Insider Transactions Reported by 13 Insiders of GLAUKOS Corp

Symbol: GKOS on NYSE
Location: Aliso Viejo, CA

Quick Takeaways

GKOS - GLAUKOS Corp has 13 insiders with reported activity on this page.
Net insider value flow over the last year: -$45,299,895.
Recent transaction rows are available for direct filing-level review.

What Changed

Buy value: ; sell value: $45,299,895.
Net share flow: -389,368.

Why This Matters

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Source Evidence

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Net insider flow leans to selling over the last 12 months. Net value: -$45,299,895.

Buys

Shares: 0

Insiders: 0

Sells

$45,299,895

Shares: 389,368

Insiders: 8

Net

-$45,299,895

Shares: -389,368

Insiders: -8

Window (months)	Sell shares	Buy $	Sell $	Net $
0-3	54,054	$0	$7,050,578	-$7,050,578
3-6	329,655	$0	$37,752,155	-$37,752,155
6-9	5,659	$0	$497,161	-$497,161
9-12	0	$0	$0	$0

GLAUKOS Corp executives and other stock owners filed with the SEC include:

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
Thomas W. Burns	CHAIRMAN & CEO, Director	$201,828,760	-$31,625,000	-14%	Mixed	02 Apr 2026
Chris M. Calcaterra	Chief Operating Officer	$17,854,811			Mixed	24 Mar 2022
Joseph E. Gilliam	President & Coo	$12,233,306	-$6,451,663	-35%	Mixed	01 May 2026
Tomas Navratil	Chief Development Officer	$10,865,185	-$844,415	-7.2%	Filing P/S	10 Apr 2026
David F. Hoffmeister	Director	$8,298,085			Mixed	02 Jan 2026
Alex R. Thurman	Svp & Chief Financial Officer	$7,490,876	-$1,922,435	-20%	Mixed	30 Apr 2026
Mark J. Foley	Director	$6,592,707			Mixed	02 Jan 2026
William J. Link PhD	Director	$5,480,783			Mixed	03 Jun 2021
Aimee S. Weisner	Director	$5,310,846	-$1,760,761	-25%	Mixed	19 Feb 2026
Marc Stapley	Director	$4,860,131	-$1,915,576	-28%	Filing P/S	22 Jan 2026
Gilbert H. Kliman	Director	$4,258,370	-$536,350	-11%	Mixed	02 Jan 2026
Leana Wen	Director	$2,915,933	-$243,695	-7.7%	Mixed	01 May 2026
Denice Torres	Director	$2,608,082			Mixed	02 Jan 2026

