STOCK TITAN

Glaukos (GKOS) CEO gifts 180,308 shares to family trust

Filing Impact
(Very High)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Glaukos Corp chairman and CEO Thomas William Burns reported non-market changes in his holdings. He transferred 180,308 shares of common stock as a bona fide gift from his direct ownership to the Burns Family Trust. Separately, a total of 9,937 shares were withheld by Glaukos at a price of $109.60 per share to satisfy his tax withholding obligations upon vesting and delivery of previously granted restricted stock units.

Following these transactions, Burns continues to hold common stock directly and indirectly through several trusts, and some of these positions include restricted stock units that have not yet vested or been delivered.

Positive

  • None.

Negative

  • None.
Insider Burns Thomas William
Role CHAIRMAN & CEO
Type Security Shares Price Value
Tax Withholding Common Stock 2,469 $109.60 $271K
Tax Withholding Common Stock 7,468 $109.60 $818K
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
Gift Common Stock 180,308 $0.00 --
Gift Common Stock 180,308 $0.00 --
Holdings After Transaction: Common Stock — 80,494 shares (Direct); Common Stock — 238,107 shares (Indirect, Through the Burns Annuity Trust)
Footnotes (1)
  1. The transaction reflects shares transferred from the Reporting Person's direct ownership to the Burns Family Trust. Consists of 82,963 restricted stock units that have not yet vested or been delivered to the Reporting Person. Consists of shares withheld by the Issuer with respect to tax withholding obligations of the Reporting Person upon vesting and delivery of shares of common stock underlying restricted stock units previously granted by the Issuer on March 24, 2022. Includes 78,274 restricted stock units that have not yet vested or been delivered to the Reporting Person. Consists of shares withheld by the Issuer with respect to tax withholding obligations of the Reporting Person upon vesting and delivery of shares of common stock underlying restricted stock units previously granted by the Issuer on March 14, 2024. Includes 64,090 restricted stock units that have not yet vested or been delivered to the Reporting Person.
Gifted shares 180,308 shares Bona fide gift from direct ownership to Burns Family Trust
Tax-withheld shares 9,937 shares Shares withheld to satisfy CEO’s tax obligations
Tax-withholding price $109.60 per share Price used for shares withheld for tax obligations
Direct holdings after gift 82,963 shares Direct position consisting of restricted stock units not yet vested or delivered
Direct holdings after tax withholdings 73,026 shares Common stock directly held after reported tax-withholding dispositions
Burns Family Trust holdings 1,141,593 shares Indirect ownership via the Burns Family Trust after the gift
Burns Annuity Trust holdings 238,107 shares Indirect ownership through the Burns Annuity Trust
Burns Charitable Remainder Trust holdings 120,000 shares Indirect ownership through the Burns Charitable Remainder Trust
bona fide gift financial
"The transaction code description is "Bona fide gift" for the transfer."
restricted stock units financial
"Consists of 82,963 restricted stock units that have not yet vested or been delivered"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
tax withholding obligations financial
"Consists of shares withheld by the Issuer with respect to tax withholding obligations"
indirect ownership financial
"Indirect holdings are reported through trusts such as the Burns Family Trust"
withheld by the Issuer financial
"Consists of shares withheld by the Issuer with respect to tax withholding obligations"
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Burns Thomas William

(Last)(First)(Middle)
C/O GLAUKOS CORPORATION
ONE GLAUKOS WAY

(Street)
ALISO VIEJO CALIFORNIA 92656

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
GLAUKOS Corp [ GKOS ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
CHAIRMAN & CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/02/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock04/01/2026G180,308(1)D$082,963(2)D
Common Stock04/01/2026G180,308A$01,141,593IThrough the Burns Family Trust
Common Stock04/02/2026F2,469(3)D$109.680,494(4)D
Common Stock04/02/2026F7,468(5)D$109.673,026(6)D
Common Stock238,107IThrough the Burns Annuity Trust
Common Stock120,000IThrough the Burns Charitable Remainder Trust
Common Stock100,000IThrough the Thomas W. Burns Irrevocable Trust
Common Stock100,000IThrough the Janet M. Burns Irrevocable Trust
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The transaction reflects shares transferred from the Reporting Person's direct ownership to the Burns Family Trust.
2. Consists of 82,963 restricted stock units that have not yet vested or been delivered to the Reporting Person.
3. Consists of shares withheld by the Issuer with respect to tax withholding obligations of the Reporting Person upon vesting and delivery of shares of common stock underlying restricted stock units previously granted by the Issuer on March 24, 2022.
4. Includes 78,274 restricted stock units that have not yet vested or been delivered to the Reporting Person.
5. Consists of shares withheld by the Issuer with respect to tax withholding obligations of the Reporting Person upon vesting and delivery of shares of common stock underlying restricted stock units previously granted by the Issuer on March 14, 2024.
6. Includes 64,090 restricted stock units that have not yet vested or been delivered to the Reporting Person.
Diana Scherer, Attorney-in-Fact04/03/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did Glaukos (GKOS) CEO Thomas Burns report?

Thomas Burns reported a bona fide gift of 180,308 Glaukos common shares from his direct ownership to the Burns Family Trust, plus 9,937 shares withheld by the company at $109.60 per share to cover tax obligations on vesting restricted stock units.

Did the Glaukos (GKOS) CEO sell shares in the open market?

The filing shows no open-market sales. It reports a bona fide gift of 180,308 shares to a family trust and 9,937 shares withheld by Glaukos to satisfy tax withholding obligations tied to vesting restricted stock units previously granted in 2022 and 2024.

How many Glaukos shares were used for tax withholding for the CEO?

A total of 9,937 Glaukos common shares were withheld by the issuer at $109.60 per share. These withholdings covered Thomas Burns’ tax obligations upon vesting and delivery of restricted stock units granted on March 24, 2022 and March 14, 2024.

What is the role of the Burns Family Trust in the Glaukos (GKOS) filing?

The Burns Family Trust is reported as an indirect owner of Glaukos common stock. The filing records a bona fide gift of 180,308 shares transferred from Thomas Burns’ direct holdings to the trust, increasing its indirect position to 1,141,593 shares after the transaction.

Do Thomas Burns’ reported Glaukos (GKOS) holdings include restricted stock units?

Yes. Footnotes state that portions of his reported positions consist of restricted stock units that have not yet vested or been delivered. These include tens of thousands of RSUs in certain direct and indirect holdings, reflecting equity awards that remain subject to future vesting conditions.