Merck & Co, Inc (MRK) insider trading
Every open-market stock purchase and sale by Merck & Co, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Healthcare.
Insider activity at a glance
- Jennifer Zachary (VP) and 4 others sold $30M in the last 90 days.
- Last insider buy: Inge G Thulin (Director), $250K, 20 months ago.
- Congress: Maria Elvira Salazar sold $1K to $15K, 4 weeks ago.
Last 12 months: insiders bought $0 (0 buys) and sold $72M (21 sales). Last close $149.88 on Oct 21, 2026.
Recent MRK insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 30, 2026 | Mary Ellen Coe (Director) | Bought (not open market) | $30K |
| Sep 30, 2026 | Surendralal Lanca Karsanbhai (Director) | Bought (not open market) | $16.3K |
| Sep 30, 2026 | Christine E Seidman (Director) | Bought (not open market) | $8.1K |
| Sep 24, 2026 | Maria Elvira Salazar (Representative) | Sold | $1K–15K |
| Aug 19, 2026 | Maria Elvira Salazar (Representative) | Bought | $15K–50K |
| Aug 19, 2026 | Maria Elvira Salazar (Representative) | Bought | $15K–50K |
| Aug 13, 2026 | Chirfi Guindo (VP) | Sold | $1.4M |
| Aug 12, 2026 | Jennifer Zachary (VP) | Sold | $10.7M |
| Aug 12, 2026 | Richard R. DeLuca (VP) | Sold | $1.5M |
| Aug 12, 2026 | Richard R. DeLuca (VP) | Sold | $79.2K |
| Aug 12, 2026 | Jennifer Zachary (VP) | Bought (not open market) | — |
| Aug 12, 2026 | Jennifer Zachary (VP) | Bought (not open market) | — |
| Aug 11, 2026 | Richard R. DeLuca (VP) | Sold | $973K |
| Aug 11, 2026 | Richard R. DeLuca (VP) | Sold | $718K |
| Aug 10, 2026 | Richard R. DeLuca (VP) | Sold | $2.7M |
| Aug 6, 2026 | Chirfi Guindo (VP) | Sold | $2M |
| Aug 6, 2026 | Richard R. DeLuca (VP) | Sold | $644K |
| Aug 6, 2026 | Richard R. DeLuca (VP) | Sold | $105K |
| Aug 6, 2026 | Richard R. DeLuca (VP) | Sold | $39.3K |
| Aug 5, 2026 | David Michael Williams (VP) | Sold | $4.5M |
| Aug 5, 2026 | David Michael Williams (VP) | Sold | $1.7M |
| Aug 5, 2026 | David R. Maraldo (VP) | Sold | $1.2M |
| Aug 5, 2026 | David R. Maraldo (VP) | Sold | $812K |
| Aug 5, 2026 | David Michael Williams (VP) | Sold | $592K |
| Aug 5, 2026 | David R. Maraldo (VP) | Sold | $346K |
Who's trading MRK
- Mary Ellen Coe, Director: other filings, last Sep 30, 2026
- Christine E Seidman, Director: other filings, last Sep 30, 2026
- Surendralal Lanca Karsanbhai, Director: other filings, last Sep 30, 2026
- Maria Elvira Salazar, Representative: bought $30K (2 buys), sold $8K (1 sale), last Sep 24, 2026
- Chirfi Guindo, C-suite exec: sold $8.2M (5 sales), last Aug 13, 2026
- Richard R. DeLuca, VP: sold $11.3M (9 sales), last Aug 12, 2026
- Jennifer Zachary, VP: sold $25.2M (4 sales), last Aug 12, 2026
- David R. Maraldo, VP: sold $2.4M (3 sales), last Aug 5, 2026
- David Michael Williams, VP: sold $8.1M (5 sales), last Aug 5, 2026
- Thomas H Glocer, Director: other filings, last May 29, 2026
- Paul Rothman, Director: other filings, last May 29, 2026
- Patricia F Russo, Director: other filings, last May 29, 2026
- Kathy J Warden, Director: other filings, last May 29, 2026
- Risa J Lavizzo-Mourey, Director: other filings, last May 29, 2026
- Douglas M Baker Jr, Director: other filings, last May 29, 2026
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