Top shareholders of GLAUKOS Corp (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
BlackRock, Inc.	13F 13D/G	Company	14% from 13D/G	9,164,538	$1,034,767,984	—	31 Dec 2025	13F 13D/G
VANGUARD GROUP INC	13F	Company	10%	6,020,492	$679,773,752	—	31 Dec 2025	13F
PRIMECAP MANAGEMENT CO/CA/	13F 13D/G	Company	5.9% from 13D/G	3,376,928	$381,288,942	—	31 Dec 2025	13F 13D/G
VANGUARD PORTFOLIO MANAGEMENT LLC	13D/G	Vanguard Portfolio Management	5.6%	3,256,962	$350,644,529	$0	31 Mar 2026	13D/G
JANUS HENDERSON GROUP PLC	13F 13D/G	Company	5.3% from 13D/G	3,018,787	$340,854,975	—	31 Dec 2025	13F 13D/G
VANGUARD CAPITAL MANAGEMENT LLC	13D/G	Vanguard Capital Management	5.1%	2,947,047	$317,279,080	$0	31 Mar 2026	13D/G
FMR LLC	13D/G 13F	Company	4.5%	2,561,428	$262,367,116	-$360,259,421	31 Jul 2025	13D/G 13F
STATE STREET CORP	13F	Company	3.7%	2,122,402	$239,640,410	—	31 Dec 2025	13F
Thomas W. Burns	13D/G 3/4/5	CHAIRMAN & CEO, Director	4.4%	2,553,695	$239,613,202	$0	31 Dec 2024	13D/G 3/4/5
AMERIPRISE FINANCIAL INC	13F	Company	3.6%	2,104,294	$237,595,989	—	31 Dec 2025	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	2.8%	1,643,448	$185,561,714	—	31 Dec 2025	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	2.8%	1,609,699	$181,751,114	—	31 Dec 2025	13F
GOLDMAN SACHS GROUP INC	13F	Company	2.3%	1,350,425	$152,476,487	—	31 Dec 2025	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	2.3%	1,317,648	$148,799,552	—	31 Dec 2025	13F
Holocene Advisors, LP	13F	Company	2.2%	1,299,294	$146,703,286	—	31 Dec 2025	13F
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	13F	Company	1.9%	1,106,918	$124,982,111	—	31 Dec 2025	13F
BRAIDWELL LP	13F	Company	1.6%	921,979	$104,100,649	—	31 Dec 2025	13F
UBS Group AG	13F	Company	1.5%	873,942	$98,676,791	—	31 Dec 2025	13F
Capital World Investors	13F	Company	1.5%	850,893	$96,074,329	—	31 Dec 2025	13F
Invesco Ltd.	13F	Company	1.3%	780,267	$88,099,946	—	31 Dec 2025	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	1.2%	714,026	$80,620,676	—	31 Dec 2025	13F
Artisan Partners Limited Partnership	13F	Company	1.2%	702,818	$79,355,180	—	31 Dec 2025	13F
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	13F	Company	1.2%	672,958	$75,984,000	—	31 Dec 2025	13F
MORGAN STANLEY	13F	Company	1.2%	670,778	$75,737,821	—	31 Dec 2025	13F
NORTHERN TRUST CORP	13F	Company	1%	587,130	$66,292,849	—	31 Dec 2025	13F
D. E. Shaw & Co., Inc.	13F	Company	0.96%	558,290	$63,036,524	—	31 Dec 2025	13F
JPMORGAN CHASE & CO	13F	Company	0.96%	556,479	$62,832,110	—	31 Dec 2025	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.93%	538,678	$60,822,133	—	31 Dec 2025	13F
NORGES BANK	13F	Company	0.92%	536,143	$60,535,906	—	31 Dec 2025	13F
RIVERBRIDGE PARTNERS LLC	13F	Company	0.92%	535,169	$60,425,960	—	31 Dec 2025	13F
Capital International Investors	13F	Company	0.88%	511,510	$57,754,594	—	31 Dec 2025	13F
WELLINGTON MANAGEMENT GROUP LLP	13D/G 13F	Company	0.8%	486,824	$54,967,298	-$311,358,358	31 Dec 2025	13D/G 13F
AustralianSuper Pty Ltd	13F	Company	0.77%	449,846	$50,792,112	—	31 Dec 2025	13F
LOOMIS SAYLES & CO L P	13F	Company	0.77%	447,805	$50,561,663	—	31 Dec 2025	13F
Nuveen, LLC	13F	Company	0.7%	406,046	$45,846,654	—	31 Dec 2025	13F
Bank of New York Mellon Corp	13F	Company	0.61%	355,840	$40,177,936	—	31 Dec 2025	13F
Allspring Global Investments Holdings, LLC	13F	Company	0.61%	355,279	$39,336,491	—	31 Dec 2025	13F
Champlain Investment Partners, LLC	13F	Company	0.57%	333,264	$37,628,838	—	31 Dec 2025	13F
BROWN CAPITAL MANAGEMENT LLC	13F	Company	0.56%	326,579	$36,874,035	—	31 Dec 2025	13F
FRED ALGER MANAGEMENT, LLC	13F	Company	0.56%	325,540	$36,756,721	—	31 Dec 2025	13F
Integral Health Asset Management, LLC	13F	Company	0.56%	325,000	$36,695,750	—	31 Dec 2025	13F
EVENTIDE ASSET MANAGEMENT, LLC	13F	Company	0.5%	289,275	$32,662,040	—	31 Dec 2025	13F
Sofinnova Investments, Inc.	13F	Company	0.5%	288,128	$32,532,532	—	31 Dec 2025	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.47%	274,565	$31,001,134	—	31 Dec 2025	13F
Bellevue Group AG	13F	Company	0.45%	261,935	$29,575,081	—	31 Dec 2025	13F
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	0.43%	250,000	$28,227,500	—	31 Dec 2025	13F
Rhenman & Partners Asset Management AB	13F	Company	0.36%	210,000	$23,711,100	—	31 Dec 2025	13F
C WorldWide Group Holding A/S	13F	Company	0.36%	207,212	$23,396,000	—	31 Dec 2025	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	0.35%	205,461	$23,202,112	—	31 Dec 2025	13F
PFM Health Sciences, LP	13F	Company	0.35%	201,676	$22,771,237	—	31 Dec 2025	13F

