DUCOMMUN INC /DE/

Structural Systems

Structural Systems segment net revenue for the quarter ended October 3, 2026 was $97.4 million, compared to $89.2 million for the third quarter of 2025. The year-over-year increase was primarily due to the following:

•$8.6 million higher revenue within the Company’s commercial aerospace end-use markets due to higher rates on selected large aircraft, aero engines, business jets, and rotary-wing aircraft platforms; partially offset by

•$0.4 million lower revenue within the Company’s military and space end-use markets due to lower rates on selected military rotary-wing aircraft and ground vehicle platforms, partially offset by higher rates on selected missiles platforms.

Structural Systems segment operating income for the quarter ended October 3, 2026 was $11.9 million, or 12.3% of revenue, compared to $12.2 million, or 13.7% of revenue, for the comparable quarter in 2025. The year-over-year decrease of $0.3 million was primarily due to unfavorable product mix, partially offset by higher manufacturing volume and stronger direct margins benefitting from facility consolidation synergy realization and strategic pricing. Non-GAAP adjusted operating income for the third quarter of 2026 was $13.8 million, or 14.2% of revenue, compared to $14.6 million, or 16.4% of revenue, in the comparable period last year.