RLYB logo

Rallybio Corporation

RLYB
Healthcare|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

About

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 preclinical development for addressing ophthalmic conditions driven by complement system activity. Furthermore, RLYB116, an inhibitor designed to target complement component 5 (C5) for various complement dysregulation disorders, has successfully completed its Phase 1 trial. Another preclinical antibody, RLYB332, is under investigation for treating severe anemia characterized by ineffective erythropoiesis and iron overload. Rallybio has established strategic collaborations to further its development efforts. It maintains an alliance with AbCellera for the identification, development, and commercialization of novel antibody-based therapeutics in rare diseases. Additionally, the firm partners with Exscientia on the creation of small molecule therapeutics for rare diseases, and with Johnson & Johnson to deliver therapeutic options to expectant mothers at risk of fetal and neonatal alloimmune thrombocytopenia. Established in 2018, Rallybio Corporation is headquartered in New Haven, Connecticut.

Stock Price

+208.2%(1Y)
1M
-7.3%
3M
-2.5%
6M
+9.5%
YTD
+186.9%
1Y
+202.9%
3Y
-34.4%
5Y
-89.2%

Pipeline Summary

3 total trials
1
Phase 1
1
Phase 2
0
Phase 3
0
Phase 4
Completed: 2Terminated: 1

Key Facts

Market Cap$84.8M
Employees14 (-44% YoY)
CEOStephen Uden
IPO DateJul 29, 2021
Beta-0.77
52-Week Range$3.67 – $17.574
Avg Volume23,251
ExchangeNASDAQ

Ownership

Float54.4%
Shares Outstanding5.4M

Recent Insider Trades

MACKAY MARTINOPTION EX.
Nov 4, 202618,055 shares @ $4.45
MACKAY MARTINOPTION EX.
Nov 4, 20263,562 shares @ $2.38
MACKAY MARTINOPTION EX.
Nov 4, 202611,607 shares @ $7.60
MACKAY MARTINOPTION EX.
Nov 4, 202611,607 shares @ $7.60
MACKAY MARTINOPTION EX.
Nov 4, 20263,562 shares @ $2.38

Peers

BOLDBoundless Bio, Inc.
$56.0M
CVKDCadrenal Therapeutics, Inc. Common Stock
$3.5M
IBIOiBio, Inc.
$47.5M
INTSIntensity Therapeutics, Inc.
$8.1M
ITRMIterum Therapeutics plc
$1.6M
KLTOKlotho Neurosciences, Inc.
$20.1M
QTTBQ32 Bio Inc.
$275.4M
SONNSonnet BioTherapeutics Holdings, Inc.
$8.4M
Data last updated: Nov 9, 2026, 04:31 AM