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Oswald Stephen G

Disclosed activity across 1 company

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21953
SEC CIK
0001695904

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
DUCOMMUN INC /DE/DCO · Entity 4321Director · Chairman, President & CEOAugust 17, 2026August 19, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

DUCOMMUN INC /DE/

Report date August 17, 2026 · Filed August 19, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect383,864 Ending reported balance After 2026-08-18 transaction · row 3
3 source rows · reconciled sequence

Row 1 · 2026-08-17 · Exercise / conversion · Acquired 10,000 · Balance 392,475

Row 2 · 2026-08-17 · Tax withholding · Disposed 6,111 · Balance 386,364

Row 3 · 2026-08-18 · Sale · Disposed 2,500 · Balance 383,864

F1: This transaction was executed in multiple trades at prices ranging from $202.49 to $204.80. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder, full information regarding the number of shares and prices at which the transaction was effectuated.

Option - Right to BuySEC Table II · derivative / convertible security · Conversion / exercise price $32.90 · Expires 2028-05-14Direct7,500 Reported balance After 2026-08-17 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2026-08-17 · Exercise / conversion · Disposed 10,000 · Balance 7,500

F2: This option represents the right to purchase common stock under Ducommun Incorporated's Stock Incentive Plan, which is a Rule 16b-3 plan.

F3: This option vested in one-third increments on each of May 14, 2019, 2020 and 2021.

Filing footnotes · ownership attribution and instrument terms

F1: This transaction was executed in multiple trades at prices ranging from $202.49 to $204.80. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder, full information regarding the number of shares and prices at which the transaction was effectuated.

F2: This option represents the right to purchase common stock under Ducommun Incorporated's Stock Incentive Plan, which is a Rule 16b-3 plan.

F3: This option vested in one-third increments on each of May 14, 2019, 2020 and 2021.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
August 18, 2026 Filed Aug 19, 2026 20:49 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 SaleCommon Stock 2,500 $203.95 $509,875.00
Disclosure

SEC source: 0001193125-26-357054 · ownership.xml · nonDerivative · entry 3

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 383,864

F1 · price: This transaction was executed in multiple trades at prices ranging from $202.49 to $204.80. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder, full information regarding the number of shares and prices at which the transaction was effectuated.

Read SEC document
August 17, 2026 Filed Aug 19, 2026 20:49 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Exercise / conversionOption - Right to Buy · Derivative 10,000 $0.00 Strike: $32.90 $0.00
Disclosure

SEC source: 0001193125-26-357054 · ownership.xml · derivative · entry 4

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,500

Underlying: Common Stock · 10,000 shares

Expires 2028-05-14

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · security: This option represents the right to purchase common stock under Ducommun Incorporated's Stock Incentive Plan, which is a Rule 16b-3 plan.

F3 · derivative.exercise_date: This option vested in one-third increments on each of May 14, 2019, 2020 and 2021.

Read SEC document
August 17, 2026 Filed Aug 19, 2026 20:49 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 6,111 $206.98 $1,264,854.78
Disclosure

SEC source: 0001193125-26-357054 · ownership.xml · nonDerivative · entry 2

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 386,364

Read SEC document
August 17, 2026 Filed Aug 19, 2026 20:49 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Exercise / conversionCommon Stock 10,000 $32.90 $329,000.00
Disclosure

SEC source: 0001193125-26-357054 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 392,475

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
August 12, 2026 Filed Aug 13, 2026 22:30 UTC Amendment DUCOMMUN INC /DE/ DCO · Entity 4321 GiftCommon Stock 3,400 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-349759 · ownership.xml · nonDerivative · entry 4

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 382,475

F2 · shares: The number of shares gifted on August 12, 2026 was inadvertently identified as 2,244 shares, which has been corrected above.

Read SEC document
August 12, 2026 Filed Aug 13, 2026 22:30 UTC Amendment DUCOMMUN INC /DE/ DCO · Entity 4321 SaleCommon Stock 5,766 $201.15 $1,159,830.90
Disclosure

SEC source: 0001193125-26-349759 · ownership.xml · nonDerivative · entry 3

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 385,875

F1 · price: This transaction was executed in multiple trades at prices ranging from $200.15 to $202.08. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder, full information regarding the number of shares and prices at which the transaction was effectuated.

