Merck & Co., Inc.
MRK- Exchange
- NYSE
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0000310158
In the last 90 days, Merck & Co., Inc. insiders filed 0 open-market purchases and 7 sales; 3,854 institutions reported holding it in 13F filings for Q2 2026, worth $254.3B in total; 4 superinvestors hold it, including Harris Associates (Oakmark) and Fairfax Financial.
Members of Congress who traded MRK
Since 2020, newest trade first. Options and trades reported under an earlier ticker are included.
- Trades
- 125
- Filings
- 101
- Members
- 44
- Buys / sells
- 57 / 68
- Estimated volume
- $1.88M
- Sum of range midpoints
| Member | Trades | Buys / sells | Est. volume | Last traded | Last filed |
|---|---|---|---|---|---|
| Maria Elvira SalazarRepublican · House · FL | 2 | 2 / 0 | $65.0K | Aug 19, 2026 | Sep 9, 2026 |
| Alan ArmstrongRepublican · Senate · OK | 1 | 0 / 1 | $32.5K | Mar 27, 2026 | Jul 21, 2026 |
| Josh GottheimerDemocrat · House · NJ | 4 | 1 / 3 | $56.5K | Feb 4, 2026 | Mar 16, 2026 |
| Gilbert Ray Cisneros, Jr.Democrat · House · CA | 8 | 5 / 3 | $113.0K | Dec 19, 2025 | Jan 12, 2026 |
| Julie JohnsonDemocrat · House · TX | 5 | 2 / 3 | $40.0K | Dec 18, 2025 | Jan 15, 2026 |
| Val T. HoyleDemocrat · House · OR | 2 | 1 / 1 | $16.0K | Sep 23, 2025 | Oct 10, 2025 |
| Marjorie Taylor GreeneRepublican · House · GA | 3 | 3 / 0 | $24.0K | Aug 28, 2025 | Aug 29, 2025 |
| Lisa C. McClainRepublican · House · MI | 2 | 1 / 1 | $16.0K | Aug 4, 2025 | Sep 12, 2025 |
| Ritchie TorresDemocrat · House · NY | 2 | 1 / 1 | $16.0K | Jul 11, 2025 | Aug 20, 2025 |
| Scott FranklinRepublican · House · FL | 4 | 2 / 2 | $56.5K | Jun 16, 2025 | Jul 14, 2025 |
| Robert P. Bresnahan, Jr.Republican · House · PA | 3 | 1 / 2 | $97.5K | May 15, 2025 | May 31, 2025 |
| Bruce WestermanRepublican · House · AR | 2 | 1 / 1 | $16.0K | Apr 21, 2025 | May 12, 2025 |
| Jefferson ShreveRepublican · House · IN | 2 | 1 / 1 | $65.0K | Apr 17, 2025 | May 8, 2025 |
| Kelly MorrisonDemocrat · House · MN | 1 | 0 / 1 | $8.00K | Mar 20, 2025 | Apr 11, 2025 |
| Sheri BiggsRepublican · House · SC | 1 | 0 / 1 | $32.5K | Mar 19, 2025 | Oct 5, 2025 |
| Byron DonaldsRepublican · House · FL | 2 | 0 / 2 | $16.0K | Jan 16, 2025 | Feb 10, 2025 |
| Jared MoskowitzDemocrat · House · FL | 9 | 6 / 3 | $72.0K | Jan 15, 2025 | Feb 10, 2025 |
| Jonathan L. JacksonDemocrat · House · IL | 1 | 0 / 1 | $32.5K | Sep 24, 2024 | Oct 11, 2024 |
| John JamesRepublican · House · MI | 2 | 1 / 1 | $16.0K | Sep 4, 2024 | Sep 6, 2024 |
| Kathy E. ManningDemocrat · House · NC | 7 | 6 / 1 | $80.5K | Jul 2, 2024 | Aug 16, 2024 |
| Michael C. BurgessRepublican · House · TX | 2 | 0 / 2 | $16.0K | Apr 10, 2024 | May 2, 2024 |
| Greg StantonDemocrat · House · AZ | 2 | 1 / 1 | $16.0K | Oct 24, 2023 | Nov 9, 2023 |
| Tommy TubervilleRepublican · Senate · AL | 3 | 1 / 2 | $24.0K | Oct 16, 2023 | Nov 16, 2023 |
| Pete RickettsRepublican · Senate · NE | 1 | 0 / 1 | $75.0K | Sep 21, 2023 | Oct 20, 2023 |
| Lois FrankelDemocrat · House · FL | 11 | 6 / 5 | $88.0K | Sep 8, 2023 | Oct 10, 2023 |
| Daniel S. GoldmanDemocrat · House · NY | 5 | 2 / 3 | $64.5K | Jul 14, 2023 | Aug 13, 2023 |
| Zoe LofgrenDemocrat · House · CA | 3 | 1 / 2 | $24.0K | May 25, 2023 | Jun 6, 2023 |
