Glaukos (NYSE: GKOS) files Form 144 to sell 10,000 shares

Rhea-AI Filing Summary

Glaukos Corp. disclosure shows a reported sale transaction involving 10,000 shares of Common Stock tied to a Stock Option Exercise. The filing lists a broker/dealer Fidelity Brokerage Services LLC and dates including 04/30/2026 for a past sale and 07/06/2026 as a securities-to-be-sold date.

Insights

Securities Compliance Analyst

Form 144 reports an intended or completed resale of 10,000 common shares tied to an option exercise.

The excerpt lists a Stock Option Exercise and a broker-dealer, showing 10,000 shares associated with cash settlement and dates 04/30/2026 and 07/06/2026. This indicates a standard resale notice under applicable resale reporting rules.

Timing and cash‑flow treatment are stated as Cash for the securities-to-be-sold entry; subsequent filings or broker records would show execution details and purchaser identity.

Key Figures

Shares reported: 10,000 shares Cash amount (listed): $1,500,000.00 Cash amount (past sale): $1,400,000.00 +3 more

6 metrics

Shares reported 10,000 shares Securities to be sold / sold during past 3 months

Cash amount (listed) $1,500,000.00 Amount shown on a securities line in the excerpt (07/06/2026 row)

Cash amount (past sale) $1,400,000.00 Amount shown alongside a past sale dated <date>04/30/2026</date>

Broker/Dealer listed Fidelity Brokerage Services LLC Broker-dealer for the securities-to-be-sold entry

Reported sale date 04/30/2026 Date shown for securities sold during the past three months

Securities-to-be-sold date 07/06/2026 Date listed on the securities-to-be-sold row

Key Terms

Form 144, Stock Option Exercise, Broker/Dealer, Securities Sold During The Past 3 Months

4 terms

Form 144 regulatory

"144: Securities To Be Sold"

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.

Stock Option Exercise financial

"Common | 07/06/2026 | 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.

Broker/Dealer market

"Fidelity Brokerage Services LLC 900 Salem Street"

A broker/dealer is a firm or person that both carries out trades for clients (broker) and buys or sells securities from its own inventory (dealer). Think of it as a shop that can take customer orders and also sell items off its own shelves. Investors care because broker/dealers connect buyers and sellers, influence the price and speed of trades, hold securities or cash for short periods, and can create conflicts of interest that affect trade cost and reliability.

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months"

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Available on EDGAR 07/06/2026 - 11:46 AM Accepted by SEC EDGAR 07/06/2026 - 11:46 AM Learn about SEC filing dates

FAQ

What does Glaukos (GKOS) Form 144 report?

The Form 144 reports a resale notice for 10,000 shares of Common Stock related to a Stock Option Exercise, with dates shown as 04/30/2026 and 07/06/2026. It lists Fidelity Brokerage Services LLC as the broker/dealer.

Who is the broker/dealer listed on the GKOS filing?

The filing lists Fidelity Brokerage Services LLC with an address at 900 Salem Street, Smithfield. That broker-dealer is identified in the securities-to-be-sold row for the 10,000-share entry.

How many shares did the filing show sold in the past three months for GKOS?

The filing shows 10,000 shares sold during the past three months with a dated sale entry of 04/30/2026. The row ties that sale to a cash amount as reported in the excerpt.

What transaction type is associated with the 10,000 shares on the filing?

The transaction type is listed as Stock Option Exercise and the securities-to-be-sold row indicates Cash as the consideration method for the 10,000-share entry dated 07/06/2026.

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 CA 02917	10000	1500000.00	58733911	07/06/2026	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	07/06/2026	Stock Option Exercise	Issuer			10000	07/06/2026	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 Thurman 1 Glaukos Way Aliso Viejo CA 92656	Common	04/30/2026	10000	1400000.00

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)