“...pleasure and pain, they come and go and don't last... bear them patiently”—Gita
21 members of Congress have reported 59 trades in Merck & Co. (MRK) since 2024: 31 buys and 28 sells. The most active was Rep. Gilbert Ray Cisneros, Jr. (8 trades); the latest was Rep. Maria Elvira Salazar, who sold $1K–$15K on Sep 24, 2026. 21 of these members have a ranked hit rate (10+ scored trades). This is a record of public disclosures, not a recommendation.
5 older trades (traded before 2024, disclosed later) are listed in the table but not plotted.
| Member · hit rate | Action | Traded | Reported amount | Disclosed · lag | This trade vs SPY (90 d) | SEC filings ±30 days | Source |
|---|---|---|---|---|---|---|---|
| MSRep. Maria Elvira Salazar R-FL27 33% hit · 96 Financial ServicesForeign Affairs | SELL (partial) | Sep 24, 2026 | $1K–$15K | Oct 7, 2026 13 days | — | 8-K 10-13 · 3 Form 4 | |
| MSRep. Maria Elvira Salazar R-FL27 33% hit · 96 Financial ServicesForeign Affairs | BUY | Aug 19, 2026 | $15K–$50K | Sep 9, 2026 21 days | — | 8-K 08-04 · 7 Form 4 | |
| MSRep. Maria Elvira Salazar R-FL27 33% hit · 96 Financial ServicesForeign Affairs | BUY | Aug 19, 2026 | $15K–$50K | Sep 9, 2026 21 days | — | 8-K 08-04 · 7 Form 4 | |
| AASen. Alan Armstrong R-OK 80% hit · 692 Health, Education, Labor, and PensionsIndian Affairs | SELL | Mar 27, 2026 | $15K–$50K | Jul 21, 2026 116 days ⚠ over 45 | +10.9% | 3 Form 4 | eFD report |
| JGRep. Josh Gottheimer D-NJ05 · JT 48% hit · 855 House Permanent Select IntelligenceFinancial Services | BUY | Feb 4, 2026 | $1K–$15K | Mar 16, 2026 40 days | -9.9% | 8-K 02-03 · 26 Form 4 | |
| GCRep. Gilbert Ray Cisneros, Jr. D-CA31 46% hit · 1163 Armed ServicesSmall Business | BUY | Dec 19, 2025 | $1K–$15K | Jan 12, 2026 24 days | +16.0% | 8-K 12-04 · 3 Form 4 | |
| JJRep. Julie Johnson D-TX32 · JT 49% hit · 461 Joint Committee of Congress on the LibraryHomeland SecurityForeign AffairsHouse Administration | SELL | Dec 18, 2025 | $1K–$15K | Jan 15, 2026 28 days | -15.9% | 8-K 12-04 · 3 Form 4 | |
| GCRep. Gilbert Ray Cisneros, Jr. D-CA31 46% hit · 1163 Armed ServicesSmall Business | BUY | Nov 18, 2025 | $1K–$15K | Dec 15, 2025 27 days | +22.6% | 8-K 12-04 8-K 10-30 · 2 Form 4 | |
| JJRep. Julie Johnson D-TX32 · JT 49% hit · 461 Joint Committee of Congress on the LibraryHomeland SecurityForeign AffairsHouse Administration | SELL (partial) | Nov 13, 2025 | $1K–$15K | Dec 11, 2025 28 days | -25.4% | 8-K 12-04 8-K 10-30 · 2 Form 4 | |
| VHRep. Val T. Hoyle D-OR04 · SP 40% hit · 240 Natural ResourcesTransportation and Infrastructure | SELL | Sep 23, 2025 | $1K–$15K | Oct 10, 2025 17 days | -27.7% | 8-K 09-09 · 3 Form 4 | |
| MGRep. Marjorie Taylor Greene GA14 55% hit · 402 | BUY | Aug 28, 2025 | $1K–$15K | Aug 29, 2025 1 days | +21.0% | 8-K 09-09 8-K 07-29 · 2 Form 4 | |
| JJRep. Julie Johnson D-TX32 · JT 49% hit · 461 Joint Committee of Congress on the LibraryHomeland SecurityForeign AffairsHouse Administration | SELL (partial) | Aug 14, 2025 | $1K–$15K | Sep 11, 2025 28 days | -4.5% | 8-K 09-09 8-K 07-29 · 2 Form 4 | |
| GCRep. Gilbert Ray Cisneros, Jr. D-CA31 46% hit · 1163 Armed ServicesSmall Business | BUY | Aug 5, 2025 | $1K–$15K | Sep 12, 2025 38 days | -6.7% | 8-K 07-29 · 2 Form 4 | |
