PartnerFacts
Data last updated: Oct 23, 2026, 5:45 PM ETLatest filing: Oct 22, 2026Now: Oct 24, 2026, 5:04 AM ET

Sponsor Check › Person

JR
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Jonathan Rosenthal

Named as an officer, director or promoter on SEC Form D filings · CA · Mar 16, 2009 → Oct 11, 2024

9deals (issuers)
$397Mreported sold
287investors
20Form D filings
2009–2024years on file

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

The short version

Jonathan Rosenthal is listed as an executive officer, director, and promoter on 20 SEC Form D filings by 9 issuers between Mar 2009 and Oct 2024. Largest by amount reported sold: Saybrook Corporate Opportunity Fund LP (Santa Monica, CA — pooled investment fund — 2009; $133.9M reported sold to 46 investors), Global Infrastructure Solutions Inc. (Newport Beach, CA — industry reported as "Other" — 2017–2022; $131M reported sold to 147 investors), SAYBROOK CORPORATE OPPORTUNITY FUND II, L.P. (Santa Monica, CA — pooled investment fund — 2011–2012; $100.7M reported sold to 33 investors), SAYBROOK CORPORATE OPPORTUNITY FUND II FEEDER, L.P. (Santa Monica, CA — pooled investment fund — 2011–2012; $16.7M reported sold to 9 investors), OptzzChain, Inc. (Los Angeles, CA — other technology — 2018–2024; $5.85M reported sold to 35 investors) and 4 more (all listed below).

What this means A repeat sponsor — 9 separate companies raised money with this person listed as executive officer, director, and promoter, over about 15 years. Across those companies the filings report $397M sold in total.

Listed alongside Daniel Pimentel (7 shared filings), GRANT LANGSTON (6 shared filings), MARC POWERS (6 shared filings), JOHN O'HARE (5 shared filings), CHRISTOPHER BROTHERS (4 shared filings) and 35 others.

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

3 of the issuers belong to the sponsor group Saybrook Corporate (7 issuers, $415.5M reported sold, 2009–2023).

What this means A sponsor group is one team that sets up a new company for each deal. Saybrook Corporate has 7 companies on file and $415.5M 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) — 1 court case matching the name, 2 bankruptcy cases matching the name listed in Key records below.

What this means 3 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 20 public filings for Jonathan Rosenthal and found 14 differences: Form D filed 23 days after the first sale; Form D filed 16 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 Jonathan Rosenthal has not run yet — it is joining a line of 5,833 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

1 case: 1 closed (disposition not in docket feed)

Jonathan Rosenthal v. JHPDE Finance I, LLC closed
District Court, C.D. California · No. 2:24-cv-01406 · Filed Feb 1, 2024 · Closed Mar 24, 2025 · Nature of suit: 480 Consumer Credit · Cause: 15:1692 Fair Debt Collection Act
Role of Jonathan Rosenthal: Plaintiff · Outcome: Terminated 2025-03-24 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 5 federal dockets); 5 people with this name in Form D filings; court in the person's filing state (CA)
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, 2:17 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.

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 Jonathan Rosenthal..

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

2 cases: 2 closed (disposition not in docket feed)

Jonathan Rosenthal and Ilene S Rosenthal closed
United States Bankruptcy Court, S.D. Florida. · No. 10-14943 · Filed Feb 26, 2010 · Closed Aug 24, 2015
Role of Jonathan Rosenthal and Ilene S Rosenthal: Debtor · Outcome: Case closed 2015-08-24 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 5 federal dockets); 5 people with this name in Form D filings; court in FL (not a filing state)
Jonathan T. Rosenthal closed
United States Bankruptcy Court, S.D. Florida. · No. 00-18362 · Filed Sep 19, 2000 · Closed Sep 5, 2001
Role of Jonathan T. Rosenthal: Debtor · Outcome: Case closed 2001-09-05 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 5 federal dockets); 5 people with this name in Form D filings; court in FL (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, 2:17 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

14 differences found between the filings for Jonathan Rosenthal (compared 20 filings on Oct 24, 2026)

Note · Dec 12, 2022 – Jan 4, 2023

Form D filed 23 days after the first sale — ESP Technology & Logistics, Inc.

