Thomas W. Burns - 24 Mar 2022 Form 4/A - Amendment Insider Report for GLAUKOS Corp (GKOS)

Role: Chief Executive Officer, Director
Signature: Diana Scherer, Attorney-in-Fact
Issuer symbol: GKOS
Transactions as of: 24 Mar 2022
Net transactions value: $0
Form type: 4/A - Amendment
Filing time: 19 Apr 2022, 06:31:00 UTC
Date Of Original Report: 28 Mar 2022
Previous filing: 18 Mar 2022
Next filing: 05 Apr 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	GKOS	Common Stock	Award	$0	+20,841	+3.2%	$0.000000	666,514	24 Mar 2022	Direct	F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	GKOS	Stock Option (Right to Buy)	Award	$0	+42,078		$0.000000	42,078	24 Mar 2022	Common Stock	42,078	$55.18	Direct	F3, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	This Form 4/A amends a Form 4 filed March 28, 2022 that incorrectly reported the number of restricted stock units ("RSUs") granted to the Reporting Person on March 24, 2022 as 21,294. The correct number of RSUs granted was 20,841, as shown above.
F2	After giving effect to this amendment and the transactions reported on the Form 4 filed by the Reporting Person on April 5, 2022, the Reporting Person directly owns 666,514 shares, which includes 80,860 RSUs that have not yet vested and been delivered, as of April 5, 2022.
F3	This Form 4/A amends a Form 4 filed March 28, 2022 that incorrectly reported the number of options to purchase shares of common stock granted to the Reporting Person on March 24, 2022 as 42,993. The correct number of stock options granted was 42,078, as shown above.
F4	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.