| LMRep. Lisa C. McClain R-MI09 · SP 36% hit · 735 Financial ServicesEducation and Workforce | SELL | Aug 4, 2025 | $1K–$15K | Sep 12, 2025 39 days | +5.0% | 8-K 07-29 · 2 Form 4 | |
| RTRep. Ritchie Torres D-NY15 41% hit · 82 Financial ServicesHouse Select the Strategic Competition Between the United States and the Chinese Communist Party | SELL | Jul 11, 2025 | $1K–$15K | Aug 20, 2025 40 days | +2.7% | 8-K 07-29 · 5 Form 4 | |
| LMRep. Lisa C. McClain R-MI09 · SP 36% hit · 735 Financial ServicesEducation and Workforce | BUY | Jun 24, 2025 | $1K–$15K | Aug 13, 2025 50 days ⚠ over 45 | -9.8% | 8-K 05-29 · 15 Form 4 | |
| SFRep. Scott Franklin R-FL18 · JT 76% hit · 119 Science, Space, and TechnologyAppropriations | SELL | Jun 16, 2025 | $1K–$15K | Jul 14, 2025 28 days | +9.6% | 8-K 05-29 · 15 Form 4 | |
| JJRep. Julie Johnson D-TX32 · JT 49% hit · 461 Joint Committee of Congress on the LibraryHomeland SecurityForeign AffairsHouse Administration | BUY | Jun 13, 2025 | $1K–$15K | Jul 14, 2025 31 days | -5.9% | 8-K 05-29 · 15 Form 4 | |
| GCRep. Gilbert Ray Cisneros, Jr. D-CA31 46% hit · 1163 Armed ServicesSmall Business | SELL | May 30, 2025 | $1K–$15K | Jun 6, 2025 7 days | +1.8% | 8-K 05-29 · 29 Form 4 | |
| RBRep. Robert P. Bresnahan, Jr. R-PA08 48% hit · 545 Transportation and InfrastructureAgricultureSmall Business | SELL | May 15, 2025 | $15K–$50K | May 31, 2025 16 days | -1.4% | 8-K 05-29 8-K 04-24 · 30 Form 4 | |
| MGRep. Marjorie Taylor Greene GA14 55% hit · 402 | BUY | May 5, 2025 | $1K–$15K | May 6, 2025 1 days | -15.6% | 8-K 05-29 8-K 04-24 · 30 Form 4 | |
| GCRep. Gilbert Ray Cisneros, Jr. D-CA31 46% hit · 1163 Armed ServicesSmall Business | BUY | Apr 29, 2025 | $1K–$15K | May 6, 2025 7 days | -15.7% | 8-K 05-29 8-K 04-24 · 21 Form 4 | |
| BWRep. Bruce Westerman R-AR04 56% hit · 118 Natural ResourcesTransportation and Infrastructure | SELL | Apr 21, 2025 | $1K–$15K | May 12, 2025 21 days | +20.5% | 8-K 04-24 · 21 Form 4 | |
| JSRep. Jefferson Shreve R-IN06 51% hit · 417 Appropriations | SELL | Apr 17, 2025 | $15K–$50K | May 8, 2025 21 days | +12.9% | 8-K 04-24 · 21 Form 4 | |
| MGRep. Marjorie Taylor Greene GA14 55% hit · 402 | BUY | Apr 9, 2025 | $1K–$15K | Apr 11, 2025 2 days | -13.7% | 8-K 04-24 · 21 Form 4 | |
| RBRep. Robert P. Bresnahan, Jr. R-PA08 48% hit · 545 Transportation and InfrastructureAgricultureSmall Business | BUY | Apr 8, 2025 | $15K–$50K | May 8, 2025 30 days | -22.5% | 8-K 04-24 · 21 Form 4 | |
| GCRep. Gilbert Ray Cisneros, Jr. D-CA31 46% hit · 1163 Armed ServicesSmall Business | SELL (partial) | Mar 31, 2025 | $15K–$50K | Apr 7, 2025 7 days | +22.3% | 8-K 04-24 · 4 Form 4 | |
| KMRep. Kelly Morrison D-MN03 64% hit · 58 Veterans' AffairsSmall Business | SELL (partial) | Mar 20, 2025 | $1K–$15K | Apr 11, 2025 22 days | +21.9% | 4 Form 4 | |
| SBRep. Sheri Biggs R-SC03 · SP 53% hit · 76 Science, Space, and TechnologyHomeland SecurityForeign Affairs | SELL | Mar 19, 2025 | $15K–$50K | Oct 5, 2025 200 days ⚠ over 45 | +22.1% | 4 Form 4 | |
| BWRep. Bruce Westerman R-AR04 56% hit · 118 Natural ResourcesTransportation and Infrastructure | BUY | Mar 3, 2025 | $1K–$15K | Apr 16, 2025 44 days | -19.7% | 8-K 02-04 · 9 Form 4 | |
