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

Sponsor Check › Person

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

John Flavin

Named as an officer, director or promoter on SEC Form D filings · IL · Jan 30, 2015 → May 1, 2025

4deals (issuers)
$91.9Mreported sold
97investors
11Form D filings
2015–2025years on file

Data last updated Oct 23, 2026, 5:45 PM ET · Courts (RECAP) last checked: Oct 24, 2026, 2:33 AM ET · SEC enforcement last checked: covered by the index scan as of Oct 24, 2026, 2:50 AM ET

The short version

John Flavin is listed as an executive officer and director on 11 SEC Form D filings by 4 issuers between Jan 2015 and May 2025: ENDOTRONIX INC (Lisle, IL — other health care — 2018–2020; $69.3M reported sold to 52 investors), ClostraBio, Inc. (Chicago, IL — industry reported as "Other" — 2022; $9.94M reported sold to 15 investors), Portal Innovations Momentum Fund, L.P. (Chicago, IL — pooled investment fund — 2022–2025; $9.35M reported sold to 18 investors) and AltaThera Pharmaceuticals, LLC (Chicago, IL — pharmaceuticals — 2015; $3.35M reported sold to 12 investors).

What this means A repeat sponsor — 4 separate companies raised money with this person listed as executive officer and director, over about 10 years. Across those companies the filings report $91.9M sold in total.

Listed alongside PIM GP, LLC (4 shared filings, management entity), Patrick Flavin (4 shared filings), Brandon Kashfian (3 shared filings), Gerry Brunk (3 shared filings), Harry Rowland (3 shared filings) and 15 others.

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

2 of the issuers belong to the sponsor group Portal (2 issuers, $19.3M reported sold, 2022–2025).

What this means A sponsor group is one team that sets up a new company for each deal. Portal has 2 companies on file and $19.3M 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) — 4 bankruptcy cases matching the name listed in Key records below.

What this means 4 records came back. Each one is listed below with a link to the original document and a line saying why it matched. A name match is not proof it is the same person or company — read the why line and the document. Being sued or named in a release is an accusation, not a finding.

We compared 11 public filings for John Flavin and found 9 differences, 2 worth asking the sponsor about: Form D filed 109 days after the first sale; Form D filed 322 days after the first sale; 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 John Flavin has not run yet — it is joining a line of 14,475 names; searches run around the clock at the hosts' allowed rate. Searched so far: 28 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, 2:33 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 John Flavin..

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

4 cases: 4 closed (disposition not in docket feed)

John C. Flavin and Kathleen M. Flavin closed
United States Bankruptcy Court, E.D. Pennsylvania · No. 00-21016 · Filed Mar 20, 2000 · Closed Jul 11, 2000
Role of John C. Flavin and Kathleen M. Flavin: Debtor · Outcome: Case closed 2000-07-11 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 5 federal dockets); 2 people with this name in Form D filings; court in PA (not a filing state)
John Flavin closed
United States Bankruptcy Court, C.D. California · No. 1:95-bk-12405 · Filed Apr 4, 1995 · Closed Jul 28, 1995
Role of John Flavin: Debtor · Outcome: Case closed 1995-07-28 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 5 federal dockets); 2 people with this name in Form D filings; court in CA (not a filing state)
John M. Flavin and Dolores Flavin closed
United States Bankruptcy Court, D. Massachusetts · No. 92-40206 · Filed Jan 24, 1992 · Closed Jul 22, 1993
Role of John M. Flavin and Dolores Flavin: Debtor · Outcome: Case closed 1993-07-22 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 5 federal dockets); 2 people with this name in Form D filings; court in MA (not a filing state)
John Flavin and Leann Flavin closed
United States Bankruptcy Court, N.D. New York · No. 89-10590 · Filed Mar 24, 1989 · Closed Jan 31, 1995
Role of John Flavin and Leann Flavin: Debtor · Outcome: Case closed 1995-01-31 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 5 federal dockets); 2 people with this name in Form D filings; court in NY (not a filing state)
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, 2:33 AM ET.

Court records show docket facts only; we never restate allegations as facts. Outcome wording comes from the docket feed; where it does not state a disposition we say so.

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

9 differences found between the filings for John Flavin — 2 worth asking about (compared 11 filings on Oct 24, 2026)

Worth asking · Oct 17, 2014 – Feb 3, 2015

Form D filed 109 days after the first sale — AltaThera Pharmaceuticals, LLC

The filing says the first sale was Oct 17, 2014. The Form D was filed Feb 3, 2015 — 109 days later. The rule: a Form D is generally due within 15 days after the first sale, so this one is 94 days past that.

What this means A late notice is common and carries no penalty by itself. It is worth asking the sponsor why the paperwork lagged.

