Sec Form 4 Filing - Wampler Christopher D. @ DUCOMMUN INC /DE/ - 2019-05-29

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Wampler Christopher D. 2. Issuer Name and Ticker or Trading Symbol DUCOMMUN INC /DE/ [ DCO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) VP, Controller and CAO (Last) (First) (Middle) 200 SANDPOINTE AVENUE, SUITE 700 3. Date of Earliest Transaction (MM/DD/YY) 05/29/2019 (Street) SANTA ANA, CA92707-5759 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 05/29/2019 M 750 A $ 22.84 9,519 D Common Stock 05/29/2019 F 494 D $ 47.92 9,025 D Common Stock 05/29/2019 M 1,500 A $ 15.92 10,525 D Common Stock 05/29/2019 F 846 D $ 47.92 9,679 D Common Stock 05/30/2019 S 3,000 D $ 45.98 6,679 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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 an d 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: 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 ) $ 22.84 05/29/2019 M 750 07/31/2015( 2 ) 07/30/2020 Common Stock 750 $ 0 0 D Option - Right to Buy ( 1 ) $ 15.92 05/29/2019 M 1,500 03/23/2017( 3 ) 03/22/2023 Common Stock 1,500 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Wampler Christopher D. 200 SANDPOINTE AVENUE SUITE 700 SANTA ANA, CA92707-5759 VP, Controller and CAO Signatures Christopher D. Wampler 05/31/2019 Signature of Reporting Person Date

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 )This option vested as to 750 shares on each of July 2014, 2015, 2016, and 2017. ( 3 )This option vests as to 1,250 shares on each of March 2017, 2018, 2019, and 2020.

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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