SYNCONA PORTFOLIO LTD

Foreign holder

15 UK shareholdings·2 ownership layers

SYNCONA PORTFOLIO LTD is a corporate shareholder registered in GUERNSEY and holds shares in 15 active UK companies, recorded across 35 share-class positions on their Companies House confirmation statements (CS01). Beneath those direct holdings OpenRegistry resolves a further 5 companies spanning 2 ownership layers, of which 12 direct holdings are themselves holding companies; the persons-with-significant-control register independently agrees on 3 of these holdings. It ranks #688 of 54,210 corporate shareholders by number of active UK holdings. Programmatic access via MCP at https://openregistry.sophymarine.com/mcp.

Companies held
15

Share-class positions
35

Identity
GUERNSEY entity

Jurisdiction
GUERNSEY

Ownership layers below
2

Holdings that are holding companies
12

PSC register agrees on
3 holdings

Company profile

SYNCONA PORTFOLIO LTD is a GUERNSEY entity; OpenRegistry holds no UK register profile for it.

Shareholders

Shares held by SYNCONA PORTFOLIO LTD in 15 UK companies

Ownership chain

5 companies across 2 layers beneath SYNCONA PORTFOLIO LTD

Official record

Browse the UK register

Shareholdings

Every company SYNCONA PORTFOLIO LTD appears on as a member, as filed. 15 of 15 are linked to their Companies House profile.

Company held	Status	Accounts	Share class	Shares	% of class	% of capital	Total % of capital	As of
SLINGSHOT THERAPEUTICS HOLDINGS LIMITED ▼15871470	Active	SMALL	ORDINARY	5,601,000	100.00%	100.00%	100.00%	2025-08-01
MOSAIC THERAPEUTICS LIMITED12780154	Active	SMALL	SERIES A2 PREFERRED	36,400,000	76.67%	58.39%	70.16%	2025-07-29
MOSAIC THERAPEUTICS LIMITED12780154	Active	SMALL	SERIES A1 PREFERRED	7,333,333	100.00%	11.76%	70.16%	2025-07-29
KESMALEA THERAPEUTICS LIMITED12961631	Active	SMALL	SERIES A PREFERRED	20,000,000	80.00%	61.13%	61.13%	2025-10-19
RE-AIM THERAPEUTICS LTD15689618	Active	SMALL	SERIES SEED	138,461	64.29%	42.05%	42.05%	2026-04-28
QUELL THERAPEUTICS LIMITED11890040	Active	FULL	SERIES A PREFERRED	45,171,429	97.14%	27.18%	35.13%	2026-04-28
QUELL THERAPEUTICS LIMITED11890040	Active	FULL	SERIES B PREFERRED	13,227,513	13.96%	7.96%	35.13%	2026-04-28
OMASS THERAPEUTICS LIMITED10028228	Active	FULL	SERIES A	20,299,496	63.59%	22.52%	32.25%	2026-03-12
OMASS THERAPEUTICS LIMITED10028228	Active	FULL	SERIES B	8,771,929	17.54%	9.73%	32.25%	2026-03-12
BIOMODAL LIMITED08005377	Active	GROUP	ORDINARY	766,729	20.68%	2.86%	2.86%	2026-03-26
SWANBIO THERAPEUTICS LIMITED10942620	Active	TOTAL EXEMPTION FULL	SERIES A PREFERRED	0				2024-08-31
SWANBIO THERAPEUTICS LIMITED10942620	Active	TOTAL EXEMPTION FULL	SERIES B PREFERRED	0				2024-08-31
RESOLUTION THERAPEUTICS LIMITED11112568	Active	GROUP	SERIES B (T1)	25,648,668				2026-01-31
			SERIES A PREFERRED	37,942,026
			SERIES B (T2)	31,280,716
PURESPRING THERAPEUTICS LIMITED12543677	Active	SMALL	SERIES B1	10,805,675				2026-03-31
			SERIES B2	24,843,892
			DEFERRED	100
			SERIES A PREFERRED	35,100,000
FORCEFIELD THERAPEUTICS LIMITED12983133	Active	SMALL	SERIES SEED PREFERRED	5,500,000				2025-10-21
			DEFERRED	100
			SERIES A1 PREFERRED	1,839,081
GYROSCOPE THERAPEUTICS HOLDINGS LIMITED ▼13086765	Active	DORMANT	SERIES C2 PREFERRED	0				2022-12-16
			B ORDINARY	0
			SERIES A PREFERRED	0
			SERIES B PREFERRED	0
			SERIES C1 PREFERRED	0
BEACON THERAPEUTICS HOLDINGS LIMITED ▼14303840	Active	GROUP	SERIES B1 PREFERRED	11,138,143				2025-08-17
			ORDINARY	8,000,000
			SERIES A PREFERRED	75,000,000
			SERIES B2 PREFERRED	10,676,987
YELLOWSTONE BIOSCIENCES LIMITED14606478	Active	SMALL	SERIES A	16,500,000				2025-01-19
YELLOWSTONE BIOSCIENCES LIMITED14606478	Active	SMALL	ORDINARY	900,000				2025-01-19
SPUR THERAPEUTICS HOLDINGS LIMITED ▼15295548	Active	GROUP	SERIES B PREFERRED	79,608,244				2025-11-19
SPUR THERAPEUTICS HOLDINGS LIMITED ▼15295548	Active	GROUP	SERIES A PREFERRED	116,385,757				2025-11-19

