Glaukos development chief sells 1,615 shares

Q: How many GKOS shares did Tomas Navratil sell?

Tomas Navratil sold 1,615 GLAUKOS Corp common shares on September 25, 2026, across four reported transactions: 167, 136, 229 and 1,083 shares. The weighted-average prices were $151.70, $152.71, $154.24 and $154.88 per share, respectively; the sales were under a plan adopted June 12, 2026.

Q: What price ranges were reported for Tomas Navratil's GKOS sales?

The reported trade-price ranges were $151.23 to $152.09 for 167 shares, $152.45 to $153.44 for 136 shares, $153.48 to $154.46 for 229 shares, and $154.49 to $155.46 for 1,083 shares. The reported transaction prices are weighted averages.

GLAUKOS Corp chief development officer Tomas Navratil reported selling 1,615 common shares on September 25, 2026, across four transactions: 167 shares at a weighted-average $151.70 per share, 136 at $152.71, 229 at $154.24 and 1,083 at $154.88.

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Filing Sentiment

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Rhea-AI Filing Summary

GLAUKOS Corp chief development officer Tomas Navratil reported selling 1,615 common shares on September 25, 2026, across four transactions: 167 shares at a weighted-average $151.70 per share, 136 at $152.71, 229 at $154.24 and 1,083 at $154.88. The sales were made under a Rule 10b5-1 trading plan adopted June 12, 2026; each reported price reflects multiple trades.

Insider Trade Summary 10b5-1

Net Seller: 1,615 shares

Net Sell 4 txns

Insider Navratil Tomas

Role CHIEF DEVELOPMENT OFFICER

Sold 1,615 shs ($249K)

Type	Security	Shares	Price	Value
Sale	Common Stock ^{F1, F2, F3}	167	$151.70	$25K
Sale	Common Stock ^{F1, F4, F3}	136	$152.71	$21K
Sale	Common Stock ^{F1, F5, F3}	229	$154.24	$35K
Sale	Common Stock ^{F1, F6, F3}	1,083	$154.88	$168K

Holdings After Transaction: Common Stock — 70,818 shares (Direct)

Footnotes (6)

F1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.
F2. This transaction was executed in multiple trades at prices ranging from $151.23 to $152.09. 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.
F3. Includes 38,817 restricted stock units that have not yet vested or been delivered to the Reporting Person.
F4. This transaction was executed in multiple trades at prices ranging from $152.45 to $153.44. 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.
F5. This transaction was executed in multiple trades at prices ranging from $153.48 to $154.46. 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.
F6. This transaction was executed in multiple trades at prices ranging from $154.49 to $155.46. 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.

Key Figures

Weighted-average sale price: 167 shares at $151.70 per share Weighted-average sale price: 136 shares at $152.71 per share Weighted-average sale price: 229 shares at $154.24 per share +1 more

4 metrics

Weighted-average sale price 167 shares at $151.70 per share September 25, 2026; multiple trades priced from $151.23 to $152.09

Weighted-average sale price 136 shares at $152.71 per share September 25, 2026; multiple trades priced from $152.45 to $153.44

Weighted-average sale price 229 shares at $154.24 per share September 25, 2026; multiple trades priced from $153.48 to $154.46

Weighted-average sale price 1,083 shares at $154.88 per share September 25, 2026; multiple trades priced from $154.49 to $155.46

Key Terms

Rule 10b5-1 trading plan, restricted stock units, weighted average price

3 terms

Rule 10b5-1 trading plan regulatory

"effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

restricted stock units financial

"Includes 38,817 restricted stock units that have not yet vested"

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.

weighted average price financial

"price reported above 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.

FAQ

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

How many GKOS shares did Tomas Navratil sell?

Tomas Navratil sold 1,615 GLAUKOS Corp common shares on September 25, 2026, across four reported transactions: 167, 136, 229 and 1,083 shares. The weighted-average prices were $151.70, $152.71, $154.24 and $154.88 per share, respectively; the sales were under a plan adopted June 12, 2026.

What price ranges were reported for Tomas Navratil's GKOS sales?

The reported trade-price ranges were $151.23 to $152.09 for 167 shares, $152.45 to $153.44 for 136 shares, $153.48 to $154.46 for 229 shares, and $154.49 to $155.46 for 1,083 shares. The reported transaction prices are weighted averages.

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

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Available on EDGAR 09/28/2026 - 06:24 PM Accepted by SEC EDGAR 09/28/2026 - 06:23 PM

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)
09/25/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	09/25/2026		S⁽¹⁾		167	D	$151.7⁽²⁾	72,266⁽³⁾	D
Common Stock	09/25/2026		S⁽¹⁾		136	D	$152.71⁽⁴⁾	72,130⁽³⁾	D
Common Stock	09/25/2026		S⁽¹⁾		229	D	$154.24⁽⁵⁾	71,901⁽³⁾	D
Common Stock	09/25/2026		S⁽¹⁾		1,083	D	$154.88⁽⁶⁾	70,818⁽³⁾	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.

2. This transaction was executed in multiple trades at prices ranging from $151.23 to $152.09. 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.

3. Includes 38,817 restricted stock units that have not yet vested or been delivered to the Reporting Person.

4. This transaction was executed in multiple trades at prices ranging from $152.45 to $153.44. 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.

5. This transaction was executed in multiple trades at prices ranging from $153.48 to $154.46. 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.

6. This transaction was executed in multiple trades at prices ranging from $154.49 to $155.46. 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.

	Diana Scherer, Attorney-in-Fact	09/28/2026
	** 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)

Source: View Original Filing on SEC EDGAR