Airbnb, Inc.: 10% owner Nathan Blecharczyk sold 13,615 shares

What happened

• Nathan Blecharczyk, a 10% owner, sold 13,615 shares in open-market transactions on Oct 12, 2026, generating $2,248,980 in reported proceeds. The sales were reported at weighted-average prices: $163.45 (2,852 shares, $466,151), $164.72 (4,267 shares, $702,872), $165.44 (2,248 shares, $371,910), $166.52 (3,248 shares, $540,862) and $167.19 (1,000 shares, $167,185).
• The filing also reports a gift of 4,077 shares (disposed for $0) and conversion transactions of 17,692 shares of derivative securities (Class B common stock convertible into Class A common stock) reported as both acquired and disposed at $0.

Key details

• Transaction date: Oct 12, 2026. Filing date: Oct 14, 2026.
• Prices and proceeds: total open-market sale proceeds $2,248,980; individual weighted-average prices and proceeds listed above. Gift reported at $0.
• Conversion: 17,692 shares converted (see footnote F1 — Class B converts one-for-one into Class A under specified conditions).
• 10b5-1 plan: the gift and sales were effected under a Rule 10b5-1 trading plan adopted Aug 28, 2025 (footnote F2).
• Price ranges: the filing gives weighted-average prices and ranges for the sale blocks (footnotes F3–F7) and offers to provide breakdowns on request.
• Shares owned after the transactions: not reported in the supplied filing data.
• Filing timeliness: the Form 4 was filed on Oct 14, 2026 for transactions on Oct 12, 2026; the filing does not indicate lateness.

Why it may matter

• Conversion: the filing shows conversion of Class B common stock into Class A common stock on a one-for-one basis (footnote F1).
• Gift: the 4,077-share gift is a nonmarket disposition (not an open-market sale).
• 10% owner: the reporting person is a 10% owner (a large holder) rather than described as an executive in the filing.
• The filing does not show why the insider traded or why the company acted.