Typical Series A round size for biotech startups in the US
Based on 194 Form D filings by United States biotech issuers at Series A stage, filed Nov 2024 – Oct 2026. Updated monthly. Change any segment to compare.
The numbers
- Median Series A raise: $10.5M
- Middle half of rounds: $4.6M – $18.4M
- Filings in sample: 194
- Rounds under $1M: 7%
- Rounds over $5M: 72%
- Updated Oct 2026
Read this number carefully
Form D undercounts small SAFE rounds and rounds that rely on other exemptions. Treat the median as a ceiling for "typical", not a target.
Compare segments
Biotech · Series A · Boston ($10.8M)