DCO: Cluster sell

Date:

03/04/2026

Insiders:

Mookerji Suman B., Sr. V.P., C.F.O., and 1 others

Prior trend:

23 months of no clear discretionary insider activity

A $4.37M cluster sell for Ducommun Inc (DCO) on 03/04/2026 after 23 months of no clear discretionary insider activity trend.

Reports

Action	Amount	Date	Insider	Role(s)	SEC Filing No
Sell	$1.97M	03/06/2026	Mookerji Suman B.	Sr. V.P., C.F.O.	0001975924-26-000002
Sell	$1.03M	03/10/2026	Mookerji Suman B.	S.V.P., CFO	0001975924-26-000004
Sell	$1.37M	03/12/2026	BALDRIDGE RICHARD A	Director	0001229083-26-000002

Stake Changes

Action	Insider	Role(s)	Total Change	% Change
Sell	Mookerji Suman B.	Sr. V.P., C.F.O.	$3.00M	43.4%
Sell	BALDRIDGE RICHARD A	Director	$1.37M	34.2%

Transactions

Action	Amount	Date	Insider	Security	Type	SEC Code
	–	03/04/2026	Mookerji Suman B.	Common Stock	Non-discretionary	Grant/Award
	–	03/04/2026	Mookerji Suman B.	Common Stock	Non-discretionary	Tax Withholding
	–	03/04/2026	Mookerji Suman B.	Common Stock	Non-discretionary	Grant/Award
Sell	$1.97M	03/04/2026	Mookerji Suman B.	Common Stock	Discretionary	Sale
	–	03/05/2026	Mookerji Suman B.	Option - Right to Purchase	Non-discretionary	Exercise/Conversion
	–	03/05/2026	Mookerji Suman B.	Common Stock	Non-discretionary	Tax Withholding
	–	03/05/2026	Mookerji Suman B.	Common Stock	Non-discretionary	Exercise/Conversion
	–	03/05/2026	Mookerji Suman B.	Common Stock	Non-discretionary	Tax Withholding
Sell	$1.03M	03/10/2026	Mookerji Suman B.	Common Stock	Discretionary	Sale
Sell	$1.37M	03/10/2026	BALDRIDGE RICHARD A	Common Stock	Discretionary	Sale