PartnerFacts
Data last updated: Oct 23, 2026, 5:45 PM ETLatest filing: Oct 22, 2026Now: Oct 24, 2026, 10:24 AM ET

Sponsor Check › Sponsor group

A

Ardsley

One sponsor team, 8 deal companies · Norwalk, CT

Grouped because: 3 shared people, 4 shared management entities, same business address (5 issuers), similar issuer names (8) (automatic match from the filings) · not the same sponsor?

8deal companies
$599.9Mreported sold
125investors
78Form D filings
2010–2025active
0new, last 12 mo
Follow this sponsor groupLook further ↓

Data last updated Oct 23, 2026, 5:45 PM ET · Latest filing in this group Nov 17, 2025 · Courts (RECAP) last checked: Oct 24, 2026, 2:16 AM ET · SEC enforcement last checked: covered by the index scan as of Oct 24, 2026, 2:50 AM ET

The short version

Ardsley is a sponsor group of 8 issuers that PartnerFacts links to one sponsor (shared people, shared management entity, same business address, similar issuer names; automatic match from the filings), filing 78 Form D filings between Mar 2010 and Nov 2025.

What this means One team, 8 deal companies, about 15 years of track record in SEC filings. We link the companies because the same people or address appear on their forms — tap "Request a correction" if that is wrong.

Combined reported sold: $599.9M to 125 investors (latest filing per issuer). Industries as reported: Pooled Investment Fund (8). Issuers are based in CT (8).

What this means $599.9M raised across the group, about $4.8M per investor. Amounts come from each company's latest Form D; they are what the sponsor reported, not audited figures.

Principal people: J. Ardsley Advisory Partners LP (8 issuers, promoter, entity), J. Ardsley Partners I GP, LLC (8 issuers, executive officer, entity), Philip J. Hempleman (8 issuers, executive officer), Spencer Hempleman (8 issuers, executive officer), Ardsley Partners I Ardsley Partners I (2 issuers, executive officer) and 3 more.

What this means The person on the most companies is usually the one running the show; their page lists every deal.

Activity: 0 new offerings in the last 12 months; latest filing Nov 17, 2025.

What this means No new raise filed in the past year.

Public records searched: federal courts (CourtListener / RECAP), SEC enforcement releases, state securities regulators (AK, AL, AR, AZ, CA, CO, CT, DC, DE, FINRA, FL, GA, HI, ID, IL, KS, KY, LA, MA, MD, ME, MI, MO, MS, MT, NASAA, NC, ND, NH, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, WA, WI, WV, WY), property records (NYC, FL, IL and TX counties) — none found.

What this means Nothing turned up where we looked (4 sources). That does not prove there is nothing — it means none was found in those sources on that date.

We compared the newest 50 of 78 public filings for Ardsley and found 15 differences, 5 worth asking the sponsor about: 13 offerings reported less sold on a later filing than an earlier one; 11 offerings reported fewer investors on a later filing; and more below.

What this means These are differences between the sponsor's own SEC filings — both values, dates and sources are listed in Key records, section 4. Most have ordinary explanations; ask the sponsor.

What the community is saying

Community search for Ardsley has not run yet — it is joining a line of 53,433 names; searches run around the clock at the hosts' allowed rate. Searched so far: 641 names.

Community comments are quoted as written by their authors. Sources searched: Bing (site:reddit.com / site:biggerpockets.com) and Reddit's own search, plus DuckDuckGo/Brave/BiggerPockets search when they are answering.

Key records

Five things investors ask first. Items still in human review are counted, not shown.

1. Lawsuits

None found in sources searched — federal courts (CourtListener / RECAP), checked Oct 24, 2026

What was searched

Sources searched: CourtListener bulk data (RECAP dockets as of 2026-09-30; recall-first rule 10-24) — federal district + bankruptcy courts State courts: not covered (one-tap state court links under Look further). PACER: not searched. · Last checked Oct 24, 2026, 2:16 AM ET.

State courts: not covered (one-tap state court links under Look further). No state offers a lawful automated statewide source PartnerFacts can use today. Texas (re:SearchTX) terms prohibit storing results in a database open to third parties; New York (WebCivil) and Massachusetts (MassCourts) require a browser check that blocks scripted queries; California has no statewide index (58 county portals; Rule of Court 2.503 grants name-based access case by case); Florida, Utah and Illinois offer paid or partial access whose terms for automated use are unverified. Washington (dw.courts.wa.gov; bulk index reports under a JISC data-dissemination agreement), Delaware (CourtConnect; Court of Chancery not included) and Arizona (apps.azcourts.gov/publicaccess, which has an official channel to request high-volume access) are the candidates; PartnerFacts will request written permission before any automated search. Federal courts are searched through CourtListener / RECAP.

2. Regulatory actions

None found in sources searched — SEC enforcement releases (index scan as of Oct 24, 2026, 2:50 AM ET) · state securities regulators: 48 regulators (FINRA, NASAA, 37 states) — crawled Oct 24, 2026, 8:48 AM ET

What was searched

SEC enforcement searched: SEC litigation releases and administrative proceedings — respondent names in the sec.gov index titles (30,205 releases, 1995-09-19 to 2026-10-23); release text is read only to confirm a candidate. Names that appear only in the body of a release are not found. — Searched SEC litigation releases and administrative proceedings (1995→ / 2007→) (30,205 records as of Oct 24, 2026, 2:50 AM ET) — nothing matched Ardsley..

