Rallybio Corp: CEO Stephen Uden exercised 22,456 shares

What happened Stephen Uden, chief executive officer, exercised options to acquire 22,456 shares at $6.08 per share for $136,532 on Oct 6, 2026. The Form 4 also shows a corresponding disposition entry for 22,456 derivative units at $0.00 (derivative).

Key details

• Transaction date and price: Oct 6, 2026; exercised 22,456 shares at $6.08 per share for $136,532 (transaction code M).
• Derivative entry: 22,456 derivative units disposed at $0.00 (derivative).
• Shares owned after the transaction: the filing does not report shares owned after the transaction.
• Footnote F1: the option was granted under the company's 2021 Equity Incentive Plan and vests in 48 equal monthly installments until fully vested on Feb 14, 2029.
• Form 4 filing date: Oct 8, 2026 (as reported in the filing).

Why it may matter

• The filing shows exercised options. The filing does not show whether the shares were sold immediately (cashless exercise) or retained.
• The filing does not show why the insider traded or why the company acted.