PartnerFacts
Data last updated: Oct 23, 2026, 5:45 PM ETLatest filing: Oct 22, 2026Now: Oct 24, 2026, 5:01 AM ET

Sponsor Check › Person

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

Arthur Simon

Named as an officer, director or promoter on SEC Form D filings · IL · Feb 28, 2018 → Jul 7, 2021

8deals (issuers)
$1.8Breported sold
132investors
28Form D filings
2018–2021years on file
Follow this personLook further ↓PDF

Data last updated Oct 23, 2026, 5:45 PM ET · Courts (RECAP) last checked: Oct 24, 2026, 2:26 AM ET · SEC enforcement last checked: covered by the index scan as of Oct 24, 2026, 2:50 AM ET

The short version

Arthur Simon is listed as an executive officer and director on 28 SEC Form D filings by 8 issuers between Feb 2018 and Jul 2021. Largest by amount reported sold: William Blair Emerging Markets Growth Fund LLC (Chicago, IL — pooled investment fund — 2018–2021; $855.1M reported sold to 51 investors), William Blair International Leaders Fund, LLC (Chicago, IL — pooled investment fund — 2018–2021; $472.1M reported sold to 12 investors), William Blair Emerging Markets Leaders Fund LLC (Chicago, IL — pooled investment fund — 2018–2020; $319.2M reported sold to 5 investors), William Blair Absolute Return Currency Fund LLC (Chicago, IL — pooled investment fund — 2018–2021; $110.1M reported sold to 8 investors), William Blair International Leaders Concentrated Fund LLC (Chicago, IL — pooled investment fund — 2018–2021; $26.7M reported sold to 10 investors) and 3 more (all listed below).

What this means A repeat sponsor — 8 separate companies raised money with this person listed as executive officer and director, over about 3 years. Across those companies the filings report $1.8B sold in total.

Listed alongside Stephanie Braming (28 shared filings), Advanced Strategies, LLC William Blair (27 shared filings) and William Blair Advanced Strategies, LLC (1 shared filing, management entity).

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

All 8 issuers belong to the sponsor group William Blair (32 issuers, $4.09B reported sold, 2009–2026).

What this means A sponsor group is one team that sets up a new company for each deal. William Blair has 32 companies on file and $4.09B 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) — 13 bankruptcy cases matching the name listed in Key records below.

What this means 13 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 28 public filings for Arthur Simon and found 14 differences, 1 worth asking the sponsor about: 7 people are no longer listed on a later 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 Arthur Simon has not run yet — it is joining a line of 4,252 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, 2:26 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 Arthur Simon..

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

13 cases: 2 open, 11 closed (disposition not in docket feed)

