Form 4: Glaukos CFO Sells Shares Under 10b5-1 Plan

Glaukos Corporation's SVP and CFO, Alex R. Thurman, reported sales of common stock, including shares withheld for tax obligations and sales under a pre-arranged 10b5-1 trading plan.

Summary

• Alex R. Thurman, SVP & Chief Financial Officer of Glaukos Corp, reported transactions involving the company's common stock.
• On March 16, 2026, 614 shares were disposed of at $98.94 per share to cover tax withholding obligations related to the vesting of restricted stock units granted on March 14, 2024.
• On March 17, 2026, an additional 625 shares were sold at $99.15 per share.
• These sales were executed under a Rule 10b5-1 trading plan adopted by Mr. Thurman on December 15, 2025.
• Following these transactions, Mr. Thurman beneficially owns 49,249 shares of common stock, which includes 12,512 unvested restricted stock units and 167 shares from the Employee Stock Purchase Plan.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event, as the transactions are routine for executive compensation and personal financial planning, executed under a pre-established 10b5-1 plan and for tax obligations.

Positives

• The sales were conducted under a Rule 10b5-1 trading plan, indicating pre-planned transactions rather than reactive selling.

Negatives

• A reduction in direct beneficial ownership by a key executive, though a small percentage of total holdings.

Industry Context

StockSavvy.ai notes that insider transactions, particularly those executed under Rule 10b5-1 plans, are common practice for executives to manage their equity holdings and liquidity while adhering to insider trading regulations. Glaukos operates in the medical technology sector, where executive compensation often includes significant equity components.

Comparison to Industry Standards

• Insider sales for tax purposes and under pre-arranged 10b5-1 plans are standard practice across publicly traded companies, especially in the medical device and biotechnology sectors where executive compensation frequently includes substantial equity grants.
• These types of transactions are generally not indicative of a change in management's outlook on the company's prospects, unlike open market sales without a pre-existing plan.

Stakeholder Impact

• Shareholders: Minimal direct impact as these are routine insider transactions, often pre-planned.
• Employees: No direct impact mentioned.
• Customers: No direct impact mentioned.
• Suppliers: No direct impact mentioned.
• Creditors: No direct impact mentioned.

Key Dates

Recommendation

The reported transactions are routine insider sales for tax purposes and under a pre-established 10b5-1 trading plan. They do not signal a change in the company's fundamentals or management's long-term view, thus a 'hold' recommendation is appropriate based solely on this filing.

Keywords

Glaukos Corp, GKOS, SEC Form 4, Insider Trading, Alex R. Thurman, CFO, Stock Sale, 10b5-1 Plan, Restricted Stock Units, Employee Stock Purchase Plan, Tax Withholding