Glaukos (GKOS) Form 144 shows 10,000-share sale, option exercise

Rhea-AI Filing Summary

Glaukos Corporation notice reports an intended sale of 10,000 shares of Common Stock on 07/09/2026 by Fidelity Brokerage Services LLC, reflecting a reported aggregate value of $1,550,000.00. The filing also records a stock option exercise tied to the same 10,000 shares with cash consideration on 07/09/2026.

The excerpt lists prior Rule 144 dispositions by Alex R. Thurman: 10,000 shares on 04/30/2026 for $1,400,000.00 and 10,000 shares on 07/06/2026 for $1,500,000.00. Shares outstanding are shown as 58,733,911 as of 07/09/2026.

Insights

Securities Counsel

Rule 144 notice of planned resale following option exercise; prior sales disclosed.

The filing documents an intended resale of 10,000 shares under Rule 144 with an associated stock option exercise reported as cash consideration on 07/09/2026. The excerpt includes two prior Rule 144 dispositions by the named individual with stated dollar amounts.

Disclosure shows shares outstanding 58,733,911 as of 07/09/2026, which provides a baseline for scale. Cash‑flow treatment and whether proceeds go to the issuer or selling holder are not detailed beyond the reported exercise and sale amounts in the excerpt.

Key Figures

Offered shares: 10,000 shares Reported aggregate value: $1,550,000.00 Shares outstanding: 58,733,911 shares +2 more

5 metrics

Offered shares 10,000 shares Intended sale on <date>07/09/2026</date>

Reported aggregate value $1,550,000.00 Value associated with the 10,000-share sale on <date>07/09/2026</date>

Shares outstanding 58,733,911 shares As of <date>07/09/2026</date>

Prior sale — Apr 30, 2026 10,000 shares Proceeds reported as $1,400,000.00

Prior sale — Jul 06, 2026 10,000 shares Proceeds reported as $1,500,000.00

Key Terms

Form 144, Rule 144, stock option exercise

3 terms

Form 144 regulatory

"Securities To Be Sold ... 07/09/2026 ... Stock Option Exercise"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Rule 144 regulatory

"Securities Sold During The Past 3 Months ... Alex R. Thurman"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

stock option exercise financial

"Stock Option Exercise | Issuer ... 10000 ... Cash"

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 07/09/2026 - 12:42 PM Accepted by SEC EDGAR 07/09/2026 - 12:42 PM Learn about SEC filing dates

FAQ

What does Glaukos (GKOS) Form 144 report?

The filing reports an intended sale of 10,000 shares on 07/09/2026, linked to a stock option exercise and showing a reported value of $1,550,000.00.

Who is the selling party named in the Form 144 for GKOS?

The excerpt lists Fidelity Brokerage Services LLC as the broker for the 10,000-share sale on 07/09/2026, with prior dispositions by Alex R. Thurman also disclosed.

What prior sales does the Form 144 disclose for Alex R. Thurman?

The filing shows two prior Rule 144 sales by Alex R. Thurman: 10,000 shares on 04/30/2026 for $1,400,000.00 and 10,000 shares on 07/06/2026 for $1,500,000.00.

How many Glaukos shares were outstanding per the excerpt?

The excerpt lists 58,733,911 shares outstanding as of 07/09/2026, provided as a baseline figure in the same filing extract.

Does the Form 144 state who receives the sale proceeds?

The excerpt ties the transaction to a stock option exercise with cash noted, but it does not specify in the provided text whether proceeds are paid to the issuer or to selling holders.

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	1550000.00	58733911	07/09/2026	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	07/09/2026	Stock Option Exercise	Issuer			10000	07/09/2026	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

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)