Read SEC document
August 12, 2026 Filed Aug 13, 2026 20:55 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GiftCommon Stock 2,244 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-349516 · ownership.xml · nonDerivative · entry 4

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 383,631

Read SEC document
August 12, 2026 Filed Aug 13, 2026 20:55 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 SaleCommon Stock 5,766 $201.15 $1,159,830.90
Disclosure

SEC source: 0001193125-26-349516 · ownership.xml · nonDerivative · entry 3

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 385,875

F1 · price: This transaction was executed in multiple trades at prices ranging from $200.15 to $202.08. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder, full information regarding the number of shares and prices at which the transaction was effectuated.

Read SEC document
August 11, 2026 Filed Aug 13, 2026 22:30 UTC Amendment DUCOMMUN INC /DE/ DCO · Entity 4321 Exercise / conversionOption - Right to Buy · Derivative 15,000 $0.00 Strike: $32.90 $0.00
Disclosure

SEC source: 0001193125-26-349759 · ownership.xml · derivative · entry 5

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,500

Underlying: Common Stock · 15,000 shares

Expires 2028-05-14

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · security: This option represents the right to purchase common stock under Ducommun Incorporated's Stock Incentive Plan, which is a Rule 16b-3 plan.

F4 · derivative.exercise_date: This option vested in one-third increments on each of May 14, 2019, 2020 and 2021.

Read SEC document
August 11, 2026 Filed Aug 13, 2026 22:30 UTC Amendment DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 9,234 $194.85 $1,799,244.90
Disclosure

SEC source: 0001193125-26-349759 · ownership.xml · nonDerivative · entry 2

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 391,641

Read SEC document
August 11, 2026 Filed Aug 13, 2026 22:30 UTC Amendment DUCOMMUN INC /DE/ DCO · Entity 4321 Exercise / conversionCommon Stock 15,000 $32.90 $493,500.00
Disclosure

SEC source: 0001193125-26-349759 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 400,875

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
August 11, 2026 Filed Aug 13, 2026 20:55 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Exercise / conversionOption - Right to Buy · Derivative 15,000 $0.00 Strike: $32.90 $0.00
Disclosure

SEC source: 0001193125-26-349516 · ownership.xml · derivative · entry 5

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,500

Underlying: Common Stock · 15,000 shares

Expires 2028-05-14

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · security: This option represents the right to purchase common stock under Ducommun Incorporated's Stock Incentive Plan, which is a Rule 16b-3 plan.

F3 · derivative.exercise_date: This option vested in one-third increments on each of May 14, 2019, 2020 and 2021.

Read SEC document
August 11, 2026 Filed Aug 13, 2026 20:55 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 9,234 $194.85 $1,799,244.90
Disclosure

SEC source: 0001193125-26-349516 · ownership.xml · nonDerivative · entry 2

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 391,641

Read SEC document
August 11, 2026 Filed Aug 13, 2026 20:55 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Exercise / conversionCommon Stock 15,000 $32.90 $493,500.00
Disclosure

SEC source: 0001193125-26-349516 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 400,875

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 11, 2026 Filed Jun 11, 2026 22:25 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GiftCommon Stock 1,920 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-268037 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 385,875

Read SEC document
May 28, 2026 Filed May 29, 2026 21:04 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GiftCommon Stock 2,034 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-248674 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 387,795

Read SEC document
May 20, 2026 Filed May 22, 2026 20:57 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Disposition to issuerCommon Stock 16,314 $143.20 $2,336,164.80
Disclosure

SEC source: 0001193125-26-237125 · ownership.xml · nonDerivative · entry 2

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 389,829

F1 · shares: In connection with the operation of the Issuer's Second Amended and Restated Clawback Policy (the "Clawback Policy") with respect to the restatement and revision of the Issuer's previously issued financial statements, as reported in the Issuer's Current Report on Form 8-K filed on May 1, 2026, the Issuer determined that the Reporting Person would not have earned certain compensation had such compensation been determined based on the restated financial statements. As a result, 16,314 shares of Issuer common stock were returned to the Issuer in accordance with the Issuer's Clawback Policy.

F1 · price: In connection with the operation of the Issuer's Second Amended and Restated Clawback Policy (the "Clawback Policy") with respect to the restatement and revision of the Issuer's previously issued financial statements, as reported in the Issuer's Current Report on Form 8-K filed on May 1, 2026, the Issuer determined that the Reporting Person would not have earned certain compensation had such compensation been determined based on the restated financial statements. As a result, 16,314 shares of Issuer common stock were returned to the Issuer in accordance with the Issuer's Clawback Policy.