| GCRep. Gilbert Ray Cisneros, Jr. D-CA31 46% hit · 1163 Armed ServicesSmall Business | BUY | Feb 26, 2025 | $15K–$50K | Mar 6, 2025 8 days | -12.6% | 8-K 02-04 · 17 Form 4 | |
| RBRep. Robert P. Bresnahan, Jr. R-PA08 48% hit · 545 Transportation and InfrastructureAgricultureSmall Business | SELL | Feb 25, 2025 | $15K–$50K | Mar 27, 2025 30 days | +14.6% | 8-K 02-04 · 17 Form 4 | |
| JSRep. Jefferson Shreve R-IN06 51% hit · 417 Appropriations | BUY | Feb 24, 2025 | $15K–$50K | Mar 9, 2025 13 days | -14.0% | 8-K 02-04 · 17 Form 4 | |
| JGRep. Josh Gottheimer D-NJ05 · JT 48% hit · 855 House Permanent Select IntelligenceFinancial Services | SELL | Jan 27, 2025 | $15K–$50K | Feb 10, 2025 14 days | +7.0% | 8-K 02-04 · 21 Form 4 | |
| GCRep. Gilbert Ray Cisneros, Jr. D-CA31 46% hit · 1163 Armed ServicesSmall Business | SELL | Jan 24, 2025 | $1K–$15K | Feb 11, 2025 18 days | +6.4% | 8-K 02-04 · 21 Form 4 | |
| JJRep. Julie Johnson D-TX32 · JT 49% hit · 461 Joint Committee of Congress on the LibraryHomeland SecurityForeign AffairsHouse Administration | BUY | Jan 17, 2025 | $1K–$15K | Feb 12, 2025 26 days | -8.4% | 8-K 02-04 · 20 Form 4 | |
| BDRep. Byron Donalds R-FL19 42% hit · 127 Oversight and Government ReformFinancial Services | SELL | Jan 16, 2025 | $1K–$15K | Feb 10, 2025 25 days | +12.9% | 8-K 02-04 · 20 Form 4 | |
| BDRep. Byron Donalds R-FL19 · SP 42% hit · 127 Oversight and Government ReformFinancial Services | SELL | Jan 16, 2025 | $1K–$15K | Feb 10, 2025 25 days | +12.9% | 8-K 02-04 · 20 Form 4 | |
| JMRep. Jared Moskowitz D-FL23 · DC 44% hit · 370 the JudiciaryForeign AffairsHouse Select Subcommittee to Investigate the Remaining Questions Surrounding January 6, 2021 | SELL | Jan 15, 2025 | $1K–$15K | Feb 10, 2025 26 days | +12.4% | 8-K 02-04 · 20 Form 4 | |
| JMRep. Jared Moskowitz D-FL23 · DC 44% hit · 370 the JudiciaryForeign AffairsHouse Select Subcommittee to Investigate the Remaining Questions Surrounding January 6, 2021 | SELL | Jan 15, 2025 | $1K–$15K | Feb 10, 2025 26 days | +12.4% | 8-K 02-04 · 20 Form 4 | |
| JMRep. Jared Moskowitz D-FL23 44% hit · 370 the JudiciaryForeign AffairsHouse Select Subcommittee to Investigate the Remaining Questions Surrounding January 6, 2021 | SELL | Jan 15, 2025 | $1K–$15K | Feb 10, 2025 26 days | +12.4% | 8-K 02-04 · 20 Form 4 | |
| JMRep. Jared Moskowitz D-FL23 · DC 44% hit · 370 the JudiciaryForeign AffairsHouse Select Subcommittee to Investigate the Remaining Questions Surrounding January 6, 2021 | BUY | Nov 8, 2024 | $1K–$15K | Dec 9, 2024 31 days | -15.8% | 8-K 11-22 8-K 10-31 | |
| VHRep. Val T. Hoyle D-OR04 · SP 40% hit · 240 Natural ResourcesTransportation and Infrastructure | BUY | Oct 29, 2024 | $1K–$15K | Sep 12, 2025 318 days ⚠ over 45 | -8.6% | 8-K 11-22 8-K 10-31 · 3 Form 4 | |
| RTRep. Ritchie Torres D-NY15 41% hit · 82 Financial ServicesHouse Select the Strategic Competition Between the United States and the Chinese Communist Party | BUY | Sep 26, 2024 | $1K–$15K | Aug 20, 2025 328 days ⚠ over 45 | -16.8% | 3 Form 4 | |