Arthur L Simon open
United States Bankruptcy Court, N.D. Illinois · No. 25-00221 · Filed Jan 8, 2025
Role of Arthur L Simon: Debtor · Outcome: Open — no termination date on the docket (bulk snapshot 2026-09-30) Docket on CourtListener ↗
same full name (a name found in 24 federal dockets); 3 people with this name in Form D filings; court in the person's filing state (IL)
Arthur L Simon open
United States Bankruptcy Court, N.D. Illinois · No. 25-00221 · Filed Jan 8, 2025
Role of Arthur L Simon: Debtor · Outcome: Open — no termination date on the docket (bulk snapshot 2026-09-30) Docket on CourtListener ↗
same full name (a name found in 24 federal dockets); 3 people with this name in Form D filings; court in the person's filing state (IL)
Arthur L Simon closed
United States Bankruptcy Court, E.D. New York · No. 1-14-40222 · Filed Jan 21, 2014 · Closed Apr 17, 2014
Role of Arthur L Simon: Debtor · Outcome: Case closed 2014-04-17 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 24 federal dockets); 3 people with this name in Form D filings; court in NY (not a filing state)
Arthur T Simon, Jr. closed
United States Bankruptcy Court, N.D. Illinois · No. 12-39897 · Filed Oct 8, 2012 · Closed Jan 18, 2013
Role of Arthur T Simon, Jr.: Debtor · Outcome: Case closed 2013-01-18 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 24 federal dockets); 3 people with this name in Form D filings; court in the person's filing state (IL)
Arthur Simon closed
United States Bankruptcy Court, S.D. Florida. · No. 09-13747 · Filed Mar 4, 2009 · Closed Jan 8, 2013
Role of Arthur Simon: Debtor · Outcome: Case closed 2013-01-08 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 24 federal dockets); 3 people with this name in Form D filings; court in FL (not a filing state)
Arthur D Simon closed
United States Bankruptcy Court, W.D. Washington · No. 04-42655 · Filed Mar 18, 2004 · Closed Jun 29, 2004
Role of Arthur D Simon: Debtor · Outcome: Case closed 2004-06-29 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 24 federal dockets); 3 people with this name in Form D filings; court in WA (not a filing state)
Arthur G Simon closed
United States Bankruptcy Court, C.D. California · No. 6:03-bk-26460 · Filed Nov 13, 2003 · Closed Mar 17, 2004
Role of Arthur G Simon: Debtor · Outcome: Case closed 2004-03-17 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 24 federal dockets); 3 people with this name in Form D filings; court in CA (not a filing state)
Arthur N. Simon and Cristine S. Simon closed
United States Bankruptcy Court, S.D. Florida. · No. 02-18905 · Filed Aug 27, 2002 · Closed Feb 28, 2003
Role of Arthur N. Simon and Cristine S. Simon: Debtor · Outcome: Case closed 2003-02-28 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 24 federal dockets); 3 people with this name in Form D filings; court in FL (not a filing state)
Arthur T Simon, Jr. and Noralea E. Simon closed
United States Bankruptcy Court, N.D. Indiana · No. 02-61063 · Filed Mar 13, 2002 · Closed Mar 7, 2003
Role of Arthur T Simon, Jr.: Debtor · Outcome: Case closed 2003-03-07 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 24 federal dockets); 3 people with this name in Form D filings; court in IN (not a filing state)
Arthur J Simon and Bernice Simon closed
United States Bankruptcy Court, C.D. California · No. 1:98-bk-18202 · Filed Jun 11, 1998 · Closed Sep 30, 1998
Role of Arthur J Simon and Bernice Simon: Debtor · Outcome: Case closed 1998-09-30 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 24 federal dockets); 3 people with this name in Form D filings; court in CA (not a filing state)
Arthur A. Simon and Linda J. Simon closed
United States Bankruptcy Court, E.D. Missouri · No. 96-49317 · Filed Nov 5, 1996 · Closed Feb 28, 1997
Role of Arthur A. Simon and Linda J. Simon: Debtor · Outcome: Case closed 1997-02-28 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 24 federal dockets); 3 people with this name in Form D filings; court in MO (not a filing state)
Arthur Simon, Sr. and Blondell W. Simon closed
United States Bankruptcy Court, E.D. Louisiana · No. 95-10501 · Filed Feb 10, 1995 · Closed Jul 14, 1995
Role of Arthur Simon, Sr.: Debtor · Outcome: Case closed 1995-07-14 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 24 federal dockets); 3 people with this name in Form D filings; court in LA (not a filing state)
Arthur Simon and Sophia L. Simon closed
United States Bankruptcy Court, M.D. Alabama · No. 94-02480 · Filed Jul 11, 1994 · Closed Feb 13, 1998
Role of Arthur Simon and Sophia L. Simon: Debtor · Outcome: Case closed 1998-02-13 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same full name (a name found in 24 federal dockets); 3 people with this name in Form D filings; court in AL (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, 2:26 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 Arthur Simon — 1 worth asking about (compared 28 filings on Oct 24, 2026)

Worth asking · Nov 18, 2020 – Jul 8, 2022

7 people are no longer listed on a later amendment

Arthur Simon is no longer listed on the Jul 8, 2022 amendment — William Blair International Leaders Fund, LLC · Arthur Simon is no longer listed on the Jul 8, 2022 amendment — William Blair Emerging Markets Growth Fund LLC · Arthur Simon is no longer listed on the Jul 1, 2022 amendment — William Blair International Leaders Concentrated Fund LLC · Arthur Simon is no longer listed on the Feb 7, 2022 amendment — William Blair Large Cap Core Fund LLC · Arthur Simon is no longer listed on the Feb 4, 2022 amendment — William Blair Global Leaders Equity Fund LLC · and 2 more

What this means People leave; the issuer lists only current officers, directors and promoters. Ask why and who replaced them.

