Form 4: GLAUKOS Executive Sells Shares
Insider Transaction (Form 4)
Tomas Navratil, CHIEF DEVELOPMENT OFFICER of GLAUKOS Corp, sold 1,457 shares of common stock on September 16, 2026.
Summary
- Open-market sale: disposed of 103 Common Stock at $163.20 ($16,810) on September 16, 2026; holds 73,787 after (Direct).
- Open-market sale: disposed of 345 Common Stock at $164.60 ($56,787) on September 16, 2026; holds 73,442 after (Direct).
- Open-market sale: disposed of 191 Common Stock at $166.20 ($31,744) on September 16, 2026; holds 73,251 after (Direct).
- Open-market sale: disposed of 460 Common Stock at $167.32 ($76,967) on September 16, 2026; holds 72,791 after (Direct).
- Open-market sale: disposed of 120 Common Stock at $168.38 ($20,206) on September 16, 2026; holds 72,671 after (Direct).
- Open-market sale: disposed of 234 Common Stock at $170.95 ($40,002) on September 16, 2026; holds 72,437 after (Direct).
- Open-market sale: disposed of 4 Common Stock at $172.00 ($688) on September 16, 2026; holds 72,433 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $243,204 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Tomas Navratil — Officer (CHIEF DEVELOPMENT OFFICER)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-09-16 | Open-market sale | Common Stock | 103 | $163 | $16.8K | 73,787 |
| 2026-09-16 | Open-market sale | Common Stock | 345 | $165 | $56.8K | 73,442 |
| 2026-09-16 | Open-market sale | Common Stock | 191 | $166 | $31.7K | 73,251 |
| 2026-09-16 | Open-market sale | Common Stock | 460 | $167 | $77.0K | 72,791 |
| 2026-09-16 | Open-market sale | Common Stock | 120 | $168 | $20.2K | 72,671 |
| 2026-09-16 | Open-market sale | Common Stock | 234 | $171 | $40.0K | 72,437 |
| 2026-09-16 | Open-market sale | Common Stock | 4 | $172 | $688 | 72,433 |
Key Dates
| Date | Description |
|---|---|
| 2026-09-16 | Open-market sale (103 shares) |
| 2026-09-16 | Open-market sale (345 shares) |
| 2026-09-16 | Open-market sale (191 shares) |
| 2026-09-16 | Open-market sale (460 shares) |
| 2026-09-16 | Open-market sale (120 shares) |
| 2026-09-16 | Open-market sale (234 shares) |
| 2026-09-16 | Open-market sale (4 shares) |
Keywords
insider transaction, Form 4, GKOS, GLAUKOS Corp, bearish, Tomas Navratil
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