RA Capital Management

Activity from announced rounds

Activity in this selectionUnited States · Oct 14, 2026 · Jul 17, 2026
Rounds participated in
8
Confirmed lead rounds
2
4 roles undisclosed
New companies
8
First participation on record · 0 follow-on
Funding in participating rounds
$957.5M
8 disclosed · full round size, not this investor’s share

By stage

Series A3
Series C+3
Series B1
Undisclosed1

By primary sector

Biotech8

By country

United States8

Rounds

8 in this selection
Circle Pharma, Inc.

Circle Pharma discovers macrocycle medicines for cancer and other serious diseases using its MXMO platform, which combines computational, structure-based design with synthetic chemistry to create cell-permeable compounds against difficult protein targets. Its lead programs are investigational and at discovery or preclinical stages.

$92.5MSeries E
Participant
Solstice Oncology

A clinical-stage immunotherapy company is advancing an engineered CTLA-4 antibody for earlier cancer treatment.

$225MSeries A
Lead
Superluminal Medicines

Superluminal Medicines combines structural biology, protein dynamics, machine learning and experimental testing to discover small-molecule drugs for difficult G protein-coupled receptor targets. Its pipeline focuses on endocrine and cardiometabolic diseases, including rare genetic and hypothalamic obesity.

$60MSeries B
Participant
Typewriter Therapeutics

Typewriter Therapeutics is developing an all-RNA gene-writing platform that inserts therapeutic genes at a defined genomic site without viral vectors or double-strand DNA breaks. Its programs target in vivo engineered CAR-T cells and gene insertion for severe genetic diseases, including liver disorders.

$56MSeries A
Lead
AusperBio

Develops oligonucleotide therapeutics targeting chronic hepatitis B

$120MSeries C
Role not disclosed
Abcuro

Develops immunotherapies that selectively deplete cytotoxic T cells to treat autoimmune diseases

$66MSeries D
Role not disclosed
Infinimmune

Develops human-derived antibody therapeutics for atopic dermatitis and inflammatory disease

$75MSeries A
Role not disclosed
LifeMine Therapeutics

Develops fungal genome-derived therapeutics for organ transplant rejection

$263MSeries D+Series E
Role not disclosed