4BIO Capital

Activity from announced rounds

Activity in this selectionUnited States · Oct 20, 2026 · Jul 23, 2026
Rounds participated in
2
Confirmed lead rounds
1
All roles disclosed
New companies
2
First participation on record · 0 follow-on
Funding in participating rounds
$126M
2 disclosed · full round size, not this investor’s share

By stage

Seed1
Series A1

By primary sector

Biotech2

By country

United States2

Rounds

2 in this selection
Estuary Biotherapeutics

Estuary Biotherapeutics develops locally delivered gene therapies for patients with inherited polycystic kidney disease.

$93MSeries A
Participant
Cloverleaf Bio

Cloverleaf Bio is developing engineered transfer RNA therapies that use a modified tRNA payload to inhibit cancer cells' RNA-modifying enzymes. Its lead program targets liver cancer and is advancing toward clinical testing; a second antibody-tRNA program for colorectal cancer remains preclinical.

$33MSeed
Lead