Ownership structure below these holdings

5 further companies sit beneath this entity’s direct holdings, across 2 layers. Each is linked to its Companies House profile.

SLINGSHOT THERAPEUTICS HOLDINGS LIMITED15871470
- SLINGSHOT THERAPEUTICS LIMITED15877851 ORDINARY · 100.00%
- APINI THERAPEUTICS LIMITED13767202 SERIES A · 57.61%
GYROSCOPE THERAPEUTICS HOLDINGS LIMITED13086765
- GYROSCOPE THERAPEUTICS LIMITED10131257 ORDINARY
BEACON THERAPEUTICS HOLDINGS LIMITED14303840
- BEACON THERAPEUTICS LIMITED14426488 ORDINARY
SPUR THERAPEUTICS HOLDINGS LIMITED15295548
- SPUR THERAPEUTICS LIMITED09500073 ORDINARY

Related company owners

Corporate shareholders that hold shares in the same UK companies as SYNCONA PORTFOLIO LTD:

OXFORD SCIENCE ENTERPRISES PLC09093331 20 shared holdings
SECONDCIRCLE+ LIMITED09628661 16 shared holdings
BRITISH PATIENT CAPITAL LIMITED11271076 8 shared holdings
CAMBRIDGE ENTERPRISE LIMITED01069886 6 shared holdings
FOSUN INDUSTRIAL CO., LIMITED 5 shared holdings
OXFORD SCIENCE ENTERPRISES HOLDINGS II LIMITED16279473 4 shared holdings

Other corporate shareholders of comparable size registered in GUERNSEY:

MOULTON GOODIES LIMITEDOE001325 36 UK holdings
EQUIOM (GUERNSEY) LIMITEDOE009930 12 UK holdings
ANNACHA LIMITED 10 UK holdings
KREO HOLDINGS LTD 9 UK holdings

Every company on this page is identified by its original Companies House registration number, shown beside its name and repeated in the data-company-number attribute of the same element. A shareholder that does not resolve to a registered company carries no number.

▼ marks a holding that itself holds shares in further companies, so ownership continues below it.

“% of capital” is the entity’s share of issued capital by nominal value, the correct basis when a company has multiple share classes.

Figures are as filed on each company’s most recent confirmation statement; the “As of” column gives that statement date. Source: Companies House Free Company Data and CS01 confirmation statements.