Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0000310158-25-000010
Filing Date
2025-08-05
Accepted
2025-08-05 08:43:24
Documents
1
Period of Report
2025-08-04

Document Format Files

Seq Description Document Type Size
1 PRIMARY DOCUMENT form4.html 4  
1 PRIMARY DOCUMENT form4.xml 4 8006
  Complete submission text file 0000310158-25-000010.txt   9647
Mailing Address 126 EAST LINCOLN AVENUE P.O. BOX 2000 RAHWAY NJ 07065
Business Address 126 EAST LINCOLN AVENUE P.O. BOX 2000 RAHWAY NJ 07065 908-740-4000
Merck & Co., Inc. (Issuer) CIK: 0000310158 (see all company filings)

EIN.: 221918501 | State of Incorp.: NJ | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)

Mailing Address C/O BIOGEN INC. 225 BINNEY ST. CAMBRIDGE MA 02142
Business Address
Guindo Chirfi (Reporting) CIK: 0001722753 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-06571 | Film No.: 251182981