Boudreau Helen M 4

What Happened

• Helen M. Boudreau, a director of Rallybio Corp (RLYB), exercised stock options on July 6, 2026 to acquire 3,562 shares at an exercise price of $2.38 per share, for a total cash outlay of $8,478. The Form 4 also reports a corresponding derivative-item disposition of 3,562 securities at $0.00 (code M — option exercise/conversion).
• This transaction is an option exercise (an acquisition), not an open-market sale. The dollar value is modest ($8.5k), so it’s a small insider purchase rather than a large, market-moving trade.

Key Details

• Transaction date: July 6, 2026; Form 4 filed July 10, 2026 (appears late relative to the typical two-business-day reporting window).
• Primary line: Acquired 3,562 shares at $2.38 each = $8,478 (code M).
• Secondary line: Disposed/converted 3,562 derivative securities at $0.00 (code M) — reflects conversion/settlement related to the exercise.
• Shares owned after the transaction: not reported in the details provided on this Form 4.
• No 10b5-1 plan, tax-withholding, or other footnotes were provided in the supplied data.

Context

• For retail investors: an option exercise is the conversion of the right to buy stock into actual shares; it does not necessarily signal a buy or sell opinion by itself. The filing shows no open-market sale proceeds, so this appears to be a straightforward exercise/conversion rather than a cashless sale.
• The filing was submitted four days after the transaction date, which is outside the typical two-business-day window and is noted here for completeness. Late filings can occur for administrative reasons but reduce the immediacy of public disclosure.