State securities regulators: Securities regulators searched (64,910 actions): FINRA (38,350 actions, 1995–2026), NASAA (31 actions, 2000–2026; listing starts 1997), AK Division of Banking and Securities (273 actions, 1971–2025), AL Securities Commission (880 actions, 2001–2026), AR Securities Department (1,305 actions, 1998–2026), AZ Corporation Commission Securities Division (411 actions, 2017–2026), CA DFPI (25 actions, 2007–2024; listing starts 2002 — 16 of 12,159 DFPI respondent pages read so far; sponsor-name matches are read first), CO Division of Securities (731 actions, 2001–2026; older years from the Internet Archive (snapshot of 2026-05-02)), CT Department of Banking Securities Division (940 actions, 2006–2026; older years from the Internet Archive (snapshot of 2026-04-22)), DC DISB Securities Bureau (25 actions, 2012–2026), DE DOJ Investor Protection Unit (257 actions, 1987–2026), FL Office of Financial Regulation (49 actions, 2018–2026), GA Secretary of State Securities Division (65 actions, 2015–2026; listing starts 2012), HI DCCA Securities Enforcement Branch (26 actions, 2012–2026), ID Department of Finance Securities Bureau (663 actions, 1994–2026), IL Secretary of State Securities Department (4,122 actions, 2003–2023), KS Insurance Department Securities Division (58 actions), KY Department of Financial Institutions (342 actions, 2005–2026), LA Office of Financial Institutions Securities Division (13 actions, 2010–2025; listing starts 2008), MA Secretary of the Commonwealth Securities Division (125 actions, 2012–2025; live site blocks automated access — loaded from the Internet Archive snapshot of 2026-02-04), MD Attorney General Securities Division (1,054 actions, 2004–2026), ME Office of Securities (539 actions, 2000–2026), MI LARA Corporations, Securities & Commercial Licensing Bureau (201 actions), MO Secretary of State Securities Division (919 actions, 1998–2026), MS Secretary of State Securities Division (209 actions, 1995–2026), MT Commissioner of Securities and Insurance (597 actions, 2000–2026), NC Secretary of State Securities Division (265 actions, 2004–2024), ND Securities Department (711 actions, 1990–2026; the regulator no longer publishes this list live — loaded from the Internet Archive snapshot of 2026-01-06), NH Bureau of Securities Regulation (402 actions, 2002–2026), NM Regulation and Licensing Department Securities Division (90 actions, 2010–2025), NV Secretary of State Securities Division (118 actions, 2018–2026), NY Attorney General Investor Protection Bureau (44 actions, 2012–2026), OH Division of Securities (327 actions, 1993–2006), OK Department of Securities (2,531 actions, 1998–2026), OR Division of Financial Regulation (589 actions, 1988–2026), PA Department of Banking and Securities (1,448 actions, 2008–2024; the regulator no longer publishes this list live — loaded from the Internet Archive snapshot of 2024-08-09), RI DBR Securities Division (98 actions, 2005–2025), SC Attorney General Securities Division (540 actions, 2006–2026), SD Division of Insurance – Securities Regulation (106 actions, 2017–2026), TN Department of Commerce and Insurance Securities Division (405 actions, 1992–2026), TX State Securities Board (936 actions, 1999–2026), UT Division of Securities (772 actions, 2000–2026; older years from the Internet Archive (snapshot of 2010-05-27)), VT DFR Securities Division (137 actions, 2010–2026), WA DFI (2,039 actions, 2001–2026), WI DFI Division of Securities (1,072 actions, 1998–2026), WV Securities Commission (State Auditor) (64 actions), WY Secretary of State Compliance Division (6 actions, 2016–2024) — last crawled Oct 24, 2026, 8:48 AM ET. No machine-readable public listing today for IA, IN, MN, NE, NJ, VA (see docs/state-regulators.md).

3. Bankruptcies

None found in sources searched — federal bankruptcy courts (CourtListener / RECAP), checked Oct 24, 2026

What was searched

Sources searched: Federal bankruptcy courts via CourtListener / RECAP archive (federal district courts, federal bankruptcy courts). State courts: not covered (one-tap state court links under Look further). PACER: not searched (RECAP only). · Last checked Oct 24, 2026, 2:16 AM ET.

State courts: not covered (one-tap state court links under Look further). No state offers a lawful automated statewide source PartnerFacts can use today. Texas (re:SearchTX) terms prohibit storing results in a database open to third parties; New York (WebCivil) and Massachusetts (MassCourts) require a browser check that blocks scripted queries; California has no statewide index (58 county portals; Rule of Court 2.503 grants name-based access case by case); Florida, Utah and Illinois offer paid or partial access whose terms for automated use are unverified. Washington (dw.courts.wa.gov; bulk index reports under a JISC data-dissemination agreement), Delaware (CourtConnect; Court of Chancery not included) and Arizona (apps.azcourts.gov/publicaccess, which has an official channel to request high-volume access) are the candidates; PartnerFacts will request written permission before any automated search. Federal courts are searched through CourtListener / RECAP.

4. Differences between public sources

No comparisons published

What is compared

No public statement by this sponsor group has been collected yet, so there is nothing to compare. Sources compared: the sponsor's own website (known from the issuer's own filings — Form C issuer website, EDGAR company profile — an approved profile claim or Form ADV Item 1.I of its matched adviser) · SEC Form D · SEC Form ADV (IAPD) · Internet Archive · No website is on file for this sponsor group yet.

15 differences found between the filings for Ardsley — 5 worth asking about (compared the newest 50 of 78 filings on Oct 24, 2026; older filings not covered)

Worth asking · Mar 14, 2018 – Nov 17, 2025

13 offerings reported less sold on a later filing than an earlier one

Amount sold went down between filings — Ardsley Sustainable Opportunities Fund, L.P. · Amount sold went down between filings — Ardsley Sustainable Opportunities Fund, L.P. · Amount sold went down between filings — Ardsley Partners Fund II, L.P. · Amount sold went down between filings — Ardsley Duckdive Fund, L.P. · Amount sold went down between filings — Ardsley Partners Advanced Healthcare Fund, L.P. · and 8 more

What this means Amounts sold normally only go up. Ask the sponsor what happened on each.

