Peter B. Cancelmo, VP and General Counsel of Omeros Corp, filed a Form 4 on September 1, 2026, reporting two rounds of stock option exercises and corresponding share sales executed on August 28 and August 31, 2026.

Key Highlights

  • Reporting person: Peter B. Cancelmo, VP and General Counsel of Omeros Corp (NASDAQ:OMER)
  • Options exercised: 25,000 shares on 08/28/2026 and 25,000 shares on 08/31/2026, each at an exercise price of $2.94 per share
  • Shares sold: 25,000 shares on 08/28/2026 at a weighted average price of $18.6451, and 25,000 shares on 08/31/2026 at a weighted average price of $18.5416
  • Remaining common stock: 200 shares held directly following each sale
  • Remaining stock options: 50,000 options remaining after both transactions, down from 100,000 prior to the reported period
  • Option vesting: Options vest over 48 equal monthly installments with a vesting commencement date of April 1, 2023, expiring 09/22/2033

Cancelmo's Option Exercises and Share Sales at Omeros Corp

According to the filing, Cancelmo executed two separate option exercise-and-sale sequences during the reporting period. On August 28, 2026, he acquired 25,000 shares of common stock via a stock option exercise (transaction code M) at an exercise price of $2.94, bringing his directly held common stock to 25,200 shares. He then sold all 25,000 of those shares (transaction code S) at a weighted average price of $18.6451, with individual trades ranging from $18.55 to $18.77, leaving him with 200 shares directly held.

On August 31, 2026, Cancelmo repeated the sequence: he exercised another 25,000 options at $2.94 per share, again bringing his directly held total to 25,200 shares, then sold 25,000 shares at a weighted average price of $18.5416, with individual trades ranging from $18.32 to $18.90, returning his directly held common stock position to 200 shares. The filing notes that the price reported for each sale reflects a weighted average, and Cancelmo undertook to provide full trade-level detail upon request to the SEC staff, the issuer, or a security holder.

The filing discloses that the underlying stock options carry an exercise price of $2.94 and expire on September 22, 2033. Per the filing, these options vest and become exercisable over 48 equal monthly installments commencing April 1, 2023. Following the two exercises reported, Cancelmo held 50,000 stock options directly.

What Was Disclosed

The Form 4 reports two option exercise and sale transactions by Omeros Corp's VP and General Counsel on August 28 and August 31, 2026, totaling 50,000 shares exercised and 50,000 shares sold, leaving 200 shares and 50,000 options directly held.