The filing says the first sale was Dec 12, 2022. The Form D was filed Jan 4, 2023 — 23 days later. The rule: a Form D is generally due within 15 days after the first sale, so this one is 8 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
Note · Jan 3, 2017 – Jan 26, 2017

Form D filed 23 days after the first sale — Bankruptcy Management Solutions, Inc.

The filing says the first sale was Jan 3, 2017. The Form D was filed Jan 26, 2017 — 23 days later. The rule: a Form D is generally due within 15 days after the first sale, so this one is 8 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
Note · Jan 1, 2017 – Jan 17, 2017

Form D filed 16 days after the first sale — Global Infrastructure Solutions Inc.

The filing says the first sale was Jan 1, 2017. The Form D was filed Jan 17, 2017 — 16 days later. The rule: a Form D is generally due within 15 days after the first sale, so this one is 1 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
Note · Jan 25, 2022 – Jul 5, 2022

Jonathan Rosenthal's role changed at OptzzChain, Inc.: executive officer, director, promoter → director, promoter

The Jan 25, 2022 filing lists Jonathan Rosenthal as executive officer, director, promoter; the Jul 5, 2022 Form D lists director, promoter.

What this means Roles on Form D are self-reported by the issuer. A change can mean a real change in who runs the company, or just a different box ticked. Ask who makes decisions today.

Sources
Note · Mar 1, 2018 – Jan 13, 2021

Jonathan Rosenthal's role changed at OptzzChain, Inc.: executive officer, director → executive officer, director, promoter

The Mar 1, 2018 filing lists Jonathan Rosenthal as executive officer, director; the Jan 13, 2021 Form D lists executive officer, director, promoter.

What this means Roles on Form D are self-reported by the issuer. A change can mean a real change in who runs the company, or just a different box ticked. Ask who makes decisions today.

Sources
Note · Oct 6, 2011 – Oct 11, 2024

4 offerings changed their target amount between filings

Offering amount changed between filings — OptzzChain, Inc. · Offering amount changed between filings — OptzzChain, Inc. · Offering amount changed between filings — Global Infrastructure Solutions Inc. · Offering amount lowered between filings — SAYBROOK CORPORATE OPPORTUNITY FUND II FEEDER, L.P.

What this means Targets change as deals grow or shrink. Ask whether later money has the same terms.

Sources
Note · Nov 2, 2007 – Oct 11, 2024

10 offerings have no amendment in the last 12 months and may still be open

No amendment in the last 12 months on an offering that may still be open — OptzzChain, Inc. (latest filing Oct 11, 2024) · No amendment in the last 12 months on an offering that may still be open — ESP Technology & Logistics, Inc. (latest filing Jan 4, 2023) · No amendment in the last 12 months on an offering that may still be open — OptzzChain, Inc. (latest filing Oct 12, 2022) · No amendment in the last 12 months on an offering that may still be open — Global Infrastructure Solutions Inc. (latest filing May 20, 2022) · No amendment in the last 12 months on an offering that may still be open — OptzzChain, Inc. (latest filing Jan 25, 2022) · and 5 more

What this means SEC rules expect a yearly amendment while an offering is still going. Ask the sponsor which of these raises have closed.

Sources
Note · Mar 1, 2018 – Jan 13, 2021

Industry group changed between filings — OptzzChain, Inc.

"Other" (Mar 1, 2018); then "Other Technology" (Jan 13, 2021 to Oct 11, 2024).

What this means The issuer described its business differently on different forms. Often it is just a different box ticked; sometimes the deal itself changed. Ask which business your money is in.

Sources
Note · Nov 8, 2021

Same name, different state: "Jonathan M. Rosenthal" (FL) is a separate record

This page covers filings where the address state is CA. A separate record, "Jonathan M. Rosenthal" with address state FL, is listed on 4 filings — most recently by Newfoundland Select Funds, LLC - Series I (Nov 8, 2021). Both records have filings in the same period (Nov 8, 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
Note · Apr 4, 2018

Same name, different state: "Jonathan Rosenthal" (NY) is a separate record

This page covers filings where the address state is CA. A separate record, "Jonathan Rosenthal" with address state NY, is listed on 1 filing — most recently by Thrive Agritech, Inc. (Apr 4, 2018). Both records have filings in the same period (Apr 4, 2018).