Form D/A (earlier) · Nov 18, 2024 ↗Form D/A (later) · Nov 17, 2025 ↗Ardsley Sustainable Opportunities Fund, L.P. — PartnerFacts page ↗Form D/A (earlier) · Nov 17, 2023 ↗
Sources
Worth asking · Mar 14, 2018 – Nov 18, 2024

11 offerings reported fewer investors on a later filing

Investor count went down between filings — Ardsley Sustainable Opportunities Fund, L.P. · Investor count went down between filings — Ardsley Partners Fund II, L.P. · Investor count went down between filings — Ardsley Partners Advanced Healthcare Fund, L.P. · Investor count went down between filings — Ardsley Partners Fund II, L.P. · Investor count went down between filings — Ardsley Sustainable Opportunities Fund, L.P. · and 6 more

What this means Investor counts normally only grow. Ask the sponsor what happened on each.

Form D/A (earlier) · Nov 17, 2023 ↗Form D/A (later) · Nov 18, 2024 ↗Ardsley Sustainable Opportunities Fund, L.P. — PartnerFacts page ↗Form D/A (earlier) · Nov 17, 2023 ↗
Sources
Worth asking · Feb 2, 2012 – Nov 19, 2018

Form D filed 2,482 days after the first sale — Ardsley Healthcare Fund, L.P.

The filing says the first sale was Feb 2, 2012. The Form D was filed Nov 19, 2018 — 2,482 days later. The rule: a Form D is generally due within 15 days after the first sale, so this one is 2,467 days past that.

What this means The notice went in months after money was taken in. Late notices are common and carry no penalty by themselves, but it is fair to ask the sponsor why the paperwork lagged.

Form D · Nov 19, 2018 ↗Ardsley Healthcare Fund, L.P. — PartnerFacts page ↗
Sources
Worth asking · Jun 1, 2017 – Nov 19, 2018

Form D filed 536 days after the first sale — Ardsley Conway Fund, L.P.

The filing says the first sale was Jun 1, 2017. The Form D was filed Nov 19, 2018 — 536 days later. The rule: a Form D is generally due within 15 days after the first sale, so this one is 521 days past that.

What this means The notice went in months after money was taken in. Late notices are common and carry no penalty by themselves, but it is fair to ask the sponsor why the paperwork lagged.

Form D · Nov 19, 2018 ↗Ardsley Conway Fund, L.P. — PartnerFacts page ↗
Sources
Worth asking · Nov 1, 2015 – Nov 19, 2018

Form D filed 1,114 days after the first sale — Ardsley World Information Technology Fund, L.P.

The filing says the first sale was Nov 1, 2015. The Form D was filed Nov 19, 2018 — 1,114 days later. The rule: a Form D is generally due within 15 days after the first sale, so this one is 1,099 days past that.

What this means The notice went in months after money was taken in. Late notices are common and carry no penalty by themselves, but it is fair to ask the sponsor why the paperwork lagged.

Form D · Nov 19, 2018 ↗Ardsley World Information Technology Fund, L.P. — PartnerFacts page ↗
Sources
Note · Jan 1, 2014 – Nov 18, 2024

No amendment in the last 12 months on an offering that may still be open — Ardsley Ridgecrest Partners Fund, L.P. (latest filing Nov 18, 2024)

The latest filing for this offering is dated Nov 18, 2024 (first sale Jan 1, 2014). It reports $30,271,215 sold of an indefinite amount offered. No later amendment is in our index as of Oct 24, 2026.

What this means SEC rules expect a yearly amendment while an offering is still going. The raise may simply have ended — a Form D does not say when it closed. Ask the sponsor whether the offering closed, when, and at what amount.

Form D/A · Nov 18, 2024 ↗Ardsley Ridgecrest Partners Fund, L.P. — PartnerFacts page ↗
Sources
Note · Feb 2, 2012 – Nov 20, 2020

No amendment in the last 12 months on an offering that may still be open — Ardsley Healthcare Fund, L.P. (latest filing Nov 20, 2020)

The latest filing for this offering is dated Nov 20, 2020 (first sale Feb 2, 2012). It reports $23,409,346 sold of an indefinite amount offered. No later amendment is in our index as of Oct 24, 2026.

What this means SEC rules expect a yearly amendment while an offering is still going. The raise may simply have ended — a Form D does not say when it closed. Ask the sponsor whether the offering closed, when, and at what amount.

Form D/A · Nov 20, 2020 ↗Ardsley Healthcare Fund, L.P. — PartnerFacts page ↗
Sources
Note · Jun 1, 2017 – Nov 21, 2019

No amendment in the last 12 months on an offering that may still be open — Ardsley Conway Fund, L.P. (latest filing Nov 21, 2019)

The latest filing for this offering is dated Nov 21, 2019 (first sale Jun 1, 2017). It reports $14,025,000 sold of an indefinite amount offered. No later amendment is in our index as of Oct 24, 2026.

What this means SEC rules expect a yearly amendment while an offering is still going. The raise may simply have ended — a Form D does not say when it closed. Ask the sponsor whether the offering closed, when, and at what amount.

Form D/A · Nov 21, 2019 ↗Ardsley Conway Fund, L.P. — PartnerFacts page ↗
Sources
Note · Mar 20, 2015 – Nov 19, 2018

J. Ardsley Advisory Partners LP is written 2 different ways on the filings

listed as "Ardsley Advisory Partners" on 9 filings (from Mar 20, 2015), and "Ardsley Advisory Partners LP" on 50 filings (from Nov 19, 2018).