Read SEC document
May 20, 2026 Filed May 22, 2026 20:57 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GiftCommon Stock 3,700 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-237125 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 406,143

Read SEC document
May 14, 2026 Filed May 15, 2026 20:53 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Disposition to issuerCommon Stock 2,221 Not disclosed Not disclosed
Disclosure

SEC source: 0001193125-26-227104 · ownership.xml · nonDerivative · entry 2

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 409,843

F2 · shares: In connection with the operation of the Issuer's Second Amended and Restated Clawback Policy (the "Clawback Policy") with respect to the restatement and revision of the Issuer's previously issued financial statements, as reported in the Issuer's Form 8-K filed on May 1, 2026, the Issuer determined that the Reporting Person would not have earned certain compensation had such compensation been determined based on the restated financial statements. As a result, 4,406 restricted stock units that vested on May 14, 2026 were not delivered to the Reporting Person and 2,221 shares of the Issuer's common stock were returned to the Issuer in accordance with the Issuer's Clawback Policy.

F2 · price: In connection with the operation of the Issuer's Second Amended and Restated Clawback Policy (the "Clawback Policy") with respect to the restatement and revision of the Issuer's previously issued financial statements, as reported in the Issuer's Form 8-K filed on May 1, 2026, the Issuer determined that the Reporting Person would not have earned certain compensation had such compensation been determined based on the restated financial statements. As a result, 4,406 restricted stock units that vested on May 14, 2026 were not delivered to the Reporting Person and 2,221 shares of the Issuer's common stock were returned to the Issuer in accordance with the Issuer's Clawback Policy.

Read SEC document
May 14, 2026 Filed May 15, 2026 20:53 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 2,185 $151.59 $331,224.15
Disclosure

SEC source: 0001193125-26-227104 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 412,064

F1 · shares: Represents a reduction in shares to satisfy the tax withholding obligations of the Issuer with respect to the settlement, on May 14, 2026, of 4,406 restricted stock units.

Read SEC document
May 08, 2026 Filed May 12, 2026 20:55 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Disposition to issuerCommon Stock 2,589 Not disclosed Not disclosed
Disclosure

SEC source: 0001193125-26-219734 · ownership.xml · nonDerivative · entry 2

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 414,249

F2 · shares: In connection with the operation of the Issuer's Second Amended and Restated Clawback Policy (the "Clawback Policy") with respect to the restatement and revision of the Issuer's previously issued financial statements, as reported in the Issuer's Form 8-K filed on May 1, 2026, the Issuer determined that the Reporting Person would not have earned certain compensation had such compensation been determined based on the restated financial statements. As a result, 5,135 stock units that vested on May 8, 2026 were not delivered to the Reporting Person and 2,589 shares of the Issuer's common stock were returned to the Issuer in accordance with the Issuer's Clawback Policy.

F2 · price: In connection with the operation of the Issuer's Second Amended and Restated Clawback Policy (the "Clawback Policy") with respect to the restatement and revision of the Issuer's previously issued financial statements, as reported in the Issuer's Form 8-K filed on May 1, 2026, the Issuer determined that the Reporting Person would not have earned certain compensation had such compensation been determined based on the restated financial statements. As a result, 5,135 stock units that vested on May 8, 2026 were not delivered to the Reporting Person and 2,589 shares of the Issuer's common stock were returned to the Issuer in accordance with the Issuer's Clawback Policy.

Read SEC document
May 08, 2026 Filed May 12, 2026 20:55 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 2,546 $137.23 $349,387.58
Disclosure

SEC source: 0001193125-26-219734 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 416,838

F1 · shares: Represents a reduction in shares to satisfy the tax withholding obligations of the Issuer with respect to the settlement, on May 8, 2026, of 5,135 restricted stock units.

Read SEC document
March 05, 2026 Filed Mar 6, 2026 21:51 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 2,409 $130.19 $313,627.71
Disclosure

SEC source: 0001695904-26-000002 · ownership.xml · nonDerivative · entry 5

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 419,384

F7 · shares: Represents a reduction in shares to satisfy the tax withholding obligations of the Issuer with respect to the vesting, on March 5, 2026, of 4,480 restricted stock units.

Read SEC document
March 04, 2026 Filed Mar 6, 2026 21:51 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 12,712 $139.45 $1,772,688.40
Disclosure

SEC source: 0001695904-26-000002 · ownership.xml · nonDerivative · entry 4

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 421,793

F6 · shares: Represents a reduction in shares to satisfy the tax withholding obligations of the Issuer with respect to the settlement, on March 4, 2026 of 23,640 performance restricted stock units (n/k/a revenue performance stock units) as described in footnote (5) above.

