MRK
Merck & Co., Inc.
Pharmaceutical PreparationsNYSELarge accelerated filer
Total Trades
90
Buys
1
Sells
56
Largest Trade
N/A
Insiders
15
Institutional Funds
3,325
Inst. Value
$1M+
Activist Filings
5
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| DeLuca Richard R. | EVP&Pres | EXERCISE | $1M+ | 142K | $58.86 | May 2, 2023 |
| Davis Robert M | Chairman | SELL | $1M+ | 143K | $114.93 | Apr 28, 2023 |
| Davis Robert M | Chairman | EXERCISE | $1M+ | 143K | $56.04 | Apr 28, 2023 |
| Chattopadhyay Sanat | Exe V-P & Pres. MMD | EXERCISE | $1M+ | 134K | $59.02 | Apr 14, 2023 |
| Chattopadhyay Sanat | Exe V-P & Pres. MMD | SELL | $1M+ | 134K | $115.07 | Apr 14, 2023 |
| Romanelli Joseph | President | SELL | $500K+ | 5K | $108.22 | Feb 16, 2023 |
| MIZELL STEVEN | EVP | SELL | $100K–$500K | 2K | $109.10 | Feb 14, 2023 |
| MIZELL STEVEN | EVP | SELL | $500K+ | 5K | $107.00 | Feb 10, 2023 |
| MIZELL STEVEN | EVP | SELL | $100K–$500K | 4K | $104.25 | Feb 8, 2023 |
| Zachary Jennifer | EVP, General Counsel | SELL | $1M+ | 75K | $103.17 | Feb 6, 2023 |
| Zachary Jennifer | EVP, General Counsel | EXERCISE | $1M+ | 75K | $56.04 | Feb 6, 2023 |
| Chattopadhyay Sanat | Exe V-P & Pres. MMD | SELL | $1M+ | 84K | $112.29 | Jan 11, 2023 |
| Chattopadhyay Sanat | Exe V-P & Pres. MMD | EXERCISE | $1M+ | 84K | $53.06 | Jan 11, 2023 |
| MIZELL STEVEN | EVP | EXERCISE | N/A | 35K | — | Nov 10, 2022 |
| MIZELL STEVEN | EVP | SELL | $1M+ | 35K | $101.18 | Nov 10, 2022 |
| Oosthuizen Johannes Jacobus | President | SELL | $100K–$500K | 2K | $103.21 | Nov 10, 2022 |
| Davis Robert M | CEO & President | SELL | $1M+ | 168K | $102.44 | Nov 10, 2022 |
| Davis Robert M | CEO & President | EXERCISE | N/A | 168K | — | Nov 10, 2022 |
| FRAZIER KENNETH C | Executive Chair | SELL | $1M+ | 236K | $99.55 | Nov 8, 2022 |
| FRAZIER KENNETH C | Executive Chair | EXERCISE | N/A | 236K | — | Nov 8, 2022 |
| Oosthuizen Johannes Jacobus | President | EXERCISE | N/A | 53K | — | Nov 7, 2022 |
| Oosthuizen Johannes Jacobus | President | SELL | $1M+ | 46K | $99.47 | Nov 7, 2022 |
| FRAZIER KENNETH C | Executive Chair | EXERCISE | N/A | 470K | — | Nov 7, 2022 |
| FRAZIER KENNETH C | Executive Chair | SELL | $1M+ | 470K | $98.66 | Nov 7, 2022 |
| FRAZIER KENNETH C | Executive Chair | SELL | $1M+ | 600K | $99.86 | Nov 3, 2022 |
| FRAZIER KENNETH C | Executive Chair | EXERCISE | N/A | 600K | — | Nov 3, 2022 |
| Chattopadhyay Sanat | Exe V-P & Pres. MMD | EXERCISE | N/A | 100K | — | Nov 1, 2022 |
| Chattopadhyay Sanat | Exe V-P & Pres. MMD | SELL | $1M+ | 100K | $100.10 | Nov 1, 2022 |
| DeLuca Richard R. | EVP&Pres | EXERCISE | N/A | 165K | — | Nov 1, 2022 |
| DeLuca Richard R. | EVP&Pres | SELL | $1M+ | 165K | $100.26 | Nov 1, 2022 |
| FRAZIER KENNETH C | Executive Chair | SELL | $1M+ | 867K | $100.44 | Nov 1, 2022 |
| FRAZIER KENNETH C | Executive Chair | EXERCISE | N/A | 867K | — | Nov 1, 2022 |
| Karachun Rita A | Sr. VP Fince-Globa… | SELL | $1M+ | 32K | $100.34 | Nov 1, 2022 |
| Karachun Rita A | Sr. VP Fince-Globa… | EXERCISE | N/A | 32K | — | Nov 1, 2022 |
| MIZELL STEVEN | EVP | EXERCISE | N/A | 17K | — | Nov 1, 2022 |
| MIZELL STEVEN | EVP | SELL | $1M+ | 25K | $99.63 | Nov 1, 2022 |
| Oosthuizen Johannes Jacobus | President | EXERCISE | $50K–$100K | 913 | $100.77 | Nov 1, 2022 |
| Oosthuizen Johannes Jacobus | President | SELL | $100K–$500K | 4K | $100.21 | Nov 1, 2022 |
| Zachary Jennifer | EVP, General Counsel | SELL | $1M+ | 165K | $99.38 | Nov 1, 2022 |
| Zachary Jennifer | EVP, General Counsel | EXERCISE | N/A | 149K | — | Nov 1, 2022 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 3,325 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| STATE STREET CORP | 120.0M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 52.5M | $1M+ | SH |
| NORGES BANK | 38.0M | $1M+ | SH |
| Fisher Asset Management, LLC | 24.9M | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 10.7M | $1M+ | SH |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 9.9M | $1M+ | SH |
| STATE FARM MUTUAL AUTOMOBILE INSURANCE CO | 9.6M | $1M+ | SH |
| ALLIANCEBERNSTEIN L.P. | 8.6M | $1M+ | SH |
| CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM | 8.6M | $1M+ | SH |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | 7.4M | $1M+ | SH |
| NORDEA INVESTMENT MANAGEMENT AB | 7.3M | $1M+ | SH |
| Sumitomo Mitsui Trust Group, Inc. | 7.0M | $1M+ | SH |
| Swiss National Bank | 6.8M | $1M+ | SH |
| BlackRock, Inc. | 6.2M | $1M+ | SH |
| UBS Group AG | 6.1M | $1M+ | SH |
| National Pension Service | 5.8M | $1M+ | SH |
| Legal & General Group Plc | 5.8M | $1M+ | SH |
| DekaBank Deutsche Girozentrale | 4.1M | $1M+ | SH |
| JENNISON ASSOCIATES LLC | 5.5M | $1M+ | SH |
| Mitsubishi UFJ Asset Management Co., Ltd. | 5.4M | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Mar 6, 2025
10.0%
253.3M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
9.7%
244.8M shares
SC 13G/A · Jan 26, 2024
8.0%
201.8M shares
SC 13G/A · Feb 3, 2023
8.5%
215.0M shares
SC 13G/A · Jan 31, 2022
7.8%
198.2M shares