As of November 6, 2026, Ducommun Inc. is a publicly traded company (NYSE: DCO); its largest reported holder is State Street, with 6.3% on Schedule 13G of August 7, 2026, then BlackRock (5.3%). The largest insider holding is Robert C. Ducommun, a director, with 420,780 shares (2.8% of shares outstanding), per Form 4 of December 6, 2024 (Schedule 13G, August 7, 2026).
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Is Ducommun Inc. a real, registered company?
- Ducommun Inc files with the SEC under CIK 30305 (its SEC filings).
- Its shares are listed under the ticker DCO on NYSE (SEC company record).
- Incorporated in Delaware; business address in Costa Mesa, California, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under DUCOMMUN INC in our court records and SEC 8-K records (as of 2026-11-06).
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names BlackRock (filed 2026-10-27).
Who are Ducommun Inc.'s owners and officers?
Ducommun Inc.: incorporated in Delaware; business address in Costa Mesa, California; industry Aircraft Parts & Auxiliary Equipment, NEC (Schedule 13G, 2026-10-27).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G, 2026-10-27 | Blackrock Portfolio Management LLC | 5.3% |
| Schedule 13G, 2026-08-07 | State Street Corporation | 6.3% |
| Schedule 13G, 2026-08-06 | Fmr LLC | 5.1% |
| Schedule 13G, 2026-05-12 | State Street Corporation | 5.2% |
| Schedule 13G/A, 2026-04-09 | Dimensional Fund Advisors LP | 3.4% |
| Schedule 13G/A, 2026-03-26 | The Vanguard Group | 0% |
| Schedule 13D/A, 2026-03-10 | Gamco Investors, Inc. Et Al | 3.2% |
| Schedule 13G/A, 2025-10-09 | Dimensional Fund Advisors LP | 5.8% |
Questions about who owns Ducommun Inc.
Who owns Ducommun Inc.?
On this page, 3 holders' latest ownership filings report 5% or more of Ducommun Inc.: State Street Corporation (6.3%, Schedule 13G, filed 2026-08-07), Blackrock Portfolio Management LLC (5.3%, Schedule 13G, filed 2026-10-27) and Fmr LLC (5.1%, Schedule 13G, filed 2026-08-06).
Who are the largest shareholders of Ducommun Inc.?
By the share each holder's latest filing reports, the largest holders of Ducommun Inc. on this page are State Street Corporation (6.3%), Blackrock Portfolio Management LLC (5.3%) and Fmr LLC (5.1%).
When did State Street Corporation buy into Ducommun Inc.?
The filings give report dates, not purchase dates. The earliest filing from State Street Corporation on this page is the Schedule 13G, filed 2026-05-12, reporting 5.2%; its latest, Schedule 13G filed 2026-08-07, reports 6.3%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 8 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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What the Full Report on Ducommun Inc. covers
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Which Company This Is
What They Do, And How The Money Works
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The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
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Which insiders own Ducommun Inc. shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , a director: 420,780 shares (2.8% of shares outstanding), 409,900 held directly and 10,880 indirectly (Form 4, 2024-12-06).
- , the chairman and chief executive: 383,864 shares (2.5% of shares outstanding) (Form 4, 2026-08-19).
- , the s.v.p. and elec.: 62,034 shares (0.41% of shares outstanding) (Form 4, 2026-05-15).
- , the v.p. and g.c.: 33,171 shares (0.22% of shares outstanding) (Form 4, 2026-05-20).
- , the chief financial officer and senior v.p.: 25,769 shares (0.17% of shares outstanding) (Form 4, 2026-05-22).
Shares outstanding: 15,124,087 as of 2026-10-29, from the company's latest SEC cover page.
How much has Ducommun Inc. raised?
No fundraising or offering filing from Ducommun Inc. is on file with us.
Keep reading
More on Ducommun Inc. and the records around it.
Ducommun Inc. elsewhere on the record
- 5%+ stake filings Oct 2026
Companies that share a holder
- GAMCO INVESTORS, INC. ET AL also filed stake reports on 45 other companies: WESTWOOD HOLDINGS GROUP INC (Nov 2026), NATHANS FAMOUS, INC. (Oct 2026), BEASLEY BROADCAST GROUP INC (Oct 2026)
- BlackRock Portfolio Management LLC also filed stake reports on 118 other companies: AMERISAFE INC (Nov 2026), BlackRock ETF Trust (Nov 2026), iShares J.P. Morgan EM Local Currency Bond ETF (Nov 2026)
- STATE STREET CORPORATION also filed stake reports on 343 other companies: TRADE DESK INC/THE (Oct 2026), CENTRUS ENERGY CORP (Sep 2026), ACADIA PHARMACEUTICALS INC (Aug 2026)
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