Form 4: Erasca GC Sells Shares Post-Option Exercise

Erasca's General Counsel, Ebun Garner, exercised stock options and subsequently sold 120,000 shares of common stock, while also acquiring additional shares through an employee plan.

Summary

• Ebun Garner, General Counsel & Corporate Secretary of Erasca, Inc. (ERAS), reported multiple transactions involving the company's securities.
• On December 15, 2025, Garner acquired 3,902 shares of common stock at a price of $1.1943 per share through the Issuer's 2021 Employee Stock Purchase Plan.
• On January 7, 2026, Garner exercised stock options to acquire 120,000 shares of common stock at an exercise price of $1.70 per share.
• Immediately following the option exercise on January 7, 2026, Garner sold all 120,000 acquired shares at a weighted-average price of $5.5901 per share.
• The sales were executed in multiple transactions with prices ranging from $5.50 to $5.80 per share.
• Both the option exercise and subsequent sale on January 7, 2026, were conducted pursuant to a Rule 10b5-1 trading plan adopted by Garner on June 30, 2024.
• Following these reported transactions, Garner directly beneficially owns 25,076 shares of common stock and 360,000 stock options.

Sentiment

Score: 5

Explanation: Neutral. The filing details routine insider activity under a 10b5-1 plan, involving both acquisition through an employee plan and a 'cash-out' of exercised options. While the sale of shares by an insider can sometimes be viewed negatively, the pre-planned nature mitigates this, and the insider still retains a significant number of options and some direct shares.

Positives

• The General Counsel realized a significant gain from exercising stock options at $1.70 and selling the shares at a weighted-average price of $5.5901.
• The transactions were executed under a pre-arranged Rule 10b5-1 trading plan, indicating planned activity rather than opportunistic trading based on non-public information.
• The acquisition of 3,902 shares through the Employee Stock Purchase Plan demonstrates continued participation in employee ownership programs.

Negatives

• A key insider, the General Counsel, sold a substantial number of shares (120,000) immediately after exercising options, which could be interpreted by some investors as a lack of confidence in the near-term stock price.
• The net beneficial ownership of common stock (excluding options) for the reporting person remained at 25,076 shares after the exercise and sale, indicating no net increase in direct shareholding from these specific events.

Future Outlook

NA

Industry Context

NA

Stakeholder Impact

• Shareholders: May note the insider sale, but the pre-arranged 10b5-1 plan suggests a planned liquidity event rather than a signal of changing company fundamentals. The insider retains significant option holdings.
• Employees: The acquisition of shares through the Employee Stock Purchase Plan highlights the availability and utilization of standard employee benefit programs.

Key Dates

Recommendation

The filing details routine insider transactions under a Rule 10b5-1 plan, which included an option exercise and subsequent sale, alongside an ESPP purchase. While the sale of shares by an insider might typically raise concerns, the pre-scheduled nature of the transaction mitigates any immediate negative signal. The General Counsel still retains a substantial number of unexercised options, suggesting continued alignment with long-term company performance. These transactions do not provide new fundamental information to warrant a change in investment thesis, thus a 'hold' recommendation is appropriate.

Keywords

Erasca, ERAS, Form 4, Insider Trading, Stock Option Exercise, Share Sale, Ebun Garner, Rule 10b5-1, Employee Stock Purchase Plan, Corporate Secretary, General Counsel