Form D/A · Jul 7, 2021 ↗Form D/A · Jul 8, 2022 ↗Arthur Simon — PartnerFacts page ↗William Blair International Leaders Fund, LLC — PartnerFacts page ↗
Sources
Note · Dec 8, 2020 – Jan 6, 2021

Form D filed 29 days after the first sale — William Blair Large Cap Core Fund LLC

The filing says the first sale was Dec 8, 2020. The Form D was filed Jan 6, 2021 — 29 days later. The rule: a Form D is generally due within 15 days after the first sale, so this one is 14 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.

Form D · Jan 6, 2021 ↗William Blair Large Cap Core Fund LLC — PartnerFacts page ↗
Sources
Note · Mar 5, 2020 – Jul 7, 2021

4 role changes for the same people across filings

Arthur Simon's role changed at William Blair International Leaders Fund, LLC: executive officer → director · Arthur Simon's role changed at William Blair International Leaders Concentrated Fund LLC: executive officer → director · Arthur Simon's role changed at William Blair Emerging Markets Growth Fund LLC: executive officer → director · Arthur Simon's role changed at William Blair Absolute Return Currency Fund LLC: executive officer → director

What this means Roles on Form D are self-reported. Ask who runs the company today.

Form D/A · Jul 16, 2020 ↗Form D/A · Jul 7, 2021 ↗Arthur Simon — PartnerFacts page ↗William Blair International Leaders Fund, LLC — PartnerFacts page ↗
Sources
Note · Jul 7, 2021 – Jul 8, 2022

Offering amount changed between filings — William Blair International Leaders Fund, LLC

The Jul 7, 2021 filing says $500,000,000 offered; the Jul 8, 2022 Form D/A says an indefinite amount.

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.

Form D/A (earlier) · Jul 7, 2021 ↗Form D/A (later) · Jul 8, 2022 ↗William Blair International Leaders Fund, LLC — PartnerFacts page ↗
Sources
Note · Jan 6, 2021 – Feb 7, 2022

Offering amount changed between filings — William Blair Large Cap Core Fund LLC

The Jan 6, 2021 filing says an indefinite amount offered; the Feb 7, 2022 Form D/A says $500,000,000.

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.

Form D (earlier) · Jan 6, 2021 ↗Form D/A (later) · Feb 7, 2022 ↗William Blair Large Cap Core Fund LLC — PartnerFacts page ↗
Sources
Note · Feb 9, 2017 – Jul 18, 2018

Offering amount changed between filings — William Blair International Leaders Fund, LLC

The Feb 9, 2017 filing says $100,000,000 offered; the Jul 18, 2018 Form D/A says $500,000,000.

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.

Form D (earlier) · Feb 9, 2017 ↗Form D/A (later) · Jul 18, 2018 ↗William Blair International Leaders Fund, LLC — PartnerFacts page ↗
Sources
Note · Apr 27, 2018 – Jun 30, 2021

No amendment in the last 12 months on an offering that may still be open — William Blair Absolute Return Currency Fund LLC (latest filing Jun 30, 2021)

The latest filing for this offering is dated Jun 30, 2021 (first sale Apr 27, 2018). It reports $110,125,045 sold of an indefinite amount offered. No later amendment is in our index as of Oct 24, 2026.

