Rallybio (RLYB) stock: insider trades, news & valuation
Net buyingShare price and insider trades
Rallybio insider trading at a glance (Oct 9, 2026): in the past 12 months, 2 insiders bought $4.2M and 1 sold $4K of RLYB stock on the open market.
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RLYB insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | — | 0 |
| Q2 2026 | $4.2M | 14 | — | 0 |
| Q1 2026 | — | 0 | $4K | 1 |
Valuation, profit and volume
Summary
Over the past 12 months, 2 Rallybio Corp insiders reported open-market purchases totaling $4.2M, while 1 insider reported sales totaling $4K. Among insiders with enough purchase history to measure, Adar1 Capital Management, Llc (10% Owner) has the highest Insider Score at 67. 0 of 1 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| May 20SEC | Adar1 Capital Management, Llc10% Owner | Buy | 10,000926,152 held (+1%) | $13.98 | $140K | +21.7% | 67 |
| May 20SEC | Adar1 Capital Management, Llc10% Owner | Buy | 6,009916,152 held (+1%) | $13.98 | $84K | +21.7% | 67 |
| May 20SEC | Adar1 Capital Management, Llc10% Owner | Buy | 200926,352 held (+0%) | $13.80 | $3K | +23.3% | 67 |
| May 15SEC | Daniel Schneeberger10% Owner | Buy | 75,178909,843 held (+9%) | $14.00 | $1.1M | +21.6% | 54 |
| May 15SEC | Daniel Schneeberger10% Owner | Buy | 4,081834,665 held (+0%) | $13.80 | $56K | +23.3% | 54 |
| May 15SEC | Daniel Schneeberger10% Owner | Buy | 200910,143 held (+0%) | $13.95 | $3K | +22.0% | 54 |
| May 15SEC | Daniel Schneeberger10% Owner | Buy | 100909,943 held (+0%) | $13.80 | $1K | +23.3% | 54 |
| May 13SEC | Adar1 Capital Management, Llc10% Owner | Buy | 25,000809,884 held (+3%) | $14.00 | $350K | +21.6% | 67 |
| May 13SEC | Adar1 Capital Management, Llc10% Owner | Buy | 19,900829,784 held (+2%) | $14.00 | $279K | +21.6% | 67 |
| May 13SEC | Adar1 Capital Management, Llc10% Owner | Buy | 5,100784,884 held (+1%) | $14.00 | $71K | +21.6% | 67 |
| May 13SEC | Adar1 Capital Management, Llc10% Owner | Buy | 800830,584 held (+0%) | $13.83 | $11K | +23.1% | 67 |
| May 6SEC | Daniel Schneeberger10% Owner | Buy | 116,904744,683 held (+19%) | $13.97 | $1.6M | +21.8% | 54 |
| May 6SEC | Daniel Schneeberger10% Owner | Buy | 35,101779,784 held (+5%) | $14.00 | $491K | +21.6% | 54 |
| May 6SEC | Daniel Schneeberger10% Owner | Buy | 3,900627,779 held (+1%) | $13.90 | $54K | +22.4% | 54 |
| Feb 23SEC | Jonathan I LieberCFO | Sell | 7894,115 held (−16%) | $5.06 | $4K | +236.4% | — |
Insiders at Rallybio Corp
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Daniel Schneeberger10% Owner | $3.3M | — | May 15, 2026 | 54 |
| Adar1 Capital Management, Llc10% Owner | $938K | — | May 20, 2026 | 67 |
| Jonathan I LieberCFO | — | $4K | Feb 23, 2026 | — |
RLYB stock: common questions
Are Rallybio Corp insiders buying RLYB stock?
In the past 12 months, 2 insiders reported open-market purchases of RLYB worth $4.2M. The latest was 10% Owner Adar1 Capital Management, Llc bought $140K of RLYB at $13.98.
Are Rallybio Corp insiders selling RLYB stock?
1 insiders reported sales worth $4K over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is RLYB's 52-week range?
Over the past year RLYB has traded between $4.09 and $17.22. It last closed at $17.02 on Oct 9, 2026.