Rallybio Corporation
RLYBHealthcare|Biotechnology|US
$15.75
+0.06 (+0.38%)
DCF Value
$10.28
Tangible Book / Share
$16.15
Graham Number
$41.29
Cash / Share
$15.87
Ownership Breakdown
54.4%
Float
5.4M
Shares Outstanding
2.9M
Float Shares
Major Holders (20)
Combined: 183.0%
Holders of 5%+ from their latest Schedule 13D/13G filing in the last two years. Percentages are as of each filing date.
| Holder | Type | % of Class | Shares | Filed | Filing |
|---|---|---|---|---|---|
| ADAR1 Capital Management, LLC | IA, OO | 17.50% | 926,352 | Jun 5, 2026 | 13D/G |
| Daniel Schneeberger | HC, IN | 17.50% | 926,352 | Jun 5, 2026 | 13D/G |
| Abigail P. Johnson | Individual | 15.00% | 794,720 | Aug 6, 2026 | 13D/G |
| FMR LLC | Holding company | 15.00% | 794,720 | Aug 6, 2026 | 13D/G |
| Shabet Rose Sharon | Individual | 9.99% | 528,954 | May 15, 2026 | 13D/G |
| Halvorsen Ole Andreas | Individual | 9.99% | 528,954 | May 15, 2026 | 13D/G |
| Viking Global Opportunities Illiquid Investments Sub-Master LP | Partnership | 9.99% | 528,954 | May 15, 2026 | 13D/G |
| Viking Global Opportunities Portfolio GP LLC | Other | 9.99% | 528,954 | May 15, 2026 | 13D/G |
| Viking Global Opportunities GP LLC | Other | 9.99% | 528,954 | May 15, 2026 | 13D/G |
| Viking Global Opportunities Parent GP LLC | Other | 9.99% | 528,954 | May 15, 2026 | 13D/G |
| Viking Global Investors LP | Partnership | 9.99% | 528,954 | May 15, 2026 | 13D/G |
| Ott David C. | Individual | 9.99% | 4,222,969 | Feb 17, 2026 | 13D/G |
| TPG GP A, LLC | Other | 7.20% | 378,551 | Mar 3, 2026 | 13D/G |
| James G. Coulter | Individual | 7.20% | 378,551 | Mar 3, 2026 | 13D/G |
| Jon Winkelried | Individual | 7.20% | 378,551 | Mar 3, 2026 | 13D/G |
| Nantahala Capital Management, LLC | Investment adviser | 3.56% | 188,422 | Aug 14, 2026 | 13D/G |
| Wilmot B. Harkey | Holding company | 3.56% | 188,422 | Aug 14, 2026 | 13D/G |
| Daniel Mack | Holding company | 3.56% | 188,422 | Aug 14, 2026 | 13D/G |
| Johnson & Johnson Innovation - JJDC, Inc. | Corporation | 2.90% | 152,901 | Apr 13, 2026 | 13D/G |
| Johnson & Johnson | Corporation | 2.90% | 152,901 | Apr 13, 2026 | 13D/G |
Insider Trades (100)
Last 4 quarters: 540,616 acquired · 202,171 disposed
| Insider | Position | Date | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| MACKAY MARTIN | director | Nov 4, 2026 | OPTION EX. | 18,055 | $4.45 | $80.3K | Form 4 |
| MACKAY MARTIN | director | Nov 4, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| MACKAY MARTIN | director | Nov 4, 2026 | OPTION EX. | 11,607 | $7.60 | $88.2K | Form 4 |
| MACKAY MARTIN | director | Nov 4, 2026 | OPTION EX. | 11,607 | $7.60 | $88.2K | Form 4 |
| MACKAY MARTIN | director | Nov 4, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| MACKAY MARTIN | director | Nov 4, 2026 | OPTION EX. | 18,055 | $4.45 | $80.3K | Form 4 |
| HUNT RONALD | director | Nov 4, 2026 | OPTION EX. | 14,305 | $4.45 | $63.7K | Form 4 |
| HUNT RONALD | director | Nov 4, 2026 | OPTION EX. | 14,305 | $4.45 | $63.7K | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Nov 2, 2026 | OPTION EX. | 7,124 | $14.88 | $106.0K | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Nov 2, 2026 | OPTION EX. | 7,124 | $14.88 | $106.0K | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Oct 29, 2026 | OPTION EX. | 13,589 | $6.08 | $82.6K | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Oct 29, 2026 | OPTION EX. | 7,875 | $14.88 | $117.2K | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Oct 29, 2026 | OPTION EX. | 7,875 | $14.88 | $117.2K | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Oct 29, 2026 | OPTION EX. | 13,589 | $6.08 | $82.6K | Form 4 |
| HUNT RONALD | director | Oct 29, 2026 | OPTION EX. | 2,062 | $15.28 | $31.5K | Form 4 |
| HUNT RONALD | director | Oct 29, 2026 | OPTION EX. | 9,196 | $7.60 | $69.9K | Form 4 |