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 · Aug 8, 2016 – Jan 4, 2017

Same name, different state: "Jonathan Rosenthal" (MI) is a separate record

This page covers filings where the address state is CA. A separate record, "Jonathan Rosenthal" with address state MI, is listed on 7 filings — most recently by RSG6, LLC (Jan 4, 2017). Both records have filings in the same period (Aug 8, 2016 to Jan 4, 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 · Jan 22, 2010 – Jan 21, 2014

Same name, different state: "Jonathan L. Rosenthal" (MA) is a separate record

This page covers filings where the address state is CA. A separate record, "Jonathan L. Rosenthal" with address state MA, is listed on 5 filings — most recently by NEW ENGLAND LIFE INSURANCE CO (Jan 21, 2014). Both records have filings in the same period (Jan 22, 2010 to Jan 21, 2014).

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 · Feb 21, 2017 – May 12, 2022

Address moved from Los Angeles, CA to Newport Beach, CA — Global Infrastructure Solutions Inc.

The people listed on the Feb 21, 2017 filing give Los Angeles, CA; on the May 12, 2022 filing they give Newport Beach, CA.

What this means Businesses move; this just shows the two places and dates. If you were told one city and the forms say another, ask which is current.

Sources
Note · Jan 17, 2017 – Feb 21, 2017

Minimum investment changed between filings — Global Infrastructure Solutions Inc.

The Jan 17, 2017 filing lists a minimum of $250,008; the Feb 21, 2017 Form D/A lists $0.

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

2 of 14 offerings report sales commissions totalling $1,414,725; 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
Oct 11, 2024 D/A
OptzzChain, Inc.
File 021-496977
$0$0$0None listed on this filingEDGAR ↗
Jan 4, 2023 D
ESP Technology & Logistics, Inc.
File 021-469696
$0$0$0None listed on this filingEDGAR ↗
Oct 12, 2022 D/A
OptzzChain, Inc.
File 021-451079
$0$0$0None listed on this filingEDGAR ↗
May 20, 2022 D
Global Infrastructure Solutions Inc.
File 021-446399
$0$0$0None listed on this filingEDGAR ↗
May 12, 2022 D
Global Infrastructure Solutions Inc.
File 021-445374
$0$0$0None listed on this filingEDGAR ↗
Jan 25, 2022 D/A
OptzzChain, Inc.
File 021-386201
$156,100$0$0Rosenblatt Securities Inc. BrokerCheck CRD 18377 ↗
via Rosenblatt Securities Inc. (CRD 18377 ↗)
EDGAR ↗
Mar 1, 2018 D
OptzzChain, Inc.
File 021-306705
$0$0$0None listed on this filingEDGAR ↗
Feb 21, 2017 D/A
Global Infrastructure Solutions Inc.
File 021-278490
$0$0$0None listed on this filingEDGAR ↗
Jan 26, 2017 D
Bankruptcy Management Solutions, Inc.
File 021-279360
$0$0$0None listed on this filingEDGAR ↗
Apr 18, 2014 D
Portal Service Co
File 021-215904
$0$0$0None listed on this filingEDGAR ↗
Aug 15, 2013 D
SCOF II SIDE POCKET FUND, L.P.
File 021-201446
$0$0$0 (est.)
The investment manager is entitled to a management fee. The management fee is fully discussed in the Issuer's confidential offering materials.
None listed on this filingEDGAR ↗
Sep 28, 2012 D/A
SAYBROOK CORPORATE OPPORTUNITY FUND II, L.P.
File 021-166843
$1,258,625 (est.)$0 (est.)$0 (est.)
The general partner is entitled to a performance allocation. The investment manager is entitled to a management fee. The performance allocation and management fee are fully discussed in the Issuer's confidential offering materials.
CREDIT SUISSE SECURITIES (USA) LLC BrokerCheck CRD 816 ↗EDGAR ↗
Sep 28, 2012 D/A
SAYBROOK CORPORATE OPPORTUNITY FUND II FEEDER, L.P.
File 021-166844
$0 (est.)$0 (est.)$0 (est.)
"The Issuer is a feeder fund for Saybrook Corporate Opportunity Fund II, L.P. (the ""Fund""). The Issuer does not pay a direct perfomance allocation or management fee, but bears a pro rata indirect portion of any performance allocation or management fee."
CREDIT SUISSE SECURITIES (USA) LLC BrokerCheck CRD 816 ↗EDGAR ↗
Mar 16, 2009 D/A
Saybrook Corporate Opportunity Fund LP
File 021-111320
$0 (est.)$0$0 (est.)
The general partner and manager shall be entitled to annual compensation as described in the limited partnership agreement.
Crossroad Capital Partners no CRD number reported
via Southridge Investment Group, LLC (CRD 45531 ↗)

Wetherly Capital Group, LLC no CRD number reported
via DAV/Wetherly Financial L.P. (CRD 119951 ↗)
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 9

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

Other Technology

OptzzChain, Inc.