Read SEC document
March 04, 2026 Filed Mar 6, 2026 21:51 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GrantCommon Stock 23,649 $0.00 $0.00
Disclosure

SEC source: 0001695904-26-000002 · ownership.xml · nonDerivative · entry 3

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 434,505

F5 · shares: Represents the vesting of 23,649 performance restricted stock units (n/k/a revenue performance stock units) granted on May 8, 2023 as a result of the satisfaction of performance criteria underlying the award.

F2 · price: Granted as compensation for services.

Read SEC document
March 04, 2026 Filed Mar 6, 2026 21:51 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 40,583 $139.45 $5,659,299.35
Disclosure

SEC source: 0001695904-26-000002 · ownership.xml · nonDerivative · entry 2

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 410,856

F4 · shares: Represents a reduction in shares to satisfy the tax withholding obligations of the Issuer with respect to the settlement, on March 4, 2026, of 75,503 performance stock units described in footnote (1) above.

Read SEC document
March 04, 2026 Filed Mar 6, 2026 21:51 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GrantCommon Stock 75,503 $0.00 $0.00
Disclosure

SEC source: 0001695904-26-000002 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 451,439

F1 · shares: Acquired upon the settlement of performance stock units granted on May 8, 2023 under the Ducommun Incorporated Stock Incentive Plan as a result of the satisfaction of performance metrics underlying the award.

F2 · price: Granted as compensation for services.

F3 · balance_after: The total amount of securities listed includes 279 shares of common stock acquired on January 30, 2026 through the Ducommun Incorporated Employee Stock Purchase Plan.

Read SEC document
December 11, 2025 Filed Dec 12, 2025 21:54 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GiftCommon Stock 1,234 $0.00 $0.00
Disclosure

SEC source: 0001193125-25-317718 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 375,657

Read SEC document
November 14, 2025 Filed Nov 17, 2025 21:40 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GiftCommon Stock 3,366 $0.00 $0.00
Disclosure

SEC source: 0001193125-25-284715 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 376,891

Read SEC document
June 13, 2025 Filed Jun 16, 2025 20:43 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GiftCommon Stock 1,000 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-086798 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 380,257

Read SEC document
June 10, 2025 Filed Jun 12, 2025 21:17 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GiftCommon Stock 1,500 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-085577 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 381,257

Read SEC document
May 29, 2025 Filed May 30, 2025 21:11 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GiftCommon Stock 2,000 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-079857 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 382,757

Read SEC document
May 27, 2025 Filed May 29, 2025 20:50 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GiftCommon Stock 2,000 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-079075 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 384,757

Read SEC document
May 14, 2025 Filed May 16, 2025 20:58 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 2,368 $66.25 $156,880.00
Disclosure

SEC source: 0000950170-25-073666 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 386,757

F1 · shares: Represents a reduction in shares to satisfy the tax withholding obligations of the Issuer with respect to the vesting, on May 14, 2025, of 4,405 restricted stock units.

Read SEC document
May 08, 2025 Filed May 9, 2025 21:30 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 2,759 $66.72 $184,080.48
Disclosure

SEC source: 0000950170-25-068282 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 389,125

F1 · shares: Represents a reduction in shares to satisfy the tax withholding obligations of the Issuer with respect to the vesting, on May 8, 2025, of 5,133 restricted stock units.

Read SEC document
March 05, 2025 Filed Mar 7, 2025 21:51 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GrantCommon Stock 13,443 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-035618 · ownership.xml · nonDerivative · entry 5

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 391,884

Read SEC document
March 05, 2025 Filed Mar 7, 2025 21:51 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 8,429 $57.65 $485,931.85
Disclosure

SEC source: 0000950170-25-035618 · ownership.xml · nonDerivative · entry 4

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 378,441

F6 · shares: Represents a reduction in shares to satisfy the withholding obligations of the Issuer with respect to the settlement, on March 5, 2025, of 15,681 performance restricted stock units (n/k/a restricted performance stock units) as described in footnote (5) above.

Read SEC document
March 05, 2025 Filed Mar 7, 2025 21:51 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GrantCommon Stock 15,681 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-035618 · ownership.xml · nonDerivative · entry 3

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 386,870

F5 · shares: Represents the vesting of 15,681 performance restricted stock units (n/k/a restricted performance stock units) granted on June 22, 2022 as a result of the satisfaction of performance criteria underlying the award.

