GKOS (GKOS) insider sells 3,630 shares total across April and June 2026

Rhea-AI Filing Summary

GKOS reported Form 144 notice related to Common Stock transactions by Tomas Navratil. The filing shows sales of $246,177.94 for 2,093 shares on 04/10/2026 and $200,855.16 for 1,537 shares on 06/16/2026. The record also lists 716 shares issued on 03/24/2025 from Restricted Stock Vesting for compensation.

Insights

Insider Transactions Analyst

Form 144 shows recent dispositions by an executive with prior restricted stock vesting.

The filing lists two dispositions: 2,093 shares for $246,177.94 on 04/10/2026 and 1,537 shares for $200,855.16 on 06/16/2026. It also records 716 vested shares on 03/24/2025 described as Restricted Stock Vesting.

These entries are transactional disclosures required when restricted or control stock is sold under Rule 144; they document amounts and dates but do not, by themselves, indicate motive or trading plan details. Subsequent filings or broker confirmations would provide trade execution context.

Key Figures

Shares sold (04/10/2026): 2,093 shares Proceeds (04/10/2026): $246,177.94 Shares sold (06/16/2026): 1,537 shares +2 more

5 metrics

Shares sold (04/10/2026) 2,093 shares reported sale on <date>04/10/2026</date>

Proceeds (04/10/2026) $246,177.94 proceeds reported for the 2,093-share sale

Shares sold (06/16/2026) 1,537 shares reported sale on <date>06/16/2026</date>

Proceeds (06/16/2026) $200,855.16 proceeds reported for the 1,537-share sale

Restricted shares vested 716 shares Restricted Stock Vesting on <date>03/24/2025</date>

Key Terms

Form 144, Restricted Stock Vesting, Fidelity Brokerage Services LLC

3 terms

Form 144 regulatory

"Lists sales and broker details required for resale of restricted stock"

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.

Restricted Stock Vesting financial

"03/24/2025 Restricted Stock Vesting Issuer Compensation 716"

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.

Fidelity Brokerage Services LLC other

"Common | Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI"

FAQ

What did GKOS's Form 144 disclose about Tomas Navratil's trades?

It discloses sales of 2,093 shares for $246,177.94 on 04/10/2026 and 1,537 shares for $200,855.16 on 06/16/2026. The filing lists these dispositions and a prior vesting of 716 shares on 03/24/2025.

Does the filing state why the shares were sold for GKOS?

No. The Form 144 lists transaction dates, share counts, and proceeds but does not state the seller's motive or whether sales were pre‑arranged; no reason for the dispositions is provided in the excerpt.

Was any restricted stock involved in the GKOS filing?

Yes. The record shows 716 shares issued on 03/24/2025 under Restricted Stock Vesting and labeled as compensation in the excerpt.

Who acted as broker or intermediary on the reported GKOS trades?

The excerpt lists Fidelity Brokerage Services LLC with an address and a 716 figure on the broker line, indicating brokerage involvement; the filing shows broker details but not full execution specifics.

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

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Available on EDGAR 07/01/2026 - 12:38 PM Accepted by SEC EDGAR 07/01/2026 - 12:37 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	716	99566.96	58733911	07/01/2026	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	03/24/2025	Restricted Stock Vesting	Issuer			716	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	04/10/2026	2093	246177.94
Tomas Navratil 1 Glaukos Way Aliso Viejo CA 92656	Common	06/16/2026	1537	200855.16

144: Remarks and Signature

Remarks
Date of Notice	07/01/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/12/2026
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/Wade Moss, 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)