Los Angeles, CA · Mar 1, 2018 → Oct 11, 2024 · 7 filings
  • Oct 11, 2024 · D/A · $1,096,386 sold of $2,050,000 · 17 investors · min. No minimum reported · role: Director, Promoter EDGAR ↗
  • Nov 13, 2023 · D · $767,386 sold of $1,000,000 · 14 investors · min. No minimum reported · role: Director, Promoter EDGAR ↗
  • Oct 12, 2022 · D/A · $1,137,000 sold of $3,000,000 · 14 investors · min. No minimum reported · role: Director, Promoter EDGAR ↗
  • Jul 5, 2022 · D · $887,000 sold of $1,000,000 · 13 investors · min. No minimum reported · role: Director, Promoter EDGAR ↗
  • Jan 25, 2022 · D/A · $5,848,027 sold of $6,401,032 · 35 investors · min. No minimum reported · role: Executive Officer, Director, Promoter EDGAR ↗
  • Jan 13, 2021 · D · $4,758,029 sold of $6,401,032 · 31 investors · min. No minimum reported · role: Executive Officer, Director, Promoter EDGAR ↗
  • Mar 1, 2018 · D · $100,000 sold of $1,000,000 · 2 investors · min. No minimum reported · role: Executive Officer, Director EDGAR ↗

Raised $5.85M from 35 investors (100% of the $2.05M target) as of the latest filing. Jonathan is listed as director, promoter, 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: Other Technology / 506(b) (17,390 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 Technology

ESP Technology & Logistics, Inc.

Los Angeles, CA · Jan 4, 2023
  • Jan 4, 2023 · D · $2,679,986 sold of $5,000,000 · 10 investors · min. $49,998 · role: Executive Officer, Director EDGAR ↗

Raised $2.68M from 10 investors (54% of the $5M target) as of the latest filing. Jonathan 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 Technology / 506(b) (17,390 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

Global Infrastructure Solutions Inc.

Newport Beach, CA · Jan 17, 2017 → May 20, 2022 · 4 filings
  • May 20, 2022 · D · $14,423,709 sold of Indefinite · 28 investors · min. No minimum reported · role: Director EDGAR ↗
  • May 12, 2022 · D · $36,637,740 sold of $36,637,740 · 147 investors · min. $1 · role: Director EDGAR ↗
  • Feb 21, 2017 · D/A · $130,964,752 sold of Indefinite · 71 investors · min. No minimum reported · role: Director EDGAR ↗
  • Jan 17, 2017 · D · $116,450,127 sold of $116,450,127 · 27 investors · min. $250,008 · role: Director EDGAR ↗

Raised $131M from 147 investors as of the latest filing. Jonathan is listed as director 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: 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

Bankruptcy Management Solutions, Inc.

Irvine, CA · Jan 26, 2017
  • Jan 26, 2017 · D · $4,762,500 sold of $4,762,500 · 6 investors · min. No minimum reported · role: Director EDGAR ↗

Raised $4.76M from 6 investors (100% of the $4.76M target) as of the latest filing. Jonathan is listed as 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.

Oil and Gas

Portal Service Co

Kenmare, ND · Apr 18, 2014
  • Apr 18, 2014 · D · $1,500,000 sold of $1,500,000 · 1 investors · min. $1,500,000 · role: Director (Chairman of the Board) EDGAR ↗

Raised $1.5M from 1 investor (100% of the $1.5M target) as of the latest filing. Jonathan is listed as 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.

Pooled Investment Fund

SCOF II SIDE POCKET FUND, L.P.

Los Angeles, CA · Aug 15, 2013
  • Aug 15, 2013 · D · $0 sold of $25,000,000 · 0 investors · min. No minimum reported · role: Executive Officer, Promoter EDGAR ↗

No sales reported yet as of the latest filing. Jonathan is listed as executive officer, promoter.

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.

Pooled Investment Fund · group: Saybrook Corporate

SAYBROOK CORPORATE OPPORTUNITY FUND II FEEDER, L.P.

