Director Yang Taiyin of Kodiak Sciences Inc. filed a Form 4 on October 26, 2026, reporting the exercise of a fully vested stock option covering 20,000 shares of common stock at an exercise price of $2.35 per share, with the transaction dated October 23, 2026.

Key Highlights

  • Reporting person: Yang Taiyin, director of Kodiak Sciences Inc. (NASDAQ:KOD)
  • Transaction date: October 23, 2026
  • Transaction code: M (exercise of derivative security)
  • Shares acquired: 20,000 shares of common stock at $2.35 per share
  • Option details: Stock option (right to buy) with an exercise price of $2.35, expiring June 28, 2034
  • Vesting status: "Shares subject to the option are fully vested," according to the filing
  • Beneficial ownership following transaction: 20,000 shares held directly; 20,000 derivative securities (options) remain beneficially owned

Yang Taiyin's October 2026 Option Exercise at Kodiak Sciences

According to the Form 4 filed with the U.S. Securities and Exchange Commission, Yang Taiyin, a director of Kodiak Sciences Inc. (NASDAQ:KOD), reported a single transaction on October 23, 2026, consisting of the exercise of a stock option covering 20,000 shares of the company's common stock. The exercise price was $2.35 per share. The filing notes that the price of the derivative security involved in the transaction was $0, and the transaction was coded "M," indicating an exercise or conversion of a derivative security.

The filing discloses that the option exercised had an expiration date of June 28, 2034, and that the "shares subject to the option are fully vested," as stated in the explanation of responses. Following the reported transaction, Yang Taiyin directly holds 20,000 shares of common stock. In Table II, the filing also reflects that 20,000 derivative securities (stock options with an exercise price of $2.35) remain beneficially owned directly by the reporting person following the transaction.

The Form 4 was signed by David Peinsipp as attorney-in-fact for Taiyin Yang and was filed on October 26, 2026. The filing was made pursuant to Section 16(a) of the Securities Exchange Act of 1934 and was submitted as an individual filing by one reporting person. No amendment to a prior filing was indicated.

What Was Disclosed

Yang Taiyin, a director at Kodiak Sciences Inc., disclosed the exercise of a fully vested stock option for 20,000 shares of common stock at $2.35 per share on October 23, 2026, resulting in direct beneficial ownership of 20,000 shares following the transaction.