Mistras Group, Inc. — DEFA14A Filings
12 DEFA14A filings on record
This page lists all DEFA14A filings submitted to the SEC by Mistras Group, Inc. (MG), sorted by most recent first. Each row links to the full filing on EdgarLookup. Mistras Group, Inc. has filed 12 DEFA14A documents with the SEC since 2010. To view all SEC filings by Mistras Group, Inc., see the full filings list.
All
10-K
10-K/A
10-KT
10-Q
144
3
3/A
4
4/A
424B4
424B5
5
5/A
8-A12B
8-K
8-K/A
ARS
ARS/A
CERTNYS
CORRESP
DEF 14A
DEFA14A
EFFECT
FWP
NT 10-K
NT 10-Q
PRE 14A
S-1
S-1/A
S-3
S-3/A
S-8
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13D/A
SCHEDULE 13G
SD
SD/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| DEFA14A | DEFA14A | 0001140361-25-013051 | Apr 9, 2025 | — |
| DEFA14A | DEFA14A | 0001140361-24-017928 | Apr 4, 2024 | — |
| DEFA14A | FORM DEFA14A | 0001140361-23-017900 | Apr 12, 2023 | — |
| DEFA14A | FORM DEFA14A | 0001140361-22-014358 | Apr 13, 2022 | — |
| DEFA14A | DEFA14A | 0001140361-21-012774 | Apr 14, 2021 | — |
| DEFA14A | DEFA14A | 0001436126-20-000028 | May 5, 2020 | — |
| DEFA14A | DEFA 14A | 0001140361-20-008495 | Apr 9, 2020 | — |
| DEFA14A | DEFA14A | 0001140361-19-006610 | Apr 5, 2019 | — |
| DEFA14A | DEFA14A | 0001140361-18-017074 | Apr 4, 2018 | — |
| DEFA14A | ADDITIONAL DEFINITIVE PROXY SOLICITING MATERIALS | 0001626129-16-000820 | Sep 7, 2016 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001626129-15-000201 | Sep 9, 2015 | — |
| DEFA14A | DEFA14A | 0001104659-14-065729 | Sep 11, 2014 | — |