Firms, funds, partners, companies and rounds from sworn filings, firm sites and announcements, kept as a graph with a date and a source on every edge. Facts, inferences and estimates are labelled as such. A fund target is never a close, GAV is never dry powder, and a round size is never an investor’s check.

Firms / Abingworth LLP

Abingworth LLP

Micro VC · probableLondonabingworth.comSEC exempt reporting adviserone firm, 2 filing advisers

This firm files as 2 advisers on abingworth.com: Abingworth Management Inc.. Each keeps its own CRD, funds and filings; the grouping is the website each swore to on Form ADV and is recomputed every pass.

We are Abingworth, a trans-atlantic bio-science investment firm with a deep understanding of both the science and markets we invest in.

venture manager, reported GAV $0.0M across 1 vehicles

Importance
27
moderate
Active deployment
4
low
Emerging
0
low
Completeness
69
high
Freshness
100
high
Research priority
5
low
Identity and regulatory footprint
Headquarters
London, United Kingdomadviserinfo.sec.gov
Office address
38 JERMYN STREET, London, SW1Y 6DNadviserinfo.sec.gov
Business phone
+44 207 534 1500adviserinfo.sec.gov
Website
HTTP://WWW.ABINGWORTH.COM
SEC adviser type
exempt reporting adviseradviserinfo.sec.gov
SEC exemption claimed
unknown
Latest Form ADV
Sep 28, 2015
Private funds reported
12 (11 venture capital funds)adviserinfo.sec.gov
Private fund gross assets
$883Madviserinfo.sec.govreported GAV of the funds, the adviser's own number; not fund size, not dry powder
Owners on Schedule A
Bigham Advisory Services Limited (Member), NA; Macquitty Advisory Services Limited (Member), NA; Abingworth Management Holdings Limited (Owner), E; Abingworth Management Limited (Corporate Member), C
business email
info@abingworth.comabingworth.compublished by the subject
business phone
+44 207 534 1500adviserinfo.sec.govpublished by the subject
Stated thesis versus observed behaviour
1 observed deals
Stated (the firm’s website)
Sectors
biotech, media
Stages
series a, early
Geography
new york
Check size
not stated; DFX does not estimate checks from round sizes
Observed (from deals on record)
Stage at participation: no observed deals yet
Stage at first entry: no observed deals yet
Sectors
unknown 100%
lead rate n/afollow-on rate n/anew logos, 12 months 1
Funds and vehicles
1 reported
VehicleTypeVintageLifecycleReported GAVOwnersForm D soldLatest Form D
Abingworth Bioventures Iia LPFundunknownUnknown$22,000
Sep 28, 2015
31unknownunknown
GAV is the gross asset value the adviser reported on Form ADV for the vehicle, never the fund’s committed size and never dry powder. Form D sold is the amount sold as of the latest filing, never a final close.
Investment team
10 current, 0 departed
David Frederick James Leathers
Owner · since Aug 1, 1989
Partner
FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Jonathan James Macquitty
Owner · since Dec 1, 2012
Partner
FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Joseph Anderson
Partner · since Mar 1, 2008
Partner
FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Konrad Hans Vonemster
Partner · since Jan 1, 2015
Partner
FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Michael Francis Bigham
Owner · since Dec 1, 2012
Partner
FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Quentin Lionel Genghis Lloyd-Harris
Partner · since Mar 1, 2008
Partner
FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Stephen William Bunting
Owner · since Aug 1, 1989
Partner
FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Timothy John Haines
Partner · since Mar 1, 2008
Partner
FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
James Foster Abell
Partner And Cfo · since Jun 1, 2006
Platform and operations
FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
John Grayson Heard
Partner/Cco · since Jul 1, 2014
Platform and operations
FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Investments on record
1 edges, 1 companies, 0 partner-attributed
CompanyRoundRolePartnerRound sizeThis investorDateSource
Etherportfolio listingunknownunknownunknownunknownSep 16, 2026Fact Venture organization websites (about, team, portfolio, thesis, news pages)
“This investor” is the amount disclosed for this investor alone; it is unknown unless a source said it. The round size is the whole round.
Co-investors
1 relationships from shared deals, counted for the whole firm
SV Health Investors 1 shared · one time
Limited partners
0 disclosed
No LP commitment on record. An LP edge needs a public disclosure with a quote: a pension report (see Limited partners for the plans read), a fund announcement naming the LP, or a Form ADV owner. The fund page carries the LP’s reported performance.
Timeline
14 dated events
  1. Jan 1, 2015
    Konrad Hans Vonemster joined Schedule A of Abingworth LLP as Partner
    Person joinedPeopleFactKonrad Hans VonemsterSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  2. Jul 1, 2014
    John Grayson Heard joined Schedule A of Abingworth LLP as Partner/Cco
    Person joinedPeopleFactJohn Grayson HeardSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  3. Sep 27, 2012
    Abingworth Bioventures VI LP first reported on Form ADV by Abingworth LLP (Venture Capital Fund)
    Fund first reported on Form ADVFundsFactAbingworth Bioventures VI LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  4. Mar 30, 2012
    Abingworth Bioventures Iiia LP first reported on Form ADV by Abingworth LLP (Venture Capital Fund), GAV $55,434,000
    Fund first reported on Form ADVFundsFactAbingworth Bioventures Iiia LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  5. Mar 30, 2012
    Abingworth Bioventures Iiib LP first reported on Form ADV by Abingworth LLP (Venture Capital Fund), GAV $33,840,000
    Fund first reported on Form ADVFundsFactAbingworth Bioventures Iiib LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  6. Mar 30, 2012
    Abingworth Bioventures Iiic LP first reported on Form ADV by Abingworth LLP (Venture Capital Fund), GAV $20,269,000
    Fund first reported on Form ADVFundsFactAbingworth Bioventures Iiic LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  7. Mar 30, 2012
    Abingworth Bioventures III Executives LP first reported on Form ADV by Abingworth LLP (Venture Capital Fund), GAV $829,000
    Fund first reported on Form ADVFundsFactAbingworth Bioventures III Executives LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  8. Mar 30, 2012
    Abingworth LLP first filed Form ADV (ERA)
    First SEC adviser filingOrganizationFactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  9. Mar 30, 2012
    Abingworth Bioventures IV Executives LP first reported on Form ADV by Abingworth LLP (Venture Capital Fund), GAV $1,510,000
    Fund first reported on Form ADVFundsFactAbingworth Bioventures IV Executives LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  10. Mar 30, 2012
    Abingworth Bioventures V LP first reported on Form ADV by Abingworth LLP (Venture Capital Fund), GAV $705,934,470
    Fund first reported on Form ADVFundsFactAbingworth Bioventures V LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  11. Mar 30, 2012
    Abingworth Bioventures V Co-Invest Growth Equity Fund LP first reported on Form ADV by Abingworth LLP (Venture Capital Fund), GAV $166,414,740
    Fund first reported on Form ADVFundsFactAbingworth Bioventures V Co-Invest Growth Equity Fund LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  12. Mar 30, 2012
    Abingworth Bioventures IV LP first reported on Form ADV by Abingworth LLP (Venture Capital Fund), GAV $204,286,000
    Fund first reported on Form ADVFundsFactAbingworth Bioventures IV LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  13. Mar 30, 2012
    Abingworth Bioventures II Sicav (in Voluntary Liquidation) first reported on Form ADV by Abingworth LLP (Venture Capital Fund), GAV $20,134,024
    Fund first reported on Form ADVFundsFactAbingworth Bioventures II Sicav (in Voluntary Liquidation)SEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  14. Mar 30, 2012
    Abingworth Bioventures Iia LP first reported on Form ADV by Abingworth LLP (Venture Capital Fund), GAV $5,215,000
    Fund first reported on Form ADVFundsFactAbingworth Bioventures Iia LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Classification history
  1. Sep 12, 2026
    Micro VC (probable, 80%, cls-1)
    venture manager, reported GAV $0.0M across 1 vehicles
Evidence
34 observations from 2 sources
Every observation behind this profile, with its source, date and class
FactValueEffectiveClassSource
SEC adviser typeexempt_reporting_adviserSep 28, 2015FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
First Form ADV filing2012-03-30Sep 28, 2015FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Adv history loadedadv-hist-1Sep 12, 2026FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Latest Form ADV filing2015-09-28Sep 28, 2015FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Venture share of reported funds1Sep 28, 2015FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Business phone+44 207 534 1500Sep 28, 2015FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Contact page urlhttps://www.abingworth.com/contact
“contact page linked from the home page”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
DescriptionWe are Abingworth, a trans-atlantic bio-science investment firm with a deep understanding of both the science and markets we invest in.
“meta description”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
DescriptionWe are Abingworth, a trans-atlantic bio-science investment firm with a deep understanding of both the science and markets we invest in.
“meta description”
Sep 13, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
HeadquartersLondon, United KingdomSep 28, 2015FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Office address38 JERMYN STREET, London, SW1Y 6DNSep 28, 2015FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Legal formLimited Liability PartnershipSep 28, 2015FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Portfolio pagehttps://www.abingworth.com/portfolio
“1 entries read”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Portfolio pagehttps://www.abingworth.com/portfolio
“1 entries read”
Sep 13, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Private funds reported12Sep 28, 2015FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Private fund gross assets (reported)$883MSep 28, 2015FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Stated geographynew york
“geography words on the home page”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Stated geographynew york
“geography words on the home page”
Sep 13, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Stated sectorsbiotech,media
“sector words on the home page”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Stated sectorsbiotech,media
“sector words on the home page”
Sep 13, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Stated stagesseries_a,early
“stage words on the home page”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Stated stagesseries_a,early
“stage words on the home page”
Sep 13, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Team pagehttps://www.abingworth.com/team
“0 name/title pairs read”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Team pagehttps://www.abingworth.com/team
“0 name/title pairs read”
Sep 13, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Venture funds reported11Sep 28, 2015FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
WebsiteHTTP://WWW.ABINGWORTH.COMSep 28, 2015FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Site titleLife Science Investing - Abingworth LLP
“title tag”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Site titleLife Science Investing - Abingworth LLP
“title tag”
Sep 13, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)