What this means Same person, written differently — a middle name or suffix left off, or spelled another way. It is normal, but check that the full legal name matches your subscription documents.

Form D/A · Mar 20, 2015 ↗Form D/A · Nov 19, 2018 ↗J. Ardsley Advisory Partners LP — PartnerFacts page ↗
Sources
Note · Nov 18, 2024 – Nov 17, 2025

5 address changes between filings

Address moved from Stamford, CT to Norwalk, CT — Ardsley World Information Technology Fund, L.P. · Address moved from Stamford, CT to Norwalk, CT — Ardsley Duckdive Fund, L.P. · Address moved from Stamford, CT to Norwalk, CT — Ardsley Partners Advanced Healthcare Fund, L.P. · Address moved from Stamford, CT to Norwalk, CT — Ardsley Sustainable Opportunities Fund, L.P. · Address moved from Stamford, CT to Norwalk, CT — Ardsley Partners Fund II, L.P.

What this means Businesses move. If you were told one city and the forms say another, ask which is current.

Form D/A · Nov 18, 2024 ↗Form D/A · Nov 17, 2025 ↗Ardsley World Information Technology Fund, L.P. — PartnerFacts page ↗Form D/A · Nov 18, 2024 ↗
Sources
Note · Nov 18, 2024

Address on file is a registered agent / shared office — Ardsley Ridgecrest Partners Fund, L.P.

The latest filing lists C/O Ardsley Partners I Gp, Llc, 262 Harbor Drive, Stamford, CT. That address is used by 8 issuers in our index (8 issuers in 6 unrelated clusters).

What this means Many small companies use a registered agent's address — it is legal and common. It means the Form D address is not where the team works. Ask where the business operates and who runs it day to day.

Form D/A · Nov 18, 2024 ↗Ardsley Ridgecrest Partners Fund, L.P. — PartnerFacts page ↗
Sources
Note · Nov 20, 2020

Address on file is a registered agent / shared office — Ardsley Healthcare Fund, L.P.

The latest filing lists C/O Ardsley Partners I Gp, Llc, 262 Harbor Drive, Stamford, CT. That address is used by 8 issuers in our index (8 issuers in 6 unrelated clusters).

What this means Many small companies use a registered agent's address — it is legal and common. It means the Form D address is not where the team works. Ask where the business operates and who runs it day to day.

Form D/A · Nov 20, 2020 ↗Ardsley Healthcare Fund, L.P. — PartnerFacts page ↗
Sources
Note · Nov 21, 2019

Address on file is a registered agent / shared office — Ardsley Conway Fund, L.P.

The latest filing lists C/O Ardsley Partners I Gp, Llc, 262 Harbor Drive, Stamford, CT. That address is used by 8 issuers in our index (8 issuers in 6 unrelated clusters).

What this means Many small companies use a registered agent's address — it is legal and common. It means the Form D address is not where the team works. Ask where the business operates and who runs it day to day.

Form D/A · Nov 21, 2019 ↗Ardsley Conway Fund, L.P. — PartnerFacts page ↗
Sources
Note · Mar 11, 2010 – Nov 17, 2025

Issuer used a different name before — Ardsley Sustainable Opportunities Fund, L.P.

SEC records list prior names for this filer: Ardsley Partners Renewable Energy Fund, L.P.. The current name on file is "Ardsley Sustainable Opportunities Fund, L.P.".

What this means A name change is normal, but your documents may show the old name. Match the CIK, not just the name.

EDGAR filer page ↗Ardsley Sustainable Opportunities Fund, L.P. — PartnerFacts page ↗
Sources
Note · Mar 11, 2010 – Nov 17, 2025

Issuer used a different name before — Ardsley Partners Fund II, L.P.

SEC records list prior names for this filer: ARDSLEY PARTNERS FUND II L P. The current name on file is "Ardsley Partners Fund II, L.P.".

What this means A name change is normal, but your documents may show the old name. Match the CIK, not just the name.

EDGAR filer page ↗Ardsley Partners Fund II, L.P. — PartnerFacts page ↗
Sources
What is compared

What is compared: every Form D and D/A we hold for this subject, side by side — filing dates vs. first-sale dates (the 15-day rule), amendment timing on open offerings (the yearly-amendment expectation), amounts sold, investor counts, offering amounts and minimums across amendments, industry and size bands, addresses, how each person's name and role is written, paid sellers' CRD numbers, and (for groups) where the member companies were formed and sit. Everything is as filed by the issuer; the SEC does not check it. Differences are common and usually have ordinary explanations — we show both values, the dates, and the source so you can ask. We compared the newest 50 of 78 filings (work cap); older filings are not covered here. As of Oct 24, 2026.

5. Money to insiders

None reported on 8 offerings — no sales commissions, finder's fees or proceeds to insiders