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

Form D/A · Jun 30, 2021 ↗William Blair Absolute Return Currency Fund LLC — PartnerFacts page ↗
Sources
Note · Apr 27, 2018 – May 4, 2018

No amendment in the last 12 months on an offering that may still be open — William Blair Absolute Return Currency Fund LLC (latest filing May 4, 2018)

The latest filing for this offering is dated May 4, 2018 (first sale Apr 27, 2018). It reports $6,550,000 sold of an indefinite amount offered. No later amendment is in our index as of Oct 24, 2026.

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

Form D · May 4, 2018 ↗William Blair Absolute Return Currency Fund LLC — PartnerFacts page ↗
Sources
Note · Apr 26, 2019 – Apr 28, 2020

Minimum investment changed between filings — William Blair Absolute Return Currency Fund LLC

The Apr 26, 2019 filing lists a minimum of $0; the Apr 28, 2020 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.

Form D/A (earlier) · Apr 26, 2019 ↗Form D/A (later) · Apr 28, 2020 ↗William Blair Absolute Return Currency Fund LLC — PartnerFacts page ↗
Sources
Note · Mar 8, 2019 – Mar 5, 2020

Minimum investment changed between filings — William Blair Emerging Markets Growth Fund LLC

The Mar 8, 2019 filing lists a minimum of $0; the Mar 5, 2020 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.

Form D/A (earlier) · Mar 8, 2019 ↗Form D/A (later) · Mar 5, 2020 ↗William Blair Emerging Markets Growth Fund LLC — PartnerFacts page ↗
Sources
Note · Mar 5, 2019 – Mar 5, 2020

Minimum investment changed between filings — William Blair International Leaders Concentrated Fund LLC

The Mar 5, 2019 filing lists a minimum of $0; the Mar 5, 2020 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.

Form D/A (earlier) · Mar 5, 2019 ↗Form D/A (later) · Mar 5, 2020 ↗William Blair International Leaders Concentrated Fund LLC — PartnerFacts page ↗
Sources
Note · Oct 16, 2018 – Oct 11, 2019

Minimum investment changed between filings — William Blair Emerging Markets Leaders Fund LLC

The Oct 16, 2018 filing lists a minimum of $0; the Oct 11, 2019 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.

Form D (earlier) · Oct 16, 2018 ↗Form D/A (later) · Oct 11, 2019 ↗William Blair Emerging Markets Leaders Fund LLC — PartnerFacts page ↗
Sources
Note · Oct 25, 2018 – Oct 11, 2019

Minimum investment changed between filings — William Blair Emerging Markets Leaders Concentrated Fund LLC

The Oct 25, 2018 filing lists a minimum of $0; the Oct 11, 2019 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.

Form D/A (earlier) · Oct 25, 2018 ↗Form D/A (later) · Oct 11, 2019 ↗William Blair Emerging Markets Leaders Concentrated Fund LLC — PartnerFacts page ↗
Sources
Note · Jul 18, 2018 – Jul 12, 2019

Minimum investment changed between filings — William Blair International Leaders Fund, LLC

The Jul 18, 2018 filing lists a minimum of $0; the Jul 12, 2019 Form D/A lists $5,000,000.

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

Form D/A (earlier) · Jul 18, 2018 ↗Form D/A (later) · Jul 12, 2019 ↗William Blair International Leaders Fund, LLC — PartnerFacts page ↗
Sources
What is compared

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

5. Money to insiders

None reported on 9 offerings — no sales commissions, finder's fees or proceeds to insiders