F2 · price: Granted as compensation for services.

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March 05, 2025 Filed Mar 7, 2025 21:51 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 34,444 $57.65 $1,985,696.60
Disclosure

SEC source: 0000950170-25-035618 · ownership.xml · nonDerivative · entry 2

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 371,189

F4 · shares: Represents a reduction in shares to satisfy the tax withholding obligations of the Issuer with respect to the settlement, on March 5, 2025, of 64,081 performance stock units described in footnote (1) above.

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March 05, 2025 Filed Mar 7, 2025 21:51 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GrantCommon Stock 64,081 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-035618 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 405,633

F1 · shares: Acquired upon the settlement of performance stock units granted on June 22, 2022 under the Ducommun Incorporated Stock Incentive Plan as a result of the satisfaction of performance criteria underlying the award.

F2 · price: Granted as compensation for services.

F3 · balance_after: The total amount of securities listed includes 401 shares of common stock acquired on January 31, 2025 through the Ducommun Incorporated Employee Stock Purchase Plan.

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September 20, 2024 Filed Sep 23, 2024 20:52 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 SaleCommon Stock 1,200 $66.32 $79,584.00
Disclosure

SEC source: 0000950170-24-108792 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 341,151

F1 · price: This transaction was executed in multiple trades at prices ranging from $65.95 to $66.77. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder, full information regarding the number of shares and prices at which the transaction was effectuated.

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August 14, 2024 Filed Aug 15, 2024 21:28 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GiftCommon Stock 5,188 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-097691 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 342,351

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June 21, 2024 Filed Jun 25, 2024 21:03 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 SaleCommon Stock 2,000 $58.23 $116,460.00
Disclosure

SEC source: 0000950170-24-077404 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 347,539

F1 · price: This transaction was executed in multiple trades at prices ranging from $57.94 to $58.45. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder, full information regarding the number of shares and prices at which the transaction was effectuated.

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June 17, 2024 Filed Jun 18, 2024 21:18 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GiftCommon Stock 7,378 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-075026 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 349,539

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May 14, 2024 Filed May 15, 2024 21:49 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GrantCommon Stock 13,218 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-060633 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 356,917

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May 08, 2024 Filed May 9, 2024 20:38 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 2,759 $56.54 $155,993.86
Disclosure

SEC source: 0000950170-24-057151 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 343,699

F1 · shares: Represents a reduction in shares to satisfy the tax withholding obligations of the Issuer with respecct to the vesting, on May 8, 2024, of 5,132 restricted stock units.

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February 26, 2024 Filed Feb 28, 2024 22:28 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 6,076 $48.73 $296,083.48
Disclosure

SEC source: 0000950170-24-022292 · ownership.xml · nonDerivative · entry 4

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 346,458

F6 · shares: Represents a reduction in shares to satisfy the tax withholding obligations of the Issuer with respect to the settlement, on February 26, 2024, of 11,304 performance restricted stock units as described in footnote (5) above.

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February 26, 2024 Filed Feb 28, 2024 22:28 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GrantCommon Stock 11,304 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-022292 · ownership.xml · nonDerivative · entry 3

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 352,534

F5 · shares: Represents the vesting of 11,304 performance restricted stock units granted on March 8, 2021.

F2 · price: Granted as compensation for services.

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February 26, 2024 Filed Feb 28, 2024 22:28 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 Tax withholdingCommon Stock 35,565 $48.73 $1,733,082.45
Disclosure

SEC source: 0000950170-24-022292 · ownership.xml · nonDerivative · entry 2

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 341,230

F4 · shares: Represents a reduction in shares to satisfy the tax withholding obligations of the Issuer with respect to the settlement, on February 26, 2024, of 66,167 performance stock units, as described in footnote (1) above.

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February 26, 2024 Filed Feb 28, 2024 22:28 UTC DUCOMMUN INC /DE/ DCO · Entity 4321 GrantCommon Stock 66,167 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-022292 · ownership.xml · nonDerivative · entry 1

Oswald Stephen G · CIK 0001695904 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 376,795

F1 · shares: Acquired upon settlement of performance stock units granted on February 17, 2021 under the Ducommun Incorporated Stock Incentive Plan as a result of the satisfaction of performance criteria underlying the award.

F2 · price: Granted as compensation for services.

F3 · balance_after: The total amount of securities listed includes 513 shares of common stock acquired on January 31, 2024 through the Ducommun Incorporated Employee Stock Purchase Plan.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.