// company-profile
Merck & Co., Inc.
MRK// activity-summary
Recent insider activity is bullish. Over the last 30 days, 12 insiders purchased shares (net $2.6M). Buying was led by RUSSO PATRICIA F.
// 90-day insight
Over the last 90 days, Merck & Co., Inc. insiders bought $4.1M (45 transactions) and sold $757K (5 transactions).
- Most active insider: Smart Dalton E. III with 8 transactions totaling $127K.
- Largest single purchase: $1.3M by Larson Betty D on Apr 30, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Merck & Co., Inc. as of 2026-03-31
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 29, 2026 | RUSSO PATRICIA F | MRK | Award | 1,853.1 | $118.72 | $220K |
| May 29, 2026 | BAKER DOUGLAS M JR | MRK | Award | 1,853.1 | $118.72 | $220K |
| May 29, 2026 | Craig Pamela J. | MRK | Award | 1,853.1 | $118.72 | $220K |
| May 29, 2026 | GLOCER THOMAS H | MRK | Award | 1,853.1 | $118.72 | $220K |
| May 29, 2026 | Mayo Stephen | MRK | Award | 1,853.1 | $118.72 | $220K |
45 more transactions hidden
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