Form 4: GLAUKOS COO Sells Shares
Insider Transaction (Form 4)
Joseph E Gilliam, PRESIDENT & COO of GLAUKOS Corp, sold 60,000 shares of common stock on August 11, 2026.
Summary
- Option exercise/conversion: acquired 10,000 Common Stock at $48.46 ($484,600) on August 11, 2026; holds 82,588 after (Direct).
- Option exercise/conversion: acquired 20,000 Common Stock at $55.18 ($1,103,600) on August 11, 2026; holds 102,588 after (Direct).
- Option exercise/conversion: acquired 20,000 Common Stock at $55.18 ($1,103,600) on August 11, 2026; holds 122,588 after (Direct).
- Option exercise/conversion: acquired 10,000 Common Stock at $48.46 ($484,600) on August 11, 2026; holds 132,588 after (Direct).
- Open-market sale: disposed of 27,963 Common Stock at $178.89 ($5,002,301) on August 11, 2026; holds 104,625 after (Direct).
- Open-market sale: disposed of 32,037 Common Stock at $180.49 ($5,782,358) on August 11, 2026; holds 72,588 after (Direct).
- Option exercise/conversion: disposed of 20,000 Stock Option (Right to Buy) on August 11, 2026; holds 51,475 after (Direct).
- Option exercise/conversion: disposed of 20,000 Stock Option (Right to Buy) on August 11, 2026; holds 33,118 after (Direct).
- Option exercise/conversion: disposed of 10,000 Stock Option (Right to Buy) on August 11, 2026; holds 26,751 after (Direct).
- Option exercise/conversion: disposed of 10,000 Stock Option (Right to Buy) on August 11, 2026; holds 26,751 after (Direct).
Sentiment
Score: 2
Explanation: StockSavvy.ai views this as a mildly negative signal: an insider sold $10,784,659 of stock on the open market.
Insider Transactions
Joseph E Gilliam — Officer (PRESIDENT & COO)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-11 | Option exercise/conversion | Common Stock | 10,000 | $48 | $484.6K | 82,588 |
| 2026-08-11 | Option exercise/conversion | Common Stock | 20,000 | $55 | $1.1M | 102,588 |
| 2026-08-11 | Option exercise/conversion | Common Stock | 20,000 | $55 | $1.1M | 122,588 |
| 2026-08-11 | Option exercise/conversion | Common Stock | 10,000 | $48 | $484.6K | 132,588 |
| 2026-08-11 | Open-market sale | Common Stock | 27,963 | $179 | $5.0M | 104,625 |
| 2026-08-11 | Open-market sale | Common Stock | 32,037 | $180 | $5.8M | 72,588 |
| 2026-08-11 | Option exercise/conversion | Stock Option (Right to Buy) | 20,000 | — | — | 51,475 |
| 2026-08-11 | Option exercise/conversion | Stock Option (Right to Buy) | 20,000 | — | — | 33,118 |
| 2026-08-11 | Option exercise/conversion | Stock Option (Right to Buy) | 10,000 | — | — | 26,751 |
| 2026-08-11 | Option exercise/conversion | Stock Option (Right to Buy) | 10,000 | — | — | 26,751 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-11 | Option exercise/conversion (10,000 shares) |
| 2026-08-11 | Option exercise/conversion (20,000 shares) |
| 2026-08-11 | Option exercise/conversion (20,000 shares) |
| 2026-08-11 | Option exercise/conversion (10,000 shares) |
| 2026-08-11 | Open-market sale (27,963 shares) |
| 2026-08-11 | Open-market sale (32,037 shares) |
| 2026-08-11 | Option exercise/conversion (20,000 shares) |
| 2026-08-11 | Option exercise/conversion (20,000 shares) |
| 2026-08-11 | Option exercise/conversion (10,000 shares) |
| 2026-08-11 | Option exercise/conversion (10,000 shares) |
Keywords
insider transaction, Form 4, GKOS, GLAUKOS Corp, bearish, Joseph E Gilliam
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