Alex R. Thurman to sell 10,000 Glaukos (GKOS) shares under Form 144

Rhea-AI Filing Summary

Alex R. Thurman filed a notice to sell 10,000 shares of Glaukos common stock. The shares are planned to be sold on the NYSE through Fidelity Brokerage, with a stated value of $1,600,000.00. They were acquired via a cash stock option exercise dated July 16, 2026. Over the prior three months, Thurman reported three separate 10,000-share sales of Glaukos common stock, with transaction values of $1,400,000.00, $1,500,000.00 and $1,550,000.00.

Key Figures

Planned sale shares: 10,000 shares Planned sale value: $1,600,000.00 Key transaction date: 07/16/2026 +3 more

6 metrics

Planned sale shares 10,000 shares Common stock Alex R. Thurman plans to sell on the NYSE

Planned sale value $1,600,000.00 Stated value for 10,000 Glaukos common shares in the planned sale

Key transaction date 07/16/2026 Date listed in connection with the stock option exercise and planned sale

Sale on 04/30/2026 10,000 shares; $1,400,000.00 Glaukos common stock sold by Alex R. Thurman during the past three months

Sale on 07/06/2026 10,000 shares; $1,500,000.00 Glaukos common stock sold by Alex R. Thurman during the past three months

Sale on 07/09/2026 10,000 shares; $1,550,000.00 Glaukos common stock sold by Alex R. Thurman during the past three months

Key Terms

Securities To Be Sold, Securities Sold During The Past 3 Months, Stock Option Exercise

3 terms

Securities To Be Sold regulatory

"Appears as the heading "144: Securities To Be Sold""

Securities Sold During The Past 3 Months regulatory

"Shown as "144: Securities Sold During The Past 3 Months""

Stock Option Exercise financial

"Listed as the nature of acquisition: "Stock Option Exercise""

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

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Available on EDGAR 07/16/2026 - 12:18 PM Accepted by SEC EDGAR 07/16/2026 - 12:18 PM Learn about SEC filing dates

FAQ

What Glaukos (GKOS) share sale is Alex R. Thurman planning?

Alex R. Thurman plans to sell 10,000 shares of Glaukos common stock. The planned transaction will occur on the NYSE through Fidelity Brokerage, with a stated value of $1,600,000.00 in this planned sale.

How were the Glaukos (GKOS) shares being sold by Alex R. Thurman acquired?

The 10,000 Glaukos shares were acquired through a stock option exercise paid in cash. The notice lists a date of July 16, 2026 connected to this stock option exercise and to the securities that are now planned to be sold.

What prior three-month Glaukos (GKOS) sales has Alex R. Thurman reported?

Over the past three months, Alex R. Thurman reported three 10,000-share sales of Glaukos common stock. The listed transaction values were $1,400,000.00 on April 30, 2026, $1,500,000.00 on July 6, 2026, and $1,550,000.00 on July 9, 2026.

On which market and through which broker will the planned Glaukos (GKOS) sale occur?

The planned 10,000-share Glaukos sale is to be executed on the NYSE through Fidelity Brokerage Services LLC. These details appear in the securities information section, alongside the stated $1,600,000.00 value for the planned common stock sale.

What is the stated value of the Glaukos (GKOS) shares Alex R. Thurman plans to sell?

The 10,000 Glaukos common shares planned for sale carry a stated value of $1,600,000.00. This figure is listed together with the broker information and NYSE as the market where the transaction is expected to take place.

What key date is associated with Alex R. Thurman’s Glaukos (GKOS) stock option exercise and sale plan?

The notice associates the Glaukos transaction with July 16, 2026. This date appears in connection with the stock option exercise for cash and the planned sale of 10,000 common shares disclosed in the Form 144 securities information sections.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	10000	1600000.00	58733911	07/16/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	07/16/2026	Stock Option Exercise	Issuer			10000	07/16/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Alex R. Thurman 1 Glaukos Way Aliso Viejo CA 92656	Common	04/30/2026	10000	1400000.00
Alex R. Thurman 1 Glaukos Way Aliso Viejo CA 92656	Common	07/06/2026	10000	1500000.00
Alex R. Thurman 1 Glaukos Way Aliso Viejo CA 92656	Common	07/09/2026	10000	1550000.00

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)