PartnerFacts
Data last updated: Oct 23, 2026, 5:45 PM ETLatest filing: Oct 22, 2026Now: Oct 24, 2026, 5:16 AM ET

Sponsor Check › Person

TB
No photo found yet (own website and image search run after this page is viewed)

Thomas O'Brien

Named as an officer, director or promoter on SEC Form D filings · NY · Dec 17, 2013 → Dec 19, 2019

3deals (issuers)
$295.3Mreported sold
414investors
21Form D filings
2013–2019years on file

Data last updated Oct 23, 2026, 5:45 PM ET · Courts (RECAP) last checked: Oct 24, 2026, 2:20 AM ET · SEC enforcement last checked: covered by the index scan as of Oct 24, 2026, 2:50 AM ET

The short version

Thomas O'Brien is listed as an executive officer on 21 SEC Form D filings by 3 issuers between Dec 2013 and Dec 2019: HAMPSHIRE ASSOCIATES FUND, L.P. (New York, NY — pooled investment fund — 2013–2019; $118.3M reported sold to 191 investors), Hampshire Associates Fund QP, L.P. (New York, NY — pooled investment fund — 2013–2019; $89M reported sold to 66 investors) and HAMPSHIRE INSTITUTIONAL FUND, L.P. (New York, NY — pooled investment fund — 2013–2019; $87.9M reported sold to 157 investors).

What this means A repeat sponsor — 3 separate companies raised money with this person listed as executive officer, over about 6 years. Across those companies the filings report $295.3M sold in total.

Listed alongside David Aaron (21 shared filings), SAGE Advisors, LLC (21 shared filings, management entity), William E. Aaron (18 shared filings), Lloyd Abramowitz (12 shared filings) and Michael Stein (3 shared filings).

What this means These are the other officers, directors or promoters the companies named on the same forms — the team around Thomas. Each name links to their own page.

All 3 issuers belong to the sponsor group Hampshire (7 issuers, $363.3M reported sold, 2009–2026).

What this means A sponsor group is one team that sets up a new company for each deal. Hampshire has 7 companies on file and $363.3M reported sold in total — the group page shows the whole track record in one place.

Public records searched: federal courts (CourtListener / RECAP), SEC enforcement releases, state securities regulators (AZ, CA, DE, TX, WA) — none found.

What this means Nothing turned up where we looked (3 sources). That does not prove there is nothing — it means none was found in those sources on that date.

We compared 21 public filings for Thomas O'Brien and found 11 differences, 3 worth asking the sponsor about: Thomas O'Brien is no longer listed on the Feb 3, 2020 amendment; 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 Thomas O'Brien has not run yet — it is joining a line of 11,335 names; searches run around the clock at the hosts' allowed rate. Searched so far: 27 names.

Community comments are quoted as written by their authors. Sources searched: BiggerPockets forums (via DuckDuckGo, Brave, Bing and BiggerPockets search) and Reddit (search feed + public archive).

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, 2:20 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: AZ, CA, DE, TX, WA (crawled Oct 23, 2026)

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 Thomas O'Brien..

State securities regulators searched: AZ (Corporation Commission Securities Division), CA (DFPI — 16 of 12,159 DFPI respondent pages read so far; sponsor-name matches are read first), DE (DOJ Investor Protection Unit), TX (State Securities Board), WA (DFI) — last crawled Oct 23, 2026, 9:57 PM ET. Other states are not covered.

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, 2:20 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

Comparisons cover issuers and sponsor groups — see the issuer pages under Deals

11 differences found between the filings for Thomas O'Brien — 3 worth asking about (compared 21 filings on Oct 24, 2026)

Worth asking · Dec 19, 2019 – Feb 3, 2020

Thomas O'Brien is no longer listed on the Feb 3, 2020 amendment — Hampshire Associates Fund QP, L.P.

