| $350M | ||
| $217M | ||
| $172M | ||
| $109M | ||
| $107M | ||
| $104M |
Buys | $4,229,263 | 8 | 80 |
Sells | $13,600 | 2 | 20 |
| ADAR1 Capital Management, LLC | 10 percent owner | 8 | $4.23M | 0 | $0 | $4.23M |
| Lieber Jonathan I | Chief Financial Officer | 0 | $0 | 2 | $13,600 | $-13,600 |
Rallybio Corporation is a clinical-stage biotechnology firm dedicated to discovering and bringing to market transformative therapies for individuals facing severe and uncommon illnesses. Its most advanced therapeutic candidate, RLYB212, is a monoclonal anti-HPA-1a antibody currently undergoing Phase II clinical trials. This candidate, along with RLYB211, is aimed at preventing fetal and neonatal alloimmune thrombocytopenia (FNAIT). The company's pipeline also includes RLYB114, a pegylated complement factor 5 (C5)-targeted Affibody molecule in …
Over the last 12 months, insiders at Rallybio Corporation have bought $4.23M and sold $13,600 worth of Rallybio Corporation stock.
On average, over the past 5 years, insiders at Rallybio Corporation have bought $1.53M and sold $3.5M worth of stock each year.
Highest buying activity among insiders over the last 12 months: ADAR1 Capital Management, LLC (10 percent owner) — $4.23M.
The last purchase of 10,200 shares for transaction amount of $142,582 was made by ADAR1 Capital Management, LLC (10 percent owner) on 2026‑05‑19.
| 2026-10-27 | Sale | Lieber Jonathan I | Chief Financial Officer | 599 0.0114% | $16.04 | $9,608 | -1.07% | |
| 2026-05-19 | ADAR1 Capital Management, LLC | 10 percent owner | 10,200 0.1897% | $13.98 | $142,582 | +15.33% | ||
| 2026-05-18 | ADAR1 Capital Management, LLC | 10 percent owner | 6,009 0.1124% | $13.98 | $83,981 | +15.96% | ||
| 2026-05-15 | ADAR1 Capital Management, LLC | 10 percent owner | 300 0.0055% | $13.90 | $4,170 | +14.20% | ||
| 2026-05-13 | ADAR1 Capital Management, LLC | 10 percent owner | 79,259 1.4608% | $13.99 | $1.11M | +13.66% | ||
| 2026-05-12 | ADAR1 Capital Management, LLC | 10 percent owner | 800 0.0149% | $13.83 | $11,063 | +16.25% | ||
| 2026-05-11 | ADAR1 Capital Management, LLC | 10 percent owner | 50,000 0.9452% | $14.00 | $699,992 | +16.39% | ||
| 2026-05-05 | ADAR1 Capital Management, LLC | 10 percent owner | 35,101 0.6504% | $14.00 | $491,260 | +13.62% | ||
| 2026-05-04 | ADAR1 Capital Management, LLC | 10 percent owner | 120,804 2.2592% | $13.97 | $1.69M | +14.87% | ||
| 2026-02-23 | Sale | Lieber Jonathan I | Chief Financial Officer | 789 0.0137% | $5.06 | $3,992 | +189.55% | |
| 2023-03-14 | Lieber Jonathan I | 5,000 0.0123% | $5.21 | $26,050 | -13.59% | |||
| 2023-03-07 | Sale | PARMAR KUSH | director | 100,000 0.242% | $8.20 | $820,000 | -44.36% | |
| 2023-03-07 | Sale | 5AM Partners V, LLC | 10 percent owner | 100,000 0.242% | $8.20 | $820,000 | -44.36% | |
