Director at Glaukos (NYSE: GKOS) exercises options and sells 5,000 shares

Rhea-AI Filing Summary

GLAUKOS Corp director Gilbert H. Kliman reported an exercise-and-sell transaction in company stock. He exercised stock options to acquire 5,000 shares of Common Stock at $24.69 per share and on the same day sold 5,000 Common Stock shares in an open-market sale at $135.00 per share.

After these transactions, he directly holds 35,528 Common Stock shares, which include 2,731 restricted stock units that are unvested or deferred. The option exercised was originally granted on June 2, 2016 and had fully vested by the first anniversary of the grant date.

Insider Trade Summary

Net Seller: 5,000 shares ($675,000)

Net Sell 3 txns

Insider Kliman Gilbert H

Role null

Sold 5,000 shs ($675K)

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy)	5,000	$24.69	$123K
Exercise	Common Stock	5,000	$24.69	$123K
Sale	Common Stock	5,000	$135.00	$675K

Holdings After Transaction: Stock Option (Right to Buy) — 5,000 shares (Direct, null); Common Stock — 40,528 shares (Direct, null)

Footnotes (1)

1. Includes 2,731 restricted stock units that have not vested or been delivered to the Reporting Person, as well as restricted stock units that have vested but delivery of which has been deferred by the Reporting Person. This option was granted on June 2, 2016 and fully vested on the first anniversary of the grant date.

Key Figures

Shares sold: 5,000 shares Sale price: $135.00 per share Options exercised: 5,000 shares +4 more

7 metrics

Shares sold 5,000 shares Common Stock sold in open-market transaction

Sale price $135.00 per share Price for 5,000 Common Stock shares sold

Options exercised 5,000 shares Stock Option (Right to Buy) exercised into Common Stock

Exercise price $24.69 per share Exercise price of stock option granted June 2, 2016

Post-transaction holdings 35,528 shares Total Common Stock directly held after reported transactions

Restricted stock units 2,731 units Unvested or deferred RSUs included in reported holdings

Option expiration June 2, 2026 Expiration date of the exercised stock option

Key Terms

open-market sale, Stock Option (Right to Buy), restricted stock units, derivative security, +1 more

5 terms

open-market sale financial

"Sale in open market or private transaction"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Stock Option (Right to Buy) financial

"Stock Option (Right to Buy) with underlying Common Stock"

restricted stock units financial

"Includes 2,731 restricted stock units that have not 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.

derivative security financial

"Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

exercise or conversion financial

"Exercise or conversion of derivative security"

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED 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^*

Kliman Gilbert H

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/11/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/11/2026		M		5,000	A	$24.69	40,528(1)	D
Common Stock	05/11/2026		S		5,000	D	$135	35,528(1)	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$24.69	05/11/2026		M			5,000	06/02/2017(2)	06/02/2026	Common Stock	5,000	$24.69	5,000	D

Explanation of Responses:

1. Includes 2,731 restricted stock units that have not vested or been delivered to the Reporting Person, as well as restricted stock units that have vested but delivery of which has been deferred by the Reporting Person.

2. This option was granted on June 2, 2016 and fully vested on the first anniversary of the grant date.

	Diana Scherer, Attorney-in-Fact	05/13/2026
	** Signature of Reporting Person	Date
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 did GLAUKOS (GKOS) director Gilbert H. Kliman report in this Form 4?

Director Gilbert H. Kliman reported exercising stock options for 5,000 GLAUKOS shares at $24.69 and selling 5,000 shares at $135.00. These same-day transactions convert an option position into cash while maintaining a remaining direct equity stake in the company.

How many GLAUKOS (GKOS) shares did the director sell and at what price?

He sold 5,000 shares of GLAUKOS Common Stock in an open-market transaction at $135.00 per share. This single reported sale is part of a combined exercise-and-sell sequence disclosed for the same transaction date.

What stock options did the GLAUKOS (GKOS) director exercise in this filing?

Kliman exercised stock options covering 5,000 shares of GLAUKOS Common Stock at an exercise price of $24.69 per share. The option was granted on June 2, 2016 and had fully vested one year after the original grant date.

How many GLAUKOS (GKOS) shares does the director hold after these transactions?

Following the reported transactions, Kliman directly holds 35,528 shares of GLAUKOS Common Stock. This figure includes 2,731 restricted stock units that are either unvested or vested but with delivery deferred at his election, as explained in the filing footnote.

What do the restricted stock units mean in the GLAUKOS (GKOS) Form 4?

The filing notes 2,731 restricted stock units within the director’s reported holdings. These units either have not yet vested or have vested but their delivery has been deferred, so they represent additional equity that may be delivered as shares in the future.

Was the GLAUKOS (GKOS) director’s option fully vested before exercise?

Yes. The Form 4 states the option was granted on June 2, 2016 and fully vested on the first anniversary of that grant date. By the exercise date in this report, all 5,000 underlying shares were already vested and available for exercise.