Merck & Co., Inc. (MRK)
Data as of , from SEC Form 4 filings.
See up to 3 months of MRK. The 7-day demo opens the 1M and 3M ranges and puts MRK on your watchlist.
Start 7-day demoLatest MRK insider trades
About Merck & Co., Inc. (MRK)
Merck & Co., Inc. files with the SEC under CIK 0000310158 and is classified as pharmaceutical preparations. It is grouped with Health Care companies on this site.
MRK Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 17 | 228,238 | $29.98M |
| Grant or award | 3 | 374.2 | |
| Option exercise | 16 | 252,960 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
MRK insider transactions (Form 4)
6199 Form 4 filings on record, the earliest from Oct 1, 2024, newest first. Filing history page 1 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
 Christine E. Seidman - Director | Grant or award | Phantom Stock | 55.91 | $145.31 | $8K | |
| Surendralal Lanca Karsanbhai - Director | Grant or award | Phantom Stock | 111.83 | $145.31 | $16K | |
 Mary Ellen Coe - Director | Grant or award | Phantom Stock | 206.46 | $145.31 | $30K | |
| Chirfi Guindo - Officer | Open-market sale | Common Stock | 10,000 | $135.00 | $1.35M | |
| Jennifer Zachary - Officer | Option exercise | Common Stock | 41,494 | $117.89 | $4.89M | |
| Jennifer Zachary - Officer | Option exercise | Common Stock | 13,433 | $84.71 | $1.14M | |
| Jennifer Zachary - Officer | Open-market sale | Common Stock | 80,315 | $133.46 footnote F1 | $10.72M | |
| Jennifer Zachary - Officer | Option exercise | Stock Option (Right to Buy) | 41,494 | $0.00 | - | |
| Jennifer Zachary - Officer | Option exercise | Stock Option (Right to Buy) | 13,433 | $0.00 | - | |
| ||||||
| Richard R. Deluca - Officer | Open-market sale | Common Stock | 20,784 | $130.43 footnote F1 | $2.71M | |
| Richard R. Deluca - Officer | Open-market sale | Common Stock | 7,410 | $131.33 footnote F2 | $973K | |
| Richard R. Deluca - Officer | Open-market sale | Common Stock | 5,427 | $132.35 footnote F3 | $718K | |
| Richard R. Deluca - Officer | Open-market sale | Common Stock | 11,099 | $131.61 footnote F4 | $1.46M | |
| Richard R. Deluca - Officer | Open-market sale | Common Stock | 600 | $132.04 footnote F5 | $79K | |
| ||||||
| Richard R. Deluca - Officer | Open-market sale | Common Stock | 805 | $131.02 footnote F1 | $105K | |
| Richard R. Deluca - Officer | Open-market sale | Common Stock | 4,945 | $130.23 footnote F2 | $644K | |
| Richard R. Deluca - Officer | Open-market sale | Common Stock | 300 | $131.02 footnote F3 | $39K | |
| ||||||
 David R. Maraldo - Officer | Option exercise | Common Stock | 6,311 | $73.73 | $465K | |
| David R. Maraldo - Officer | Open-market sale | Common Stock | 6,311 | $128.72 footnote F1 | $812K | |
| David R. Maraldo - Officer | Option exercise | Common Stock | 9,709 | $87.10 | $846K | |
| David R. Maraldo - Officer | Open-market sale | Common Stock | 9,709 | $128.72 footnote F1 | $1.25M | |
| David R. Maraldo - Officer | Option exercise | Common Stock | 2,686 | $84.71 | $228K | |
| David R. Maraldo - Officer | Open-market sale | Common Stock | 2,686 | $128.72 footnote F1 | $346K | |
| David R. Maraldo - Officer | Option exercise | Stock Option (Right to Buy) | 6,311 | $0.00 | - | |
| David R. Maraldo - Officer | Option exercise | Stock Option (Right to Buy) | 9,709 | $0.00 | - | |
| David R. Maraldo - Officer | Option exercise | Stock Option (Right to Buy) | 2,686 | $0.00 | - | |
| ||||||
| David Michael Williams - Officer | Option exercise | Common Stock | 4,600 | $77.62 | $357K | |
| David Michael Williams - Officer | Open-market sale | Common Stock | 4,600 | $128.77 footnote F1 | $592K | |
| David Michael Williams - Officer | Option exercise | Common Stock | 13,542 | $75.36 | $1.02M | |
| David Michael Williams - Officer | Open-market sale | Common Stock | 13,542 | $128.77 footnote F1 | $1.74M | |
| David Michael Williams - Officer | Option exercise | Common Stock | 34,705 | $73.73 | $2.56M | |
| David Michael Williams - Officer | Open-market sale | Common Stock | 34,705 | $128.77 footnote F1 | $4.47M | |
| David Michael Williams - Officer | Option exercise | Stock Option (Right to Buy) | 4,600 | $0.00 | - | |
| David Michael Williams - Officer | Option exercise | Stock Option (Right to Buy) | 13,542 | $0.00 | - | |
| David Michael Williams - Officer | Option exercise | Stock Option (Right to Buy) | 34,705 | $0.00 | - | |
| ||||||
| Chirfi Guindo - Officer | Open-market sale | Common Stock | 15,000 | $131.00 | $1.97M | |
