Merck & Co., Inc. — SC TO-T/A Filings
29 SC TO-T/A filings on record
This page lists all SC TO-T/A filings submitted to the SEC by Merck & Co., Inc. (MRK), sorted by most recent first. Each row links to the full filing on EdgarLookup. Merck & Co., Inc. has filed 29 SC TO-T/A documents with the SEC since 2017. To view all SEC filings by Merck & Co., Inc., see the full filings list.
All
10-K
10-K/A
10-K405
10-Q
10-Q/A
11-K
13F-HR
144
144/A
25-NSE
3
3/A
4
4/A
424B2
424B3
424B5
425
5
8-A12B
8-A12B/A
8-K
8-K/A
ARS
CERT
CERTNYS
CORRESP
CT ORDER
DEF 14A
DEFA14A
EFFECT
FWP
NO ACT
POSASR
PRE 14A
PX14A6G
S-3
S-3/A
S-3ASR
S-3MEF
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC TO-C
SC TO-T
SC TO-T/A
SCHEDULE 13G
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SC TO-T/A | SC TO-T/A | 0001193125-26-005513 | Jan 7, 2026 | — |
| SC TO-T/A | SC TO-T/A | 0001193125-25-326810 | Dec 19, 2025 | — |
| SC TO-T/A | SC TO-T/A | 0001193125-25-322941 | Dec 17, 2025 | — |
| SC TO-T/A | SC TO-T/A | 0001140361-20-000884 | Jan 16, 2020 | — |
| SC TO-T/A | SC TO-T/A | 0001140361-20-000326 | Jan 6, 2020 | — |
| SC TO-T/A | SC TO-T/A | 0001140361-20-000216 | Jan 3, 2020 | — |
| SC TO-T/A | SC TO-T/A | 0001140361-20-000057 | Jan 2, 2020 | — |
| SC TO-T/A | SC-TO-T/A | 0001140361-19-023460 | Dec 30, 2019 | — |
| SC TO-T/A | SC TO-T/A | 0001193125-19-095230 | Apr 2, 2019 | — |
| SC TO-T/A | SC TO-T/A | 0001193125-19-086616 | Mar 26, 2019 | — |
| SC TO-T/A | SC TO-T/A | 0001193125-19-076936 | Mar 15, 2019 | — |
| SC TO-T/A | AMENDMENT NO. 10 | 0001193125-15-016861 | Jan 22, 2015 | — |
| SC TO-T/A | AMENDMENT NO. 9 | 0001193125-15-015530 | Jan 21, 2015 | — |
| SC TO-T/A | SC TO-T AMENDMENT NO. 8 | 0001193125-15-011318 | Jan 15, 2015 | — |
| SC TO-T/A | SC TO-T AMENDMENT NO. 7 | 0001193125-15-009949 | Jan 14, 2015 | — |
| SC TO-T/A | SC TO-T AMENDMENT NO. 6 | 0001193125-15-008748 | Jan 13, 2015 | — |
| SC TO-T/A | SC TO-T/A | 0001193125-15-003281 | Jan 7, 2015 | — |
| SC TO-T/A | SC TO-T/A | 0001193125-14-457954 | Dec 31, 2014 | — |
| SC TO-T/A | SC TO-T AMENDMENT NO. 3 | 0001193125-14-457101 | Dec 30, 2014 | — |
| SC TO-T/A | SC TO-T/A AMENDMENT NO. 2 | 0001193125-14-451532 | Dec 23, 2014 | — |
| SC TO-T/A | SC TO-T AMENDMENT NO. 1 | 0001193125-14-450762 | Dec 22, 2014 | — |
| SC TO-T/A | AMENDMENT NO. 8 TO SCHEDULE TO | 0001193125-14-298086 | Aug 6, 2014 | — |
| SC TO-T/A | AMENDMENT NO. 7 | 0001193125-14-294453 | Aug 5, 2014 | — |
| SC TO-T/A | SC TO-T/A | 0001193125-14-278162 | Jul 24, 2014 | — |
| SC TO-T/A | SC TO-T/A | 0001193125-14-273827 | Jul 21, 2014 | — |
| SC TO-T/A | AMENDMENT NO. 4 | 0001193125-14-266498 | Jul 11, 2014 | — |
| SC TO-T/A | SC TO-T/A | 0001193125-14-260805 | Jul 3, 2014 | — |
| SC TO-T/A | AMENDMENT NO. 2 | 0001193125-14-253298 | Jun 27, 2014 | — |
| SC TO-T/A | SC TO-T/A | 0001193125-14-250568 | Jun 26, 2014 | — |