Form 4 Filing for Eton Pharmaceuticals, Inc. - Officer Stock Transactions

This filing details stock transactions by David Krempa, Chief Business Officer of Eton Pharmaceuticals, Inc. On May 22, 2026, Krempa acquired 30,591 shares of Common Stock at $3.58 per share and disposed of 32,963 shares at a weighted average of $33.2208, 9,315 shares at $33.8802, and 519 shares at $35.00. Additionally, he exercised options for 30,591 shares. On May 26, 2026, Krempa acquired 25,000 shares at $1.38 and 12,524 shares at $1.37, while disposing of 37,524 shares at a weighted average of $31.4927. He also exercised options for 25,000 and 12,524 shares. On May 27, 2026, Krempa acquired 12,476 shares at $1.37 and 7,203 shares at $3.58, disposing of 19,679 shares at a weighted average of $31.4739. He exercised options for 12,476 and 7,203 shares. The filing also notes that options vest over time, with some options vesting over 48 months and others vesting annually in four installments.