---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-172404"
form_type: "8-K"
ticker: "DCO"
cik: "0000030305"
company_name: "DUCOMMUN INC /DE/"
filed_at: "2024-06-28T23:59:59+00:00"
generated_at: "2026-06-01T00:52:22.874084+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# Ducommun amends bylaws to change principal office to Costa Mesa headquarters

## Summary
- Board amended Article I, Section 2 of Amended and Restated Bylaws on June 28, 2024.
- Principal office for transaction of business changed to 600 Anton Blvd., Suite 1100, Costa Mesa, CA 92626.
- Prior address was 200 Sandpointe Avenue, Suite 700, Santa Ana, CA 92707-5759.
- Amendment filed as Exhibit 3.1; no financial or operational impact expected.

## SEC filing metadata
- accession: 0001193125-24-172404
- form_type: 8-K
- ticker: DCO
- cik: 0000030305
- company_name: DUCOMMUN INC /DE/
- filed_at: 2024-06-28T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/30305/000119312524172404/0001193125-24-172404-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/30305/000119312524172404/d854130d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-172404
- JSON: https://secwatch.observer/filing/0001193125-24-172404.json
- Plain text: https://secwatch.observer/filing/0001193125-24-172404.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.