Merck & Co., Inc. SEC Filings

Seidman Christine E transacted N/A shares of Common Stock at $N/A on N/A; Seidman Christine E bought 63 shares of Phantom Stock at $128.50 on 2026-06-30

Karsanbhai Surendralal Lanca transacted N/A shares of Common Stock at $N/A on N/A; Karsanbhai Surendralal Lanca bought 126 shares of Phantom Stock at $128.50 on 2026-06-30

Coe Mary Ellen transacted N/A shares of Common Stock at $N/A on N/A; Coe Mary Ellen bought 233 shares of Phantom Stock at $128.50 on 2026-06-30

Warden Kathy J transacted N/A shares of Common Stock at $N/A on N/A; Warden Kathy J bought 1,853 shares of Phantom Stock at $118.72 on 2026-05-29

Karsanbhai Surendralal Lanca transacted N/A shares of Common Stock at $N/A on N/A; Karsanbhai Surendralal Lanca bought 1,853 shares of Phantom Stock at $118.72 on 2026-05-29

Coe Mary Ellen transacted N/A shares of Common Stock at $N/A on N/A; Coe Mary Ellen bought 1,853 shares of Phantom Stock at $118.72 on 2026-05-29

THULIN INGE G transacted N/A shares of Common Stock at $N/A on N/A; THULIN INGE G bought 1,853 shares of Phantom Stock at $118.72 on 2026-05-29

Seidman Christine E transacted N/A shares of Common Stock at $N/A on N/A; Seidman Christine E bought 1,853 shares of Phantom Stock at $118.72 on 2026-05-29

RUSSO PATRICIA F transacted N/A shares of Common Stock at $N/A on N/A; RUSSO PATRICIA F bought 1,853 shares of Phantom Stock at $118.72 on 2026-05-29

Rothman Paul transacted N/A shares of Common Stock at $N/A on N/A; Rothman Paul bought 1,853 shares of Phantom Stock at $118.72 on 2026-05-29

Mayo Stephen transacted N/A shares of Common Stock at $N/A on N/A; Mayo Stephen bought 1,853 shares of Phantom Stock at $118.72 on 2026-05-29

LAVIZZO-MOUREY RISA J transacted N/A shares of Common Stock at $N/A on N/A; LAVIZZO-MOUREY RISA J bought 1,853 shares of Phantom Stock at $118.72 on 2026-05-29

GLOCER THOMAS H transacted N/A shares of Common Stock at $N/A on N/A; GLOCER THOMAS H bought 1,853 shares of Phantom Stock at $118.72 on 2026-05-29

Craig Pamela J. transacted N/A shares of Common Stock at $N/A on N/A; Craig Pamela J. bought 1,853 shares of Phantom Stock at $118.72 on 2026-05-29

BAKER DOUGLAS M JR transacted N/A shares of Common Stock at $N/A on N/A; BAKER DOUGLAS M JR bought 1,853 shares of Phantom Stock at $118.72 on 2026-05-29

Zachary Jennifer transacted N/A shares of Common Stock at $N/A on N/A; Zachary Jennifer bought 12,064 shares of Restricted Stock Unit at $N/A on 2026-05-05; Zachary Jennifer bought 35,312 shares of Stock Option (Right to Buy) at $N/A on 2026-05-05

Williams David Michael transacted N/A shares of Common Stock at $N/A on N/A; Williams David Michael bought 4,640 shares of Restricted Stock Unit at $N/A on 2026-05-05; Williams David Michael bought 13,582 shares of Stock Option (Right to Buy) at $N/A on 2026-05-05

Litchfield Caroline transacted N/A shares of Common Stock at $N/A on N/A; Litchfield Caroline bought 15,908 shares of Restricted Stock Unit at $N/A on 2026-05-05; Litchfield Caroline bought 46,566 shares of Stock Option (Right to Buy) at $N/A on 2026-05-05