Merck & Co., Inc. (MRK) insider trading.
In Q3 2026, insiders at Merck & Co., Inc. reported 25 non-derivative transactions on 11 Forms 3, 4 and 5: 0 open-market purchases and 17 sales worth $30.0M.
- Transactions
- 25
- Purchases (P)
- 0
- Sales (S)
- 17
- Net shares, P minus S
- -228,238
- Insiders
- 5
- Last filed
- 2026-08-13
Insiders
| Insider | Relationship | Transactions | Buys | Sales |
|---|---|---|---|---|
| DeLuca Richard R. | Officer · EVP&Pres, Merck Animal Heallth | 8 | 0 | 8 |
| Williams David Michael | Officer · EVP,Chief Info&Digital Officer | 6 | 0 | 3 |
| Maraldo David R. | Officer · EVP & Pres. MMD | 6 | 0 | 3 |
| Zachary Jennifer | Officer · EVP, General Counsel | 3 | 0 | 1 |
| Guindo Chirfi | Officer · EVP, Access, Policy & Comms | 2 | 0 | 2 |
Transactions
| Date | Insider | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-08-13 | Guindo Chirfi | S (D) | 10,000 | $135 | 36,613 | Form 4 |
| 2026-08-12 | Zachary Jennifer | M (A) | 41,494 | $117.89 | 112,391 | Form 4 |
| 2026-08-12 | Zachary Jennifer | S (D) | 80,315 | $133.46 | 45,509 | Form 4 |
| 2026-08-12 | Zachary Jennifer | M (A) | 13,433 | $84.71 | 125,824 | Form 4 |
| 2026-08-12 | DeLuca Richard R. | S (D) | 11,099 | $131.61 | 110,767 | Form 4 |
| 2026-08-12 | DeLuca Richard R. | S (D) | 600 | $132.04 | 110,167 | Form 4 |
| 2026-08-11 | DeLuca Richard R. | S (D) | 7,410 | $131.33 | 127,293 | Form 4 |
| 2026-08-11 | DeLuca Richard R. | S (D) | 5,427 | $132.35 | 121,866 | Form 4 |
| 2026-08-10 | DeLuca Richard R. | S (D) | 20,784 | $130.43 | 134,703 | Form 4 |
| 2026-08-06 | DeLuca Richard R. | S (D) | 805 | $131.02 | 160,732 | Form 4 |
| 2026-08-06 | DeLuca Richard R. | S (D) | 300 | $131.02 | 155,487 | Form 4 |
| 2026-08-06 | DeLuca Richard R. | S (D) | 4,945 | $130.23 | 155,787 | Form 4 |
| 2026-08-06 | Guindo Chirfi | S (D) | 15,000 | $131 | 46,613 | Form 4 |
| 2026-08-05 | Williams David Michael | M (A) | 34,705 | $73.73 | 66,421 | Form 4 |
| 2026-08-05 | Williams David Michael | S (D) | 34,705 | $128.77 | 31,716 | Form 4 |
| 2026-08-05 | Williams David Michael | M (A) | 13,542 | $75.36 | 45,258 | Form 4 |
| 2026-08-05 | Williams David Michael | S (D) | 4,600 | $128.77 | 31,716 | Form 4 |
| 2026-08-05 | Williams David Michael | M (A) | 4,600 | $77.62 | 36,316 | Form 4 |
| 2026-08-05 | Williams David Michael | S (D) | 13,542 | $128.77 | 31,716 | Form 4 |
| 2026-08-05 | Maraldo David R. | M (A) | 9,709 | $87.1 | 27,921 | Form 4 |
| 2026-08-05 | Maraldo David R. | S (D) | 9,709 | $128.72 | 18,212 | Form 4 |
| 2026-08-05 | Maraldo David R. | S (D) | 2,686 | $128.72 | 18,212 | Form 4 |
| 2026-08-05 | Maraldo David R. | S (D) | 6,311 | $128.72 | 18,212 | Form 4 |
| 2026-08-05 | Maraldo David R. | M (A) | 6,311 | $73.73 | 24,523 | Form 4 |
| 2026-08-05 | Maraldo David R. | M (A) | 2,686 | $84.71 | 20,898 | Form 4 |
Transaction codes in this quarter
Get MRK insider transactions through the API
curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=310158&limit=100" \
-H "Authorization: Bearer $SEC_API_KEY"Insider trading API guide · MRK company page · Merck & Co., Inc. on SEC.gov
Questions
Are insiders buying or selling Merck & Co., Inc. (MRK)?
In Q3 2026, insiders at Merck & Co., Inc. reported 25 non-derivative transactions on 11 Forms 3, 4 and 5: 0 open-market purchases and 17 sales worth $30.0M. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.
Where do these Merck & Co., Inc. insider trades come from?
From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.
Plain-text version for agents and LLMs: /insider-trading/mrk.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.