Ducommun officer proposes $291K share sale

The notice also lists five earlier sales by Stephen G. Oswald and the Stephen G. and Regina Oswald Foundation during August 2026.

Available on EDGAR 11/09/2026 - 03:57 PM EST Accepted by SEC EDGAR 11/09/2026 - 03:57 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Ducommun Inc. officer and director Stephen G. Oswald reported a proposed sale of 2,000 common shares, with an aggregate market value of $291,250.00 and an approximate sale date of November 9, 2026. Charles Schwab Corp is listed as the broker. The shares were acquired in an open-market purchase on March 25, 2020, for cash.

Key Figures

Proposed common shares to be sold: 2,000 shares Aggregate market value: $291,250.00 Prior common shares sold by Stephen G. Oswald: 5,766 shares +1 more

4 metrics

Proposed common shares to be sold 2,000 shares Approximate sale date November 9, 2026

Aggregate market value $291,250.00 Proposed sale of 2,000 common shares

Prior common shares sold by Stephen G. Oswald 5,766 shares August 12, 2026

Prior common shares sold by the Stephen G. and Regina Oswald Foundation 235 shares August 12, 2026

Key Terms

Aggregate Market Value, Open Market Purchase, Gross Proceeds

3 terms

Aggregate Market Value financial

"Aggregate Market Value | Number of Shares"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

Open Market Purchase financial

"Nature of Acquisition Transaction | Open Market Purchase"

An open market purchase is when a company buys its own shares on public stock exchanges the same way any investor would, rather than through a private deal. Investors care because these purchases reduce the number of shares available, can boost earnings per share and share price, signal that management thinks the stock is undervalued, and use company cash that might otherwise go to reinvestment or dividends — like a business quietly buying back its own tickets at the box office.

Gross Proceeds financial

"Amount of Securities Sold | Gross Proceeds"

The total amount of cash a company receives from a financing event or sale before any fees, expenses, taxes or deductions are taken out. Investors watch gross proceeds because it shows the raw scale of new capital being raised—think of it as the paycheck amount before withholdings—which helps assess how much funding is available for operations, growth, debt payoff or how much shareholder dilution might occur once costs are removed.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many DCO shares did Stephen G. Oswald propose to sell?

Stephen G. Oswald reported a proposed sale of 2,000 common shares, with an aggregate market value of $291,250.00. The approximate sale date is November 9, 2026, and Charles Schwab Corp is listed as the broker.

What prior share sales are listed in the DCO notice?

The past-three-months table lists Stephen G. Oswald's sale of 5,766 common shares on August 12, 2026, and four sales by the Stephen G. and Regina Oswald Foundation: 235 shares on August 12, 599 on August 13, 800 on August 14, and 610 on August 17.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001695904
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	DUCOMMUN INC /DE/
SEC File Number	001-08174
Address of Issuer	600 ANTON BOULEVARD SUITE 1100 COSTA MESA CALIFORNIA 92626
Phone	657-335-3665
Name of Person for Whose Account the Securities are To Be Sold	Oswald Stephen G
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Charles Schwab Corp 3000 Schwab Way Westlake TX 76262	2000	291250.00	15124087	11/09/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	03/25/2020	Open Market Purchase	Open Market			2000	03/25/2020	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Stephen G. Oswald 600 Anton Boulevard Suite 1100 Costa Mesa CA 92626	Common	08/12/2026	5766	1159803.79
Stephen G. and Regina Oswald Foundation 600 Anton Boulevard Suite 1100 Costa Mesa CA 92626	Common	08/12/2026	235	47495.85
Stephen G. and Regina Oswald Foundation 600 Anton Boulevard Suite 1100 Costa Mesa CA 92626	Common	08/13/2026	599	120425.10
Stephen G. and Regina Oswald Foundation 600 Anton Boulevard, Suite 1100 Costa Mesa CA 92626	Common	08/14/2026	800	164690.00
Stephen G. and Regina Oswald Foundation 600 Anton Boulevard, Suite 1100 Costa Mesa CA 92626	Common	08/17/2026	610	125648.90

144: Remarks and Signature

Remarks	Account Title: Stephen G and Regina Oswald Foundation Stephen G. Oswald as trustee Regina Oswald as trustee
Date of Notice	11/09/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Stephen G. Oswald
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)