Airbnb Co-Founder Nathan Blecharczyk Executes Significant Stock Sales Under Rule 10b5-1 Plan

This Form 4 filing reports that Nathan Blecharczyk, Airbnb's Chief Strategy Officer, co-founder, director, and 10% owner, executed significant stock sales totaling approximately $6.3 million through a pre-planned Rule 10b5-1 trading arrangement. The transactions involved conversion of Class B shares to Class A shares followed by sales at weighted average prices between $145.48-$146.24 per share. The sales occurred on May 8 and May 11, 2026, with Blecharczyk selling 60,763 shares total while maintaining substantial ownership of over 45.9 million Class B shares (convertible to Class A) and direct ownership of 88,454 Class A shares. All transactions were conducted pursuant to a Rule 10b5-1 trading plan adopted on August 28, 2025, which provides legal protection against insider trading allegations by establishing predetermined trading parameters.