Per-offering detail
Offering (latest filing)Sales commissionsFinder's feesTo insidersPaid to sell itSource
Nov 17, 2025 D/A
Ardsley Sustainable Opportunities Fund, L.P.
File 021-139490
$0$0$0
Customary advisory fees will be paid by the Issuer to the Investment Manager as provided for in the Issuer's offering materials.
None listed on this filingEDGAR ↗
Nov 17, 2025 D/A
Ardsley Partners Fund II, L.P.
File 021-83604-8N
$0$0$0
Customary advisory fees will be paid by the Issuer to the Investment Manager as provided for in the Issuer's offering materials.
None listed on this filingEDGAR ↗
Nov 17, 2025 D/A
Ardsley Partners Advanced Healthcare Fund, L.P.
File 021-259166
$0$0$0
Customary advisory fees will be paid by the Issuer to the Investment Manager as provided for in the Issuer's offering materials.
None listed on this filingEDGAR ↗
Nov 17, 2025 D/A
Ardsley Duckdive Fund, L.P.
File 021-264092
$0$0$0
Customary advisory fees will be paid by the Issuer to the Investment Manager as provided for in the Issuer's offering materials.
None listed on this filingEDGAR ↗
Nov 17, 2025 D/A
Ardsley World Information Technology Fund, L.P.
File 021-326100
$0$0$0
Customary advisory fees will be paid by the Issuer to the Investment Manager as provided for in the Issuer's offering materials.
None listed on this filingEDGAR ↗
Nov 18, 2024 D/A
Ardsley Ridgecrest Partners Fund, L.P.
File 021-213953
$0$0$0
Customary advisory fees will be paid by the Issuer to the Investment Manager as provided for in the Issuer's offering materials.
None listed on this filingEDGAR ↗
Nov 20, 2020 D/A
Ardsley Healthcare Fund, L.P.
File 021-326117
$0$0$0
Customary advisory fees will be paid by the Issuer to the Investment Manager as provided for in the Issuer's offering materials.
None listed on this filingEDGAR ↗
Nov 21, 2019 D/A
Ardsley Conway Fund, L.P.
File 021-326110
$0$0$0
Customary advisory fees will be paid by the Issuer to the Investment Manager as provided for in the Issuer's offering materials.
None listed on this filingEDGAR ↗

Counts come from Form D Items 12–15 on the filings in our index (latest filing per offering; one offering = one SEC file number; an amendment updates its offering rather than adding one). "To insiders" = gross proceeds used for payments to executive officers, directors or promoters. "—" = not reported on that filing. Amounts marked (est.) were reported as estimates. "Paid to sell it" = sales compensation recipients named on that filing (Item 12), each linked to FINRA BrokerCheck when a CRD number is reported.

Counted across all 8 issuers in this group — every filing in our index, latest filing per offering (SEC file number).

Property records 0 documents · 0 ownership records · last checked Oct 24, 2026, 10:16 AM ET · NYC and Cook County lookup still to run

0 recorded documents and 0 ownership records matched to Ardsley in the sources searched.

Not found in sources searched as of Oct 24, 2026, 10:16 AM ET: Hillsborough County FL Clerk of Court Official Records daily index (publicrec.hillsclerk.com D/P/M files), 2 daily files (Oct 14, 2026 to Oct 15, 2026) — loaded Oct 23, 2026, 8:59 PM ET; Harris County TX (HCAD ownership rolls 2005–2026) — 1,032,426 records, loaded Oct 24, 2026, 8:00 AM ET; Dallas County TX (DCAD ownership rolls 2021–2027) — 285,535 records, loaded Oct 24, 2026, 8:20 AM ET; Hillsborough County FL (FL DOR 2026 ownership roll + Clerk recorded-document index Oct 14, 2026 to Oct 15, 2026), Miami-Dade County FL (FL DOR 2026 ownership roll), Broward County FL (FL DOR 2026 ownership roll), Palm Beach County FL (FL DOR 2026 ownership roll) — 514,336 records, loaded Oct 24, 2026, 8:25 AM ET; King County WA (Assessor sale records 0000-00-00–2026-10-14; no owner-of-record names published) — 538,619 records, loaded Oct 24, 2026, 8:27 AM ET; Cook County IL (Assessor sale records 1982–2026 + ownership rolls 1999–2026) — 1,263,035 records, loaded Oct 24, 2026, 9:34 AM ET. Still to be looked up for this group: NYC ACRIS via NYC Open Data (Real Property Parties 636b-3b5g, Master bnx9-e6tj, Legals 8h5j-fqxa, Document Control Codes 7isb-wh4c) · NYC PLUTO ownership via NYC Open Data (64uk-42ks) · Cook County IL Assessor via Cook County Open Data (Parcel Sales wvhk-k5uv; Parcel Addresses 3723-97qp). Records in other counties, and recorder indexes we do not yet cover, were not searched.

Property records coverage: New York City (ACRIS recorded documents and PLUTO ownership, looked up per issuer when its page is viewed; re-checked when the page is viewed again more than 30 days after the last check); Harris County TX (ownership only, no deed, mortgage or sale records; HCAD ownership rolls 2005–2026); Dallas County TX (ownership only, no deed, mortgage or sale records; DCAD ownership rolls 2021–2027); Hillsborough County FL (FL DOR 2026 ownership roll + Clerk recorded-document index Oct 14, 2026 to Oct 15, 2026), Miami-Dade County FL (FL DOR 2026 ownership roll), Broward County FL (FL DOR 2026 ownership roll), Palm Beach County FL (FL DOR 2026 ownership roll); King County WA (Assessor sale records 0000-00-00–2026-10-14; no owner-of-record names published); Cook County IL (Assessor sale records 1982–2026 + ownership rolls 1999–2026); also looked up per issuer when its page is viewed. Recorder indexes (party names on deeds, mortgages and liens) in TX, AZ, NV, CA and WA counties and outside the Clerk index in FL, mortgages and liens outside NYC and Hillsborough County, lis pendens and foreclosure notices everywhere, Los Angeles County CA, Clark County NV, New York City bulk pass (not finished; per-issuer lookups only so far), Maricopa County AZ (loader ready; commercial-purpose statement not yet filed), Salt Lake County UT, and all other counties are not covered — not searched. Last refresh by source: NYC ACRIS via NYC Open Data (Real Property Parties 636b-3b5g, Master bnx9-e6tj, Legals 8h5j-fqxa, Document Control Codes 7isb-wh4c) Oct 24, 2026, 9:34 AM ET; Cook County IL Assessor via Cook County Open Data (Parcel Sales wvhk-k5uv; Parcel Addresses 3723-97qp) Oct 24, 2026, 9:34 AM ET; Cook County IL Assessor via Cook County Open Data (Parcel Sales wvhk-k5uv; Parcel Addresses 3723-97qp) Oct 24, 2026, 8:30 AM ET; King County WA Assessor Real Property Sales extract (EXTR_RPSale.csv) Oct 24, 2026, 8:27 AM ET; Florida DOR NAL roll (Palm Beach 60) Oct 24, 2026, 8:25 AM ET; Florida DOR NAL roll (Broward 16) Oct 24, 2026, 8:24 AM ET; Florida DOR NAL roll (Dade 23) Oct 24, 2026, 8:23 AM ET; Florida DOR NAL roll (Hillsborough 39) Oct 24, 2026, 8:21 AM ET; Dallas Central Appraisal District ACCOUNT_INFO.CSV Oct 24, 2026, 8:20 AM ET; Harris County Appraisal District real_acct.txt Oct 24, 2026, 8:00 AM ET; Hillsborough County FL Clerk daily index Oct 23, 2026, 8:59 PM ET. NYC and Cook County are also looked up per issuer when its page is viewed; the most recent such lookup on this site finished Oct 24, 2026, 3:30 AM ET. Parties are named as the recorder's index names them (role suffixes as recorded); no address, account number or trust date is shown for an individual, and individual owners of record (home ownership) are not matched or shown. Items still in human review are not shown.

