Ono Venture Investment Fund 1 takes 11.2% stake in Harness Therapeutics

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Ono Venture Investment Fund 1, L.P. has entered the register of Harness Therapeutics, a neurodegenerative therapies firm, with 15,001 Series A1 preferred shares, representing an 11.2% holding. The overall share register expanded materially, suggesting fresh funding. The filing was dated 2 September 2026 and covers the multi-year period from 21 August 2024 to 21 August 2026.

Shareholder data

Source: Companies House confirmation statement (CS01) — period to , filed .

Changes in this confirmation statement

TypeShareholderSharesChangeShare classes
New shareholderONO VENTURE INVESTMENT FUND 1, L.P.15,001
SERIES A1 PREFERRED 15,001
IncreasedDEMENTIA DISCOVERY GENERAL PARTNER LLP, ACTING AS GENERAL PARTNER OF DEMENTIA DISCOVERY GP LP, ACTING AS GENERAL PARTNER OF DEMENTIA DISCOVERY L.P.52,698+764%
SERIES A1 PREFERRED 33,173
SERIES A2 PREFERRED 13,428
SEED PREFERRED 4,052
ORDINARY 2,045
IncreasedTAKEDA VENTURES, INC.47,590+544%
DEFERRED 40,601
ORDINARY 6,989
IncreasedEPIDAREX CAPITAL III UK, LP14,538+370%
DEFERRED 10,300
ORDINARY 4,238
IncreasedDDF PARALLEL LLP3,357+765%
SERIES A1 PREFERRED 2,112
SERIES A2 PREFERRED 857
SEED PREFERRED 258
ORDINARY 130

Current shareholders (5)

ShareholderTotal sharesShare classes
DEMENTIA DISCOVERY GENERAL PARTNER LLP, ACTING AS GENERAL PARTNER OF DEMENTIA DISCOVERY GP LP, ACTING AS GENERAL PARTNER OF DEMENTIA DISCOVERY L.P.52,698
ORDINARY 2,045
SEED PREFERRED 4,052
SERIES A1 PREFERRED 33,173
SERIES A2 PREFERRED 13,428
TAKEDA VENTURES, INC.47,590
DEFERRED 40,601
ORDINARY 6,989
ONO VENTURE INVESTMENT FUND 1, L.P.15,001
SERIES A1 PREFERRED 15,001
EPIDAREX CAPITAL III UK, LP14,538
DEFERRED 10,300
ORDINARY 4,238
DDF PARALLEL LLP3,357
ORDINARY 130
SEED PREFERRED 258
SERIES A1 PREFERRED 2,112
SERIES A2 PREFERRED 857

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