NORTHROP GRUMMAN CORP /DE/ — DEFA14A Filings
33 DEFA14A filings on record
This page lists all DEFA14A filings submitted to the SEC by NORTHROP GRUMMAN CORP /DE/ (NOC), sorted by most recent first. Each row links to the full filing on EdgarLookup. NORTHROP GRUMMAN CORP /DE/ has filed 33 DEFA14A documents with the SEC since 2017. To view all SEC filings by NORTHROP GRUMMAN CORP /DE/, see the full filings list.
All
10-K
10-K405
10-Q
11-K
11-K/A
144
25
25-NSE
3
3/A
4
4/A
424B2
424B3
424B5
425
5
8-A12B
8-A12B/A
8-K
8-K/A
ARS
CORRESP
DEF 14A
DEFA14A
DEFC14A
DFAN14A
EFFECT
FWP
NO ACT
POS AM
POSASR
PRE 14A
PREC14A
PREM14C
PREN14A
PRRN14A
PX14A6G
S-3
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-T
SC TO-T/A
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| DEFA14A | DEFA14A | 0001133421-25-000029 | May 14, 2025 | — |
| DEFA14A | DEFA14A | 0001133421-24-000028 | May 8, 2024 | — |
| DEFA14A | DEFA14A | 0001628280-23-017292 | May 10, 2023 | — |
| DEFA14A | DEFA14A | 0001133421-22-000018 | May 11, 2022 | — |
| DEFA14A | DEFA14A | 0001133421-22-000016 | May 10, 2022 | — |
| DEFA14A | DEFA14A | 0001133421-21-000032 | May 12, 2021 | — |
| DEFA14A | DEFA14A | 0001133421-20-000027 | May 14, 2020 | — |
| DEFA14A | DEFA14A | 0001133421-20-000025 | May 7, 2020 | — |
| DEFA14A | DEFA14A | 0001133421-20-000022 | May 5, 2020 | — |
| DEFA14A | DEFA14A | 0001133421-19-000027 | May 8, 2019 | — |
| DEFA14A | DEFA14A | 0001133421-19-000024 | May 1, 2019 | — |
| DEFA14A | DEFA14A | 0001133421-18-000015 | May 8, 2018 | — |
| DEFA14A | 8-K | 0001193125-17-309966 | Oct 13, 2017 | — |
| DEFA14A | DEFA14A | 0000950157-17-001306 | Sep 18, 2017 | — |
| DEFA14A | 8-K | 0000950157-17-001300 | Sep 18, 2017 | — |
| DEFA14A | DEFA14A | 0001133421-17-000022 | May 5, 2017 | — |
| DEFA14A | DEFA14A | 0001133421-16-000085 | May 5, 2016 | — |
| DEFA14A | DEFA14A | 0001133421-15-000029 | May 4, 2015 | — |
| DEFA14A | DEFA14A | 0001133421-15-000020 | Apr 8, 2015 | — |
| DEFA14A | DEFA14A | 0001133421-14-000027 | May 12, 2014 | — |
| DEFA14A | DEFA14A | 0001133421-13-000034 | May 13, 2013 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001133421-13-000030 | May 6, 2013 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-12-222081 | May 9, 2012 | — |
| DEFA14A | SCHEDULE 14A | 0001193125-12-211677 | May 4, 2012 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-12-153536 | Apr 6, 2012 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-12-153532 | Apr 6, 2012 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-11-139568 | May 13, 2011 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-11-092455 | Apr 8, 2011 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-11-092443 | Apr 8, 2011 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-10-080473 | Apr 9, 2010 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-10-080459 | Apr 9, 2010 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-09-113171 | May 15, 2009 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-09-107346 | May 11, 2009 | — |