Thomas O'Brien appears on the Dec 19, 2019 Form D/A (executive officer) but not on the Feb 3, 2020 Form D/A for the same offering.

What this means People leave, and the issuer must list only current officers, directors and promoters. It is still worth asking why this person left and who replaced them.

Sources
Worth asking · Dec 19, 2019 – Feb 3, 2020

Thomas O'Brien is no longer listed on the Feb 3, 2020 amendment — HAMPSHIRE INSTITUTIONAL FUND, L.P.

Thomas O'Brien appears on the Dec 19, 2019 Form D/A (executive officer) but not on the Feb 3, 2020 Form D/A for the same offering.

What this means People leave, and the issuer must list only current officers, directors and promoters. It is still worth asking why this person left and who replaced them.

Sources
Worth asking · Dec 19, 2019 – Feb 3, 2020

Thomas O'Brien is no longer listed on the Feb 3, 2020 amendment — HAMPSHIRE ASSOCIATES FUND, L.P.

Thomas O'Brien appears on the Dec 19, 2019 Form D/A (executive officer) but not on the Feb 3, 2020 Form D/A for the same offering.

What this means People leave, and the issuer must list only current officers, directors and promoters. It is still worth asking why this person left and who replaced them.

Sources
Note · Apr 23, 2021 – Oct 22, 2025

Same name, different state: "Thomas O'Brien" (GA or CO) is a separate record

This page covers filings where the address state is NY. A separate record, "Thomas O'Brien" with address state GA or CO, is listed on 5 filings — most recently by Andson Biotech Inc. (Oct 22, 2025). The two records do not overlap in time: this page runs Dec 17, 2013 to Dec 19, 2019; the other runs Apr 23, 2021 to Oct 22, 2025.

What this means Could be the same person who moved, or two people with the same name. We keep them apart until a filing ties them together. Check both pages before you decide.

Sources
Note · Dec 29, 2023

Same name, different state: "Thomas O'Brien" (FL) is a separate record

This page covers filings where the address state is NY. A separate record, "Thomas O'Brien" with address state FL, is listed on 1 filing — most recently by Brick Dynamics Inc. (Dec 29, 2023). The two records do not overlap in time: this page runs Dec 17, 2013 to Dec 19, 2019; the other has one filing dated Dec 29, 2023.

What this means Could be the same person who moved, or two people with the same name. We keep them apart until a filing ties them together. Check both pages before you decide.

Sources
Note · Oct 8, 2010 – Aug 10, 2017

Same name, different state: "Thomas O'Brien" (NJ) is a separate record

This page covers filings where the address state is NY. A separate record, "Thomas O'Brien" with address state NJ, is listed on 4 filings — most recently by SumRidge Partners Holdings LLC (Aug 10, 2017). Both records have filings in the same period (Dec 17, 2013 to Aug 10, 2017).

What this means Two records with one name were active at the same time. That can be one person listing different company addresses, or two different people. We keep them apart until a filing ties them together. Check both pages before you decide.

Sources
Note · Nov 10, 2009 – Nov 25, 2009

Same name, different state: "Thomas O'Brien" (SC) is a separate record

This page covers filings where the address state is NY. A separate record, "Thomas O'Brien" with address state SC, is listed on 2 filings — most recently by Revolutions Medical CORP (Nov 25, 2009). The two records do not overlap in time: this page runs Dec 17, 2013 to Dec 19, 2019; the other runs Nov 10, 2009 to Nov 25, 2009.

What this means Could be the same person who moved, or two people with the same name. We keep them apart until a filing ties them together. Check both pages before you decide.

Sources
Note · Sep 25, 2009

Same name, different state: "Thomas O'Brien" (CA) is a separate record

This page covers filings where the address state is NY. A separate record, "Thomas O'Brien" with address state CA, is listed on 1 filing — most recently by VirnetX Holding Corp (Sep 25, 2009). The two records do not overlap in time: this page runs Dec 17, 2013 to Dec 19, 2019; the other has one filing dated Sep 25, 2009.

