Glaukos Ownership & Insider Activity

Glaukos (GKOS) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 1.2% of shares outstanding. Institutional investors hold 90.0%. Over the past 90 days, insiders made 5 sales worth $3.3M.

Shares Outstanding

58.984M

Shares Float

48.707M

Insider Shares Owned

714.619K

Insider % Owned

1.2%

Institutional Shares Held

53.061M

Institutional % Held

90.0%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$3.3M total

Net Activity

Net Selling

Net Value (90d)

-$3.3M

Glaukos Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Oct 5, 2026	Tomas Navratil	CHIEF DEVELOPMENT OFFICER	SELL	1.527K	$164.45	$251K
Sep 25, 2026	Tomas Navratil	CHIEF DEVELOPMENT OFFICER	SELL	1.615K	$154.28	$249K
Sep 16, 2026	Tomas Navratil	CHIEF DEVELOPMENT OFFICER	SELL	1.457K	$166.92	$243K
Aug 28, 2026	Tomas Navratil	CHIEF DEVELOPMENT OFFICER	SELL	13.744K	$180.67	$2.5M
Aug 19, 2026	Gilbert Kliman	—	SELL-OPTIONS	—	$107.89	$411K
Aug 11, 2026	Joseph Gilliam	PRESIDENT & COO	SELL-OPTIONS	—	$116.34	$7.6M
Aug 7, 2026	Alex Thurman	SVP & CHIEF FINANCIAL OFFICER	SELL-OPTIONS	—	$106.97	$2.9M
Jul 31, 2026	LEANA WEN	—	SELL	525.000	$167.63	$88K
Jul 16, 2026	Alex Thurman	SVP & CHIEF FINANCIAL OFFICER	SELL-OPTIONS	—	$99.34	$1.2M
Jul 9, 2026	Alex Thurman	SVP & CHIEF FINANCIAL OFFICER	SELL-OPTIONS	—	$96.84	$1.2M
Jul 6, 2026	Alex Thurman	SVP & CHIEF FINANCIAL OFFICER	SELL-OPTIONS	—	$94.34	$1.1M
Jul 1, 2026	Tomas Navratil	CHIEF DEVELOPMENT OFFICER	SELL	716.000	$139.06	$100K
Jun 16, 2026	Tomas Navratil	CHIEF DEVELOPMENT OFFICER	SELL	1.537K	$130.68	$201K
May 14, 2026	Gilbert Kliman	—	SELL-OPTIONS	—	$82.72	$580K
May 11, 2026	Gilbert Kliman	—	SELL-OPTIONS	—	$79.84	$552K
May 1, 2026	Joseph Gilliam	PRESIDENT & COO	SELL	19.573K	$143.54	$2.8M
May 1, 2026	LEANA WEN	—	SELL	1.700K	$143.35	$244K
Apr 30, 2026	Alex Thurman	SVP & CHIEF FINANCIAL OFFICER	SELL-OPTIONS	—	$89.34	$1.0M