Rallybio Insider Trades
NASDAQ: RLYBHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Last 12 months
- Purchases
- 14 · $4.23M
- Sales
- 1 · $3.99K
- Shares bought / sold
- 302.47K / 789
- Net activity
- Net buying $4.2 million
Rallybio insider activity
Over the last 12 months, Rallybio insiders reported 22 transactions on SEC Form 4: 14 open-market purchases and 1 sale. Insiders bought $4.2 million and sold $3,992 worth of stock, for net insider buying of $4.2 million. The largest seller was Lieber Jonathan I, with $3,992 in reported sales.
The most recent filing shows Uden Stephen (Chief Executive Officer) reporting a transaction in 22,456 shares at $6.08 on Oct 6, 2026. Insider sales are common for compensation, tax and diversification reasons, while open-market purchases are rarer; tracking both helps put RLYB's ownership changes in context.
Summary generated from market data by MetaCap's automated system. Methodology
RLYB insider transactions
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Oct 6, 2026 | Uden StephenChief Executive Officer | Option exercise | 22,456 | $136.53K | Form 4 |
| Sep 29, 2026 | Lieber Jonathan IChief Financial Officer | Option exercise | 5,000 | $30.40K | Form 4 |
| Sep 24, 2026 | Liu HuiDirector | Option exercise | 8,482 | $64.46K | Form 4 |
| Sep 24, 2026 | Liu HuiDirector | Option exercise | 3,562 | $8.48K | Form 4 |
| Sep 16, 2026 | Chung WendyDirector | Option exercise | 3,562 | $8.48K | Form 4 |
| Jul 6, 2026 | Boudreau Helen MDirector | Option exercise | 3,562 | $8.48K | Form 4 |
| May 19, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 200 | $2.76K | Form 4 |
| May 19, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 10,000 | $139.82K | Form 4 |
| May 18, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 6,009 | $83.98K | Form 4 |
| May 15, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 200 | $2.79K | Form 4 |
| May 15, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 100 | $1.38K | Form 4 |
| May 13, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 75,178 | $1.05M | Form 4 |
| May 13, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 4,081 | $56.31K | Form 4 |
| May 12, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 800 | $11.06K | Form 4 |
| May 11, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 19,900 | $278.60K | Form 4 |
| May 11, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 25,000 | $350.00K | Form 4 |
| May 11, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 5,100 | $71.39K | Form 4 |
| May 5, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 35,101 | $491.26K | Form 4 |
| May 4, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 116,904 | $1.63M | Form 4 |
| May 4, 2026 | ADAR1 Capital Management, LLC & Schneeberger Daniel10% Owner | Buy | 3,900 | $54.20K | Form 4 |
| Feb 23, 2026 | Lieber Jonathan IChief Financial Officer | Sale | 789 | $3.99K | Form 4 |
| Feb 18, 2026 | Lieber Jonathan IChief Financial Officer | Award | 2,500 | — | Form 4 |
Transaction codes follow SEC Form 4: P = open-market purchase, S = open-market sale, A = grant or award, M = option exercise, F = shares withheld for taxes. About Form 4