| JJRep. Jonathan L. Jackson D-IL01 · JT 25% hit · 105 AgricultureForeign Affairs | SELL | Sep 24, 2024 | $15K–$50K | Oct 11, 2024 17 days | +17.7% | 3 Form 4 | |
| JJRep. John James R-MI10 48% hit · 147 Energy and Commerce | SELL | Sep 4, 2024 | $1K–$15K | Sep 6, 2024 2 days | +21.7% | 4 Form 4 | |
| SFRep. Scott Franklin R-FL18 · SP 76% hit · 119 Science, Space, and TechnologyAppropriations | BUY | Aug 7, 2024 | $1K–$15K | Jul 3, 2025 330 days ⚠ over 45 | -20.8% | 8-K 07-30 · 1 Form 4 | |
| SFRep. Scott Franklin R-FL18 76% hit · 119 Science, Space, and TechnologyAppropriations | BUY | Aug 2, 2024 | $1K–$15K | Aug 20, 2024 18 days | -17.9% | 8-K 07-30 · 1 Form 4 | |
| KMRep. Kathy Manning NC06 · SP 39% hit · 166 | BUY | Jul 2, 2024 | $1K–$15K | Aug 16, 2024 45 days | -15.6% | 8-K 07-30 · 14 Form 4 | |
| JGRep. Josh Gottheimer D-NJ05 · JT 48% hit · 855 House Permanent Select IntelligenceFinancial Services | SELL (partial) | Jun 21, 2024 | $1K–$15K | Jul 9, 2024 18 days | +15.2% | 8-K 05-30 · 14 Form 4 | |
| MBRep. Michael C. Burgess TX26 49% hit · 31 | SELL (partial) | Apr 10, 2024 | $1K–$15K | May 2, 2024 22 days | +8.7% | 8-K 04-25 · 23 Form 4 | |
| KMRep. Kathy Manning NC06 · SP 39% hit · 166 | BUY | Jan 23, 2024 | $1K–$15K | Feb 6, 2024 14 days | +2.9% | 8-K 02-20 8-K 02-01 · 23 Form 4 | |
| KMRep. Kathy Manning NC06 · SP 39% hit · 166 | BUY | Jan 23, 2024 | $15K–$50K | Feb 6, 2024 14 days | +2.9% | 8-K 02-20 8-K 02-01 · 23 Form 4 | |
| KMRep. Kathy Manning NC06 · SP 39% hit · 166 | BUY | Jan 23, 2024 | $1K–$15K | Feb 6, 2024 14 days | +2.9% | 8-K 02-20 8-K 02-01 · 23 Form 4 | |
| JMRep. Jared Moskowitz D-FL23 · DC 44% hit · 370 the JudiciaryForeign AffairsHouse Select Subcommittee to Investigate the Remaining Questions Surrounding January 6, 2021 | BUY | Dec 28, 2023 | $1K–$15K | Jan 22, 2024 25 days | +11.4% | 8-K 11-28 · 15 Form 4 | |
| JMRep. Jared Moskowitz D-FL23 · DC 44% hit · 370 the JudiciaryForeign AffairsHouse Select Subcommittee to Investigate the Remaining Questions Surrounding January 6, 2021 | BUY | Dec 28, 2023 | $1K–$15K | Jan 22, 2024 25 days | +11.4% | 8-K 11-28 · 15 Form 4 | |
| JJRep. John James R-MI10 48% hit · 147 Energy and Commerce | BUY | Nov 10, 2023 | $1K–$15K | Sep 2, 2024 297 days ⚠ over 45 | +11.8% | 8-K 11-28 · 3 Form 4 | |
| JMRep. Jared Moskowitz D-FL23 44% hit · 370 the JudiciaryForeign AffairsHouse Select Subcommittee to Investigate the Remaining Questions Surrounding January 6, 2021 | BUY | Sep 1, 2023 | $1K–$15K | Aug 21, 2024 355 days ⚠ over 45 | -7.9% | — | |
| JMRep. Jared Moskowitz D-FL23 44% hit · 370 the JudiciaryForeign AffairsHouse Select Subcommittee to Investigate the Remaining Questions Surrounding January 6, 2021 | BUY | Jul 14, 2023 | $1K–$15K | Aug 21, 2024 404 days ⚠ over 45 | -0.0% | — |
Sources: U.S. House Clerk Periodic Transaction Reports (disclosures-clerk.house.gov) and U.S. Senate eFD Periodic Transaction Reports (efdsearch.senate.gov), filed 2024 to present; SEC EDGAR submissions (Form 4 and 8-K filing dates); committee assignments from the unitedstates/congress-legislators project (current membership); daily closing prices from Yahoo Finance's public chart data (query1.finance.yahoo.com), which is unofficial and may be revised. Built 2026-11-03.