David Michael Williams

CIK 1820958 · View on SEC EDGAR ↗

Insider

First SEC filing: Aug. 13, 2020 · Latest: May 7, 2026

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Insider at

Insider transactions

0 buys (P) 5 sells (S) Net: $-8,134,652 + 58 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

58 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Aug. 5, 2026 MRK S 4,600 $128.77 $592,342 31,716 Direct -12.67% Disposed 17.5% (price as of 2026-08-19)
Aug. 5, 2026 MRK S 13,542 $128.77 $1,743,803 31,716 Direct -29.92% Disposed 17.5% (price as of 2026-08-19)
Aug. 5, 2026 MRK S 34,705 $128.77 $4,468,963 31,716 Direct -52.25% Disposed 17.5% (price as of 2026-08-19)
Feb. 6, 2026 MRK S 5,000 $121.90 $609,500 30,838 Direct -13.95% Disposed 24.2% (price as of 2026-08-19)
Nov. 3, 2025 MRK S 8,614 $83.59 $720,044 24,578 Direct -25.95% Disposed 81.1% (price as of 2026-08-19)
Feb. 13, 2025 MRK S 6,000 $85.34 $512,040 24,123 Direct -19.92% Disposed 77.4% (price as of 2026-08-19)
Feb. 7, 2024 MRK S 1,451 $127.57 $185,104 19,812 Direct -6.82% Disposed 18.7% (price as of 2026-08-19)
May 2, 2023 MRK S 7,509 $116.82 $877,201 11,059 Direct -40.44% Disposed 29.6% (price as of 2026-08-19)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
Aug. 5, 2026 MRK Stock Option (Right to Buy) Common Stock (4,600) $77.62 May 2, 2029 4,600 Disposed
Aug. 5, 2026 MRK Stock Option (Right to Buy) Common Stock (13,542) — April 30, 2030 13,542 Disposed
Aug. 5, 2026 MRK Stock Option (Right to Buy) Common Stock (34,705) — May 3, 2031 34,705 Disposed
May 5, 2026 MRK Stock Option (Right to Buy) Common Stock (13,582) $113.15 May 4, 2036 13,582 Acquired
May 5, 2026 MRK Restricted Stock Unit Common Stock (4,640) — May 5, 2029 4,640 Acquired
April 29, 2026 MRK Restricted Stock Unit Common Stock (1,377) — April 29, 2028 1,377 Disposed
Feb. 6, 2026 MRK Stock Option (Right to Buy) Common Stock (5,000) — May 2, 2029 5,000 Disposed
Aug. 4, 2025 MRK Restricted Stock Unit Common Stock (17,119) — Aug. 3, 2025 17,119 Disposed
April 29, 2025 MRK Stock Option (Right to Buy) Common Stock (18,807) $84.71 April 28, 2035 18,807 Acquired
April 29, 2025 MRK Restricted Stock Unit Common Stock (4,132) — April 29, 2028 4,132 Acquired
April 30, 2024 MRK Stock Option (Right to Buy) Common Stock (16,406) $129.22 April 29, 2034 16,406 Acquired
May 2, 2023 MRK Stock Option (Right to Buy) Common Stock (19,364) $117.89 May 1, 2033 19,364 Acquired
May 2, 2023 MRK Stock Option (Right to Buy) Common Stock (6,035) — May 3, 2028 6,035 Disposed
May 1, 2023 MRK Restricted Stock Unit Common Stock (577) — May 1, 2023 577 Disposed
Feb. 10, 2023 MRK Restricted Stock Unit Common Stock (1,205) — Feb. 10, 2023 1,205 Disposed
Aug. 3, 2022 MRK Restricted Stock Unit Common Stock (17,119) — Aug. 3, 2025 17,119 Acquired
May 3, 2022 MRK Stock Option (Right to Buy) Common Stock (21,359) $87.10 May 2, 2032 21,359 Acquired
May 3, 2022 MRK Restricted Stock Unit Common Stock (427) — May 3, 2022 427 Disposed
May 1, 2022 MRK Restricted Stock Unit Common Stock (577) — May 1, 2023 577 Disposed
Feb. 10, 2022 MRK Restricted Stock Unit Common Stock — Feb. 10, 2023 1,202 Disposed
May 4, 2021 MRK Restricted Stock Unit Common Stock (417) — May 4, 2021 417 Disposed
May 4, 2021 MRK Stock Option (Right to Buy) Common Stock (33,673) $75.99 May 3, 2031 33,673 Acquired
May 3, 2021 MRK Restricted Stock Unit Common Stock (412) — May 3, 2022 412 Disposed
May 1, 2021 MRK Restricted Stock Unit Common Stock (560) — May 1, 2023 560 Disposed
Feb. 10, 2021 MRK Restricted Stock Unit Common Stock (1,167) — Feb. 10, 2023 1,167 Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 8 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date Ticker Security Shares Ownership
Aug. 13, 2020 MRK Common Stock 2,492 Direct
Aug. 13, 2020 MRK Restricted Stock Unit→ Common Stock (417) 417 Direct
Aug. 13, 2020 MRK Restricted Stock Unit→ Common Stock (826) 826 Direct
Aug. 13, 2020 MRK Restricted Stock Unit→ Common Stock (3,502) 3,502 Direct
Aug. 13, 2020 MRK Restricted Stock Unit→ Common Stock (1,680) 1,680 Direct
Aug. 13, 2020 MRK Stock Option (Right to Buy)→ Common Stock (5,856) 5,856 Direct
Aug. 13, 2020 MRK Stock Option (Right to Buy)→ Common Stock (9,315) 9,315 Direct
Aug. 13, 2020 MRK Stock Option (Right to Buy)→ Common Stock (13,139) 13,139 Direct