Tomas Navratil

Insider

First SEC filing: April 5, 2022 · Latest: June 18, 2026

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Insider at

0 buys (P) 2 sells (S) Net: $-300,422 + 3 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

3 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
July 1, 2026	GKOS	S 10b5-1	716	$139.06	$99,567	87,634 Direct	-0.81%	Disposed	37.0% (price as of 2026-08-20)
June 25, 2026	GKOS	F	483	$142.57	$68,861	88,350 Direct	-0.54%	Disposed	33.6% (price as of 2026-08-20)
June 16, 2026	GKOS	S 10b5-1	1,537	$130.68	$200,855	88,833 Direct	-1.70%	Disposed	45.8% (price as of 2026-08-20)
April 19, 2022	GKOS	F	338	$60.47	$20,439	37,191 Direct	-0.90%	Disposed	215.1% (price as of 2026-08-20)
April 1, 2022	GKOS	F	337	$60.78	$20,483	37,529 Direct	-0.89%	Disposed	213.5% (price as of 2026-08-20)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
April 5, 2022	GKOS	Common Stock	37,866	Direct
April 5, 2022	GKOS	Stock Option (Right to Buy)→ Common Stock (4,181)	4,181	Direct
April 5, 2022	GKOS	Stock Option (Right to Buy)→ Common Stock (8,788)	8,788	Direct