Mark A. Welsh III

CIK: 0001692554

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)137 (98.6%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (1.4%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

NOC

NORTHROP GRUMMAN CORP /DE/

Director

Discretionary Trading P&L

Holdings

Transaction History (139 total)

NOC
NORTHROP GRUMMAN CORP /DE/
Aug 3, 2026
Sale(S)
Direct
11 shares at avg. $546.42$6K
NOC
NORTHROP GRUMMAN CORP /DE/
Aug 3, 2026
Sale(S)
Direct
31 shares at avg. $547.42$17K
NOC
NORTHROP GRUMMAN CORP /DE/
Aug 3, 2026
Sale(S)
Direct
2 shares at avg. $550.68$1K
NOC
NORTHROP GRUMMAN CORP /DE/
Aug 3, 2026
Sale(S)
Direct
19 shares at avg. $545.59$10K
NOC
NORTHROP GRUMMAN CORP /DE/
Aug 3, 2026
Sale(S)
Direct
4 shares at avg. $554.14$2K
NOC
NORTHROP GRUMMAN CORP /DE/
Aug 3, 2026
Sale(S)
Direct
8 shares at avg. $544.53$4K
NOC
NORTHROP GRUMMAN CORP /DE/
Aug 3, 2026
Sale(S)
Direct
2 shares at avg. $553.90$1K
NOC
NORTHROP GRUMMAN CORP /DE/
Aug 3, 2026
Sale(S)
Direct
6 shares at avg. $549.50$3K
NOC
NORTHROP GRUMMAN CORP /DE/
Aug 3, 2026
Sale(S)
Direct
2 shares at avg. $552.95$1K
NOC
NORTHROP GRUMMAN CORP /DE/
Aug 3, 2026
Sale(S)
Direct
10 shares at avg. $548.32$5K
NOC
NORTHROP GRUMMAN CORP /DE/
May 20, 2026
Award(A)
Direct
349 shares at avg. $552.17$193K
NOC
NORTHROP GRUMMAN CORP /DE/
May 4, 2026
Sale(S)
Direct
43 shares at avg. $570.47$25K
NOC
NORTHROP GRUMMAN CORP /DE/
May 4, 2026
Sale(S)
Direct
1 shares at avg. $577.05$577.05
NOC
NORTHROP GRUMMAN CORP /DE/
May 4, 2026
Sale(S)
Direct
7 shares at avg. $576.38$4K
NOC
NORTHROP GRUMMAN CORP /DE/
May 4, 2026
Sale(S)
Direct
9 shares at avg. $569.49$5K
NOC
NORTHROP GRUMMAN CORP /DE/
May 4, 2026
Sale(S)
Direct
3 shares at avg. $571.74$2K
NOC
NORTHROP GRUMMAN CORP /DE/
May 4, 2026
Sale(S)
Direct
14 shares at avg. $573.51$8K
NOC
NORTHROP GRUMMAN CORP /DE/
May 4, 2026
Sale(S)
Direct
2 shares at avg. $574.51$1K
NOC
NORTHROP GRUMMAN CORP /DE/
May 4, 2026
Sale(S)
Direct
1 shares at avg. $566.60$566.6
NOC
NORTHROP GRUMMAN CORP /DE/
May 4, 2026
Sale(S)
Direct
5 shares at avg. $568.75$3K
NOC
NORTHROP GRUMMAN CORP /DE/
May 4, 2026
Sale(S)
Direct
4 shares at avg. $575.59$2K
NOC
NORTHROP GRUMMAN CORP /DE/
May 4, 2026
Sale(S)
Direct
6 shares at avg. $572.72$3K
NOC
NORTHROP GRUMMAN CORP /DE/
Feb 2, 2026
Sale(S)
Direct
11 shares at avg. $686.43$8K
NOC
NORTHROP GRUMMAN CORP /DE/
Feb 2, 2026
Sale(S)
Direct
8 shares at avg. $687.64$6K
NOC
NORTHROP GRUMMAN CORP /DE/
Feb 2, 2026
Sale(S)
Direct
10 shares at avg. $688.51$7K

		Type	Shares	Price		Ownership
Aug 3, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	11	$546.42	$6,011	Direct
Aug 3, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	31	$547.42	$16,970	Direct
Aug 3, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	2	$550.68	$1,101	Direct
Aug 3, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	19	$545.59	$10,366	Direct
Aug 3, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	4	$554.14	$2,217	Direct
Aug 3, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	8	$544.53	$4,356	Direct
Aug 3, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	2	$553.90	$1,108	Direct
Aug 3, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	6	$549.50	$3,297	Direct
Aug 3, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	2	$552.95	$1,106	Direct
Aug 3, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	10	$548.32	$5,483	Direct
May 20, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Award(A)	349	$552.17	$192,707	Direct
May 4, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	43	$570.47	$24,530	Direct
May 4, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	1	$577.05	$577	Direct
May 4, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	7	$576.38	$4,035	Direct
May 4, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	9	$569.49	$5,125	Direct
May 4, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	3	$571.74	$1,715	Direct
May 4, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	14	$573.51	$8,029	Direct
May 4, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	2	$574.51	$1,149	Direct
May 4, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	1	$566.60	$567	Direct
May 4, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	5	$568.75	$2,844	Direct
May 4, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	4	$575.59	$2,302	Direct
May 4, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	6	$572.72	$3,436	Direct
Feb 2, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	11	$686.43	$7,551	Direct
Feb 2, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	8	$687.64	$5,501	Direct
Feb 2, 2026	NOC NORTHROP GRUMMAN CORP /DE/	Sale(S)	10	$688.51	$6,885	Direct

1-25 of 139 transactions

…

About WELSH MARK A III

WELSH MARK A III (SEC CIK 0001692554) files insider reports with the SEC as Director of NORTHROP GRUMMAN CORP /DE/ (NOC).

Signal8 holds 18 ownership filings by WELSH MARK A III, all Form 4s, filed between Sep 3, 2024 and Aug 4, 2026. Those filings report 139 transactions, from Aug 29, 2024 to Aug 3, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on WELSH MARK A III's filings is in FALLS CHURCH, VA.

Recent filings by WELSH MARK A III

Aug 3, 2026: Open-market sales of NOC shares (10 lines, Form 4, code S).
May 20, 2026: Grant or award of NOC shares (Form 4, code A).
May 4, 2026: Open-market sales of NOC shares (11 lines, Form 4, code S).
Feb 2, 2026: Open-market sales of NOC shares (3 lines, Form 4, code S).

Other insiders filing for NORTHROP GRUMMAN CORP /DE/ (NOC)

Grady Christopher W., Director
KRISHNA ARVIND, Director
Brown Marianne Catherine, Director
Warden Kathy J, Chair, CEO and President
WINSTON MARY A, Director
Turley James S, Director

How to read Form 4 transaction codes