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Northrop Grumman (NOC) 10K Form and Latest SEC Filings 2026

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Latest Northrop Grumman SEC Filings & Recent Activity

Northrop Grumman (NYSE:NOC) has submitted 663+ documents to the U.S. Securities and Exchange Commission (SEC) since 2017. For investors, these filings are the primary source of verified financial data — covering everything from annual revenue and debt levels in the 10-K, to material business events in 8-K current reports, to insider buying and selling activity in Form 4 disclosures. Key figures from these filings, including revenue, earnings, and cash flow, are summarized in Northrop Grumman's financial statements. The most recent filing was a Form 144 submitted on May 4, 2026.

Form 4
NORTHROP GRUMMAN CORP /DE/ Reports Ownership Change on Apr. 2, 2026

Form 4 filings disclose changes in stock ownership by company insiders, including purchases, sales, grants, and option exercises.

View insider ownership

8-K
Northrop Grumman Files Current Report on Apr. 21, 2026

An 8-K is filed when a material corporate event occurs, such as an acquisition, leadership change, or financial update.

View filing

10-Q
Northrop Grumman Files Quarterly Report on Apr. 21, 2026

The 10-Q contains Northrop Grumman's unaudited quarterly financial statements, revenue, earnings updates, and cash flow changes between annual reports.

View earnings history

Northrop Grumman SEC Filing History

Browse Northrop Grumman's complete SEC filing history using the filters below. Filter by form type - 10-K, 10-Q, 8-K, Form 4, and more - or set a custom date range to find a filing.

