Form 4 for DCO DUCOMMUN INC /DE/

Accepted 2026-03-06 00:00:00 ET · period of report 2026-03-04 · accession 0001655127-26-000002 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
M	2026-03-06	2026-03-04+	DCO	Redondo Jerry L	SVP, Elec, Struc. Systems	F - Tax	$137.92	-5,964	69.6K	-8%	-$822.5K
M	2026-03-06	2026-03-04	DCO	Redondo Jerry L	SVP, Elec, Struc. Systems	A - Grant	$0.00	+11.7K	72.0K	+19%	$0

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-03-05	F	D	986	$130.19	71,033	D	—	—	(F5) Represents a reduction in shares to satisfy the tax withholding obligations of the Issuer with respect to the settlement, on March 5, 2026, of 1,834 restricted stock units.
2	Common	Common Stock	2026-03-04	F	D	4,978	$139.45	69,629	D	—	—	(F4) Represents a reduction in shares to satisfy the tax withholding obligations of the Issuer with respect to the settlement, on March 4, 2026, of 9,261 performance stock units as described in footnote (1) above.
3	Common	Common Stock	2026-03-04	A	A	9,261	$0.00	74,607	D	—	—	(F1) Acquired upon the settlement of performance stock units granted on May 8, 2023 under the Ducommun Incorporated Stock Incentive Plan as a result of the satisfaction of performance metrics underlying the award. (F2) Granted as compensation for services. (F3) The total amount of securities listed includes 77 shares of common stock acquired on January 30, 2026 through the Ducommun Incorporated Employee Stock Purchase Plan.
4	Common	Common Stock	2026-03-04	A	A	2,390	$0.00	72,019	D	—	—