| Rick LarsenDemocrat · House · WA | 1 | 1 / 0 | $8.00K | Jul 7, 2022 | May 26, 2023 |
| John H. RutherfordRepublican · House · FL | 1 | 0 / 1 | $8.00K | Mar 16, 2022 | Apr 19, 2022 |
| Robert J. WittmanRepublican · House · VA | 2 | 1 / 1 | $16.0K | Feb 28, 2022 | Mar 9, 2022 |
| Bob GibbsRepublican · House · OH | 1 | 1 / 0 | $8.00K | Nov 26, 2021 | Nov 28, 2021 |
| Katherine M. ClarkDemocrat · House · MA | 3 | 2 / 1 | $24.0K | Sep 16, 2021 | Oct 14, 2021 |
| Carol D. MillerRepublican · House · WV | 1 | 0 / 1 | $32.5K | Jul 28, 2021 | Sep 2, 2022 |
| John R. CurtisRepublican · House · UT | 2 | 1 / 1 | $16.0K | Jul 19, 2021 | Aug 6, 2021 |
| Sara JacobsDemocrat · House · CA | 1 | 0 / 1 | $75.0K | Apr 9, 2021 | May 28, 2021 |
| William R. KeatingDemocrat · House · MA | 1 | 1 / 0 | $8.00K | Mar 17, 2021 | Apr 27, 2021 |
| Rick W. AllenRepublican · House · GA | 3 | 1 / 2 | $73.0K | Mar 10, 2021 | Aug 10, 2023 |
| Peter MeijerRepublican · House · MI | 3 | 1 / 2 | $24.0K | Jan 28, 2021 | Feb 23, 2021 |
| Tom MalinowskiDemocrat · House · NJ | 2 | 1 / 1 | $65.0K | Nov 4, 2020 | Aug 26, 2021 |
| David PerdueRepublican · Senate · GA | 6 | 0 / 6 | $188.5K | Apr 16, 2020 | May 2, 2021 |
| Kelly LoefflerRepublican · Senate · GA | 2 | 1 / 1 | $40.5K | Apr 7, 2020 | May 1, 2020 |
| Mikie SherrillDemocrat · House · NJ | 2 | 0 / 2 | $8.77K | Feb 20, 2020 | Apr 5, 2020 |
| Mike GallagherRepublican · House · WI | 1 | 0 / 1 | $8.00K | Jan 13, 2020 | Feb 8, 2020 |
| Thomas R. SuozziDemocrat · House · NY | 3 | 1 / 2 | $97.5K | Nov 18, 2019 | Dec 19, 2022 |
Trades
Every reported trade in Merck & Co., Inc., newest filings first.
| Member | Asset | Type | Owner | Traded | Filed | Delay | Amount | Source |
|---|---|---|---|---|---|---|---|---|
| Maria Elvira SalazarRepublican · House · FL | MRKMerck & Company, Inc. Common Stock | Buy | Self | Aug 19, 2026 | Sep 9, 2026 | 21 days | $15K-$50K | Filing |
| Maria Elvira SalazarRepublican · House · FL | MRKMerck & Company, Inc. Common Stock | Buy | Self | Aug 19, 2026 | Sep 9, 2026 | 21 days | $15K-$50K | Filing |
| Alan ArmstrongRepublican · Senate · OK | MRKMerck & Company, Inc. Common Stock (new) | Sell (full) | Self | Mar 27, 2026 | Jul 21, 2026 | 116 daysLate | $15K-$50K | Filing |
| Josh GottheimerDemocrat · House · NJ | MRKMerck & Company, Inc. Common Stock | Buy | Joint | Feb 4, 2026 | Mar 16, 2026 | 40 days | $1K-$15K | Filing |
| Julie JohnsonDemocrat · House · TX | MRKMerck & Company, Inc. Common Stock | Sell | Joint | Dec 18, 2025 | Jan 15, 2026 | 28 days | $1K-$15K | Filing |
| Gilbert Ray Cisneros, Jr.Democrat · House · CA | MRKMerck & Company, Inc. Common Stock | Buy | Self | Dec 19, 2025 | Jan 12, 2026 | 24 days | $1K-$15K | Filing |
| Gilbert Ray Cisneros, Jr.Democrat · House · CA | MRKMerck & Company, Inc. Common Stock | Buy | Self | Nov 18, 2025 | Dec 15, 2025 | 27 days | $1K-$15K | Filing |
| Julie JohnsonDemocrat · House · TX | MRKMerck & Company, Inc. Common Stock | Sell (partial) | Joint | Nov 13, 2025 | Dec 11, 2025 | 28 days | $1K-$15K | Filing |
| Val T. HoyleDemocrat · House · OR | MRKMerck & Company, Inc. Common Stock | Sell | Spouse | Sep 23, 2025 | Oct 10, 2025 | 17 days | $1K-$15K | Filing |
| Sheri BiggsRepublican · House · SC | MRKMerck & Company, Inc. Common Stock | Sell | Spouse | Mar 19, 2025 | Oct 5, 2025 | 200 daysLate | $15K-$50K | Filing |
