Rallybio Corp
RLYB- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001739410
No open-market purchases or sales by Rallybio Corp insiders were filed in the last 90 days; 37 institutions reported holding it in 13F filings for Q2 2026, worth $68.1M in total; Viking Global Investors is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Rallybio Corp insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Rallybio Corp, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Chung Wendy | Director | 3,562 | Sep 18, 2026 | 1 |
| Boudreau Helen M | Director | 6,542 | Jul 10, 2026 | 1 |
| Schneeberger Daniel | 10% Owner | 926,352Indirect | May 20, 2026 | 4 |
| ADAR1 Capital Management, LLC | 10% Owner | 926,352Indirect | May 20, 2026 | 4 |
| Lieber Jonathan I | Chief Financial Officer | 4,115 | Feb 23, 2026 | 1 |
| Hunt Ronald | Director | 2,301,603Indirect | Feb 20, 2026 | 1 |
| Mackay Martin | Director | 282,609 | Feb 20, 2026 | 1 |
| Hopfner Robert Lorne | Director | 2,267,411Indirect | May 15, 2025 | 0 |
| Nash Christine A | Director | – | May 15, 2025 | 0 |
| Soteropoulos Paula | Director | – | May 15, 2025 | 0 |
| Liu Hui | Director | – | May 15, 2025 | 0 |
| Uden Stephen | Chief Executive Officer | 719,127 | Feb 19, 2025 | 0 |
| Ryder Steven | Chief Medical Officer | – | Feb 19, 2025 | 0 |
| Parmar Kush | Director | 2,378,969Indirect | May 17, 2024 | 0 |
| Rocklage Scott M | 10% Owner | 2,378,969Indirect | Mar 9, 2023 | 0 |
| Schwab Andrew J. | 10% Owner | 2,378,969Indirect | Mar 9, 2023 | 0 |
| 5AM Ventures V, L.P. | 10% Owner | 2,378,969Indirect | Mar 9, 2023 | 0 |
| 5AM Partners V, LLC | 10% Owner | 2,378,969Indirect | Mar 9, 2023 | 0 |
| Viking Global Investors LP | 10% Owner | 4,194,777Indirect | Nov 17, 2022 | 0 |
| Halvorsen Ole Andreas | 10% Owner | 4,194,777Indirect | Nov 17, 2022 | 0 |
| Ott David C. | 10% Owner | 4,194,777Indirect | Nov 17, 2022 | 0 |
| Viking Global Opportunities Portfolio GP LLC | 10% Owner | 4,194,777Indirect | Nov 17, 2022 | 0 |
| Viking Global Opportunities GP LLC | 10% Owner | 4,194,777Indirect | Nov 17, 2022 | 0 |
| Viking Global Opportunities Illiquid Investments Sub-Master LP | 10% Owner | 4,194,777Indirect | Nov 17, 2022 | 0 |
| Shabet Rose Sharon | 10% Owner | 4,194,777Indirect | Nov 17, 2022 | 0 |
| Viking Global Opportunities Parent GP LLC | 10% Owner | – | Nov 17, 2022 | 0 |
| 5AM Opportunities I, L.P. | 10% Owner | 2,478,969Indirect | Jun 7, 2022 | 0 |
| 5AM Opportunities I (GP), LLC | 10% Owner | 2,478,969Indirect | Jun 7, 2022 | 0 |
| Fryer Jeffrey M | See Remarks | 47,048Indirect | Mar 23, 2022 | 0 |
| Shannon Timothy M | Director | 2,409,712Indirect | Jan 5, 2022 | 0 |
| FMR LLC | Other: See Remark 1 | 1,694,388Indirect | Aug 4, 2021 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| May 20, 2026 (view filing)8:45 PM ET | May 18-19 | 2 days | Schneeberger Daniel and 1 other10% Owner | PPurchase | +16.2K | $13.98 | +$226.6K | +1.8%926.4K after | 3 lots |
| May 15, 2026 (view filing)8:49 PM ET | May 13-15 | 2 days | Schneeberger Daniel and 1 other10% Owner | PPurchase | +79.6K | $13.99 | +$1.11M | +9.6%910.1K after | 4 lots |
| May 13, 2026 (view filing)9:22 PM ET | May 11-12 | 2 days | Schneeberger Daniel and 1 other10% Owner | PPurchase | +50.8K | $14.00 | +$711.1K | +6.5%830.6K after | 4 lots |
| May 6, 2026 (view filing)9:32 PM ET | May 4-5 | 2 days | Schneeberger Daniel and 1 other10% Owner | PPurchase | +155.9K | $13.97 | +$2.18M | +25.0%779.8K after | 3 lots |
