Form 4 Filing for Bicara Therapeutics Inc.

This filing details transactions made by Ivan Hyep, Chief Financial Officer of Bicara Therapeutics Inc. On December 22, 2025, Mr. Hyep acquired 9,200 shares of Common Stock under a Rule 10b5-1 trading plan at an average price of $3.7898 per share, increasing his post-transaction holdings to 154,555 shares. Concurrently, he disposed of 9,200 shares of Common Stock, also part of the trading plan, at a weighted average price of $18.3143 per share (ranging from $18.15 to $18.45), resulting in 145,355 shares remaining. Additionally, Mr. Hyep exercised a stock option, acquiring 9,200 shares of Common Stock at an exercise price of $3.7898 per share. The underlying options vest in sixteen equal quarterly installments starting from August 8, 2023, contingent upon continued service. Following these transactions, his post-transaction holdings of the underlying security for the option amount to 88,984 shares.