DateFilerForm TypeView
05/04/2026 4:19 PM
Northrop Grumman (1133421) Subject
WELSH MARK A III (1692554) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
04/30/2026 10:46 AM
Northrop Grumman (1133421) Subject
VANGUARD CAPITAL MANAGEMENT LLC (2100119) Filed by
Form SCHEDULE 13G
04/21/2026 4:06 PM
Northrop Grumman (1133421) Filer
Form S-3ASR
04/21/2026 3:03 PM
Northrop Grumman (1133421) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
04/21/2026 5:44 AM
Northrop Grumman (1133421) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/03/2026 3:09 PM
Northrop Grumman (1133421) Filer
Form ARS
04/03/2026 3:05 PM
Northrop Grumman (1133421) Filer
Form DEF 14A
04/02/2026 9:59 AM
KRISHNA ARVIND (1629898) Reporting
Northrop Grumman (1133421) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
04/02/2026 9:59 AM
Brown Marianne Catherine (1804183) Reporting
Northrop Grumman (1133421) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
03/02/2026 12:09 PM
Northrop Grumman (1133421) Subject
Simpson Kathryn G (1986485) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/27/2026 9:42 AM
Northrop Grumman (1133421) Subject
ROEDER ROSHAN S (1950117) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/20/2026 7:01 PM
Northrop Grumman (1133421) Issuer
Simpson Kathryn G (1986485) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/20/2026 3:47 PM
Northrop Grumman (1133421) Issuer
ROEDER ROSHAN S (1950117) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/20/2026 3:42 PM
Hardesty Michael A (1569355) Reporting
Northrop Grumman (1133421) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/19/2026 3:50 PM
Grady Christopher W. (2112505) Reporting
Northrop Grumman (1133421) Issuer
Form 3
Initial statement of beneficial ownership of securities  
02/19/2026 3:57 PM
Grady Christopher W. (2112505) Reporting
Northrop Grumman (1133421) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/19/2026 3:23 PM
Northrop Grumman (1133421) Issuer
ROEDER ROSHAN S (1950117) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/19/2026 3:24 PM
Northrop Grumman (1133421) Issuer
Simpson Kathryn G (1986485) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/19/2026 3:25 PM
Northrop Grumman (1133421) Issuer
Warden Kathy J (1559112) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/19/2026 2:14 PM
Hardesty Michael A (1569355) Reporting
Northrop Grumman (1133421) Subject
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/19/2026 9:42 AM
Northrop Grumman (1133421) Subject
ROEDER ROSHAN S (1950117) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/19/2026 9:03 AM
Northrop Grumman (1133421) Subject
Simpson Kathryn G (1986485) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/18/2026 3:42 PM
Davies Benjamin R. (2026085) Reporting
Northrop Grumman (1133421) Subject
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/17/2026 11:31 AM
Hardesty Michael A (1569355) Reporting
Northrop Grumman (1133421) Subject
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/17/2026 11:51 AM
Northrop Grumman (1133421) Subject
ROEDER ROSHAN S (1950117) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/17/2026 10:19 AM
Northrop Grumman (1133421) Subject
Simpson Kathryn G (1986485) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/13/2026 11:22 AM
Hardesty Michael A (1569355) Reporting
Northrop Grumman (1133421) Subject
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/06/2026 3:17 PM
Northrop Grumman (1133421) Subject
Warden Kathy J (1559112) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/03/2026 12:49 PM
Northrop Grumman (1133421) Issuer
WELSH MARK A III (1692554) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
01/27/2026 5:44 AM
Northrop Grumman (1133421) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
01/12/2026 3:01 PM
Greene John (1610732) Reporting
Northrop Grumman (1133421) Issuer
Form 3
Initial statement of beneficial ownership of securities  
01/07/2026 3:35 PM
Northrop Grumman (1133421) Issuer
Warden Kathy J (1559112) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
01/06/2026 10:48 AM
Northrop Grumman (1133421) Subject
Warden Kathy J (1559112) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
01/05/2026 2:41 PM
Brown Marianne Catherine (1804183) Reporting
Northrop Grumman (1133421) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
01/05/2026 2:43 PM
KRISHNA ARVIND (1629898) Reporting
Northrop Grumman (1133421) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
01/05/2026 10:49 AM
Northrop Grumman (1133421) Subject
Warden Kathy J (1559112) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
12/11/2025 7:51 AM
Northrop Grumman (1133421) Issuer
ROEDER ROSHAN S (1950117) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
12/09/2025 8:45 AM
Northrop Grumman (1133421) Subject
ROEDER ROSHAN S (1950117) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
12/08/2025 8:34 PM
Northrop Grumman (1133421) Issuer
ROEDER ROSHAN S (1950117) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
11/25/2025 11:46 AM
Northrop Grumman (1133421) Issuer
WELSH MARK A III (1692554) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
11/24/2025 5:31 PM
Northrop Grumman (1133421) Subject
WELSH MARK A III (1692554) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
11/06/2025 4:04 PM
Northrop Grumman (1133421) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
10/21/2025 3:04 PM
Northrop Grumman (1133421) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
10/21/2025 5:29 AM
Northrop Grumman (1133421) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
10/01/2025 12:44 PM
KRISHNA ARVIND (1629898) Reporting
Northrop Grumman (1133421) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
10/01/2025 12:45 PM
Brown Marianne Catherine (1804183) Reporting
Northrop Grumman (1133421) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
08/13/2025 11:49 AM
Capital International Investors (1562230) Filed by
Northrop Grumman (1133421) Subject
Form SCHEDULE 13G/A
07/22/2025 5:45 AM
Northrop Grumman (1133421) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/17/2025 1:17 PM
Jones Thomas H (1834674) Reporting
Northrop Grumman (1133421) Subject
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
07/08/2025 11:10 AM
Northrop Grumman (1133421) Issuer
WELSH MARK A III (1692554) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
07/01/2025 3:50 PM
Brown Marianne Catherine (1804183) Reporting
Northrop Grumman (1133421) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
07/01/2025 3:52 PM
KRISHNA ARVIND (1629898) Reporting
Northrop Grumman (1133421) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
06/16/2025 3:39 PM
Jones Thomas H (1834674) Reporting
Northrop Grumman (1133421) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
06/16/2025 3:42 PM
Fleming Robert J. (1995165) Reporting
Northrop Grumman (1133421) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
06/13/2025 4:14 PM
Northrop Grumman (1133421) Issuer
Warden Kathy J (1559112) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
06/13/2025 11:01 AM
Northrop Grumman (1133421) Subject
Warden Kathy J (1559112) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
06/13/2025 11:37 AM
Fleming Robert J. (1995165) Reporting
Northrop Grumman (1133421) Subject
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
06/13/2025 10:38 AM
Jones Thomas H (1834674) Reporting
Northrop Grumman (1133421) Subject
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
06/12/2025 12:32 PM
Northrop Grumman (1133421) Subject
Warden Kathy J (1559112) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
06/10/2025 10:04 AM
Northrop Grumman (1133421) Filer
Form 11-K
Annual reports of employee stock purchase, savings and similar plans pursuant to Section 15(d)  
06/10/2025 10:06 AM
Northrop Grumman (1133421) Filer
Form 11-K
Annual reports of employee stock purchase, savings and similar plans pursuant to Section 15(d)  
06/09/2025 10:02 AM
Northrop Grumman (1133421) Issuer
WELSH MARK A III (1692554) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
06/05/2025 6:18 PM
Northrop Grumman (1133421) Subject
WELSH MARK A III (1692554) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
06/05/2025 5:17 PM
Northrop Grumman (1133421) Issuer
ROEDER ROSHAN S (1950117) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
06/04/2025 9:36 AM
Northrop Grumman (1133421) Subject
ROEDER ROSHAN S (1950117) Reporting
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
05/30/2025 9:53 AM
Jones Thomas H (1834674) Reporting
Northrop Grumman (1133421) Subject
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
05/28/2025 3:42 PM
Northrop Grumman (1133421) Filer
Form 424B5
05/27/2025 7:48 AM
Northrop Grumman (1133421) Filer
Form 424B5
05/22/2025 3:34 PM
KRISHNA ARVIND (1629898) Reporting
Northrop Grumman (1133421) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
05/22/2025 3:36 PM
Northrop Grumman (1133421) Issuer
ROUGHEAD GARY (1543052) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
05/22/2025 3:38 PM
Northrop Grumman (1133421) Issuer
SCHOEWE THOMAS M (1161375) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
05/22/2025 3:40 PM
Northrop Grumman (1133421) Issuer
Turley James S (1580994) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
05/22/2025 3:42 PM
Northrop Grumman (1133421) Issuer
WELSH MARK A III (1692554) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
05/22/2025 3:43 PM
Northrop Grumman (1133421) Issuer
Ross Kimberly A. (1536350) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
05/22/2025 3:16 PM
Northrop Grumman (1133421) Issuer
WINSTON MARY A (1282797) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
05/14/2025 3:42 PM
Northrop Grumman (1133421) Filer
Form DEFA14A
(Data available from 1/1/2016 forward)