Issuers in this group

Why each issuer is here is stated in the "Linked by" column. Low-confidence links are never shown — they wait for human review.

SourceIssuerLinked byLocationIndustryFilingsSold (max)InvestorsMin. investment (latest filing)Active
EDGAR ↗AP Ardsley Partners Fund II, L.P.shared people, shared management entity, same business address, similar issuer namesNORWALK, CTPooled Investment Fund17$292,197,514
offering Indefinite · similar: $155,000–$5,250,000
31
similar: 4–27
No minimum reported
similar: $1,000–$100,000
2010–2025
EDGAR ↗AS Ardsley Sustainable Opportunities Fund, L.P.shared people, shared management entity, same business address, similar issuer namesNORWALK, CTPooled Investment Fund18$123,366,493
offering Indefinite · similar: $155,000–$5,250,000
47
similar: 4–27
No minimum reported
similar: $1,000–$100,000
2010–2025
EDGAR ↗AR Ardsley Ridgecrest Partners Fund, L.P.shared people, shared management entity, similar issuer namesSTAMFORD, CTPooled Investment Fund10$60,990,465
offering Indefinite · similar: $155,000–$5,250,000
25
similar: 4–27
No minimum reported
similar: $1,000–$100,000
2014–2024
EDGAR ↗AP Ardsley Partners Advanced Healthcare Fund, L.P.shared people, shared management entity, same business address, similar issuer namesNORWALK, CTPooled Investment Fund11$299,272,845
offering Indefinite · similar: $155,000–$5,250,000
6
similar: 4–27
No minimum reported
similar: $1,000–$100,000
2016–2025
EDGAR ↗AD Ardsley Duckdive Fund, L.P.shared people, shared management entity, same business address, similar issuer namesNORWALK, CTPooled Investment Fund9$39,040,367
offering Indefinite · similar: $155,000–$5,250,000
6
similar: 4–27
No minimum reported
similar: $1,000–$100,000
2016–2025
EDGAR ↗AH Ardsley Healthcare Fund, L.P.shared people, shared management entity, similar issuer namesSTAMFORD, CTPooled Investment Fund3$23,409,346
offering Indefinite · similar: $155,000–$5,250,000
2
similar: 4–27
No minimum reported
similar: $1,000–$100,000
2018–2020
EDGAR ↗AC Ardsley Conway Fund, L.P.shared people, shared management entity, similar issuer namesSTAMFORD, CTPooled Investment Fund2$14,025,000
offering Indefinite · similar: $155,000–$5,250,000
2
similar: 4–27
No minimum reported
similar: $1,000–$100,000
2018–2019
EDGAR ↗AW Ardsley World Information Technology Fund, L.P.shared people, shared management entity, same business address, similar issuer namesNORWALK, CTPooled Investment Fund8$76,052,050
offering Indefinite · similar: $155,000–$5,250,000
6
similar: 4–27
No minimum reported
similar: $1,000–$100,000
2018–2025

"Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

Timeline of offerings

SourceFiledIssuerFormIndustryOfferedSold
EDGAR ↗Nov 17, 2025Ardsley World Information Technology Fund, L.P.D/APooled Investment FundIndefinite$76,052,050
EDGAR ↗Nov 17, 2025Ardsley Duckdive Fund, L.P.D/APooled Investment FundIndefinite$17,057,441
EDGAR ↗Nov 17, 2025Ardsley Partners Advanced Healthcare Fund, L.P.D/APooled Investment FundIndefinite$285,559,260
EDGAR ↗Nov 17, 2025Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$98,182,946
EDGAR ↗Nov 17, 2025Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$55,379,539
EDGAR ↗Nov 18, 2024Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$99,432,946
EDGAR ↗Nov 18, 2024Ardsley Partners Advanced Healthcare Fund, L.P.D/APooled Investment FundIndefinite$285,559,260
EDGAR ↗Nov 18, 2024Ardsley Duckdive Fund, L.P.D/APooled Investment FundIndefinite$16,971,005
EDGAR ↗Nov 18, 2024Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$55,379,539
EDGAR ↗Nov 18, 2024Ardsley World Information Technology Fund, L.P.D/APooled Investment FundIndefinite$73,204,168
EDGAR ↗Nov 18, 2024Ardsley Ridgecrest Partners Fund, L.P.D/APooled Investment FundIndefinite$30,271,215
EDGAR ↗Nov 17, 2023Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$108,388,405
EDGAR ↗Nov 17, 2023Ardsley Partners Advanced Healthcare Fund, L.P.D/APooled Investment FundIndefinite$285,559,260
EDGAR ↗Nov 17, 2023Ardsley World Information Technology Fund, L.P.D/APooled Investment FundIndefinite$70,354,541
EDGAR ↗Nov 17, 2023Ardsley Duckdive Fund, L.P.D/APooled Investment FundIndefinite$16,800,000
EDGAR ↗Nov 17, 2023Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$59,619,539
EDGAR ↗Nov 17, 2023Ardsley Ridgecrest Partners Fund, L.P.D/APooled Investment FundIndefinite$30,271,215
EDGAR ↗Jun 2, 2023Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$108,138,405
EDGAR ↗Nov 18, 2022Ardsley World Information Technology Fund, L.P.D/APooled Investment FundIndefinite$70,354,541
EDGAR ↗Nov 18, 2022Ardsley Partners Advanced Healthcare Fund, L.P.D/APooled Investment FundIndefinite$299,272,845
EDGAR ↗Nov 18, 2022Ardsley Ridgecrest Partners Fund, L.P.D/APooled Investment FundIndefinite$30,271,215
EDGAR ↗Nov 18, 2022Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$111,478,405
EDGAR ↗Nov 18, 2022Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$59,934,539
EDGAR ↗Nov 19, 2021Ardsley World Information Technology Fund, L.P.D/APooled Investment FundIndefinite$70,329,541
EDGAR ↗Nov 19, 2021Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$110,903,405
EDGAR ↗Nov 19, 2021Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$59,934,539
EDGAR ↗Nov 19, 2021Ardsley Partners Advanced Healthcare Fund, L.P.D/APooled Investment FundIndefinite$299,272,845
EDGAR ↗Nov 19, 2021Ardsley Ridgecrest Partners Fund, L.P.D/APooled Investment FundIndefinite$30,271,215
EDGAR ↗Nov 20, 2020Ardsley World Information Technology Fund, L.P.D/APooled Investment FundIndefinite$70,204,541
EDGAR ↗Nov 20, 2020Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$61,761,955
EDGAR ↗Nov 20, 2020Ardsley Healthcare Fund, L.P.D/APooled Investment FundIndefinite$23,409,346
EDGAR ↗Nov 20, 2020Ardsley Duckdive Fund, L.P.D/APooled Investment FundIndefinite$39,040,367
EDGAR ↗Nov 20, 2020Ardsley Partners Advanced Healthcare Fund, L.P.D/APooled Investment FundIndefinite$299,272,845
EDGAR ↗Nov 20, 2020Ardsley Ridgecrest Partners Fund, L.P.D/APooled Investment FundIndefinite$30,271,215
EDGAR ↗Nov 20, 2020Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$116,803,405
EDGAR ↗Nov 21, 2019Ardsley World Information Technology Fund, L.P.D/APooled Investment FundIndefinite$64,140,930
EDGAR ↗Nov 21, 2019Ardsley Conway Fund, L.P.D/APooled Investment FundIndefinite$14,025,000
EDGAR ↗Nov 21, 2019Ardsley Healthcare Fund, L.P.D/APooled Investment FundIndefinite$23,000,000
EDGAR ↗Nov 21, 2019Ardsley Duckdive Fund, L.P.D/APooled Investment FundIndefinite$38,300,000
EDGAR ↗Nov 21, 2019Ardsley Partners Advanced Healthcare Fund, L.P.D/APooled Investment FundIndefinite$299,272,845
EDGAR ↗Nov 21, 2019Ardsley Ridgecrest Partners Fund, L.P.D/APooled Investment FundIndefinite$30,271,215
EDGAR ↗Nov 21, 2019Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$119,033,405
EDGAR ↗Nov 21, 2019Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$64,298,849
EDGAR ↗Nov 19, 2018Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$118,480,405
EDGAR ↗Nov 19, 2018Ardsley Partners Advanced Healthcare Fund, L.P.D/APooled Investment FundIndefinite$299,272,845
EDGAR ↗Nov 19, 2018Ardsley Healthcare Fund, L.P.DPooled Investment FundIndefinite$23,000,000
EDGAR ↗Nov 19, 2018Ardsley Conway Fund, L.P.DPooled Investment FundIndefinite$9,525,000
EDGAR ↗Nov 19, 2018Ardsley World Information Technology Fund, L.P.DPooled Investment FundIndefinite$22,800,000
EDGAR ↗Nov 19, 2018Ardsley Duckdive Fund, L.P.D/APooled Investment FundIndefinite$28,300,000
EDGAR ↗Nov 19, 2018Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$68,798,849
EDGAR ↗May 31, 2018Ardsley Duckdive Fund, L.P.D/APooled Investment FundIndefinite$26,800,000
EDGAR ↗Mar 14, 2018Ardsley Partners Advanced Healthcare Fund, L.P.D/APooled Investment FundIndefinite$299,272,845
EDGAR ↗Mar 14, 2018Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$68,798,849
EDGAR ↗Mar 14, 2018Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$118,530,405
EDGAR ↗May 31, 2017Ardsley Duckdive Fund, L.P.D/APooled Investment FundIndefinite$25,015,000
EDGAR ↗Mar 21, 2017Ardsley Ridgecrest Partners Fund, L.P.D/APooled Investment FundIndefinite$30,271,215
EDGAR ↗Mar 14, 2017Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$111,584,215
EDGAR ↗Mar 14, 2017Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$73,259,017
EDGAR ↗Mar 14, 2017Ardsley Partners Advanced Healthcare Fund, L.P.D/APooled Investment FundIndefinite$113,366,916
EDGAR ↗May 31, 2016Ardsley Duckdive Fund, L.P.DPooled Investment FundIndefinite$5,015,000
EDGAR ↗Mar 21, 2016Ardsley Ridgecrest Partners Fund, L.P.D/APooled Investment FundIndefinite$23,501,461
EDGAR ↗Mar 14, 2016Ardsley Partners Advanced Healthcare Fund, L.P.DPooled Investment FundIndefinite$111,834,982
EDGAR ↗Mar 14, 2016Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$239,656,341
EDGAR ↗Mar 14, 2016Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$123,366,493
EDGAR ↗Mar 20, 2015Ardsley Ridgecrest Partners Fund, L.P.D/APooled Investment FundIndefinite$54,710,269
EDGAR ↗Mar 12, 2015Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$106,138,046
EDGAR ↗Mar 12, 2015Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$292,197,514
EDGAR ↗Mar 20, 2014Ardsley Ridgecrest Partners Fund, L.P.DPooled Investment FundIndefinite$60,990,465
EDGAR ↗Mar 12, 2014Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$75,035,811
EDGAR ↗Mar 12, 2014Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$78,813,523
EDGAR ↗Mar 12, 2013Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$60,250,811
EDGAR ↗Mar 12, 2013Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$82,518,372
EDGAR ↗Mar 12, 2012Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$82,629,372
EDGAR ↗Mar 12, 2012Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$57,825,811
EDGAR ↗Mar 11, 2011Ardsley Sustainable Opportunities Fund, L.P.D/APooled Investment FundIndefinite$51,727,811
EDGAR ↗Mar 11, 2011Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$82,315,401
EDGAR ↗Mar 11, 2010Ardsley Partners Fund II, L.P.D/APooled Investment FundIndefinite$75,704,436
EDGAR ↗Mar 11, 2010Ardsley Sustainable Opportunities Fund, L.P.DPooled Investment FundIndefinite$42,772,811