Sources
Worth asking · Mar 14, 2014 – Jan 30, 2015

Form D filed 322 days after the first sale — AltaThera Pharmaceuticals, LLC

The filing says the first sale was Mar 14, 2014. The Form D was filed Jan 30, 2015 — 322 days later. The rule: a Form D is generally due within 15 days after the first sale, so this one is 307 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.

Sources
Note · May 2, 2024 – May 1, 2025

Offering amount lowered between filings — Portal Innovations Momentum Fund, L.P.

The May 2, 2024 filing says $15,000,000 offered; the May 1, 2025 Form D/A says $10,000,000.

What this means The target raise got smaller. That can mean the plan shrank or the sponsor stopped early. Ask what changed in the deal.

Sources
Note · Oct 16, 2019 – Dec 7, 2020

Offering amount changed between filings — ENDOTRONIX INC

The Oct 16, 2019 filing says $70,045,943 offered; the Dec 7, 2020 Form D/A says $90,787,992.

What this means The target raise changed. Raising the cap is common when a deal grows; ask whether the extra money has the same terms and use.

Sources
Note · Sep 28, 2018 – Oct 16, 2019

Offering amount changed between filings — ENDOTRONIX INC

The Sep 28, 2018 filing says $45,000,111 offered; the Oct 16, 2019 Form D/A says $70,045,943.

What this means The target raise changed. Raising the cap is common when a deal grows; ask whether the extra money has the same terms and use.

Sources
Note · May 9, 2022 – May 1, 2025

No amendment in the last 12 months on an offering that may still be open — Portal Innovations Momentum Fund, L.P. (latest filing May 1, 2025)

The latest filing for this offering is dated May 1, 2025 (first sale May 9, 2022). It reports $9,352,600 sold of $10,000,000 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.

Sources
Note · Sep 12, 2022 – Sep 26, 2022

No amendment in the last 12 months on an offering that may still be open — ClostraBio, Inc. (latest filing Sep 26, 2022)

The latest filing for this offering is dated Sep 26, 2022 (first sale Sep 12, 2022). It reports $9,935,759 sold of $10,960,833 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.

Sources
Note · Sep 14, 2018 – Dec 7, 2020

No amendment in the last 12 months on an offering that may still be open — ENDOTRONIX INC (latest filing Dec 7, 2020)

The latest filing for this offering is dated Dec 7, 2020 (first sale Sep 14, 2018). It reports $69,277,224 sold of $90,787,992 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.

Sources
Note · Jul 12, 2019 – Mar 22, 2021

Same name, different state: "John Flavin" (MA) is a separate record

This page covers filings where the address state is IL. A separate record, "John Flavin" with address state MA, is listed on 2 filings — most recently by Pyxis Oncology, Inc. (Mar 22, 2021). Both records have filings in the same period (Jul 12, 2019 to Mar 22, 2021).

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
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 6 offerings report sales commissions totalling $200,000; 0 report finder's fees; 0 report proceeds to related persons.

Offering (latest filing)Sales commissionsFinder's feesTo insidersPaid to sell itSource
May 1, 2025 D/A
Portal Innovations Momentum Fund, L.P.
File 021-444813
$0$0$0None listed on this filingEDGAR ↗
Sep 26, 2022 D
ClostraBio, Inc.
File 021-459870
$0$0$0None listed on this filingEDGAR ↗
Dec 7, 2020 D/A
ENDOTRONIX INC
File 021-322392
$0$0$0None listed on this filingEDGAR ↗
Jul 31, 2015 D
AltaThera Pharmaceuticals, LLC
File 021-244889
$80,000$0$0M Barc Investment Group, Inc. BrokerCheck CRD 41082 ↗EDGAR ↗
Feb 3, 2015 D
AltaThera Pharmaceuticals, LLC
File 021-233357
$80,000$0$0M Barc Investment Group, Inc. BrokerCheck CRD 41082 ↗EDGAR ↗
Jan 30, 2015 D
AltaThera Pharmaceuticals, LLC
File 021-233173
$40,000$0$0M Barc Investment Group, Inc. BrokerCheck CRD 41082 ↗EDGAR ↗
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 4

Every issuer that named John Flavin 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: Portal

Portal Innovations Momentum Fund, L.P.

Chicago, IL · May 6, 2022 → May 1, 2025 · 4 filings
  • May 1, 2025 · D/A · $9,352,600 sold of $10,000,000 · 18 investors · min. No minimum reported · role: Executive Officer (Managing Member of the General Partner) EDGAR ↗
  • May 2, 2024 · D/A · $8,242,424 sold of $15,000,000 · 14 investors · min. No minimum reported · role: Executive Officer (Managing Member of the General Partner) EDGAR ↗
  • May 5, 2023 · D/A · $6,600,000 sold of $15,000,000 · 8 investors · min. No minimum reported · role: Executive Officer (Managing Member of the General Partner) EDGAR ↗
  • May 6, 2022 · D · $0 sold of $15,000,000 · 0 investors · min. No minimum reported · role: Executive Officer (Managing Member of the General Partner) EDGAR ↗

Raised $9.35M from 18 investors (94% of the $10M target) as of the latest filing. John is listed as executive officer on 4 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 · group: Portal

ClostraBio, Inc.

