AltMountain

Southfield Capital LP

Greenwich, CT · CRD 163023
Private equity manager

Southfield Capital LP is an SEC-registered investment adviser based in Greenwich, CT that reports managing 24 private funds on Form ADV, including 21 private equity funds. It reports $2.1 billion in regulatory assets under management. Its private funds hold $2.1 billion in gross assets.

Regulatory assets under management
$2.1 billionForm ADV Item 5.F
Gross assets of private funds
$2.1 billionAll private fund types, Form ADV
Private funds managed
24PE 21 · VC 0 · hedge 0
Employees
27Form ADV Item 5.A
Registration
SEC-registered adviserCRD 163023
Latest Form ADV
03/31/2026Disciplinary disclosures: none reported

Private equity funds filing Form D (2)

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 (15)

Fund
Gross assets
Minimum
Owners
Adviser
Southfield Capital III LP
Delaware, United StatesPrivate equity fund
Gross assets$381M
Minimum$400K
Owners44
AdviserSouthfield Capital LP
Southfield Protos Annex Fund, LP
Delaware, United StatesPrivate equity fund
Gross assets$303M
Minimum$200K
Owners21
AdviserSouthfield Capital LP
Southfield Freeze LP
Delaware, United StatesPrivate equity fund
Gross assets$271M
Minimum$104K
Owners42
AdviserSouthfield Capital LP
Southfield Mezzanine Capital II LP
Delaware, United StatesPrivate fund
Gross assets$167M
Minimum$100K
Owners35
AdviserSouthfield Capital LP
Southfield Capital II LP
Delaware, United StatesPrivate equity fund
Gross assets$166M
Minimum$250K
Owners42
AdviserSouthfield Capital LP
Southfield Mezzanine Capital LP
Delaware, United StatesPrivate fund
Gross assets$95.9M
Minimum$100K
Owners36
AdviserSouthfield Capital LP
Southfield Security Services Investment LP
Delaware, United StatesPrivate equity fund
Gross assets$74.7M
Minimum$2.7M
Owners4
AdviserSouthfield Capital LP
SMC Everside Wwlt LLC
Delaware, United StatesPrivate equity fund
Gross assets$280K
Minimum$131K
Owners3
AdviserSouthfield Capital LP
SC III Alba Blocked Feeder LP
Delaware, United StatesPrivate equity fund
Gross assets$0
Minimum$650K
Owners14
AdviserSouthfield Capital LP
SC III Fastlane Blocked Feeder LP
Delaware, United StatesPrivate equity fund
Gross assets$0
Minimum$650K
Owners14
AdviserSouthfield Capital LP
SC III Fastlane Unblocked Feeder LP
Delaware, United StatesPrivate equity fund
Gross assets$0
Minimum$400K
Owners30
AdviserSouthfield Capital LP
Southfield Protos Annex Aggregator LLC
Delaware, United StatesPrivate equity fund
Gross assets$0
MinimumNone set
Owners3
AdviserSouthfield Capital LP
SC III Alba LP
Delaware, United StatesPrivate equity fund
Gross assets$0
Minimum$400K
Owners44
AdviserSouthfield Capital LP
SC III Fastlane LP
Delaware, United StatesPrivate equity fund
Gross assets$0
Minimum$400K
Owners44
AdviserSouthfield Capital LP
SC III Alba Unblocked Feeder LP
Delaware, United StatesPrivate equity fund
Gross assets$0
Minimum$400K
Owners30
AdviserSouthfield Capital LP

As reported in the adviser's Form ADV filed May 1, 2024. Funds also listed from Form D are shown above.

Fund vehicles: feeder funds and single-deal vehicles (2)

Fund
Gross assets
Minimum
Owners
Adviser
SC III Fastlane Co-Invest LP
Delaware, United StatesPrivate equity fund
Gross assets$23.7M
Minimum$200K
Owners1
AdviserSouthfield Capital LP
Southfield Alba Co-Invest LP
Delaware, United StatesPrivate equity fund
Gross assets$17.5M
MinimumNone set
Owners2
AdviserSouthfield Capital LP

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