| Christine E. Seidman - Director | Grant or award | Phantom Stock | 63.23 | $128.50 | $8K | |
| Surendralal Lanca Karsanbhai - Director | Grant or award | Phantom Stock | 126.46 | $128.50 | $16K | |
| Mary Ellen Coe - Director | Grant or award | Phantom Stock | 233.46 | $128.50 | $30K | |
 Kathy J. Warden - Director | Grant or award | Phantom Stock | 1,853 | $118.72 | $220K | |
| Surendralal Lanca Karsanbhai - Director | Grant or award | Phantom Stock | 1,853 | $118.72 | $220K | |
| Mary Ellen Coe - Director | Grant or award | Phantom Stock | 1,853 | $118.72 | $220K | |
| Inge G. Thulin - Director | Grant or award | Phantom Stock | 1,853 | $118.72 | $220K | |
| Christine E. Seidman - Director | Grant or award | Phantom Stock | 1,853 | $118.72 | $220K | |
 Patricia F. Russo - Director | Grant or award | Phantom Stock | 1,853 | $118.72 | $220K | |
| Paul Rothman - Director | Grant or award | Phantom Stock | 1,853 | $118.72 | $220K | |
 Stephen Mayo - Director | Grant or award | Phantom Stock | 1,853 | $118.72 | $220K | |
 Risa J. Lavizzo-Mourey - Director | Grant or award | Phantom Stock | 1,853 | $118.72 | $220K | |
 Thomas H. Glocer - Director | Grant or award | Phantom Stock | 1,853 | $118.72 | $220K | |
 Pamela J. Craig - Director | Grant or award | Phantom Stock | 1,853 | $118.72 | $220K | |
| Douglas M. Baker Jr. - Director | Grant or award | Phantom Stock | 1,853 | $118.72 | $220K | |
| Jennifer Zachary - Officer | Grant or award | Restricted Stock Unit | 12,064 | $0.00 | - | |
| Jennifer Zachary - Officer | Grant or award | Stock Option (Right to Buy) | 35,312 | $0.00 | - | |
| David Michael Williams - Officer | Grant or award | Restricted Stock Unit | 4,640 | $0.00 | - | |
| David Michael Williams - Officer | Grant or award | Stock Option (Right to Buy) | 13,582 | $0.00 | - | |
| Caroline Litchfield - Officer | Grant or award | Restricted Stock Unit | 15,908 | $0.00 | - | |
| Caroline Litchfield - Officer | Grant or award | Stock Option (Right to Buy) | 46,566 | $0.00 | - | |
| Dean Y. Li - Officer | Grant or award | Restricted Stock Unit | 19,885 | $0.00 | - | |
| Dean Y. Li - Officer | Grant or award | Stock Option (Right to Buy) | 58,207 | $0.00 | - | |
| Betty D. Larson - Officer | Grant or award | Restricted Stock Unit | 7,954 | $0.00 | - | |
| Betty D. Larson - Officer | Grant or award | Stock Option (Right to Buy) | 23,283 | $0.00 | - | |
Item 5.02, 9.01
Item 2.02, 9.01
Item 5.07
Item 8.01, 9.01
Recent MRK Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| CHIRFI GUINDO | Officer | 10,000 | $1.35M | View on EDGAR | |
| JENNIFER L ZACHARY | Officer | 80,315 | $10.72M |
Stock trades in MRK disclosed by members of the U.S. House in the last 12 months, newest first. Values are the ranges as filed.
| Member | Type | Traded | Disclosed | Value range | Owner | Days to disclose | Filing |
|---|---|---|---|---|---|---|---|
 Maria Elvira SalazarRepublican, FL-27 | Sale (partial) |
MRK insider trading FAQ
What is the latest insider trade for MRK?
Merck & Co., Inc. (MRK) had 10 insider filings in the last 90 days, with the most recent on 2026-10-01. The full record for MRK runs to 99 Form 4 filings, the earliest from 2024-10-01. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying MRK stock?
No insider purchases of MRK were filed in the last 90 days.
How many insiders are selling MRK stock?
17 insider sales of MRK were filed in the last 90 days, totaling $29.98M.
Where can I see MRK SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects MRK Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Health Care companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Christine E. Seidman view on EDGAR
- - Surendralal Lanca Karsanbhai view on EDGAR
- - Mary Ellen Coe view on EDGAR
- - Chirfi Guindo view on EDGAR
- - Jennifer Zachary view on EDGAR
- - Richard R. Deluca view on EDGAR
- - Richard R. Deluca view on EDGAR
- - David R. Maraldo view on EDGAR
- - David Michael Williams view on EDGAR
Related companies with recent insider activity
Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Health Care
- Where MRK's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
Follow MRK with a 7-day demo
- MRK on your watchlist
- Every MRK Form 4 filing on record
- Up to 3 months of MRK price history
- The daily trading plan of ranked insider buys, on a delay, with the plan archive
Start 7-day demoCard required. Your card is never charged for the demo.
