GKOS insider sale: 517 shares from restricted stock vesting, prior 5,142-share sale noted

Rhea-AI Filing Summary

Form 144 notice for Glaukos Corp (GKOS) reports a proposed sale of 517 restricted common shares by a person whose securities vested on 09/19/2024 and were acquired as compensation. The broker listed is Fidelity Brokerage Services LLC and the aggregate market value of the proposed sale is $43,541.07 with an approximate sale date of 09/22/2025 on the NYSE. The filing also discloses that the same person sold 5,142 common shares on 09/11/2025 for gross proceeds of $453,607.98. The notice includes the standard representation that the seller does not possess undisclosed material adverse information about the issuer.

Positive

• Disclosure complies with Rule 144 by identifying acquisition method (restricted stock vesting) and compensation payment
• Broker and market details provided (Fidelity, NYSE) enabling clear transaction routing

Negative

• Limited context on materiality: filing does not disclose insider's total holdings or percentage ownership to assess impact
• No Rule 10b5-1 plan date provided in the visible remarks, so reliance on such a plan cannot be verified from this notice

Insights

Securities Analyst

TL;DR: Insider sale of vested restricted shares is routine and modest relative to company size; prior larger sale noted.

The filing shows a small proposed sale of 517 shares resulting from restricted stock vesting on 09/19/2024, valued at $43,541.07, executed through Fidelity with an approximate sale date of 09/22/2025. A prior sale by the same individual of 5,142 shares on 09/11/2025 generated $453,607.98. These disclosures are typical for insiders monetizing vested compensation and do not by themselves indicate company-operational issues. The amounts should be compared to the insider's total holdings and company market capitalization for materiality, information not provided in this notice.

Corporate Governance Expert

TL;DR: Form 144 properly documents a planned sale tied to compensation vesting; disclosure aligns with Rule 144 requirements.

The document identifies the nature of acquisition as Restricted Stock Vesting and the payment nature as Compensation, which supports compliance with Rule 144 sale notice rules. The seller attests to absence of undisclosed material information. The filing does not state any trading-plan adoption date under Rule 10b5-1, and no further governance concerns are raised within the provided content.

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	517	43541.07	57349987	09/22/2025	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	09/19/2024	Restricted Stock Vesting	Issuer			517	09/19/2024	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 One Glaukos Way Aliso Viejo CA 92656	Common	09/11/2025	5142	453607.98

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 for Glaukos (GKOS) report?

It reports a proposed sale of 517 vested restricted common shares acquired 09/19/2024, valued at $43,541.07, with an approximate sale date of 09/22/2025.

Who is the broker handling the proposed sale in the GKOS Form 144?

The broker listed is Fidelity Brokerage Services LLC (900 Salem Street, Smithfield, RI).

Did the insider sell any GKOS shares recently before this proposed sale?

Yes, the notice discloses a sale of 5,142 common shares on 09/11/2025 with gross proceeds of $453,607.98.

What was the nature of acquisition for the shares to be sold?

The shares were acquired through Restricted Stock Vesting and paid as Compensation on 09/19/2024.

Does the Form 144 state the seller has undisclosed material information about Glaukos?

The seller represents by signing the notice that they do not know any material adverse information about the issuer that has not been publicly disclosed.