SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP 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: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* REARDON ANTHONY J (Last) (First) (Middle) 200 SANDPOINTE AVENUE #700 (Street) SANTA ANA CA 92707 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol DUCOMMUN INC /DE/ [ DCO ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 04/20/2018
	4. If Amendment, Date of Original Filed (Month/Day/Year)	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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	04/20/2018		M		7,500	A	$15.92	47,723	D
Common Stock	04/20/2018		F		5,613	D	$31.65	42,110	D
Common Stock	04/20/2018		M		5,500	A	$25.51	47,610	D
Common Stock	04/20/2018		F		4,961	D	$31.65	42,649	D
Common Stock	04/20/2018		M		5,500	A	$24.9	48,149	D
Common Stock	04/20/2018		F		4,907	D	$31.65	43,242	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Option - Right to Buy(1)	$15.92	04/20/2018		M			7,500	03/23/2018(2)	03/23/2023	Common Stock	7,500	$0.00	15,000	D
Option - Right to Buy(1)	$25.51	04/20/2018		M			5,500	03/30/2018(3)	03/30/2022	Common Stock	5,500	$0.00	5,500	D
Option - Right to Buy(1)	$24.9	04/20/2018		M			5,500	03/18/2018(4)	03/18/2021	Common Stock	5,500	$0.00	0	D

Explanation of Responses:

1. The option represents the right to purchase common stock granted under the Ducommun Incorporated employee stock option plans, which are Rule 16b-3 plans.

2. The option vested or will vest as to 7,500 shares on each of March 23, 2017, 2018, 2019 and 2020.

3. The option vested or will vest as to 5,500 shares on each of March 30, 2016, 2017, 2018 and 2019.

4. The option vested as to 5,500 shares on each of March 18, 2015, 2016, 2017 and 2018.

Remarks:

	Anthony J. Reardon	04/24/2018
	** 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 4 (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).
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