Ardsley Partners

Hedge Fund SEC-registered adviser

Legal name: Ardsley Advisory Partners LP

Norwalk, CT Website

AUM

$1.6B
Regulatory AUM

Private funds

6
Hedge Fund 6

Private fund assets

$830.4M
Gross asset value

Employees

11

Last Form D raise

Nov 2025
Most recent fund filing

From SEC Form ADV filing (filed May 6, 2026). View on SEC

People(2)

Owners and executive officers named on the firm's SEC Form ADV.

P
Philip Hempleman
Managing Member, Ardsley Advisory Partners GP
Source: SEC Form ADV
S
Spencer Hempleman
Managing Member, Ardsley Advisory Partners GP
Source: SEC Form ADV

Funds(6)

Private funds reported on Form ADV, with amounts raised from the funds' SEC Form D filings.

FundTypeGross assetsRaised (Form D)InvestorsLast Form DRecency
Ardsley Partners Advanced Healthcare Fund, L.P.Hedge Fund$332.4M$285.6M4Nov 2025Warm
Ardsley Sustainable Opportunities Fund, L.P.Hedge Fund$309.6M$98.2M34Nov 2025Warm
Ardsley World Information Technology Fund, L.P.Hedge Fund$108.5M$76.1M6Nov 2025Warm
Ardsley Duckdive Fund LPHedge Fund$25.6M$17.1M6Nov 2025Warm
Ardsley World Information Technology Offshore Fund LTD.Hedge Fund$7.6M$76.1M6Nov 2025Warm
Ardsley Partners Fund II, LPHedge Fund$54.3M———

Board seats

Companies whose SEC Form D filings name one of this firm's people as a director, matched by name and office ZIP code.

No board seats matched from SEC filings yet.

Regulatory identifiers

CRD number
301116
SEC file number
801-114966
CIK
900529

Sources