Funding round
Rakuten Medical Series F
Rakuten Medical, which works in precision photoimmunotherapy development in San Diego, raised $100M in a Series F round announced on 7 Jan 2026, led by Taiwania Capital. 11 firms took part. It is Rakuten Medical's fourth venture round on record; the one before was a Series E in Mar 2024.
$100M
Amount raised
Not disclosed
Post-money valuation
11
Investors
1 lead
Valuation
What this round says about the price
Rakuten Medical did not disclose a valuation in this round. It came 22 months after Rakuten Medical's Series E. It is 21% of the $485M Rakuten Medical has raised in the venture rounds on record. No later venture round is on record for Rakuten Medical.
Investors
Who put money in
Taiwania Capital led the round with 10 other firms.
Lead investor
- backs 37 venture-backed companies new investor
Also in the round
- backs 4 venture-backed companies new investor
- Mitsui Sumitomo Insurance new investor
- Sumitomo Mitsui Banking new investor
- new investor
- Nexus CVC new investor
- OEP Group new investor
- backs 45 venture-backed companies new investor
- Rakuten Group, Inc. new investor
- new investor
- Sumitomo Mitsui Trust Bank new investor
Use of proceeds
What the money is for
According to the announcement, the money goes to product development, geographic expansion, scaling operations and working capital.
- Product development
- Geographic expansion
- Scaling operations
- Working capital
Comparable rounds
How it compares
The closest in time: 1 in Pharmaceutical Products, then Series F rounds in any sector within 6 months:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| Orca Bio Pharmaceutical Products | 1 Jan 2026 | $250M | not disclosed | Lightspeed Venture Partners |
| Cyera Tech Companies | 8 Jan 2026 | $400M | $9.00B | Blackstone |
| Claroty Tech Companies | 22 Jan 2026 | $150M | $3.00B | Golub Growth |
| Aerospace and Defence | 15 Jan 2026 | $130M | not disclosed | Woven Capital |
| Perplexity Tech Companies | 1 Dec 2025 | $500M | $20.00B | not named |
| Kavak Hosting & Cloud Infrastructure Providers | 17 Feb 2026 | $300M | $8.70B | Andreessen Horowitz and WCM Investment Management |
| Harvey Tech Companies | 4 Dec 2025 | $160M | $8.00B | Andreessen Horowitz |
| Octane Loans & Financing | 15 Dec 2025 | $100M | $1.30B | Valar Ventures |
Sources
Where this comes from
Reported by 6 sources.
Questions
Frequently asked
How much did Rakuten Medical raise in its Series F round?
Rakuten Medical raised $100M in its Series F round, announced in Jan 2026.
Who led Rakuten Medical's Series F round?
Taiwania Capital led it, with Daiwa Securities Group, Mitsui Sumitomo Insurance, Sumitomo Mitsui Banking, ABIES Capital and Nexus CVC and 5 more.
What was Rakuten Medical's valuation at the Series F round?
It was not disclosed.