Ducommun director files initial ownership report

Ducommun Inc. director Mark A. Caylor filed an initial Form 3 reporting his beneficial ownership in the company.

Rhea-AI Filing Summary

Ducommun Inc. director Mark A. Caylor filed an initial Form 3 reporting his beneficial ownership in the company. The filing shows he holds no shares of Common Stock directly as of May 4, 2026. This is a routine disclosure for a newly reporting insider and does not reflect any recent stock purchase or sale.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Caylor Mark A

Role Director

Type	Security	Shares	Price	Value
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 0 shares (Direct)

Key Figures

Common Stock holdings: 0.0000 shares Holding entries reported: 1 entry Net buy/sell shares: 0 shares

3 metrics

Common Stock holdings 0.0000 shares Total shares following Form 3 as of May 4, 2026

Holding entries reported 1 entry Transaction summary holdingEntries count

Net buy/sell shares 0 shares Transaction summary netBuySellShares with neutral direction

Key Terms

Common Stock, direct ownership, transaction code

3 terms

Common Stock financial

""security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

direct ownership financial

""direct_or_indirect": "D", "ownership_type": "direct""

transaction code regulatory

""transaction_code_description": "Unknown transaction code""

FAQ

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

What does Mark A. Caylor’s Form 3 filing mean for DUCOMMUN (DCO)?

The Form 3 filing shows Mark A. Caylor, a director of Ducommun, reporting his initial beneficial ownership. He reports holding no shares of Common Stock directly as of May 4, 2026, and the filing does not disclose any recent stock transactions.

How many DUCOMMUN (DCO) shares does director Mark A. Caylor report on Form 3?

Mark A. Caylor reports beneficial ownership of zero shares of Ducommun Common Stock. The transaction record lists total shares following the report as 0.0000, indicating no directly held Common Stock at the time of this initial ownership statement.

Does Mark A. Caylor buy or sell any DUCOMMUN (DCO) stock in this Form 3?

No, the Form 3 does not show any stock purchases or sales by Mark A. Caylor. It is an initial ownership statement with a holding entry and a total of 0.0000 Common Stock shares reported following the filing date of May 4, 2026.

What type of security is reported in Mark A. Caylor’s DUCOMMUN (DCO) Form 3?

The Form 3 identifies Ducommun’s Common Stock as the security class. For this security, Caylor reports total shares following the reported date as 0.0000, indicating no direct ownership of Ducommun Common Stock at that time.

Is Mark A. Caylor a major shareholder of DUCOMMUN (DCO) based on this Form 3?

Based on this Form 3, Mark A. Caylor is not a major shareholder. He is listed as a director and reports zero shares of Common Stock beneficially owned directly, with total shares following the filing recorded as 0.0000.

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

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Accepted by SEC EDGAR 05/05/2026 - 04:59 PM EDT Learn about SEC filing dates

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Caylor Mark A

(Last) (First) (Middle)

600 ANTON BLVD.

SUITE 1100

(Street)

COSTA MESA CALIFORNIA 92626

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
05/04/2026

3. Issuer Name and Ticker or Trading Symbol
DUCOMMUN INC /DE/ [ DCO ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	0	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit 24 - Power of Attorney

	/s/ Rajiv A. Tata, attorney-in-fact	05/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)