| HUNT RONALD | director | Oct 29, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| HUNT RONALD | director | Oct 29, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| HUNT RONALD | director | Oct 29, 2026 | OPTION EX. | 9,196 | $7.60 | $69.9K | Form 4 |
| HUNT RONALD | director | Oct 29, 2026 | OPTION EX. | 2,062 | $15.28 | $31.5K | Form 4 |
| Nash Christine A | director | Oct 28, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| Nash Christine A | director | Oct 28, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| Uden Stephen | director, officer: Chief Executive Officer | Oct 27, 2026 | OPTION EX. | 33,244 | $6.08 | $202.1K | Form 4 |
| Uden Stephen | director, officer: Chief Executive Officer | Oct 27, 2026 | OPTION EX. | 33,244 | $6.08 | $202.1K | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Oct 26, 2026 | AWARD | 2,500 | — | — | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Oct 27, 2026 | SELL | 599 | $16.04 | $9.6K | Form 4 |
| Chung Wendy | director | Oct 26, 2026 | OPTION EX. | 2,062 | $15.28 | $31.5K | Form 4 |
| Chung Wendy | director | Oct 26, 2026 | OPTION EX. | 2,062 | $15.28 | $31.5K | Form 4 |
| Soteropoulos Paula | director | Oct 16, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| Soteropoulos Paula | director | Oct 16, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| Boudreau Helen M | director | Oct 16, 2026 | OPTION EX. | 2,062 | $15.28 | $31.5K | Form 4 |
| Boudreau Helen M | director | Oct 16, 2026 | OPTION EX. | 2,062 | $15.28 | $31.5K | Form 4 |
| Hopfner Robert Lorne | director | Oct 12, 2026 | OPTION EX. | 2,062 | $15.28 | $31.5K | Form 4 |
| Hopfner Robert Lorne | director | Oct 12, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| Hopfner Robert Lorne | director | Oct 12, 2026 | OPTION EX. | 9,196 | $7.60 | $69.9K | Form 4 |
| Hopfner Robert Lorne | director | Oct 12, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| Hopfner Robert Lorne | director | Oct 12, 2026 | OPTION EX. | 9,196 | $7.60 | $69.9K | Form 4 |
| Hopfner Robert Lorne | director | Oct 12, 2026 | OPTION EX. | 2,062 | $15.28 | $31.5K | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Oct 9, 2026 | OPTION EX. | 3,910 | $6.08 | $23.8K | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Oct 9, 2026 | OPTION EX. | 3,910 | $6.08 | $23.8K | Form 4 |
| Uden Stephen | director, officer: Chief Executive Officer | Oct 6, 2026 | OPTION EX. | 22,456 | $6.08 | $136.5K | Form 4 |
| Uden Stephen | director, officer: Chief Executive Officer | Oct 6, 2026 | OPTION EX. | 22,456 | $6.08 | $136.5K | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Sep 29, 2026 | OPTION EX. | 5,000 | $6.08 | $30.4K | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Sep 29, 2026 | OPTION EX. | 5,000 | $6.08 | $30.4K | Form 4 |
| Liu Hui | director | Sep 24, 2026 | OPTION EX. | 8,482 | $7.60 | $64.5K | Form 4 |
| Liu Hui | director | Sep 24, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| Liu Hui | director | Sep 24, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| Liu Hui | director | Sep 24, 2026 | OPTION EX. | 8,482 | $7.60 | $64.5K | Form 4 |
| Chung Wendy | director | Sep 16, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| Chung Wendy | director | Sep 16, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| Boudreau Helen M | director | Jul 6, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| Boudreau Helen M | director | Jul 6, 2026 | OPTION EX. | 3,562 | $2.38 | $8.5K | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 19, 2026 | BUY | 200 | $13.80 | $2.8K | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 19, 2026 | BUY | 10,000 | $13.98 | $139.8K | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 18, 2026 | BUY | 6,009 | $13.98 | $84.0K | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 15, 2026 | BUY | 200 | $13.95 | $2.8K | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 15, 2026 | BUY | 100 | $13.80 | $1.4K | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 13, 2026 | BUY | 75,178 | $14.00 | $1.1M | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 13, 2026 | BUY | 4,081 | $13.80 | $56.3K | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 12, 2026 | BUY | 800 | $13.83 | $11.1K | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 11, 2026 | BUY | 19,900 | $14.00 | $278.6K | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 11, 2026 | BUY | 25,000 | $14.00 | $350.0K | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 11, 2026 | BUY | 5,100 | $14.00 | $71.4K | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 5, 2026 | BUY | 35,101 | $14.00 | $491.3K | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 4, 2026 | BUY | 116,904 | $13.97 | $1.6M | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 4, 2026 | BUY | 3,900 | $13.90 | $54.2K | Form 4 |
| ADAR1 Capital Management, LLC | 10 percent owner | May 4, 2026 | OTHER | 0 | — | — | Form 4 |
| FMR LLC | 10 percent owner, other: See Remark 1 | Mar 4, 2026 | OTHER | 0 | — | — | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Feb 18, 2026 | AWARD | 2,500 | — | — | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Feb 23, 2026 | SELL | 789 | $5.06 | $4.0K | Form 4 |
| MACKAY MARTIN | director | Feb 18, 2026 | AWARD | 18,055 | $4.45 | $80.3K | Form 4 |
| HUNT RONALD | director | Feb 18, 2026 | AWARD | 14,305 | $4.45 | $63.7K | Form 4 |
| Boudreau Helen M | director | May 13, 2025 | AWARD | 28,500 | $0.30 | $8.6K | Form 4 |
| Chung Wendy | director | May 13, 2025 | AWARD | 28,500 | $0.30 | $8.6K | Form 4 |
| HUNT RONALD | director | May 13, 2025 | AWARD | 28,500 | $0.30 | $8.6K | Form 4 |
| Nash Christine A | director | May 13, 2025 | AWARD | 28,500 | $0.30 | $8.6K | Form 4 |
| Hopfner Robert Lorne | director | May 13, 2025 | AWARD | 28,500 | $0.30 | $8.6K | Form 4 |
| Soteropoulos Paula | director | May 13, 2025 | AWARD | 28,500 | $0.30 | $8.6K | Form 4 |
| Liu Hui | director | May 13, 2025 | AWARD | 28,500 | $0.30 | $8.6K | Form 4 |
| MACKAY MARTIN | director | May 13, 2025 | AWARD | 28,500 | $0.30 | $8.6K | Form 4 |
| Uden Stephen | director, officer: Chief Executive Officer | Feb 14, 2025 | AWARD | 453,700 | $0.76 | $344.8K | Form 4 |
| Ryder Steven | Chief Medical Officer | Feb 14, 2025 | AWARD | 180,000 | $0.76 | $136.8K | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Feb 14, 2025 | AWARD | 180,000 | $0.76 | $136.8K | Form 4 |
| MACKAY MARTIN | director | Jan 2, 2025 | AWARD | 92,857 | $0.95 | $88.2K | Form 4 |
| HUNT RONALD | director | Jan 2, 2025 | AWARD | 73,571 | $0.95 | $69.9K | Form 4 |
| Hopfner Robert Lorne | director | Jan 2, 2025 | AWARD | 73,571 | $0.95 | $69.9K | Form 4 |
| Liu Hui | director | Jan 2, 2025 | AWARD | 67,857 | $0.95 | $64.5K | Form 4 |
| HUNT RONALD | director | May 15, 2024 | AWARD | 16,500 | $1.91 | $31.5K | Form 4 |
| Boudreau Helen M | director | May 15, 2024 | AWARD | 16,500 | $1.91 | $31.5K | Form 4 |
| Liu Hui | director | May 15, 2024 | AWARD | 16,500 | $1.91 | $31.5K | Form 4 |
| PARMAR KUSH | director | May 15, 2024 | AWARD | 16,500 | $1.91 | $31.5K | Form 4 |
| Soteropoulos Paula | director | May 15, 2024 | AWARD | 16,500 | $1.91 | $31.5K | Form 4 |
| Nash Christine A | director | May 15, 2024 | AWARD | 16,500 | $1.91 | $31.5K | Form 4 |
| Hopfner Robert Lorne | director | May 15, 2024 | AWARD | 16,500 | $1.91 | $31.5K | Form 4 |
| Chung Wendy | director | May 15, 2024 | AWARD | 16,500 | $1.91 | $31.5K | Form 4 |
| Uden Stephen | director, officer: Chief Executive Officer | Feb 15, 2024 | AWARD | 216,000 | $1.86 | $401.8K | Form 4 |
| MACKAY MARTIN | director, officer: Executive Chairman | Feb 15, 2024 | AWARD | 216,000 | $1.86 | $401.8K | Form 4 |
| Lieber Jonathan I | Chief Financial Officer | Feb 15, 2024 | AWARD | 120,000 | $1.86 | $223.2K | Form 4 |
| Ryder Steven | Chief Medical Officer | Feb 15, 2024 | AWARD | 120,000 | $1.86 | $223.2K | Form 4 |
| PARMAR KUSH | director | Jan 2, 2024 | AWARD | 27,118 | $2.40 | $65.1K | Form 4 |