Thurman Alex R. 4
4 · GLAUKOS Corp · Filed Apr 3, 2026
Research Summary
AI-generated summary of this filing
Glaukos (GKOS) CFO Alex Thurman Withholds 1,589 Shares for Taxes
What Happened Alex R. Thurman, Chief Financial Officer of Glaukos Corp (GKOS), had 1,589 shares withheld by the company to satisfy tax withholding obligations tied to vested restricted stock units (RSUs). The withholding was recorded at $109.60 per share, a total value of $174,154. This was a tax-withholding disposition (code F), not an open-market sale.
Key Details
- Transaction date: 2026-04-02; filing date: 2026-04-03 (timely).
- Withheld shares: 1,589 at $109.60 each; total value ≈ $174,154.
- Transaction code: F (shares withheld to satisfy tax obligations upon vesting).
- Shares owned after transaction: filing does not disclose a total common-stock holding; footnote notes 5,230 RSUs remain unvested/not yet delivered.
- Footnotes: F1 — shares were withheld by the issuer to cover the Reporting Person’s tax withholding on RSUs granted March 14, 2024. F2 — there are 5,230 restricted stock units that have not yet vested or been delivered.
Context This was a routine tax-withholding event related to RSU vesting (a common “cashless” mechanism where the company retains shares to cover taxes). Such withholdings are administrative and do not necessarily indicate a buy/sell signal by the insider.
Insider Transaction Report
Form 4
GLAUKOS CorpGKOS
Thurman Alex R.
SVP & CHIEF FINANCIAL OFFICER
Transactions
- Tax Payment
Common Stock
[F1][F2]2026-04-02$109.60/sh−1,589$174,154→ 43,681 total
Footnotes (2)
- [F1]Consists of shares withheld by the Issuer with respect to tax withholding obligations of the Reporting Person upon vesting and delivery of shares of common stock underlying restricted stock units previously granted by the Issuer on March 14, 2024.
- [F2]Includes 5,230 restricted stock units that have not yet vested or been delivered to the Reporting Person.
Signature
Diana Scherer, Attorney-in-Fact|2026-04-03