Transactions
19
Insider / NORTHROP GRUMMAN CORP /DE/
Brown Marianne Catherine
Director at NORTHROP GRUMMAN CORP /DE/
- Company
- NORTHROP GRUMMAN CORP /DE/
- First filing on record
- October 1, 2025
- Latest trade on record
- October 1, 2026
- SEC filings
- EDGAR ↗
Brown Marianne Catherine, Director at NORTHROP GRUMMAN CORP /DE/, has disclosed 19 transactions in SCHW, IBM, NOC and 1 more since October 1, 2025: 0 purchases (0 open-market buys) and 0 sales, worth about $881K at the reported prices. The latest was filed October 5, 2026, 4 days after the trade; 2 filings were late against the 2-business-day Form 4 deadline.
Open-market buys
0
Sales
0
Avg. disclosure lag
1.9d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months Brown Marianne Catherine reported 16 transactions that were neither a purchase nor a sale, such as stock awards, option exercises or shares withheld for tax.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
2 of 18 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| A | Grant or award | 19 | 12,042 | $881K |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 14 | 0 | 0 |
| 2025 | 5 | 0 | 0 |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| SCHW | Other A | October 1, 2026 | October 5, 2026 | 4d | 407 | — | — | derivative | Form 4 ↗ | |
| IBM | Other A | September 30, 2026 | October 1, 2026 | 1d | 415 | $220 | $91K | derivative | Form 4 ↗ | |
| NOC | Other A | September 30, 2026 | October 1, 2026 | 1d | 96 | $483 | $46K | Form 4 ↗ | ||
| SCHW | Other A | July 1, 2026 | July 6, 2026 | 5d | 418 | — | — | latederivative | Form 4 ↗ | |
| IBM | Other A | June 30, 2026 | July 2, 2026 | 2d | 325 | $281 | $91K | derivative | Form 4 ↗ | |
| NOC | Other A | June 30, 2026 | July 1, 2026 | 1d | 91 | $509 | $46K | Form 4 ↗ | ||
| SCHW | Other A | May 26, 2026 | May 27, 2026 | 1d | 3,977 | — | — | derivative | Form 4 ↗ | |
| SCHW | Other A | May 26, 2026 | May 27, 2026 | 1d | 1,602 | — | — | Form 4 ↗ | ||
| NOC | Other A | May 20, 2026 | May 21, 2026 | 1d | 349 | $552 | $193K | Form 4 ↗ | ||
| AKAM | Other A | May 13, 2026 | May 14, 2026 | 1d | 1,892 | — | — | derivative | Form 4 ↗ | |
| SCHW | Other A | April 1, 2026 | April 2, 2026 | 1d | 434 | — | — | derivative | Form 4 ↗ | |
| NOC | Other A | March 31, 2026 | April 2, 2026 | 2d | 68 | $682 | $46K | Form 4 ↗ | ||
| IBM | Other A | March 31, 2026 | April 1, 2026 | 1d | 377 | $242 | $91K | derivative | Form 4 ↗ | |
| SCHW | Other A | January 2, 2026 | January 6, 2026 | 4d | 394 | — | — | derivative | Form 4 ↗ | |
| NOC | Other A | December 31, 2025 | January 5, 2026 | 5d | 81 | $570 | $46K | late | Form 4 ↗ | |
| IBM | Other A | December 31, 2025 | January 2, 2026 | 2d | 309 | $296 | $92K | derivative | Form 4 ↗ | |
| SCHW | Other A | October 1, 2025 | October 3, 2025 | 2d | 407 | — | — | derivative | Form 4 ↗ | |
| IBM | Other A | September 30, 2025 | October 1, 2025 | 1d | 324 | $282 | $91K | derivative | Form 4 ↗ | |
| NOC | Other A | September 30, 2025 | October 1, 2025 | 1d | 76 | $609 | $46K | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| October 5, 2026 | Form 4 | 0001804183-26-000016 | 1 | published | EDGAR ↗ |
| October 1, 2026 | Form 4 | 0001628280-26-064142 | 1 | published | EDGAR ↗ |
| October 1, 2026 | Form 4 | 0001804183-26-000014 | 1 | published | EDGAR ↗ |
| July 6, 2026 | Form 4 | 0001804183-26-000013 | 1 | published | EDGAR ↗ |
| July 2, 2026 | Form 4 | 0001804183-26-000011 | 1 | published | EDGAR ↗ |
| July 1, 2026 | Form 4 | 0001628280-26-046450 | 1 | published | EDGAR ↗ |
| May 27, 2026 | Form 4 | 0001804183-26-000010 | 2 | published | EDGAR ↗ |
| May 21, 2026 | Form 4 | 0001628280-26-037195 | 1 | published | EDGAR ↗ |
| May 14, 2026 | Form 4 | 0001804183-26-000008 | 1 | published | EDGAR ↗ |
| April 2, 2026 | Form 4 | 0001628280-26-022976 | 1 | published | EDGAR ↗ |
| April 2, 2026 | Form 4 | 0001804183-26-000006 | 1 | published | EDGAR ↗ |
| April 1, 2026 | Form 4 | 0001804183-26-000004 | 1 | published | EDGAR ↗ |
| January 6, 2026 | Form 4 | 0001804183-26-000003 | 1 | published | EDGAR ↗ |
| January 5, 2026 | Form 4 | 0001628280-26-000385 | 1 | published | EDGAR ↗ |
| January 2, 2026 | Form 4 | 0001804183-26-000001 | 1 | published | EDGAR ↗ |
| October 3, 2025 | Form 4 | 0001804183-25-000014 | 1 | published | EDGAR ↗ |
| October 1, 2025 | Form 4 | 0001628280-25-043377 | 1 | published | EDGAR ↗ |
| October 1, 2025 | Form 4 | 0001804183-25-000012 | 1 | published | EDGAR ↗ |
Other insiders at NORTHROP GRUMMAN CORP /DE/
- Schwab Charles R. Co-Chairman 45 rows
- WELSH MARK A III Director 41 rows
- Howell Laura SVP, Chief Accounting Officer 30 rows
- Bettinger Walter W Co-Chairman 28 rows
- Joseph Paul C EVP - Global Sales 25 rows
- Sundaram Mani EVP and GM Security 25 rows
- KRISHNA ARVIND Director 24 rows
- Blumofe Robert Chief Technology Officer 23 rows
- Murtagh Nigel J Chief Risk Officer 22 rows
- Karon Adam COO & GM Edge Technology Group 21 rows
Everyone on file, with contracts and lobbying under the company's name: NORTHROP GRUMMAN CORP /DE/.
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- Options and derivatives on Form 4 Table I = shares. Table II = options and other derivatives.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 18 | 19 | October 1, 2025 | October 5, 2026 | Form 4 list on EDGAR |
Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.