ARTBIO, a clinical-stage radiopharmaceutical company developing a new class of targeted alpha radioligand therapies (ARTs), today announced the closing of an oversubscribed and upsized $90 million Series A financing co-led by Third Rock Ventures and an undisclosed healthcare fund. Additionally, seed lead investors F-Prime Capital and Omega Funds participated substantially. The company's prior seed investment round of $23 million was announced in June 2023.

ARTBIO is a clinical-stage radiopharmaceutical company redefining cancer care by creating a new class of alpha radioligand therapies (ARTs). The unique ARTBIO approach selects the optimal alpha-precursor isotope (Pb212) and tumor-specific targets to create highly effective and safe therapeutics. The company's AlphaDirect™ technology, a first-of-its-kind Pb212 isolation method, enables a distributed manufacturing approach for the reliable production and delivery of ARTs. ARTBIO is advancing three pipeline programs with lead program AB001 currently in first in human trials.