| Val T. HoyleDemocrat · House · OR | MRKMerck & Company, Inc. Common Stock | Buy | Spouse | Oct 29, 2024 | Sep 12, 2025 | 318 daysLate | $1K-$15K | Filing |
| Gilbert Ray Cisneros, Jr.Democrat · House · CA | MRKMerck & Company, Inc. Common Stock | Buy | Self | Aug 5, 2025 | Sep 12, 2025 | 38 days | $1K-$15K | Filing |
| Lisa C. McClainRepublican · House · MI | MRKMerck & Company, Inc. Common Stock | Sell | Spouse | Aug 4, 2025 | Sep 12, 2025 | 39 days | $1K-$15K | Filing |
| Julie JohnsonDemocrat · House · TX | MRKMerck & Company, Inc. Common Stock | Sell (partial) | Joint | Aug 14, 2025 | Sep 11, 2025 | 28 days | $1K-$15K | Filing |
| Marjorie Taylor GreeneRepublican · House · GA | MRKMerck & Company, Inc. Common Stock | Buy | Self | Aug 28, 2025 | Aug 29, 2025 | 1 day | $1K-$15K | Filing |
| Ritchie TorresDemocrat · House · NY | MRKMerck & Company, Inc. Common Stock | Sell | Self | Jul 11, 2025 | Aug 20, 2025 | 40 days | $1K-$15K | Filing |
| Ritchie TorresDemocrat · House · NY | MRKMerck & Company, Inc. Common Stock | Buy | Self | Sep 26, 2024 | Aug 20, 2025 | 328 daysLate | $1K-$15K | Filing |
| Lisa C. McClainRepublican · House · MI | MRKMerck & Company, Inc. Common Stock | Buy | Spouse | Jun 24, 2025 | Aug 13, 2025 | 50 daysLate | $1K-$15K | Filing |
| Scott FranklinRepublican · House · FL | MRKMerck & Company, Inc. Common Stock | Sell | Joint | Jun 16, 2025 | Jul 14, 2025 | 28 days | $1K-$15K | Filing |
| Julie JohnsonDemocrat · House · TX | MRKMerck & Company, Inc. Common Stock | Buy | Joint | Jun 13, 2025 | Jul 14, 2025 | 31 days | $1K-$15K | Filing |
| Scott FranklinRepublican · House · FL | MRKMerck & Company, Inc. Common Stock | Buy | Spouse | Aug 7, 2024 | Jul 3, 2025 | 330 daysLate | $1K-$15K | Filing |
| Gilbert Ray Cisneros, Jr.Democrat · House · CA | MRKMerck & Company, Inc. Common Stock | Sell | Self | May 30, 2025 | Jun 6, 2025 | 7 days | $1K-$15K | Filing |
| Robert P. Bresnahan, Jr.Republican · House · PA | MRKMerck & Company, Inc. Common Stock | Sell | Self | May 15, 2025 | May 31, 2025 | 16 days | $15K-$50K | Filing |
| Bruce WestermanRepublican · House · AR | MRKMerck & Company, Inc. Common Stock | Sell | Self | Apr 21, 2025 | May 12, 2025 | 21 days | $1K-$15K | Filing |
| Robert P. Bresnahan, Jr.Republican · House · PA | MRKMerck & Company, Inc. Common Stock | Buy | Self | Apr 8, 2025 | May 8, 2025 | 30 days | $15K-$50K | Filing |
| Jefferson ShreveRepublican · House · IN | MRKMerck & Company, Inc. Common Stock | Sell | Self | Apr 17, 2025 | May 8, 2025 | 21 days | $15K-$50K | Filing |
| Marjorie Taylor GreeneRepublican · House · GA | MRKMerck & Company, Inc. Common Stock | Buy | Self | May 5, 2025 | May 6, 2025 | 1 day | $1K-$15K | Filing |
| Gilbert Ray Cisneros, Jr.Democrat · House · CA | MRKMerck & Company, Inc. Common Stock | Buy | Self | Apr 29, 2025 | May 6, 2025 | 7 days | $1K-$15K | Filing |
| Bruce WestermanRepublican · House · AR | MRKMerck & Company, Inc. Common Stock | Buy | Self | Mar 3, 2025 | Apr 16, 2025 | 44 days | $1K-$15K | Filing |
| Marjorie Taylor GreeneRepublican · House · GA | MRKMerck & Company, Inc. Common Stock | Buy | Self | Apr 9, 2025 | Apr 11, 2025 | 2 days | $1K-$15K | Filing |
