Stephen G. Oswald, Chairman, President and CEO of Ducommun Inc /DE/ (NYSE:DCO), filed a Form 4 on August 19, 2026, disclosing a stock option exercise and two share transactions dated August 17-18, 2026.

Key Highlights

  • Option exercise: Oswald exercised 10,000 stock options on August 17, 2026, at an exercise price of $32.90 per share, acquiring 10,000 shares of common stock.
  • Tax withholding disposition: 6,111 shares were disposed of on August 17, 2026, at $206.98 per share via transaction code F (shares withheld for taxes).
  • Open-market sale: 2,500 shares were sold on August 18, 2026, at a weighted average price of $203.95, with individual trades ranging from $202.49 to $204.80.
  • Remaining direct ownership: Following all reported transactions, Oswald directly beneficially owned 383,864 shares of common stock.
  • Remaining options: After the exercise, 7,500 options remain outstanding under Ducommun Incorporated's Stock Incentive Plan, which the filing describes as a Rule 16b-3 plan.
  • Option vesting: The exercised option vested in one-third increments on each of May 14, 2019, 2020, and 2021, with an expiration date of May 14, 2028.

Oswald's Transactions: Option Exercise, Tax Withholding, and Share Sale at Ducommun

According to the filing, Oswald exercised stock options representing the right to purchase 10,000 shares of Ducommun common stock at $32.90 per share on August 17, 2026. The option was granted under Ducommun Incorporated's Stock Incentive Plan. The filing notes the option had a date exercisable beginning May 14, 2021, and that it "vested in one-third increments on each of May 14, 2019, 2020 and 2021." Following the exercise, the filing records Oswald's beneficial ownership at 392,475 shares before subsequent dispositions.

On the same date, August 17, 2026, the filing reports that 6,111 shares were disposed of at $206.98 per share under transaction code F, which corresponds to shares withheld to cover tax obligations, reducing direct ownership to 386,364 shares. The following day, August 18, 2026, the filing discloses an additional open-market sale of 2,500 shares. The filing states this transaction "was executed in multiple trades at prices ranging from $202.49 to $204.80," with the reported figure of $203.95 reflecting the weighted average sale price. Oswald's direct beneficial ownership following all three transactions stood at 383,864 shares, according to the filing.

The filing also reports that 7,500 options remain directly held by Oswald after the August 17 exercise, with the same $32.90 exercise price and a May 14, 2028 expiration date. All reported ownership is held directly. The Form 4 was signed by Stephen G. Oswald and filed on August 19, 2026.

What Was Disclosed

Ducommun's Chairman, President and CEO disclosed a stock option exercise of 10,000 shares, a 6,111-share tax-related disposition, and an open-market sale of 2,500 shares between August 17 and 18, 2026, leaving him with 383,864 directly held shares.