Glaukos development chief sells 44,436 shares

The options vest over four years, with 25% vesting on the first anniversary and the remaining amount in equal monthly installments over the following three years.

Available on EDGAR 11/03/2026 - 09:45 PM EST Accepted by SEC EDGAR 11/03/2026 - 09:45 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

GLAUKOS Corp (GKOS) Chief Development Officer Tomas Navratil exercised options on October 30, 2026, acquiring 4,181 shares at $55 per share and 8,788 shares at $85.94 per share. On the same date, he sold 44,436 shares across four reported transactions at weighted-average prices of $237.54, $238.56, $239.64 and $240.52 per share. The corresponding trade-price ranges were $237.09–$238.07, $238.11–$239.11, $239.13–$240.03 and $240.17–$240.87. No Rule 10b5-1 plan is reported.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 8 txns

Insider Navratil Tomas

Role CHIEF DEVELOPMENT OFFICER

Sold 44,436 shs ($10.62M)

Approx. gross sale proceeds $10.62M

Approx. exercise cost $985K

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy) F7	4,181	$0.00	$0.00
Exercise	Stock Option (Right to Buy) F7	8,788	$0.00	$0.00
Exercise	Common Stock F1	4,181	$55.00	$230K
Exercise	Common Stock F2	8,788	$85.94	$755K
Sale	Common Stock F3, F2	10,221	$237.54	$2.43M
Sale	Common Stock F4, F2	12,836	$238.56	$3.06M
Sale	Common Stock F5, F2	14,943	$239.64	$3.58M
Sale	Common Stock F6, F2	6,436	$240.52	$1.55M

Holdings After Transaction: Stock Option (Right to Buy) — 0 contracts (Direct); Common Stock — 37,328 shares (Direct)

Footnotes (7)

1. F1. Includes 37,328 restricted stock units that have not yet vested or been delivered to the Reporting Person. Additionally, the amount reported has been adjusted by 259 shares to correct a clerical error.
2. F2. Includes 37,328 restricted stock units that have not yet vested or been delivered to the Reporting Person.
3. F3. This transaction was executed in multiple trades at prices ranging from $237.09 to $238.07. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
4. F4. This transaction was executed in multiple trades at prices ranging from $238.11 to $239.11. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was
5. F5. This transaction was executed in multiple trades at prices ranging from $239.13 to $240.03. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was
6. F6. This transaction was executed in multiple trades at prices ranging from $240.17 to $240.87. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was
7. F7. These options vest over four years from the grant date, with 25% vesting on the first anniversary of the grant date and the remaining amount vesting in equal monthly installments over the following three years.

Key Figures

Shares sold: 44,436 shares Options exercised: 4,181 shares at $55 per share Options exercised: 8,788 shares at $85.94 per share +4 more

7 metrics

Shares sold 44,436 shares Four reported transactions on October 30, 2026

Options exercised 4,181 shares at $55 per share October 30, 2026

Options exercised 8,788 shares at $85.94 per share October 30, 2026

Shares sold 10,221 shares at $237.54 per share October 30, 2026; weighted-average price

Shares sold 12,836 shares at $238.56 per share October 30, 2026; weighted-average price

Shares sold 14,943 shares at $239.64 per share October 30, 2026; weighted-average price

Shares sold 6,436 shares at $240.52 per share October 30, 2026; weighted-average price

Key Terms

weighted average price, restricted stock units, vesting

3 terms

weighted average price financial

"reflects the weighted average price"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

restricted stock units financial

"Includes 37,328 restricted stock units"

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.

vesting financial

"with 25% vesting on the first anniversary"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many GKOS shares did Tomas Navratil sell, and at what prices?

Chief Development Officer Tomas Navratil sold 44,436 shares on October 30, 2026, in four reported transactions. Their weighted-average prices were $237.54, $238.56, $239.64 and $240.52 per share; the respective trade-price ranges were $237.09–$238.07, $238.11–$239.11, $239.13–$240.03 and $240.17–$240.87. No Rule 10b5-1 plan is reported.

How many GKOS options did Tomas Navratil exercise?

On October 30, 2026, Tomas Navratil exercised options to acquire 4,181 shares at $55 per share and 8,788 shares at $85.94 per share. The options are reported with expiration dates of October 19, 2030 and March 18, 2031, respectively.

How do Tomas Navratil's GKOS options vest?

The options vest over four years from the grant date: 25% on the first anniversary, with the remaining amount vesting in equal monthly installments over the following three years.

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

Form 4 Insider Transactions: What Each Field Means →

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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^*

Navratil Tomas

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/30/2026

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	10/30/2026		M		4,181	A	$55	72,976(1)	D
Common Stock	10/30/2026		M		8,788	A	$85.94	81,764(2)	D
Common Stock	10/30/2026		S		10,221	D	$237.54(3)	71,543(2)	D
Common Stock	10/30/2026		S		12,836	D	$238.56(4)	58,707(2)	D
Common Stock	10/30/2026		S		14,943	D	$239.64(5)	43,764(2)	D
Common Stock	10/30/2026		S		6,436	D	$240.52(6)	37,328(2)	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)	$55	10/30/2026		M			4,181	(7)	10/19/2030	Common Stock	4,181	$0	0	D
Stock Option (Right to Buy)	$85.94	10/30/2026		M			8,788	(7)	03/18/2031	Common Stock	8,788	$0	0	D

Explanation of Responses:

1. Includes 37,328 restricted stock units that have not yet vested or been delivered to the Reporting Person. Additionally, the amount reported has been adjusted by 259 shares to correct a clerical error.

2. Includes 37,328 restricted stock units that have not yet vested or been delivered to the Reporting Person.

3. This transaction was executed in multiple trades at prices ranging from $237.09 to $238.07. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

4. This transaction was executed in multiple trades at prices ranging from $238.11 to $239.11. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was

5. This transaction was executed in multiple trades at prices ranging from $239.13 to $240.03. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was

6. This transaction was executed in multiple trades at prices ranging from $240.17 to $240.87. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was

7. These options vest over four years from the grant date, with 25% vesting on the first anniversary of the grant date and the remaining amount vesting in equal monthly installments over the following three years.

	Diana Scherer, Attorney-in-Fact	11/03/2026
	** 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)