ADAR1 Capital Management, LLC bought $227k of RLYB
owner at Rallybio Corp. 16,209 shares at an average of $13.98, traded May 18, 2026, filed May 20, 2026.
Score components
- +12Role10% owner
- +13Trade size$227k at market
- 0Relative to holdingsHoldings up 1.8%
- 0Price contextNo price history yet
- 0ClusterNo other insider buying within 14 days
- +5Repeat buying4 buys in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
- -5Outside holderA 10% owner who is not an officer or director
What happened after comparable buys
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m +9.5%, 3m +16.6%, 6m -.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001104659-26-064729, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| May 18, 2026 | POpen-market purchase Common Stockindirect: See Footnote | +6,009 | $13.98 | $84k | 916,152 | May 20, 2026 |
| May 19, 2026 | POpen-market purchase Common Stockindirect: See Footnote | +10,000 | $13.98 | $140k | 926,152 | May 20, 2026 |
| May 19, 2026 | POpen-market purchase Common Stockindirect: See Footnote | +200 | $13.80 | $2,760 | 926,352 | May 20, 2026 |
Related signals
Other insiders at Rallybio Corp and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 40Moderate | RLYBbuy Rallybio Corp | ADAR1 Capital Management, LLC owner | $1.1M 79,559 shares | +10% | |
| 36Weak | RLYBbuy Rallybio Corp | ADAR1 Capital Management, LLC owner | $711k 50,800 shares | +7% | |
| 38Weak | RLYBbuy Rallybio Corp | ADAR1 Capital Management, LLC owner | $2.2M 155,905 shares | +25% | |
| 27Weak | RLYBsell Rallybio Corp | Jonathan I Lieber Chief Financial Officer | $3,992 789 shares | -16% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.