United Kingdom · Series A startup
4 rounds we have observed, with the 10 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Raised 6 months ago
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Funding summaryUpdated 15 Nov 2026
$121Mraised across 4 rounds since 2023, from 5 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
4BIO CapitalLead
British Business Bank
Abingworth
LifeArc Ventures
Modi Ventures
Sound Bioventures
Medical Incubator Japan K.K.
Criteria Bio Ventures
Pathway Bioventures
ServierReported by Ventureburn and 1 other
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet
Cytospire Therapeutics filed 6 raises, $40M in all. Filings say how much was sold and to how many investors; they never name the investors.
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Missing a round, or an investor who was in one? Tell us.
Cytospire Therapeutics's investors include 4BIO Capital, British Business Bank, Abingworth, LifeArc Ventures and Modi Ventures, and 5 more on record. 4BIO Capital led its latest round.
Cytospire Therapeutics has raised $121M across 4 rounds since 2023.
Cytospire Therapeutics's most recent round was a Series A of $83M in May 2026, led by 4BIO Capital.
Its most recent round, $83M in May 2026, is also its largest on record.
Cytospire Therapeutics's first round on record, in May 2026, was backed by 4BIO Capital, British Business Bank and Abingworth and 7 others.
Cytospire Therapeutics's latest named round is a Series A, in May 2026.
Cytospire Therapeutics is based in the United Kingdom.
4BIO Capital led the Series A in 2026.
In the same sector, and raised in the last eighteen months.
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United Kingdom · 
