Alphatec Holdings, Inc. — SCHEDULE 13D/A Filings
4 SCHEDULE 13D/A filings on record
This page lists all SCHEDULE 13D/A filings submitted to the SEC by Alphatec Holdings, Inc. (ATEC), sorted by most recent first. Each row links to the full filing on EdgarLookup. Alphatec Holdings, Inc. has filed 4 SCHEDULE 13D/A documents with the SEC since 2015. To view all SEC filings by Alphatec Holdings, Inc., see the full filings list.
All
10-K
10-K/A
10-Q
10-Q/A
144
3
3/A
4
4/A
424B3
424B4
424B5
424B8
425
5
8-A12G
8-K
8-K/A
ARS
CORRESP
CT ORDER
D
DEF 14A
DEFA14A
DEFM14A
EFFECT
FWP
NT 10-K
PRE 14A
PREM14A
PRER14A
S-1
S-1/A
S-3
S-3/A
S-3ASR
S-3MEF
S-8
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC TO-I
SC TO-I/A
SCHEDULE 13D/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13D/A | — | 0001193125-25-323158 | Dec 17, 2025 | — |
| SCHEDULE 13D/A | — | 0000950170-25-057646 | Apr 23, 2025 | — |
| SCHEDULE 13D/A | — | 0000950170-25-053434 | Apr 11, 2025 | — |
| SCHEDULE 13D/A | — | 0000950170-25-015038 | Feb 6, 2025 | — |