Insider Joseph Gilliam plans $1.34M Glaukos (NYSE: GKOS) sale

Rhea-AI Filing Summary

Joseph Gilliam filed a notice of proposed sale of Glaukos common stock under Rule 144. The notice covers 10,498 common shares to be sold through Fidelity Brokerage Services LLC on or about 01/22/2026 on the NYSE, with an aggregate market value of 1,340,378.21. Shares outstanding were 57,434,740 at the time referenced.

The 10,498 shares were acquired on 01/22/2026 via exercise of an option originally granted on 03/24/2022, paid for in cash. Over the prior three months, Joseph Gilliam sold 19,340 shares of common stock on 11/18/2025 for gross proceeds of 1,740,600.00 and 4,502 shares on 01/21/2026 for gross proceeds of 561,167.78.

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	10498	1340378.21	57434740	01/22/2026	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	01/22/2026	Option Granted 03/24/2022	Issuer			10498	01/22/2026	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
Joseph Gilliam 1 Glaukos Way Aliso Viejo CA 92656	Common	11/18/2025	19340	1740600.00
Joseph Gilliam 1 Glaukos Way Aliso Viejo CA 92656	Common	01/21/2026	4502	561167.78

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)

FAQ

What does the Form 144 filing for GKOS disclose?

The Form 144 filing discloses that Joseph Gilliam intends to sell 10,498 common shares of Glaukos under Rule 144 through Fidelity Brokerage Services LLC on or about 01/22/2026 on the NYSE, with an aggregate market value of 1,340,378.21.

How many Glaukos (GKOS) shares are covered by Joseph Gilliams planned sale?

The planned sale covers 10,498 common shares of Glaukos stock, as listed in the securities information section of the notice.

What is the aggregate market value of the GKOS shares in the planned Rule 144 sale?

The aggregate market value of the 10,498 Glaukos common shares covered by the notice is 1,340,378.21, based on the pricing assumptions used in the filing.

How and when were the GKOS shares in the Form 144 acquired?

The 10,498 shares were acquired on 01/22/2026 through an option exercise described as Option Granted 03/24/2022, with the issuer as the counterparty and the exercise price paid in cash.

What prior Glaukos (GKOS) share sales by Joseph Gilliam are disclosed?

Over the past three months, Joseph Gilliam sold 19,340 Glaukos common shares on 11/18/2025 for gross proceeds of 1,740,600.00 and 4,502 shares on 01/21/2026 for gross proceeds of 561,167.78.

How many Glaukos (GKOS) shares were outstanding according to the Form 144?

The notice lists 57,434,740 Glaukos common shares as outstanding in the securities information table.