Insider trading · Q3 2026 · CIK 1192448

GLAUKOS Corp (GKOS) insider trading.

Name: GLAUKOS Corp insider transactions, Q3 2026
Creator: U.S. Securities and Exchange Commission

In Q3 2026, insiders at GLAUKOS Corp reported 32 non-derivative transactions on 11 Forms 3, 4 and 5: 0 open-market purchases and 23 sales worth $22.7M.

Transactions: 32
Purchases (P): 0
Sales (S): 23
Net shares, P minus S: -130,557
Insiders: 5
Last filed: 2026-09-28

Insiders

Insider	Relationship	Transactions	Sales
Navratil Tomas	Officer · CHIEF DEVELOPMENT OFFICER	15	15
Thurman Alex R.	Officer · SVP & CHIEF FINANCIAL OFFICER	8	4
Gilliam Joseph E	Officer · PRESIDENT & COO	6	2
Kliman Gilbert H	Director	2	1
Wen Leana	Director	1	1

Transactions

32 non-derivative rows, newest transaction first. Shares and prices as filed.
Date	Insider	Code	Shares	Price	Owned after	Filing
2026-09-25	Navratil Tomas	S (D)	167	$151.7	72,266	Form 4
2026-09-25	Navratil Tomas	S (D)	136	$152.71	72,130	Form 4
2026-09-25	Navratil Tomas	S (D)	229	$154.24	71,901	Form 4
2026-09-25	Navratil Tomas	S (D)	1,083	$154.88	70,818	Form 4
2026-09-16	Navratil Tomas	S (D)	103	$163.2	73,787	Form 4
2026-09-16	Navratil Tomas	S (D)	345	$164.6	73,442	Form 4
2026-09-16	Navratil Tomas	S (D)	191	$166.2	73,251	Form 4
2026-09-16	Navratil Tomas	S (D)	4	$172	72,433	Form 4
2026-09-16	Navratil Tomas	S (D)	120	$168.38	72,671	Form 4
2026-09-16	Navratil Tomas	S (D)	234	$170.95	72,437	Form 4
2026-09-16	Navratil Tomas	S (D)	460	$167.32	72,791	Form 4
2026-08-28	Navratil Tomas	S (D)	6,091	$181.19	73,900	Form 4
2026-08-28	Navratil Tomas	S (D)	10	$182.5	73,890	Form 4
2026-08-28	Navratil Tomas	S (D)	7,643	$180.25	79,991	Form 4
2026-08-19	Kliman Gilbert H	M (A)	2,500	$25.77	39,906	Form 4
2026-08-19	Kliman Gilbert H	S (D)	2,500	$190	37,406	Form 4
2026-08-11	Gilliam Joseph E	S (D)	32,037	$180.49	72,588	Form 4
2026-08-11	Gilliam Joseph E	M (A)	10,000	$48.46	82,588	Form 4
2026-08-11	Gilliam Joseph E	M (A)	20,000	$55.18	102,588	Form 4
2026-08-11	Gilliam Joseph E	S (D)	27,963	$178.89	104,625	Form 4
2026-08-11	Gilliam Joseph E	M (A)	20,000	$55.18	122,588	Form 4
2026-08-11	Gilliam Joseph E	M (A)	10,000	$48.46	132,588	Form 4
2026-08-07	Thurman Alex R.	S (D)	20,000	$180.13	43,906	Form 4
2026-08-07	Thurman Alex R.	M (A)	20,000	$33.81	63,906	Form 4
2026-07-31	Wen Leana	S (D)	525	$167.63	21,092	Form 4
2026-07-16	Thurman Alex R.	M (A)	10,000	$38.68	53,906	Form 4
2026-07-16	Thurman Alex R.	S (D)	10,000	$160	43,906	Form 4
2026-07-09	Thurman Alex R.	S (D)	10,000	$155	43,681	Form 4
2026-07-09	Thurman Alex R.	M (A)	10,000	$38.68	53,681	Form 4
2026-07-06	Thurman Alex R.	S (D)	10,000	$150	43,681	Form 4
2026-07-06	Thurman Alex R.	M (A)	10,000	$38.68	53,681	Form 4
2026-07-01	Navratil Tomas	S (D)	716	$139.06	87,634	Form 4

Transaction codes in this quarter

S: 23 M: 9

Get GKOS insider transactions through the API

Request with your API key

curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=1192448&limit=100" \
  -H "Authorization: Bearer $SEC_API_KEY"

Insider trading API guide · GKOS company page · GLAUKOS Corp on SEC.gov

Questions

Are insiders buying or selling GLAUKOS Corp (GKOS)?

In Q3 2026, insiders at GLAUKOS Corp reported 32 non-derivative transactions on 11 Forms 3, 4 and 5: 0 open-market purchases and 23 sales worth $22.7M. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.

Where do these GLAUKOS Corp insider trades come from?

From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.

Source: SEC Insider Transactions Data Sets, Q3 2026, retrieved 2026-10-27. Footnotes, derivative holdings and amendments are in the linked filings. Not investment advice.

Plain-text version for agents and LLMs: /insider-trading/gkos.md

Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.