Activity: 0 new offerings in the last 12 months across all issuers in this group (new offering = a Form D that is not an amendment, D/A) · most recent filing Nov 17, 2025. Industry history, as reported on each offering's latest filing: All 8 offerings reported: Pooled Investment Fund (2010–2018).

People across the group

NameRolesIssuers hereFirst → last listed
PH Philip J. HemplemanExecutive Officer8Mar 11, 2010 → Nov 17, 2025
JA J. Ardsley Advisory Partners LP entityPromoter8Mar 20, 2015 → Nov 17, 2025
SH Spencer HemplemanExecutive Officer8Nov 19, 2018 → Nov 17, 2025
JA J. Ardsley Partners I GP, LLC entityExecutive Officer8Nov 19, 2018 → Nov 17, 2025
JA J. Ardsley Partners I entityExecutive Officer2Mar 12, 2014 → Mar 14, 2018
JA J. Ardsley Advisory entityPromoter2Mar 12, 2015 → Mar 14, 2018
AI Ardsley Partners I Ardsley Partners IExecutive Officer2Mar 11, 2010 → Mar 12, 2013
AP Ardsley Partners I entityExecutive Officer1Mar 20, 2014 → Mar 21, 2017

Business registration (state registry / Secretary of State)

None of the 8 issuers has a record in the registries searched.

Registries searched: AL (Alabama Secretary of State — Business Entity Records (arc-sos.state.al.us), searched by issuer name, data as of Oct 24, 2026); CO (Colorado Secretary of State — Business Entities in Colorado (data.colorado.gov), data as of Oct 23, 2026); CT (Connecticut Secretary of the State — Business Registry (data.ct.gov), data as of Oct 24, 2026); FL (Florida Department of State, Division of Corporations — quarterly corporate data file (Sunbiz), data as of Oct 7, 2026); NY (New York Department of State — Corporations and Other Entities (data.ny.gov: All Filings + Active Corporations), data as of Oct 20, 2026); OR (Oregon Secretary of State — Active Businesses, All (data.oregon.gov), data as of Oct 20, 2026); PA (Pennsylvania Department of State — Registered Businesses, Current (data.pa.gov), data as of Oct 6, 2026); TX (Texas Comptroller — Active Franchise Taxpayers incl. Secretary of State file data (data.texas.gov), data as of Oct 24, 2026). Registries of other states have not been searched: many publish no bulk file and require a CAPTCHA or bot challenge on their search page, which we do not bypass (Delaware, for example, offers no public bulk file). A registry listing is the state's own record of the entity; it says nothing about the offering itself.

Adviser registration (Form ADV)

Searched SEC Form ADV bulk data (registered + exempt reporting advisers) (24,962 records as of Oct 2, 2026, 8:00 AM ET) — nothing matched Ardsley.

Meta advertising

No Meta Pixel ids or Facebook / Instagram page links on file for Ardsley as of Oct 24, 2026 — the sponsor website is read for them once it is on file (runs automatically). Meta Ad Library: not searched by PartnerFacts (no API access); a one-tap Ad Library search is under Look further.

Other offering types (Regulation A and Regulation Crowdfunding)

Searched SEC Regulation A Data Sets (Forms 1-A, 1-K, 1-Z; 2015 Q2 → 2026 Q3); SEC Crowdfunding Offerings Data Sets (Form C family; 2016 Q2 → 2026 Q3); EDGAR form index for 2026 Q3 → 2026 Q4 (51,358 records as of Oct 23, 2026, 8:41 PM ET) — nothing matched this name.

Public profiles and social

No website or social profile named in Ardsley's SEC filings (Form C, Reg A, Form ADV; checked Oct 24, 2026). Web search for this name: #53,602 of 374,652 in line (1,386 issuers searched so far). One-tap searches: Look further ↓

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