Recent Insider Transactions by Companies or Individuals for GLAUKOS Corp

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership
Joseph E. Gilliam	GKOS	Common Stock	Sale	-21%	$2,809,508	$143.54	-19,573	73,419	01 May 2026	Direct
Leana Wen	GKOS	Common Stock	Sale	-7.93%	$243,695	$143.35	-1,700	19,739	01 May 2026	Direct
Alex R. Thurman	GKOS	Common Stock	Sale	-18.6%	$1,400,000	$140.00	-10,000	43,681	30 Apr 2026	Direct
Alex R. Thurman	GKOS	Common Stock	Options Exercise	22.9%			10,000	53,681	30 Apr 2026	Direct
Alex R. Thurman	GKOS	Stock Option (Right to Buy)	Options Exercise	-25%			-10,000	30,000	30 Apr 2026	Direct
Tomas Navratil	GKOS	Common Stock	Sale	-2.26%	$246,175	$117.62	-2,093	90,370	10 Apr 2026	Direct
Tomas Navratil	GKOS	Common Stock	Tax liability	-3.12%			-2,977	92,463	02 Apr 2026	Direct
Alex R. Thurman	GKOS	Common Stock	Tax liability	-3.51%			-1,589	43,681	02 Apr 2026	Direct
Joseph E. Gilliam	GKOS	Common Stock	Tax liability	-3.3%			-3,169	92,992	02 Apr 2026	Direct
Thomas William Burns	GKOS	Common Stock	Tax liability	-12%			-9,937	73,026	02 Apr 2026	Direct
Thomas William Burns	GKOS	Common Stock	Gift	18.8%			180,308	1,141,593	01 Apr 2026	Through the Burns Family Trust
Thomas William Burns	GKOS	Common Stock	Gift	-68.5%			-180,308	82,963	01 Apr 2026	Direct
Tomas Navratil	GKOS	Common Stock	Tax liability	-5.73%			-5,798	95,440	31 Mar 2026	Direct
Thomas William Burns	GKOS	Common Stock	Award	9.83%			23,564	263,271	25 Mar 2026	Direct
Thomas William Burns	GKOS	Stock Option (Right to Buy)	Award				227,661	110,254	25 Mar 2026	Direct
Alex R. Thurman	GKOS	Common Stock	Award	7.87%			3,303	45,270	25 Mar 2026	Direct
Alex R. Thurman	GKOS	Common Stock	Sale	-5.65%	$267,321	$106.46	-2,511	41,967	25 Mar 2026	Direct
Alex R. Thurman	GKOS	Stock Option (Right to Buy)	Award	169.1%			28,743	45,738	25 Mar 2026	Direct
Joseph E. Gilliam	GKOS	Common Stock	Award	32.6%			23,621	96,161	25 Mar 2026	Direct
Joseph E. Gilliam	GKOS	Stock Option (Right to Buy)	Award				75,168	71,475	25 Mar 2026	Direct
Tomas Navratil	GKOS	Common Stock	Award	47.9%			32,781	101,238	25 Mar 2026	Direct
Thomas William Burns	GKOS	Common Stock	Tax liability	-1.13%			-2,744	239,707	24 Mar 2026	Direct
Tomas Navratil	GKOS	Common Stock	Tax liability	-3.59%			-2,546	68,457	24 Mar 2026	Direct
Alex R. Thurman	GKOS	Common Stock	Tax liability	-4.34%			-2,020	44,478	24 Mar 2026	Direct
Alex R. Thurman	GKOS	Common Stock	Sale	-3.17%	$160,070	$105.24	-1,521	46,498	24 Mar 2026	Direct
