GLAUKOS Corp (GKOS)
$179.87-$2.04 (-1.12%) Today
Glaukos Corp is an ophthalmic pharmaceutical and medical technology company focused on developing novel, dropless therapies and commercializing associated products for the treatment of glaucoma, corneal disorders, and retinal diseases. It has commenced commercialization activities for iDose TR, a first-of-its-kind, long-duration, intracameral procedural pharmaceutical implant designed to continuously deliver glaucoma drug therapy inside the eye for extended periods of time. The company also offer commercially a proprietary bio-activated pharmaceutical therapy for the treatment of a rare corneal disorder, keratoconus. The company has three primary commercialized micro-scale surgical device products designed to treat glaucoma: the iStent, the iStent inject W, and the iStent infinite.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 10 | 115,278 | $19.90M |
| Grant or award | 21 | 54,964 | |
| Option exercise | 18 | 225,000 | |
| Tax withholding / forfeiture | 3 | 5,598 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
105 Form 4 filings on record, the earliest from Oct 16, 2024, newest first. Filing history page 1 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Gilbert H. Kliman - Director | Option exercise | Common Stock | 2,500 | $25.77 | $64K | |
| Gilbert H. Kliman - Director | Open-market sale | Common Stock | 2,500 | $190.00 | $475K | |
| Gilbert H. Kliman - Director | Option exercise | Stock Option (Right to Buy) | 2,500 | $0.00 | - | |
| Joseph E. Gilliam - Officer | Option exercise | Common Stock | 10,000 | $48.46 | $485K | |
| Joseph E. Gilliam - Officer | Option exercise | Common Stock | 20,000 | $55.18 | $1.10M | |
| Joseph E. Gilliam - Officer | Option exercise | Common Stock | 20,000 | $55.18 | $1.10M | |
| Joseph E. Gilliam - Officer | Option exercise | Common Stock | 10,000 | $48.46 | $485K | |
| Joseph E. Gilliam - Officer | Open-market sale | Common Stock | 27,963 | $178.89 | $5.00M | |
| Joseph E. Gilliam - Officer | Open-market sale | Common Stock | 32,037 | $180.49 | $5.78M | |
| Joseph E. Gilliam - Officer | Option exercise | Stock Option (Right to Buy) | 20,000 | $0.00 | - | |
| Joseph E. Gilliam - Officer | Option exercise | Stock Option (Right to Buy) | 20,000 | $0.00 | - | |
| Joseph E. Gilliam - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | - | |
| Joseph E. Gilliam - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | - | |
| Alex R. Thurman - Officer | Option exercise | Common Stock | 20,000 | $33.81 | $676K | |
| Alex R. Thurman - Officer | Open-market sale | Common Stock | 20,000 | $180.13 | $3.60M | |
| Alex R. Thurman - Officer | Option exercise | Stock Option (Right to Buy) | 20,000 | $0.00 | - | |
| Leana Wen - Director | Open-market sale | Common Stock | 525 | $167.63 | $88K | |
| Alex R. Thurman - Officer | Option exercise | Common Stock | 10,000 | $38.68 | $387K | |
| Alex R. Thurman - Officer | Open-market sale | Common Stock | 10,000 | $160.00 | $1.60M | |
| Alex R. Thurman - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | - | |
| Alex R. Thurman - Officer | Option exercise | Common Stock | 10,000 | $38.68 | $387K | |
| Alex R. Thurman - Officer | Open-market sale | Common Stock | 10,000 | $155.00 | $1.55M | |
| Alex R. Thurman - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | - | |
| Alex R. Thurman - Officer | Option exercise | Common Stock | 10,000 | $38.68 | $387K | |
| Alex R. Thurman - Officer | Open-market sale | Common Stock | 10,000 | $150.00 | $1.50M | |
| Alex R. Thurman - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $38.68 | $387K | |
 Tomas Navratil - Officer | Open-market sale | Common Stock | 716 | $139.06 | $100K | |
 Thomas William Burns - Officer | Tax withholding / forfeiture | Common Stock | 4,059 | $142.57 | $579K | |
| Joseph E. Gilliam - Officer | Tax withholding / forfeiture | Common Stock | 1,056 | $142.57 | $151K | |
| Tomas Navratil - Officer | Tax withholding / forfeiture | Common Stock | 483 | $142.57 | $69K | |
| Mark J. Foley | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| Leana Wen | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| Marc Stapley | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| Aimee S. Weisner | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| Gilbert H. Kliman | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| David F. Hoffmeister | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| Denice Torres | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| Tomas Navratil - Officer | Open-market sale | Common Stock | 1,537 | $130.68 | $201K | |
| Leana Wen | Grant or award | Common Stock | 1,878 | $0.00 | - | |
| Leana Wen | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| Aimee S. Weisner | Grant or award | Common Stock | 1,878 | $0.00 | - | |
| Aimee S. Weisner | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| Denice Torres | Grant or award | Common Stock | 1,878 | $0.00 | - | |
| Denice Torres | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| Mark J. Foley | Grant or award | Common Stock | 1,878 | $0.00 | - | |
| Mark J. Foley | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| David F. Hoffmeister | Grant or award | Common Stock | 1,878 | $0.00 | - | |
| David F. Hoffmeister | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| Gilbert H. Kliman | Grant or award | Common Stock | 1,878 | $0.00 | - | |
| Gilbert H. Kliman | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| Marc Stapley | Grant or award | Common Stock | 1,878 | $0.00 | - | |
| Marc Stapley | Grant or award | Stock Option (Right to Buy) | 2,987 | $0.00 | - | |
| David F. Hoffmeister | Option exercise | Common Stock | 15,000 | $24.69 | $370K | |
| David F. Hoffmeister | Option exercise | Stock Option (Right to Buy) | 15,000 | $24.69 | $370K | |
| Gilbert H. Kliman | Option exercise | Common Stock | 5,000 | $24.69 | $123K | |
| Gilbert H. Kliman | Open-market sale | Common Stock | 5,000 | $140.76 | $704K | |
| Gilbert H. Kliman | Option exercise | Stock Option (Right to Buy) | 5,000 | $24.69 | $123K | |
| Gilbert H. Kliman | Option exercise | Common Stock | 5,000 | $24.69 | $123K | |
| Gilbert H. Kliman | Open-market sale | Common Stock | 5,000 | $135.00 | $675K | |
| Gilbert H. Kliman | Option exercise | Stock Option (Right to Buy) | 5,000 | $24.69 | $123K | |
| Alex R. Thurman - Officer | Option exercise | Common Stock | 10,000 | $38.68 | $387K | |
| Alex R. Thurman - Officer | Open-market sale | Common Stock | 10,000 | $140.00 | $1.40M | |
| Alex R. Thurman - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $38.68 | $387K |
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Navratil Tomas | Officer | 13,744 | $2.48M | View on EDGAR | |
| Kliman Gilbert H | Director | 2,500 | $475K | View on EDGAR | |
| Gilliam Joseph E | Officer | 60,000 | $10.78M | View on EDGAR |
GLAUKOS Corp (GKOS) had 26 insider filings in the last 90 days, with the most recent on 2026-08-21. The full record for GKOS runs to 105 Form 4 filings, the earliest from 2024-10-16. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of GKOS were filed in the last 90 days.
10 insider sales of GKOS were filed in the last 90 days, totaling $19.90M.
This page tracks GKOS Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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