Northrop Grumman SEC Filings - Frequently Asked Questions

Northrop Grumman (NOC) has submitted 663+ filings to the SEC since 2017. You can browse the complete history or filter by form type using the tools above.

Northrop Grumman's fiscal year ends on December 31. The company typically files its 10-K annual report by the end of February, covering the prior fiscal year's financial results. Key financial data from these reports is available on Northrop Grumman's financial statements page.

The most recent filing was a Form 144 submitted on May 4, 2026. View the full filing using the link above.

SEC Filing Types: 10-K, 10-Q, 8-K and More

SEC filings are legally required disclosures that public companies submit to the U.S. Securities and Exchange Commission. Unlike press releases or earnings call transcripts, these documents are filed under legal obligation — meaning the financial data they contain is audited, standardized, and subject to penalties if materially false. For investors, that makes SEC filings the most reliable primary source available for evaluating a company's true financial position.

Yes. All SEC filings are publicly available through the SEC's EDGAR database and on financial research platforms like MarketBeat. Companies are required by law to make these disclosures accessible to all investors — meaning retail investors have access to the same source documents as institutional analysts.

A 10-K is an annual report containing audited financial statements and a full review of the company's business — it is the most comprehensive filing a company makes each year. A 10-Q is a shorter, unaudited quarterly update filed three times per year between annual reports. Investors typically use the 10-K for deep fundamental analysis and the 10-Q to track whether the company is on pace with its guidance mid-year.

The most important filing for fundamental investors. Filed once per year, the 10-K contains audited financial statements, revenue and earnings trends, debt obligations, risk factors, and management's own assessment of the business. Reading the risk factors section and comparing year-over-year financials can reveal issues that don't show up in analyst summaries.

An unaudited financial update filed three times per year (the 10-K covers Q4). Investors use 10-Qs to track whether guidance is on pace, monitor changes in cash flow or inventory, and catch any mid-year shifts in business conditions before they become headline news.

Filed within four business days of a material event — earnings releases, merger announcements, executive departures, or major asset sales. Because 8-Ks are filed before media coverage catches up, they are often the fastest way to get unfiltered information directly from the company on market-moving events.

Filed within two business days whenever an executive or director buys or sells company stock. Insider purchases — especially large or clustered buys — are often interpreted as a signal of management confidence. Insider selling is more ambiguous but worth monitoring for patterns, particularly around lock-up expirations or ahead of major announcements.


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This page (NYSE:NOC) was last updated on 5/12/2026 by MarketBeat.com Staff.
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