Joseph E. Gilliam	GKOS	Common Stock	Tax liability	-14.5%			-12,314	72,540	24 Mar 2026	Direct
Tomas Navratil	GKOS	Common Stock	Tax liability	-3.57%			-2,628	71,003	23 Mar 2026	Direct
Alex R. Thurman	GKOS	Common Stock	Tax liability	-2.5%			-1,230	48,019	23 Mar 2026	Direct
Joseph E. Gilliam	GKOS	Common Stock	Tax liability	-3.2%			-2,804	84,854	23 Mar 2026	Direct
Alex R. Thurman	GKOS	Common Stock	Sale	-1.25%	$61,969	$99.15	-625	49,249	17 Mar 2026	Direct
Tomas Navratil	GKOS	Common Stock	Sale	-1.38%	$101,078	$98.04	-1,031	73,631	16 Mar 2026	Direct
Tomas Navratil	GKOS	Common Stock	Tax liability	-1.27%			-958	74,662	16 Mar 2026	Direct
Alex R. Thurman	GKOS	Common Stock	Tax liability	-1.22%			-614	49,874	16 Mar 2026	Direct
Joseph E. Gilliam	GKOS	Common Stock	Tax liability	-1.34%			-1,189	87,658	16 Mar 2026	Direct
Thomas William Burns	GKOS	Common Stock	Tax liability	-1.14%			-2,801	242,451	16 Mar 2026	Direct
Joseph E. Gilliam	GKOS	Common Stock	Tax liability	-2.7%			-2,462	88,847	13 Mar 2026	Direct
Tomas Navratil	GKOS	Common Stock	Tax liability	-1.4%			-1,074	75,620	13 Mar 2026	Direct
Thomas William Burns	GKOS	Common Stock	Tax liability	-2.08%			-5,212	245,252	13 Mar 2026	Direct
Tomas Navratil	GKOS	Common Stock	Tax liability	-0.47%			-361	76,694	05 Mar 2026	Direct
Thomas William Burns	GKOS	Common Stock	Tax liability	-0.44%			-1,098	250,464	05 Mar 2026	Direct
Thomas William Burns	GKOS	Common Stock	Tax liability	-1.59%			-4,059	251,562	24 Feb 2026	Direct
Tomas Navratil	GKOS	Common Stock	Tax liability	-0.51%			-396	77,055	24 Feb 2026	Direct
Joseph E. Gilliam	GKOS	Common Stock	Tax liability	-1.14%			-1,057	91,309	24 Feb 2026	Direct
Aimee S. Weisner	GKOS	Common Stock	Sale	-44.4%	$1,760,761	$117.38	-15,000	18,806	19 Feb 2026	Direct
Aimee S. Weisner	GKOS	Common Stock	Options Exercise	79.8%			15,000	33,806	19 Feb 2026	Direct
Aimee S. Weisner	GKOS	Common Stock	Gift	3.44%			980	29,505	19 Feb 2026	Through the Saeman-Weisner Family Trust
Aimee S. Weisner	GKOS	Common Stock	Gift	-4.95%			-980	18,806	19 Feb 2026	Direct
Aimee S. Weisner	GKOS	Stock Option (Right to Buy)	Options Exercise	-100%			-15,000	0	19 Feb 2026	Direct
Thomas William Burns	GKOS	Common Stock	Options Exercise	185.2%			166,000	255,621	09 Feb 2026	Direct
Thomas William Burns	GKOS	Stock Option (Right to Buy)	Options Exercise	-62.4%			-166,000	100,000	09 Feb 2026	Direct

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