| Feb 23, 2026 (view filing) | Feb 23 | Same day | Lieber Jonathan IChief Financial Officer | SSale | −789 | $5.06 | −$3.99K | −16.1%4.12K after | |
| Mar 16, 2023 (view filing) | Mar 14 | 2 days | Lieber Jonathan ISee Remarks | PPurchase | +5.00K | $5.21 | +$26.1K | New position5.00K after | |
| Mar 9, 2023 (view filing)4:35 PM ET | Mar 7 | 2 days | Rocklage Scott M and 3 others10% Owner | SSale | −100.0K | $8.20 | −$820.0K | −4.0%2.38M after | Duplicate filing |
| Mar 9, 2023 (view filing) | Mar 7 | 2 days | Parmar KushDirector | SSale | −100.0K | $8.20 | −$820.0K | −4.0%2.38M after | |
| Nov 17, 2022 (view filing)4:30 PM ET | Nov 15 | 2 days | Viking Global Investors LP and 7 others10% Owner | PPurchase | +3.33M | $6.00 | +$20.0M | –3.33M after | Derivative |
| Jun 7, 2022 (view filing)5:02 PM ET | Jun 3 | 4 days | Rocklage Scott M and 5 others10% Owner | SSale | −150.0K | $12.50 | −$1.88M | −5.7%2.48M after | 2 lots |
| Jun 7, 2022 (view filing) | Jun 3 | 4 days | Parmar KushDirector, 10% Owner | SSale | −150.0K | $12.50 | −$1.88M | −10.7%1.25M after | 2 lots |
| May 25, 2022 (view filing)6:31 PM ET | May 23 | 2 days | Rocklage Scott M and 5 others10% Owner | SSale | −100.0K | $13.00 | −$1.30M | −3.7%2.58M after | 2 lots |
| May 25, 2022 (view filing) | May 23 | 2 days | Parmar KushDirector, 10% Owner | SSale | −100.0K | $13.00 | −$1.30M | −7.1%1.30M after | 2 lots |
| Mar 23, 2022 (view filing) | Mar 21 | 2 days | Fryer Jeffrey MSee Remarks | PPurchase | +3.00K | $8.04 | +$24.1K | +6.8%47.0K after | |
| Feb 10, 2022 (view filing)6:24 PM ET | Feb 8 | 2 days | Rocklage Scott M and 5 others10% Owner | SSale | −210.0K | $13.05 | −$2.74M | −7.4%2.65M after | 2 lots |
| Feb 10, 2022 (view filing) | Feb 8 | 2 days | Parmar KushDirector | SSale | −210.0K | $13.05 | −$2.74M | −13.6%1.34M after | 2 lots |
| Jan 21, 2022 (view filing) | Jan 19 | 2 days | Fryer Jeffrey MSee Remarks | PPurchase | +1.40K | $8.70 | +$12.2K | +3.3%44.0K after | |
| Jan 14, 2022 (view filing) | Jan 12-13 | 2 days | Uden StephenSee Remarks | PPurchase | +10.0K | $9.85 | +$98.5K | +1.4%719.1K after | 3 lots |
| Jan 12, 2022 (view filing) | Jan 10-11 | 2 days | Mackay MartinChief Executive Officer | PPurchase | +10.0K | $10.35 | +$103.5K | +3.7%282.6K after | 2 lots |
| Jan 11, 2022 (view filing) | Jan 7 | 4 days | Fryer Jeffrey MSee Remarks | PPurchase | +10.0K | $9.41 | +$94.1K | +30.6%42.6K after | 2 lots |
| Aug 4, 2021 (view filing)9:17 PM ET | Aug 2 | 2 days | Rocklage Scott M and 5 others10% Owner | PPurchase | +615.4K | $13.00 | +$8.00M | +77.8%1.41M after | Duplicate filing |
| Aug 4, 2021 (view filing) | Aug 2 | 2 days | Parmar KushDirector | PPurchase | +615.4K | $13.00 | +$8.00M | +77.8%1.41M after | |
| Aug 4, 2021 (view filing) | Aug 2 | 2 days | Hopfner Robert LorneDirector | PPurchase | +576.9K | $13.00 | +$7.50M | +34.1%2.27M after | |
| Aug 4, 2021 (view filing) | Aug 2 | 2 days | Hunt RonaldDirector | PPurchase | +307.7K | $13.00 | +$4.00M | +15.4%2.30M after | 2 lots |
| Aug 4, 2021 (view filing) | Aug 2 | 2 days | Shannon Timothy MDirector | PPurchase | +76.9K | $13.00 | +$1.00M | +3.3%2.41M after | |
| Aug 2, 2021 (view filing)8:40 PM ET | Jul 29 | 4 days | Viking Global Investors LP and 6 others10% Owner | PPurchase | +806.0K | $13.00 | +$10.5M | +23.8%4.19M after |