Glaukos officer plans sale of 1,457 shares

Officer Tomas Navratil filed a Rule 144 notice to sell 1,457 Glaukos common shares tied to vested restricted stock, with recent prior sales also reported.

Rhea-AI Filing Summary

GLAUKOS Corp (GKOS) is the issuer for a Rule 144 notice filed on behalf of officer Tomas Navratil covering planned sales of 1,457 shares of common stock. The shares relate to restricted stock vesting events dated March 22, 2025 (709 shares) and March 24, 2025 (748 shares), listed as compensation.

The notice also lists prior open-market sales by Tomas Navratil over the last three months, including transactions on June 16, 2026, July 1, 2026, and August 28, 2026, with share counts and dollar amounts disclosed.

Key Figures

Planned shares to be sold: 1,457 shares Restricted stock vesting March 22, 2025: 709 shares Restricted stock vesting March 24, 2025: 748 shares +5 more

8 metrics

Planned shares to be sold 1,457 shares Total common shares covered by the Rule 144 notice

Restricted stock vesting March 22, 2025 709 shares Common shares from restricted stock vesting categorized as compensation

Restricted stock vesting March 24, 2025 748 shares Common shares from restricted stock vesting categorized as compensation

Shares sold June 16, 2026 1,537 shares Common shares sold during the past 3 months for $200,855.16

Proceeds June 16, 2026 sale $200,855.16 Consideration for 1,537 common shares sold

Shares sold July 1, 2026 716 shares Common shares sold during the past 3 months for $99,566.96

Shares sold August 28, 2026 13,744 shares Common shares sold during the past 3 months for $2,483,097.96

Proceeds August 28, 2026 sale $2,483,097.96 Consideration for 13,744 common shares sold

Key Terms

Rule 144, restricted stock vesting, compensation, attorney-in-fact, +1 more

5 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

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.

restricted stock vesting financial

"Common | 03/22/2025 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

compensation financial

"709 | 03/22/2025 | Compensation"

attorney-in-fact regulatory

"as attorney-in-fact for Tomas Navratil"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

duly authorized representative regulatory

"as a duly authorized representative of Fidelity Brokerage Services LLC"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did GLAUKOS Corp (GKOS) disclose in this Form 144 filing?

The filing reports a Rule 144 notice for planned sales of 1,457 shares of GLAUKOS common stock for the account of officer Tomas Navratil, arising from restricted stock vesting compensation awards in March 2025, plus prior sales during the last three months.

How many GKOS shares does Tomas Navratil plan to sell under this notice?

The notice covers 1,457 shares of GLAUKOS common stock. These shares are tied to restricted stock vesting events on March 22, 2025 (709 shares) and March 24, 2025 (748 shares), both categorized as compensation.

What recent GKOS share sales by Tomas Navratil are reported in the last 3 months?

Reported sales include 1,537 shares on June 16, 2026 for $200,855.16, 716 shares on July 1, 2026 for $99,566.96, and 13,744 shares on August 28, 2026 for $2,483,097.96, all in GLAUKOS common stock.

What is the relationship of Tomas Navratil to GLAUKOS Corp (GKOS)?

Tomas Navratil is identified in the notice as an officer of GLAUKOS Corp. The securities to be sold and those sold in the prior three months are reported for his account under Rule 144 requirements.

Who is executing the Form 144 filing for the GKOS officer?

The notice is signed by Gary Redman as a duly authorized representative of Fidelity Brokerage Services LLC, acting as attorney-in-fact for Tomas Navratil, indicating Fidelity is handling the Rule 144 sale process.

On which market is the GKOS stock in this Form 144 listed?

The securities information section identifies the GLAUKOS common stock involved in the notice as listed on the NYSE, with Fidelity Brokerage Services LLC named as the broker handling the transaction.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/16/2026 - 04:17 PM Accepted by SEC EDGAR 09/16/2026 - 04:17 PM Learn about SEC filing dates

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	0001920053
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	GLAUKOS Corp
SEC File Number	001-37463
Address of Issuer	1 GLAUKOS WAY ALISO VIEJO CALIFORNIA 92656
Phone	949-367-9600
Name of Person for Whose Account the Securities are To Be Sold	Navratil Tomas
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	Officer

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	1457	243207.31	58983937	09/16/2026	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	03/22/2025	Restricted Stock Vesting	Issuer			709	03/22/2025	Compensation
Common	03/24/2025	Restricted Stock Vesting	Issuer			748	03/24/2025	Compensation

* 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
Tomas Navratil 1 Glaukos Way Aliso Viejo CA 92656	Common	06/16/2026	1537	200855.16
Tomas Navratil 1 Glaukos Way Aliso Viejo CA 92656	Common	07/01/2026	716	99566.96
Tomas Navratil 1 Glaukos Way Aliso Viejo CA 92656	Common	08/28/2026	13744	2483097.96

144: Remarks and Signature

Remarks
Date of Notice	09/16/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/12/2026
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	/s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Tomas Navratil
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)