| 2022-06-03 | Sale | ROCKLAGE SCOTT M | 99,671 0.4398% | $12.50 | $1.25M | -23.70% | ||
| 2022-06-03 | Sale | PARMAR KUSH | 99,671 0.4398% | $12.50 | $1.25M | -23.70% | ||
| 2022-05-23 | Sale | ROCKLAGE SCOTT M | 33,553 0.1126% | $13.00 | $436,189 | -43.36% | ||
| 2022-05-23 | Sale | PARMAR KUSH | 33,553 0.1126% | $13.00 | $436,189 | -43.36% | ||
| 2022-03-21 | Fryer Jeffrey M | See Remarks | 3,000 0.0103% | $8.04 | $24,120 | +4.79% | ||
| 2022-02-08 | Sale | PARMAR KUSH | director | 210,000 0.6366% | $13.05 | $2.74M | -36.62% | |
| 2022-02-08 | Sale | 5AM Opportunities I, L.P. | 10 percent owner | 210,000 0.6366% | $13.05 | $2.74M | -36.62% |
| ADAR1 Capital Management, LLC | 10 percent owner | 926352 17.2059% | $14.69M | 8 | 0 | |
| Lieber Jonathan I | Chief Financial Officer | 15551 0.2888% | $246,638.86 | 1 | 2 | <0.0001% |
| VIKING GLOBAL INVESTORS LP | 10 percent owner | 4194777 77.9128% | $66.53M | 1 | 0 | <0.0001% |
| SHANNON TIMOTHY M | director | 2409712 44.7574% | $38.22M | 1 | 0 | <0.0001% |
| PARMAR KUSH | director | 2378969 44.1864% | $37.73M | 1 | 4 | <0.0001% |
| HUNT RONALD | director | 2301603 42.7494% | $36.5M | 1 | 0 | <0.0001% |
| Hopfner Robert Lorne | director | 2267411 42.1144% | $35.96M | 1 | 0 | <0.0001% |
| 5AM Opportunities I, L.P. | 10 percent owner | 1335637 24.8078% | $21.18M | 1 | 1 | <0.0001% |
| Uden Stephen | See Remarks | 719127 13.3569% | $11.41M | 2 | 0 | +0.48% |
| MACKAY MARTIN | Chief Executive Officer | 282609 5.2491% | $4.48M | 2 | 0 | <0.0001% |
| Fryer Jeffrey M | See Remarks | 47048 0.8739% | $746,181.28 | 3 | 0 | +2.53% |
$9,405,928 | 107 | 12.61% | $74.85M | |
$1,701,941 | 56 | 17.58% | $93.09M | |
$66,137,559 | 49 | 6.29% | $89.66M | |
$77,146,704 | 43 | 13.28% | $93.12M | |
$26,786,140 | 22 | -18.62% | $78.7M |
| Increased Positions | 13 | +25.49% | 702,051 | +19.34% |
| Decreased Positions | 14 | -27.45% | 134,609 | -3.71% |
| New Positions | 4 | New | 8,395 | New |
| Sold Out Positions | 3 | Sold Out | 94,109 | Sold Out |
| Total Postitions | 50 | -1.96% | 4M | +15.63% |
| Viking Global Investors Lp | $2,966.00 | 9.99% | 4.19M | 0 | 0% | 2025-09-30 |
| Johnson & Johnson | $2,571.00 | 8.66% | 3.64M | 0 | 0% | 2025-09-30 |
| 5Am Venture Management, Llc | $2,567.00 | 8.65% | 3.63M | 0 | 0% | 2025-09-30 |
| New Leaf Venture Partners, L.L.C. | $2,334.00 | 7.86% | 3.3M | 0 | 0% | 2025-09-30 |
| Tpg Gp A, Llc | $2,141.00 | 7.21% | 3.03M | 0 | 0% | 2025-09-30 |
| Pivotal Bioventure Partners Investment Advisor Llc | $1,700.00 | 5.73% | 2.4M | 0 | 0% | 2025-09-30 |
| Fmr Llc | $1,198.00 | 4.03% | 1.69M | -175,888 | -9.4% | 2025-09-30 |
| Almitas Capital Llc | $1,088.00 | 3.66% | 1.54M | -278,765 | -15.34% | 2025-09-30 |
| Vanguard Group Inc | $707.00 | 2.38% | 999,627 | +89,686 | +9.86% | 2025-09-30 |
| Aju Ib Investment Co., Ltd. | $534.00 | 1.8% | 754,678 | 0 | 0% | 2025-09-30 |