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

Rhea-AI Filing Summary

GLAUKOS Corp director Gilbert H. Kliman exercised stock options and sold shares in the company. He exercised options for 5,000 shares of common stock at $24.69 per share, then sold 5,000 shares in the open market at an average price of $140.76 per share.

After these transactions, he directly owns 35,528 shares of common stock, which includes 2,731 restricted stock units that have not yet vested or been delivered, as well as vested units with deferred delivery. The option exercised was granted on June 2, 2016 and fully vested one year later, with no remaining balance after this exercise.

Insider Trade Summary

Net Seller: 5,000 shares ($703,800)

Net Sell 3 txns

Insider Kliman Gilbert H

Role null

Sold 5,000 shs ($704K)

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	$140.76	$704K

Holdings After Transaction: Stock Option (Right to Buy) — 0 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: $140.76/share Options exercised: 5,000 shares +5 more

8 metrics

Shares sold 5,000 shares Open-market sale of common stock at $140.76 per share on May 14, 2026

Sale price $140.76/share Average price for 5,000 GLAUKOS common shares sold

Options exercised 5,000 shares Exercise of stock option into common stock at $24.69 per share

Exercise price $24.69/share Conversion or exercise price of stock option (right to buy)

Shares held after 35,528 shares Total direct GLAUKOS common stock ownership following transactions

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

Option grant date June 2, 2016 Grant date of fully vested stock option exercised

Option expiration June 2, 2026 Expiration date of the exercised stock option, now with zero balance

Key Terms

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

4 terms

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.

Stock Option (Right to Buy) financial

"security_title: "Stock Option (Right to Buy)" with 5,000 shares underlying"

derivative security financial

"transaction_code_description: "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.

open-market sale financial

"transaction_action: "open-market sale" for 5,000 common shares"

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.

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)
05/14/2026

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	05/14/2026		M		5,000	A	$24.69	40,528(1)	D
Common Stock	05/14/2026		S		5,000	D	$140.76	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	05/14/2026		M			5,000	06/02/2017(2)	06/02/2026	Common Stock	5,000	$24.69	0	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	05/18/2026
	** 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 insider transactions did Gilbert H. Kliman report at GLAUKOS (GKOS)?

Director Gilbert H. Kliman reported exercising options for 5,000 GLAUKOS shares at $24.69, then selling 5,000 common shares at $140.76 in an open-market transaction. These moves form a typical exercise-and-sell pattern for previously granted stock options.

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

He sold 5,000 shares of GLAUKOS common stock at an average price of $140.76 per share. The sale was reported as an open-market transaction, following the exercise of stock options covering the same number of shares on the same date.

What stock options did the GLAUKOS (GKOS) director exercise in this Form 4?

He exercised a stock option labeled “Stock Option (Right to Buy)” for 5,000 underlying GLAUKOS common shares at $24.69 per share. The option was granted on June 2, 2016, fully vested after one year, and had no remaining balance after this exercise.

How many GLAUKOS (GKOS) shares does Gilbert H. Kliman hold after these transactions?

Following the reported transactions, he directly holds 35,528 GLAUKOS common shares. This figure includes 2,731 restricted stock units that are unvested or deferred, along with any vested but deferred units, providing a clearer picture of his remaining equity stake.

What restricted stock units are included in the GLAUKOS (GKOS) director’s reported holdings?

His reported 35,528-share position includes 2,731 restricted stock units that have not yet vested or been delivered, plus units that have vested but whose delivery has been deferred. These units represent additional equity that may convert into delivered shares over time.