Company
Cytospire Therapeutics Limited
Cytospire Therapeutics Limited is an active UK company (number 14688240), incorporated 2023, with 8 current directors including Casper Breum and Dr Samit Hirawat. Source: Companies House, updated 4th October 2026.
Official record Companies House · updated 4th October 2026 · Sources
Network
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Who leads it
- Casper BreumDirector · since 2026
- Dr Samit HirawatDirector · since 2026
- Alexis VandierDirector · since 2026
- Dr Carmine Daniel CircelliDirector · since 2026
- Owen Philip SmithDirector · since 2023
- Balaji MuralidharDirector · since 2023
- Peter Neville GoodfellowDirector · since 2023
- Natalie Marianne MountDirector · since 2023
Previous officers 1
- Dr Anna Emilia Gran 2026-2026 View profile
Directors and secretaries as filed at Companies House.
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About
- Incorporated
- 24/02/2023
Ownership
Owned by (3) iOwned byIndividuals and companies registered as having significant control over this company, from the Companies House PSC (persons with significant control) register. People whose ownership could not be confirmed to one individual are not listed as confirmed owners.
- Natalie Marianne Mount ceased 2023-11-30
25-50% shares, 25-50% voting · notified 2023-02-24 - Abingworth Bioventures 8 GP LP
25-50% shares, 25-50% voting · notified 2023-04-28 - 4BIO Ventures III GP LLP ceased 2024-10-03
25-50% shares, 25-50% voting · notified 2023-11-30
Group
- Cytospire Therapeutics Limited
is controlled by Natalie Marianne Mount
Evidence
ceased 25-50% shares, 25-50% voting · notified 2023-02-24, ceased 2023-11-30 · source: Companies House PSC register
Ultimately controlled by Natalie Marianne Mount.
Ownership paths are calculated from Companies House persons-with-significant-control filings. Each step shows the filed nature of control and dates; a step marked "ceased" is historical, not current.
Board analysis
Board DNA
How this board is put together, from the Companies House officer record and Charity Commission trustee records - deterministic, no AI.iBoard compositionCounted from the dated Companies House officer record: the current directors only, past directors excluded.
8 directors on the board
- Dr Samit Hirawat Director · appointed 2026
- Dr Carmine Daniel Circelli Director · appointed 2026
- Casper Breum Director · appointed 2026
- Balaji Muralidhar Director · appointed 2023
- Alexis Vandier Director · appointed 2026
- Peter Neville Goodfellow Director · appointed 2023
- Natalie Marianne Mount Director · appointed 2023
- Owen Philip Smith Director · appointed 2023
First-time vs portfolio directors
First-time (5)
- Dr Samit Hirawat Director · appointed 2026
- Casper Breum Director · appointed 2026
- Alexis Vandier Director · appointed 2026
- Peter Neville Goodfellow Director · appointed 2023
- Natalie Marianne Mount Director · appointed 2023
Portfolio (3)
- Dr Carmine Daniel Circelli Director · appointed 2026
- Balaji Muralidhar Director · appointed 2023
- Owen Philip Smith Director · appointed 2023
Left in the last 12 months
- Dr Anna Emilia Gran Director · appointed 2026 · resigned 2026
Where else this board sits iWhere else this board sitsThe charitable fields these directors govern in elsewhere, by Charity Commission classification. Excludes this company and any charity it is the legal face of.
The sectors these directors govern in elsewhere. This company, and any charity it is the legal face of, are excluded - counting them would just tell you what you are already looking at.
Sources
Official record from Companies House. Governance Register calculates the connections.
Record details
- Company number
- 14688240
- Status
- Active
- Type
- Private Limited Company
- Edition
- Register edition compiled 4th October 2026
- Labels
- Official record from Companies House · Calculated derived by Governance Register.
Contains public sector information licensed under the Open Government Licence v3.0. Report an issue · How we handle data