| Kelly MorrisonDemocrat · House · MN | MRKMerck & Company, Inc. Common Stock | Sell (partial) | Self | Mar 20, 2025 | Apr 11, 2025 | 22 days | $1K-$15K | Filing |
| Gilbert Ray Cisneros, Jr.Democrat · House · CA | MRKMerck & Company, Inc. Common Stock | Sell (partial) | Self | Mar 31, 2025 | Apr 7, 2025 | 7 days | $15K-$50K | Filing |
| Robert P. Bresnahan, Jr.Republican · House · PA | MRKMerck & Company, Inc. Common Stock | Sell | Self | Feb 25, 2025 | Mar 27, 2025 | 30 days | $15K-$50K | Filing |
| Jefferson ShreveRepublican · House · IN | MRKMerck & Company, Inc. Common Stock | Buy | Self | Feb 24, 2025 | Mar 9, 2025 | 13 days | $15K-$50K | Filing |
| Gilbert Ray Cisneros, Jr.Democrat · House · CA | MRKMerck & Company, Inc. Common Stock | Buy | Self | Feb 26, 2025 | Mar 6, 2025 | 8 days | $15K-$50K | Filing |
| Julie JohnsonDemocrat · House · TX | MRKMerck & Company, Inc. Common Stock | Buy | Joint | Jan 17, 2025 | Feb 12, 2025 | 26 days | $1K-$15K | Filing |
| Gilbert Ray Cisneros, Jr.Democrat · House · CA | MRKMerck & Company, Inc. Common Stock | Sell | Self | Jan 24, 2025 | Feb 11, 2025 | 18 days | $1K-$15K | Filing |
| Josh GottheimerDemocrat · House · NJ | MRKMerck & Company, Inc. Common Stock | Sell | Joint | Jan 27, 2025 | Feb 10, 2025 | 14 days | $15K-$50K | Filing |
| Jared MoskowitzDemocrat · House · FL | MRKMerck & Company, Inc. Common Stock | Sell | Child | Jan 15, 2025 | Feb 10, 2025 | 26 days | $1K-$15K | Filing |
| Jared MoskowitzDemocrat · House · FL | MRKMerck & Company, Inc. Common Stock | Sell | Child | Jan 15, 2025 | Feb 10, 2025 | 26 days | $1K-$15K | Filing |
| Jared MoskowitzDemocrat · House · FL | MRKMerck & Company, Inc. Common Stock | Sell | Self | Jan 15, 2025 | Feb 10, 2025 | 26 days | $1K-$15K | Filing |
| Byron DonaldsRepublican · House · FL | MRKMerck & Company, Inc. Common Stock | Sell | Self | Jan 16, 2025 | Feb 10, 2025 | 25 days | $1K-$15K | Filing |
| Byron DonaldsRepublican · House · FL | MRKMerck & Company, Inc. Common Stock | Sell | Spouse | Jan 16, 2025 | Feb 10, 2025 | 25 days | $1K-$15K | Filing |
| Jared MoskowitzDemocrat · House · FL | MRKMerck & Company, Inc. Common Stock | Buy | Child | Nov 8, 2024 | Dec 9, 2024 | 31 days | $1K-$15K | Filing |
| Jonathan L. JacksonDemocrat · House · IL | MRKMerck & Company, Inc. Common Stock | Sell | Joint | Sep 24, 2024 | Oct 11, 2024 | 17 days | $15K-$50K | Filing |
| John JamesRepublican · House · MI | MRKMerck & Company, Inc. Common Stock | Sell | Self | Sep 4, 2024 | Sep 6, 2024 | 2 days | $1K-$15K | Filing |
| John JamesRepublican · House · MI | MRKMerck & Company, Inc. Common Stock | Buy | Self | Nov 10, 2023 | Sep 2, 2024 | 297 daysLate | $1K-$15K | Filing |
| Jared MoskowitzDemocrat · House · FL | MRKMerck & Company, Inc. Common Stock | Buy | Self | Jul 14, 2023 | Aug 21, 2024 | 404 daysLate | $1K-$15K | Filing |
| Jared MoskowitzDemocrat · House · FL | MRKMerck & Company, Inc. Common Stock | Buy | Self | Sep 1, 2023 | Aug 21, 2024 | 355 daysLate | $1K-$15K | Filing |
| Scott FranklinRepublican · House · FL | MRKMerck & Company, Inc. Common Stock | Buy | Self | Aug 2, 2024 | Aug 20, 2024 | 18 days | $1K-$15K | Filing |
Source: U.S. House Clerk and Senate Office of Public Records (eFD). Amounts are the ranges filers report.