Santa Monica, CA · Oct 6, 2011 → Sep 28, 2012 · 2 filings
  • Sep 28, 2012 · D/A · $16,675,000 sold of $265,985,000 · 9 investors · min. No minimum reported · role: Executive Officer, Promoter EDGAR ↗
  • Oct 6, 2011 · D · $0 sold of $350,000,000 · 0 investors · min. No minimum reported · role: Executive Officer, Promoter EDGAR ↗

Raised $16.7M from 9 investors (6% of the $266M target) as of the latest filing. Jonathan is listed as executive officer, promoter on 2 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.

Pooled Investment Fund · group: Saybrook Corporate

SAYBROOK CORPORATE OPPORTUNITY FUND II, L.P.

Santa Monica, CA · Oct 6, 2011 → Sep 28, 2012 · 2 filings
  • Sep 28, 2012 · D/A · $100,690,000 sold of $350,000,000 · 33 investors · min. No minimum reported · role: Executive Officer, Promoter EDGAR ↗
  • Oct 6, 2011 · D · $0 sold of $350,000,000 · 0 investors · min. No minimum reported · role: Executive Officer, Promoter EDGAR ↗

Raised $100.7M from 33 investors (29% of the $350M target) as of the latest filing. Jonathan is listed as executive officer, promoter on 2 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.

Pooled Investment Fund · group: Saybrook Corporate

Saybrook Corporate Opportunity Fund LP

Santa Monica, CA · Mar 16, 2009
  • Mar 16, 2009 · D/A · $133,877,500 sold of Indefinite · 46 investors · min. $3,000,000 · role: Executive Officer (Managing Member of Saybrook Capital, LLC, General Partner of Issuer's General Partner) EDGAR ↗

Raised $133.9M from 46 investors as of the latest filing. Jonathan is listed as executive officer.

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.

Other pages with the same name (4)

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

People around Jonathan 40

Officers, directors, promoters and management entities named on the same filings, as of Oct 23, 2026, 5:45 PM ET. Showing the 40 with the most shared filings.

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

Daniel Pimentel

Executive Officer, Director, Promoter · 7 shared filings (2 issuers) · also on 1 other issuer

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

GRANT LANGSTON

Executive Officer, Director, Promoter · 6 shared filings (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

MARC POWERS

Director · 6 shared filings (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

JOHN O'HARE

Executive Officer, Promoter · 5 shared filings (3 issuers) · also on 1 other issuer

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Richard G. Newman

Executive Officer, Director · 4 shared filings (1 issuer) · also on 2 other issuers

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

KENNY SLUTSKY

Executive Officer, Promoter, Director · 4 shared filings (4 issuers)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

William Murdy

Director · 4 shared filings (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

CHRISTOPHER BROTHERS

Executive Officer, Promoter · 4 shared filings (2 issuers)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Richard Lee

Executive Officer · 2 shared filings (1 issuer) · also on 3 other issuers

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Eric Chen

Executive Officer · 2 shared filings (1 issuer) · also on 7 other issuers

Eric Chen is on 8 issuers in total — a repeat sponsor. Their page lists every one.

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

John M. Dionisio

Executive Officer, Director · 2 shared filings (1 issuer) · also on 1 other issuer

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Stewart Resnick

Director · 2 shared filings (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Steward Resnick

Director · 2 shared filings (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Vanessa Chang

Director · 2 shared filings (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Jeff Kissel

Executive Officer · 2 shared filings (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

John Dionsio

Director · 2 shared filings (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Deborah Butera

Executive Officer · 2 shared filings (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Anthony S. Shum

Director · 2 shared filings (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

William Jones

Director · 2 shared filings (1 issuer) · also on 1 other issuer

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Jon Peter Schotz

Executive Officer · 1 shared filing (1 issuer) · also on 4 other issuers

Jon Peter Schotz is on 5 issuers in total — a repeat sponsor. Their page lists every one.

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

Jonathan Thomas

Executive Officer · 1 shared filing (1 issuer) · also on 2 other issuers

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

William Haan

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

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Andrew Schultz

Director · 1 shared filing (1 issuer) · also on 1 other issuer

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Robert M. Stophlet

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

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Said Al-Alaoui

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

DZ
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Person

Daniel Eric Zethren

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Bryan Hursh

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Patrick McMahon

Director · 1 shared filing (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Eugene Davis

Director · 1 shared filing (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Cory Clemmons

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Ron Jacobs

Director · 1 shared filing (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Steve Moore

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

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Rod Ennico

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Marshall Merriman

Director · 1 shared filing (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Suzanne Cutler

Director · 1 shared filing (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Hemali Hyas

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

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Dan Pimentel

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

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

AR
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Person

Aaron Rosenthal

Director · 1 shared filing (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

Brendan Wesdock

Director · 1 shared filing (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

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

MARK LOUCHHEIM

Director · 1 shared filing (1 issuer)

Listed on the same filings as Jonathan Rosenthal. Their page shows their other deals.

The team behind the deals

Sponsor group

Saybrook Corporate

7 issuers · 13 filings · $415.5M reported sold · 2009–2023

One team, 7 deal companies. Jonathan Rosenthal 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 Jonathan Rosenthal.

Same business address

51 other issuers file from the same address (first 50 shown)

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 9 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)

5 Regulation Crowdfunding filings — tap to see each filing
SourceFiledFormIssuerAmount offered (as reported)Amount sold (as reported)Matched on
EDGAR ↗Apr 22, 2025
File 020-35335
Regulation Crowdfunding progress update (Form C-U)
Progress update filed · deadline Apr 21, 2025
OptzzChain, Inc.
WILMINGTON, DE
$20,000 target · $1,235,000 maximum
via StartEngine Primary, LLC
Not reported on this formsigner name on this filing (Jonathan Rosenthal) + listed as a related person on Form D filings of the same issuer (CIK 1732981) · 85%
EDGAR ↗Mar 21, 2025
File 020-35335
Regulation Crowdfunding offering — amendment (Form C/A)
Amendment filed · deadline Apr 21, 2025
OptzzChain, Inc.
WILMINGTON, DE
$20,000 target · $1,235,000 maximum
via StartEngine Primary, LLC
Not reported on this formsigner name on this filing (Jonathan Rosenthal) + listed as a related person on Form D filings of the same issuer (CIK 1732981) · 85%
EDGAR ↗Mar 21, 2025
File 020-35335
Regulation Crowdfunding offering — amendment (Form C/A)
Amendment filed · deadline Mar 24, 2025
Warehouse Exchange by OptzzChain, Inc.
Wilmington, DE
$20,000 target · $1,235,000 maximum
via StartEngine Primary, LLC
Not reported on this formsigner name on this filing (Jonathan Rosenthal) + listed as a related person on Form D filings of the same issuer (CIK 1732981) · 85%
EDGAR ↗Feb 18, 2025
File 020-35335
Regulation Crowdfunding offering — amendment (Form C/A)
Amendment filed · deadline Mar 24, 2025
Warehouse Exchange by OptzzChain, Inc.
Wilmington, DE
$20,000 target · $1,235,000 maximum
via StartEngine Primary, LLC
Not reported on this formsigner name on this filing (Jonathan Rosenthal) + listed as a related person on Form D filings of the same issuer (CIK 1732981) · 85%
EDGAR ↗Dec 23, 2024
File 020-35335
Regulation Crowdfunding offering (Form C)
Offering filed · deadline Mar 24, 2025
OptzzChain, Inc.
Wilmington, DE
$124,000 target · $1,235,000 maximum
via StartEngine Primary, LLC
Not reported on this formsigner name on this filing (Jonathan Rosenthal) + listed as a related person on Form D filings of the same issuer (CIK 1732981) · 85%

Amounts are as reported by the issuer on the form; Regulation Crowdfunding forms report a target and maximum, not sales. Sources 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 · Last checked Oct 23, 2026, 8:41 PM ET.

Property records none — individuals are not matched

Property records are matched to companies only, never to individuals, so none are matched to Jonathan Rosenthal 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 9 issuers this person is listed on — nothing matched.

Public profiles and social

Websites and social links of the issuers Jonathan Rosenthal is listed on, as found in their SEC filings (Form C, Reg A, Form ADV, EDGAR profile) or on the sponsor's own site; none belongs to the person unless the sponsor's site says so. Checked Oct 24, 2026.

Look further

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

Found on the sponsor's own site

company.warehouseexchange.com ↗ found on OptzzChain, Inc. (company.warehouseexchange.com — Form C 0001665160-25-000741 (issuer website as filed))

Change history

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