Chicago, IL · Sep 26, 2022
  • Sep 26, 2022 · D · $9,935,759 sold of $10,960,833 · 15 investors · min. No minimum reported · role: Executive Officer, Director (Executive Chairman) EDGAR ↗

Raised $9.94M from 15 investors (91% of the $11M target) as of the latest filing. John is listed as executive officer, director.

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: Other / 506(b) (18,678 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 Health Care

ENDOTRONIX INC

Lisle, IL · Sep 28, 2018 → Dec 7, 2020 · 3 filings
  • Dec 7, 2020 · D/A · $69,277,224 sold of $90,787,992 · 38 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Oct 16, 2019 · D/A · $55,382,667 sold of $70,045,943 · 38 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Sep 28, 2018 · D · $20,250,169 sold of $45,000,111 · 31 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $69.3M from 52 investors (76% of the $90.8M target) as of the latest filing. John is listed as executive officer on 3 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: Other Health Care / 506(b) (4,189 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.

Pharmaceuticals

AltaThera Pharmaceuticals, LLC

Chicago, IL · Jan 30, 2015 → Jul 31, 2015 · 3 filings
  • Jul 31, 2015 · D · $1,000,000 sold of $1,000,000 · 1 investors · min. $1,000,000 · role: Director EDGAR ↗
  • Feb 3, 2015 · D · $1,000,000 sold of $1,000,000 · 1 investors · min. $1,000,000 · role: Director EDGAR ↗
  • Jan 30, 2015 · D · $500,000 sold of $500,000 · 1 investors · min. $500,000 · role: Director EDGAR ↗

Raised $3.35M from 12 investors (100% of the $1M target) as of the latest filing. John is listed as director on 3 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: Pharmaceuticals / 506(c) (33 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 (1)

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

  • John Flavin — MA, 1 issuer, Jul 12, 2019 → Mar 22, 2021 · no shared issuer

People around John 20

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

Management entity

PIM GP, LLC

Executive Officer · 4 shared filings (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Patrick Flavin

Executive Officer · 4 shared filings (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Robert Zieserl

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

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Marc Goldberg

Director · 3 shared filings (1 issuer) · also on 9 other issuers

Marc Goldberg is on 10 issuers in total — a repeat sponsor. Their page lists every one.

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

Paul LaViolette

Director · 3 shared filings (1 issuer) · also on 19 other issuers

Paul LaViolette is on 20 issuers in total — a repeat sponsor. Their page lists every one.

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

James J. Hummer

Director · 3 shared filings (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Harry Rowland

Executive Officer, Director · 3 shared filings (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Gerry Brunk

Director · 3 shared filings (1 issuer) · also on 4 other issuers

Gerry Brunk is on 5 issuers in total — a repeat sponsor. Their page lists every one.

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

Stephen O'Sullivan

Executive Officer, Director · 3 shared filings (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Brandon Kashfian

Executive Officer, Director · 3 shared filings (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

James Wittenberg

Executive Officer · 3 shared filings (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Jennifer McMahon

Director · 3 shared filings (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Merrill Barden

Executive Officer · 2 shared filings (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Fouad Azzam

Director · 2 shared filings (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Mahlaqa Patel

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Merrill Bardin

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Jay Welsh

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Brett Newswanger

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Jeffrey Hubbell

Executive Officer, Director · 1 shared filing (1 issuer) · also on 1 other issuer

Listed on the same filings as John Flavin. Their page shows their other deals.

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

Cathryn Nagler

Executive Officer, Director · 1 shared filing (1 issuer)

Listed on the same filings as John Flavin. Their page shows their other deals.

The team behind the deals

Sponsor group

Portal

2 issuers · 5 filings · $19.3M reported sold · 2022–2025

One team, 2 deal companies. John Flavin is listed on 2 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 John Flavin.

Same business address

31 other issuers file from the same address

A shared address can mean the same team, a shared office building or a registered agent. It is a lead, not a conclusion.

Registrations and other filings

Adviser registration (Form ADV)

None of the 4 issuers this person is listed on appears in Form ADV (searched 24,962 advisers as of Oct 2, 2026). A person is never an adviser firm; Form ADV is checked for the issuers and the management companies they are listed with.

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 John Flavin 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 4 issuers this person is listed on — nothing matched.

Public profiles and social

Websites and social links of the issuers John Flavin is listed on: none on file. No website or social profile named in ENDOTRONIX INC's SEC filings (Form C, Reg A, Form ADV; checked Oct 24, 2026). Web search for this name: #205,205 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 (Lisle, IL). Each opens in a new tab; what you find there is not verified by PartnerFacts.

Change history

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