Alphatec Holdings, Inc. — DEFA14A Filings
16 DEFA14A filings on record
This page lists all DEFA14A 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 16 DEFA14A 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 |
|---|---|---|---|---|
| DEFA14A | DEFA14A | 0000950170-25-067039 | May 8, 2025 | — |
| DEFA14A | DEFA14A | 0000950170-25-058740 | Apr 25, 2025 | — |
| DEFA14A | DEFA14A | 0000950170-24-049253 | Apr 26, 2024 | — |
| DEFA14A | DEFA14A | 0000950170-23-015842 | Apr 28, 2023 | — |
| DEFA14A | DEFA14A | 0001564590-22-016518 | Apr 28, 2022 | — |
| DEFA14A | DEFA14A | 0001564590-21-021964 | Apr 29, 2021 | — |
| DEFA14A | DEFA14A | 0001564590-20-019256 | Apr 28, 2020 | — |
| DEFA14A | DEFA14A | 0001564590-19-019676 | May 17, 2019 | — |
| DEFA14A | DEFA14A | 0001193125-17-160876 | May 5, 2017 | — |
| DEFA14A | DEFA14A | 0001350653-16-000091 | Jun 22, 2016 | — |
| DEFA14A | DEFA14A | 0001193125-15-190180 | May 15, 2015 | — |
| DEFA14A | DEFA14A | 0001193125-13-254755 | Jun 11, 2013 | — |
| DEFA14A | DEFA14A | 0001193125-13-254749 | Jun 11, 2013 | — |
| DEFA14A | FORM 8-K | 0001193125-09-258139 | Dec 22, 2009 | — |
| DEFA14A | SOLICITING MATERIAL UNDER RULE 14A-12 | 0001193125-09-255152 | Dec 18, 2009 | — |
| DEFA14A | SOLICITING MATERIAL UNDER RULE 14A-12 | 0001193125-09-255151 | Dec 18, 2009 | — |