Key facts
- This page summarizes Chirfi Guindo's Form 4 filing for Merck & Co., Inc. (MRK).
- 1 reported transaction and 0 derivative rows are listed below.
- Accepted by SEC: 07 Aug 2026, 16:17.
Chirfi Guindo - 06 Aug 2026 Form 4 Insider Report for Merck & Co., Inc. (MRK)
- Reporting relationship
- EVP, Access, Policy & Comms
- Issuer ticker
- MRK
- Reported as of
- 06 Aug 2026
- Net transaction value
- -$1,965,000
- SEC form
- 4
- Accepted by SEC
- 07 Aug 2026, 16:17:06 UTC
- Prior SEC filing
- 05 Jun 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Kelly Grez, as attorney-in-fact for Chirfi Guindo
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Chirfi Guindo filed Form 4 for Merck & Co., Inc. (MRK) on 07 Aug 2026.
Change
- Previous filing in this sequence was filed on 05 Jun 2026.
- Current net transaction value: -$1,965,000.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001722753
Primary reporting owner
Guindo Chirfi
- Relationship
- EVP, Access, Policy & Comms
- Address
- MERCK & CO., INC., 126 EAST LINCOLN AVENUE, RAHWAY
- Signature
- /s/ Kelly Grez, as attorney-in-fact for Chirfi Guindo
- Signature date
- 07 Aug 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
MRK
transaction
Common Stock
Sale
- Transaction value
- $1,965,000
- Shares
- -15,000
- Change %
- -24%
- Price
- $131.00
- Shares after
- 46,613
- Date
- 06 Aug 2026
- Ownership
- Direct
* marks a reported price that did not pass the local price check.