Merck's top three insider shareholders as of September 29, 2026 are Kenneth C Frazier (Executive Chair, 700.65K shares), Robert M Davis (Chairman, Ceo President, 450.35K shares), Richard R. Deluca (Evppres, Merck Animal Heallth, 110.17K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Kenneth C Frazier | Executive Chair | 700,653 | 0 | 700,653 | 36.2% | 08 Nov, 2022 |
| 2 | Robert M Davis | Chairman, Ceo President | 450,351 | 0 | 450,351 | 23.3% | 01 May, 2026 |
| 3 | Richard R. Deluca | Evppres, Merck Animal Heallth | 110,167 | 0 | 110,167 | 5.7% | 12 Aug, 2026 |
| 4 | Frank Clyburn | Evp Pres ? Human Health | 97,095 | 0 | 97,095 | 5.0% | 02 Nov, 2021 |
| 5 | Dean Y Li | Executive Vp President, Mrl | 94,431 | 0 | 94,431 | 4.9% | 01 May, 2026 |
| 6 | Caroline Litchfield | Evp Cfo | 92,301 | 0 | 92,301 | 4.8% | 01 May, 2026 |
| 7 | Julie L. Gerberding | Evp, Chief Patient Officer | 48,712 | 0 | 48,712 | 2.5% | 28 Feb, 2022 |
| 8 | Rita A Karachun | Sr. Vp Fince Global Controller | 45,710 | 0 | 45,710 | 2.4% | 05 May, 2023 |
| 9 | Jennifer Zachary | Evp, General Counsel | 45,509 | 0 | 45,509 | 2.4% | 13 Aug, 2026 |
| 10 | Chirfi Guindo | Evp, Access, Policy Comms | 36,613 | 0 | 36,613 | 1.9% | 13 Aug, 2026 |
| 11 | David Michael Williams | Evp,Chief Infodigital Officer | 31,716 | 0 | 31,716 | 1.6% | 07 Aug, 2026 |
| 12 | Joseph Romanelli | President, Human Health Int?L | 28,739 | 0 | 28,739 | 1.5% | 28 Jan, 2026 |
| 13 | Michael A Klobuchar | Evp Chief Strategy Officer | 23,621 | 0 | 23,621 | 1.2% | 06 May, 2024 |
| 14 | Steven Mizell | Evp, Chief Hr Officer | 23,619 | 0 | 23,619 | 1.2% | 02 Feb, 2024 |
| 15 | Johannes Jacobus Oosthuizen | Evp, Oncology Int?L | 21,895 | 0 | 21,895 | 1.1% | 01 May, 2026 |
| 16 | David R. Maraldo | Evp Pres. Mmd | 18,212 | 0 | 18,212 | 0.9% | 07 Aug, 2026 |
| 17 | Douglas M Jr Baker | Director | 16,000 | 0 | 16,000 | 0.8% | 07 Feb, 2025 |
| 18 | Sanat Chattopadhyay | Exe V P Pres. Mmd | 15,347 | 0 | 15,347 | 0.8% | 01 May, 2026 |
| 19 | Betty D Larson | Evp, Chief Hr Officer | 13,774 | 0 | 13,774 | 0.7% | 01 May, 2026 |
| 20 | Dalton E. Iii Smart | Svp Fin. Global Controller | 9,388 | 0 | 9,388 | 0.5% | 05 May, 2026 |
| 21 | Lisa Lecointe-Cephas | Svp Chief Ethics Com Officer | 5,142 | 0 | 5,142 | 0.3% | 05 May, 2023 |
| 22 | Inge G Thulin | Director | 2,933 | 0 | 2,933 | 0.2% | 07 Feb, 2025 |
| 23 | Arpa Garay | Svp Human Health Global Mktg. | 2,109 | 0 | 2,109 | 0.1% | 05 May, 2022 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 12 Aug, 2026 | Jennifer Zachary | Evp, General Counsel | Acquired M | 41,494 | $117.89 | $4.89Mn | 112,391 | Direct |
| 13 Aug, 2026 | Chirfi Guindo | Evp, Access, Policy Comms | Disposed S | 10,000 | $135.00 | $1.35Mn | 36,613 | Direct |
| 12 Aug, 2026 | Jennifer Zachary | Evp, General Counsel | Acquired M | 13,433 | $84.71 | $1.14Mn | 125,824 | Direct |
| 12 Aug, 2026 | Jennifer Zachary | Evp, General Counsel | Disposed S | 80,315 | $133.46 | $10.72Mn | 45,509 | Direct |
| 12 Aug, 2026 | Jennifer Zachary | Evp, General Counsel | Disposed M | 41,494 | $0.00 | $0 | 0 | Direct |
| 12 Aug, 2026 | Jennifer Zachary | Evp, General Counsel | Disposed M | 13,433 | $0.00 | $0 | 0 | Direct |
| 10 Aug, 2026 | Richard R. Deluca | Evppres, Merck Animal Heallth | Disposed S | 20,784 | $130.43 | $2.71Mn | 134,703 | Direct |
| 11 Aug, 2026 | Richard R. Deluca | Evppres, Merck Animal Heallth | Disposed S | 7,410 | $131.33 | $973.16K | 127,293 | Direct |
| 11 Aug, 2026 | Richard R. Deluca | Evppres, Merck Animal Heallth | Disposed S | 5,427 | $132.35 | $718.26K | 121,866 | Direct |
| 12 Aug, 2026 | Richard R. Deluca | Evppres, Merck Animal Heallth | Disposed S | 11,099 | $131.61 | $1.46Mn | 110,767 | Direct |
| 12 Aug, 2026 | Richard R. Deluca | Evppres, Merck Animal Heallth | Disposed S | 600 | $132.04 | $79.22K | 110,167 | Direct |
| 06 Aug, 2026 | Richard R. Deluca | Evppres, Merck Animal Heallth | Disposed S | 805 | $131.02 | $105.47K | 160,732 | Direct |
| 06 Aug, 2026 | Richard R. Deluca | Evppres, Merck Animal Heallth | Disposed S | 4,945 | $130.23 | $643.99K | 155,787 | Direct |
| 06 Aug, 2026 | Richard R. Deluca | Evppres, Merck Animal Heallth | Disposed S | 300 | $131.02 | $39.31K | 155,487 | Direct |
| 05 Aug, 2026 | David Michael Williams | Evp,Chief Infodigital Officer | Acquired M | 4,600 | $77.62 | $357.05K | 36,316 | Direct |
| 05 Aug, 2026 | David R. Maraldo | Evp Pres. Mmd | Acquired M | 6,311 | $73.73 | $465.31K | 24,523 | Direct |
| 06 Aug, 2026 | Chirfi Guindo | Evp, Access, Policy Comms | Disposed S | 15,000 | $131.00 | $1.97Mn | 46,613 | Direct |
| 05 Aug, 2026 | David Michael Williams | Evp,Chief Infodigital Officer | Disposed S | 4,600 | $128.77 | $592.35K | 31,716 | Direct |
| 05 Aug, 2026 | David R. Maraldo | Evp Pres. Mmd | Disposed S | 6,311 | $128.72 | $812.34K | 18,212 | Direct |
| 05 Aug, 2026 | David Michael Williams | Evp,Chief Infodigital Officer | Acquired M | 13,542 | $75.36 | $1.02Mn | 45,258 | Direct |