What this means Could be the same person who moved, or two people with the same name. We keep them apart until a filing ties them together. Check both pages before you decide.

Sources
Note · Dec 17, 2014 – Dec 17, 2015

Minimum investment changed between filings — Hampshire Associates Fund QP, L.P.

The Dec 17, 2014 filing lists a minimum of $50,000; the Dec 17, 2015 Form D/A lists $1,000,000.

What this means A different minimum usually means the offering terms changed. Check which terms apply to you.

Sources
Note · Dec 17, 2014 – Dec 17, 2015

Minimum investment changed between filings — HAMPSHIRE INSTITUTIONAL FUND, L.P.

The Dec 17, 2014 filing lists a minimum of $50,000; the Dec 17, 2015 Form D/A lists $1,000,000.

What this means A different minimum usually means the offering terms changed. Check which terms apply to you.

Sources
Note · Dec 17, 2014 – Dec 17, 2015

Minimum investment changed between filings — HAMPSHIRE ASSOCIATES FUND, L.P.

The Dec 17, 2014 filing lists a minimum of $50,000; the Dec 17, 2015 Form D/A lists $1,000,000.

What this means A different minimum usually means the offering terms changed. Check which terms apply to you.

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. As of Oct 24, 2026.

5. Money to insiders

3 of 3 offerings report sales commissions totalling $57,149; 0 report finder's fees; 0 report proceeds to related persons. (includes amounts the issuer reported as estimates)

Offering (latest filing)Sales commissionsFinder's feesTo insidersPaid to sell itSource
Dec 19, 2019 D/A
HAMPSHIRE ASSOCIATES FUND, L.P.
File 021-83310-0N
$15,105 (est.)$0 (est.)$0 (est.)
SAGE Advisors, LLC and its affiliates receive customary management fees, as described in the Issuer's Confidential Private Placement Memorandum.
None listed on this filingEDGAR ↗
Dec 19, 2019 D/A
Hampshire Associates Fund QP, L.P.
File 021-68215
$26,685 (est.)$0 (est.)$0 (est.)
SAGE Advisors, LLC and its affiliates receive customary management fees, as described in the Issuer's Confidential Private Placement Memorandum.
None listed on this filingEDGAR ↗
Dec 19, 2019 D/A
HAMPSHIRE INSTITUTIONAL FUND, L.P.
File 021-83310-1N
$15,359 (est.)$0 (est.)$0 (est.)
SAGE Advisors, LLC and its affiliates receive customary management fees, as described in the Issuer's Confidential Private Placement Memorandum.
None listed on this filingEDGAR ↗
How this is counted

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 every filing this person is listed on (latest filing per offering, per issuer).

Deals 3

Every issuer that named Thomas O'Brien on a Form D, newest first. A Form D is the notice a company files after it starts selling a private investment.

Pooled Investment Fund · group: Hampshire

HAMPSHIRE INSTITUTIONAL FUND, L.P.

New York, NY · Dec 17, 2013 → Dec 19, 2019 · 7 filings
  • Dec 19, 2019 · D/A · $87,742,469 sold of Indefinite · 156 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 19, 2018 · D/A · $87,742,469 sold of Indefinite · 156 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 19, 2017 · D/A · $86,978,824 sold of Indefinite · 154 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 19, 2016 · D/A · $86,978,824 sold of Indefinite · 154 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 17, 2015 · D/A · $86,978,824 sold of Indefinite · 154 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 17, 2014 · D/A · $86,978,824 sold of Indefinite · 154 investors · min. $50,000 · role: Executive Officer EDGAR ↗
  • Dec 17, 2013 · D/A · $85,744,824 sold of Indefinite · 152 investors · min. $50,000 · role: Executive Officer EDGAR ↗

Raised $87.9M from 157 investors as of the latest filing. Thomas is listed as executive officer on 7 filings for this deal.

Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "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.

Pooled Investment Fund · group: Hampshire

Hampshire Associates Fund QP, L.P.

New York, NY · Dec 17, 2013 → Dec 19, 2019 · 7 filings
  • Dec 19, 2019 · D/A · $89,040,878 sold of Indefinite · 66 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 19, 2018 · D/A · $89,040,878 sold of Indefinite · 66 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 19, 2017 · D/A · $89,040,878 sold of Indefinite · 66 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 19, 2016 · D/A · $89,040,878 sold of Indefinite · 66 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 17, 2015 · D/A · $89,040,878 sold of Indefinite · 66 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 17, 2014 · D/A · $89,040,878 sold of Indefinite · 66 investors · min. $50,000 · role: Executive Officer EDGAR ↗
  • Dec 17, 2013 · D/A · $88,490,878 sold of Indefinite · 66 investors · min. $50,000 · role: Executive Officer EDGAR ↗

Raised $89M from 66 investors as of the latest filing. Thomas is listed as executive officer on 7 filings for this deal.

Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "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.

Pooled Investment Fund · group: Hampshire

HAMPSHIRE ASSOCIATES FUND, L.P.

New York, NY · Dec 17, 2013 → Dec 19, 2019 · 7 filings
  • Dec 19, 2019 · D/A · $117,586,875 sold of Indefinite · 191 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 19, 2018 · D/A · $117,586,875 sold of Indefinite · 191 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 19, 2017 · D/A · $117,586,875 sold of Indefinite · 191 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 19, 2016 · D/A · $117,386,875 sold of Indefinite · 191 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 17, 2015 · D/A · $117,386,875 sold of Indefinite · 191 investors · min. $1,000,000 · role: Executive Officer EDGAR ↗
  • Dec 17, 2014 · D/A · $116,886,875 sold of Indefinite · 191 investors · min. $50,000 · role: Executive Officer EDGAR ↗
  • Dec 17, 2013 · D/A · $116,236,875 sold of Indefinite · 191 investors · min. $50,000 · role: Executive Officer EDGAR ↗

Raised $118.3M from 191 investors as of the latest filing. Thomas is listed as executive officer on 7 filings for this deal.

Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "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.

Other pages with the same name (12)

Separate person records under the same name, not combined with this page. Each line says whether it shares an issuer with this record.

  • Thomas O'Brien — NJ, 2 issuers, Oct 8, 2010 → Aug 10, 2017 · no shared issuer
  • Thomas O'Brien — GA, CO, 2 issuers, Apr 23, 2021 → Oct 22, 2025 · no shared issuer
  • Thomas J. O'Brien — GA, 1 issuer, Apr 30, 2009 → Oct 5, 2018 · no shared issuer
  • Thomas O'Brien — CA, 1 issuer, Sep 25, 2009 → Sep 25, 2009 · no shared issuer
  • Thomas O'Brien — SC, 1 issuer, Nov 10, 2009 → Nov 25, 2009 · no shared issuer
  • Thomas N. O'Brien — MA, 1 issuer, Jun 9, 2017 → Jun 9, 2017 · no shared issuer
  • Thomas M. O'Brien — OH, 1 issuer, Jun 24, 2019 → Jun 24, 2019 · no shared issuer
  • Thomas J O'Brien — OK, 1 issuer, Apr 4, 2022 → Oct 17, 2022 · no shared issuer
  • Thomas O'Brien — FL, 1 issuer, Dec 29, 2023 → Dec 29, 2023 · no shared issuer
  • Thomas H. O'Brien — NY, 1 issuer, Mar 4, 2010 → Mar 2, 2011 · no shared issuer
  • Thomas J. O'Brien — NY, 1 issuer, Mar 7, 2012 → Apr 4, 2019 · no shared issuer
  • Thomas Murray O'Brien — SC, 1 issuer, Apr 8, 2015 → Apr 8, 2015 · no shared issuer

People around Thomas 5

Officers, directors, promoters and management entities named on the same filings, as of Oct 23, 2026, 5:45 PM ET.

Management entity

SAGE Advisors, LLC

Executive Officer, Promoter · 21 shared filings (3 issuers) · also on 1 other issuer

Listed on the same filings as Thomas O'Brien. Their page shows their other deals.

DA
No photo found yet (own website and image search run after this page is viewed)
Person

David Aaron

Executive Officer · 21 shared filings (3 issuers) · also on 1 other issuer

Listed on the same filings as Thomas O'Brien. Their page shows their other deals.

WA
No photo found yet (own website and image search run after this page is viewed)
Person

William E. Aaron

Executive Officer · 18 shared filings (3 issuers) · also on 1 other issuer

Listed on the same filings as Thomas O'Brien. Their page shows their other deals.

LA
No photo found yet (own website and image search run after this page is viewed)
Person

Lloyd Abramowitz

Executive Officer · 12 shared filings (3 issuers) · also on 1 other issuer

Listed on the same filings as Thomas O'Brien. Their page shows their other deals.

MS
No photo found yet (own website and image search run after this page is viewed)
Person

Michael Stein

Executive Officer · 3 shared filings (3 issuers) · also on 1 other issuer

Listed on the same filings as Thomas O'Brien. Their page shows their other deals.

The team behind the deals

Sponsor group

Hampshire

7 issuers · 67 filings · $363.3M reported sold · 2009–2026

One team, 7 deal companies. Thomas O'Brien is listed on 3 of them.

Sources

Issuers are grouped when their Form D filings share related persons, a management entity or a business address (automatic match from the filings). "Listed" marks the issuers that name Thomas O'Brien.

Registrations and other filings

Adviser registration (Form ADV)

A person is never an adviser firm. 3 of the 3 issuers this person is listed on match a Form ADV adviser (searched 24,962 advisers as of Oct 2, 2026): HAMPSHIRE INSTITUTIONAL FUND, L.P., Hampshire Associates Fund QP, L.P., HAMPSHIRE ASSOCIATES FUND, L.P..

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.

Property records none — individuals are not matched

Property records are matched to companies only, never to individuals, so none are matched to Thomas O'Brien by design. Searched property records in Hillsborough County FL (Clerk recorded-document index Oct 14, 2026 to Oct 15, 2026 + FL DOR 2026 ownership roll), Miami-Dade County FL (FL DOR 2026 ownership roll), Harris County TX (HCAD 2026 ownership roll), Dallas County TX (DCAD 2026 ownership roll), New York City ACRIS documents and PLUTO ownership rows already retrieved for other issuers, Cook County IL sale and ownership rows already retrieved for other issuers (814,874 records as of Oct 23, 2026, 8:59 PM ET) for the 3 issuers this person is listed on — nothing matched.

Public profiles and social

Websites and social links of the issuers Thomas O'Brien is listed on: none on file. No website or social profile named in HAMPSHIRE ASSOCIATES FUND, L.P.'s SEC filings (Form C, Reg A, Form ADV; checked Oct 24, 2026). Web search for this name: #43,830 of 374,652 in line (14 issuers searched so far). One-tap searches: Look further ↓

Look further

One-tap searches on sites we do not index ourselves, with the name pre-filled (New York, NY). Each opens in a new tab; what you find there is not verified by PartnerFacts.

Change history

No corrections have been requested for this page.

Every fact links to its public-record source. Plain-English notes next to a fact are our reading of that fact, not a rating. Request a correction · Facts policy

Request a correction

Free. Logged with status: received → under review → fixed / confirmed with source.

Add a response

If this is you or your firm, add a sourced explanation next to any fact. Reviewed before publishing.

Monitor this person

Members get an email when Thomas O'Brien appears on a new Form D, or when a court case or SEC action is matched to them. See plans →