025, 16:01
MRK Merck & Co., Inc. 08 Feb 2025 3 +$575,873 4 President, U.S. Market 11 Feb 2025, 14:59
MRK Merck & Co., Inc. 27 Jan 2025 1 +$848,552 4 President, U.S. Market 29 Jan 2025, 18:23
MRK Merck & Co., Inc. 04 May 2024 3 +$58,910 4 President, U.S. Market 06 May 2024, 16:01
MRK Merck & Co., Inc. 30 Apr 2024 1 $0 4 President, U.S. Market 02 May 2024, 16:15
MRK Merck & Co., Inc. 02 Feb 2024 7 -$761,205 4 President, U.S. Market 05 Feb 2024, 16:01
MRK Merck & Co., Inc. 22 Jan 2024 1 +$374,174 4 President, U.S. Market 24 Jan 2024, 16:17
MRK Merck & Co., Inc. 09 Nov 2023 1 -$213,061 4 President, U.S. Market 13 Nov 2023, 07:36
MRK Merck & Co., Inc. 30 Oct 2023 3 +$47,708 4 President, U.S. Market 31 Oct 2023, 11:08
MRK Merck & Co., Inc. 04 May 2023 3 +$54,381 4 President, U.S. Market 05 May 2023, 17:09
MRK Merck & Co., Inc. 02 May 2023 1 $0 4 President, U.S. Market 04 May 2023, 18:01
MRK Merck & Co., Inc. 01 May 2023 3 +$50,691 4 President, U.S. Market 03 May 2023, 15:54
MRK Merck & Co., Inc. 23 Jan 2023 1 +$229,759 4 President, U.S. Market 25 Jan 2023, 16:38
MRK Merck & Co., Inc. 09 Nov 2022 1 -$185,262 4 President, U.S. Market 10 Nov 2022, 15:44
MRK Merck & Co., Inc. 07 Nov 2022 9 -$4,531,980 4 President, U.S. Market 07 Nov 2022, 15:09
MRK Merck & Co., Inc. 28 Oct 2022 4 -$317,408 4 President, U.S. Market 01 Nov 2022, 16:30
MRK Merck & Co., Inc. 03 May 2022 4 +$40,066 4 SVP, U.S. Market 05 May 2022, 17:27
MRK Merck & Co., Inc. 03 May 2022 3 +$34,359 4 SVP, U.S. Market 04 May 2022, 17:30
MRK Merck & Co., Inc. 01 May 2022 3 +$38,935 4 SVP, U.S. Market 03 May 2022, 16:16
MRK Merck & Co., Inc. 28 Feb 2022 0 $0 3 SVP, U.S. Market 10 Mar 2022, 18:17