Per-offering detail
Offering (latest filing)Sales commissionsFinder's feesTo insidersPaid to sell itSource
Jul 7, 2021 D/A
William Blair International Leaders Fund, LLC
File 021-280421
$0$0$0None listed on this filingEDGAR ↗
Jun 30, 2021 D/A
William Blair International Leaders Concentrated Fund LLC
File 021-306687
$0$0$0None listed on this filingEDGAR ↗
Jun 30, 2021 D/A
William Blair Emerging Markets Growth Fund LLC
File 021-309274
$0$0$0None listed on this filingEDGAR ↗
Jun 30, 2021 D/A
William Blair Absolute Return Currency Fund LLC
File 021-311648
$0$0$0None listed on this filingEDGAR ↗
Jan 6, 2021 D
William Blair Large Cap Core Fund LLC
File 021-385344
$0$0$0None listed on this filingEDGAR ↗
Dec 26, 2020 D/A
William Blair Global Leaders Equity Fund LLC
File 021-356840
$0$0$0None listed on this filingEDGAR ↗
Nov 18, 2020 D/A
William Blair Emerging Markets Leaders Concentrated Fund LLC
File 021-296830
$0$0$0None listed on this filingEDGAR ↗
Nov 18, 2020 D/A
William Blair Emerging Markets Leaders Fund LLC
File 021-323678
$0$0$0None listed on this filingEDGAR ↗
May 4, 2018 D
William Blair Absolute Return Currency Fund LLC
File 021-311640
$0$0$0None listed on this filingEDGAR ↗

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

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

Deals 8

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

WB
Pooled Investment Fund · group: William Blair

William Blair International Leaders Fund, LLC

Chicago, IL · Jul 18, 2018 → Jul 7, 2021 · 4 filings
  • Jul 7, 2021 · D/A · $328,213,436 sold of $500,000,000 · 7 investors · min. $5,000,000 · role: Director (Director of the Managing Member of the Issuer) EDGAR ↗
  • Jul 16, 2020 · D/A · $231,454,000 sold of $500,000,000 · 5 investors · min. $5,000,000 · role: Executive Officer (General Counsel; Executive Committee Member of Managing Member of the Issuer) EDGAR ↗
  • Jul 12, 2019 · D/A · $123,974,000 sold of $500,000,000 · 4 investors · min. $5,000,000 · role: Executive Officer (General Counsel; Executive Committee Member of Managing Member of the Issuer) EDGAR ↗
  • Jul 18, 2018 · D/A · $116,659,000 sold of $500,000,000 · 3 investors · min. No minimum reported · role: Executive Officer (General Counsel; Executive Committee Member of Managing Member of the Issuer) EDGAR ↗

Raised $472.1M from 12 investors (94% of the $500M target) as of the latest filing. Arthur is listed as director, executive officer on 4 filings for this deal.

Latest filing on EDGAR ↗
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.

WB
Pooled Investment Fund · group: William Blair

William Blair Emerging Markets Growth Fund LLC

Chicago, IL · Apr 4, 2018 → Jun 30, 2021 · 4 filings
  • Jun 30, 2021 · D/A · $429,307,000 sold of Indefinite · 37 investors · min. $1,000,000 · role: Director (Director of the Managing Member of the Issuer) EDGAR ↗
  • Mar 5, 2020 · D/A · $122,392,000 sold of Indefinite · 22 investors · min. $1,000,000 · role: Executive Officer (General Counsel, Executive Committee Member of Managing Member of Issuer) EDGAR ↗
  • Mar 8, 2019 · D/A · $105,332,000 sold of Indefinite · 18 investors · min. No minimum reported · role: Executive Officer (General Counsel, Executive Committee Member of Managing Member of Issuer) EDGAR ↗
  • Apr 4, 2018 · D · $30,550,000 sold of Indefinite · 2 investors · min. No minimum reported · role: Executive Officer (General Counsel, Executive Committee Member of Managing Member of Issuer) EDGAR ↗

Raised $855.1M from 51 investors as of the latest filing. Arthur is listed as director, executive officer on 4 filings for this deal.

Latest filing on EDGAR ↗
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.

WB
Pooled Investment Fund · group: William Blair

William Blair Absolute Return Currency Fund LLC

Chicago, IL · May 4, 2018 → Jun 30, 2021 · 5 filings
  • Jun 30, 2021 · D/A · $110,125,045 sold of Indefinite · 8 investors · min. $1,000,000 · role: Director (Director of the Managing Member of the Issuer) EDGAR ↗
  • Apr 28, 2020 · D/A · $10,075,045 sold of Indefinite · 6 investors · min. $1,000,000 · role: Executive Officer (General Counsel, Executive Committee Member of Managing Member of Issuer) EDGAR ