AltMountain

Flagship Pioneering, LLC

Cambridge, MA · CRD 161864
Venture capital managerExempt reporting

Flagship Pioneering, LLC is an exempt reporting adviser based in Cambridge, MA that reports managing 29 private funds on Form ADV, including 29 venture capital funds. Its private funds hold $13.4 billion in gross assets.

Regulatory assets under management
—Form ADV Item 5.F
Gross assets of private funds
$13.4 billionAll private fund types, Form ADV
Private funds managed
29PE 0 · VC 29 · hedge 0
Employees
—Form ADV Item 5.A
Registration
Exempt reporting adviserCRD 161864
Latest Form ADV
03/31/2026Disciplinary disclosures: none reported

Venture capital funds filing Form D (1)

Fund
First sale
Raised
Investors
Minimum
Offering
Flagship Pioneering Fund VIII, L.P.
Cambridge, MA506(c)
First saleNov 2023
Raised$2.6B
Investors109
Minimum$200K
Offering506(c)

Matched to this firm by the fund names and related persons in each Form D. The list may be incomplete.

Private funds reported on Form ADV (24)

Fund
Gross assets
Minimum
Owners
Adviser
Flagship Pioneering Fund VII, L.P.
Delaware, United StatesVenture capital fund
Gross assets$3.4B
Minimum$1.0M
Owners119
AdviserFlagship Pioneering, Inc.
Flagship Pioneering Fund VI, L.P.
Delaware, United StatesVenture capital fund
Gross assets$2.1B
Minimum$200K
Owners45
AdviserFlagship Pioneering, Inc.
Flagship Venturelabs VI LLC
Delaware, United StatesVenture capital fund
Gross assets$1.6B
MinimumNone set
Owners182
AdviserFlagship Pioneering, Inc.
Flagship Pioneering Fund VIII, L.P.
Delaware, United StatesVenture capital fund
Gross assets$1.5B
Minimum$500K
Owners69
AdviserFlagship Pioneering, Inc.
Flagship Pioneering Special Opportunities Fund II, L.P.
Delaware, United StatesVenture capital fund
Gross assets$855M
Minimum$500K
Owners61
AdviserFlagship Pioneering, Inc.
Flagship Ventures Fund IV, L.P.
Delaware, United StatesVenture capital fund
Gross assets$816M
Minimum$250K
Owners31
AdviserFlagship Pioneering, Inc.
Flagship Ventures Fund V, L.P.
Delaware, United StatesVenture capital fund
Gross assets$489M
Minimum$250K
Owners39
AdviserFlagship Pioneering, Inc.
FPN III, L.P.
CanadaVenture capital fund
Gross assets$350M
Minimum$3.5M
Owners3
AdviserFlagship Pioneering, Inc.
ET Fund
Delaware, United StatesVenture capital fund
Gross assets$280M
Minimum$140M
Owners3
AdviserFlagship Pioneering, Inc.
FPN II, L.P.
CanadaVenture capital fund
Gross assets$255M
Minimum$2.5M
Owners3
AdviserFlagship Pioneering, Inc.
Flagship Venturelabs V LLC
Delaware, United StatesVenture capital fund
Gross assets$251M
MinimumNone set
Owners94
AdviserFlagship Pioneering, Inc.
FPA, L.P.
CanadaVenture capital fund
Gross assets$250M
Minimum$2.5M
Owners3
AdviserFlagship Pioneering, Inc.
Nutritional Health Ltp Fund, L.P.
Delaware, United StatesVenture capital fund
Gross assets$249M
Minimum$140M
Owners2
AdviserFlagship Pioneering, Inc.
Flagship Ventures V Agricultural Fund, L.P.
Delaware, United StatesVenture capital fund
Gross assets$184M
Minimum$25.0M
Owners2
AdviserFlagship Pioneering, Inc.
Flagship Ventures Opportunities Fund I, L.P.
Delaware, United StatesVenture capital fund
Gross assets$168M
Minimum$250K
Owners27
AdviserFlagship Pioneering, Inc.
Flagship Ventures Fund IV-Rx, L.P.
Delaware, United StatesVenture capital fund
Gross assets$158M
Minimum$30.0M
Owners2
AdviserFlagship Pioneering, Inc.
FPN, L.P.
CanadaVenture capital fund
Gross assets$140M
Minimum$1.5M
Owners3
AdviserFlagship Pioneering, Inc.
Flagship Labs VII LLC
Delaware, United StatesVenture capital fund
Gross assets$107M
MinimumNone set
Owners248
AdviserFlagship Pioneering, Inc.
Nutritional Health Disruptive Innovation Fund, L.P.
Delaware, United StatesVenture capital fund
Gross assets$53.3M
Minimum$85.0M
Owners2
AdviserFlagship Pioneering, Inc.
Flagship Ventures Cnyelsf Fund, L.P.
Delaware, United StatesVenture capital fund
Gross assets$23.9M
Minimum$7.5M
Owners4
AdviserFlagship Pioneering, Inc.
Flagship Ventures Fund 2007, L.P.
Delaware, United StatesVenture capital fund
Gross assets$23.2M
Minimum$100K
Owners35
AdviserFlagship Pioneering, Inc.
Flagship Venturelabs IV LLC
Delaware, United StatesVenture capital fund
Gross assets$12.8M
MinimumNone set
Owners13
AdviserFlagship Pioneering, Inc.
Flagship V Venturelabs Rx Fund, L.P.
Delaware, United StatesVenture capital fund
Gross assets$11.8M
Minimum$50.0M
Owners2
AdviserFlagship Pioneering, Inc.
Flagship Ventures Fund 2004, L.P.
Delaware, United StatesVenture capital fund
Gross assets$166K
Minimum$50K
Owners33
AdviserFlagship Pioneering, Inc.

As reported in the adviser's Form ADV filed Mar 29, 2024. Funds also listed from Form D are shown above.

Fund vehicles: feeder funds and single-deal vehicles (1)

Fund
Gross assets
Minimum
Owners
Adviser
Nutritional Health Side Fund, L.P.
Delaware, United StatesVenture capital fund
Gross assets$230K
Minimum$20.0M
Owners2
AdviserFlagship Pioneering, Inc.

Feeder funds invest through a master fund; single-deal vehicles (SPVs, co-investments, series) hold one investment.

From SEC filings. Firm data comes from the SEC's Form ADV data. AltMountain has not verified this information, and it is not an offer, solicitation or recommendation. Full disclosures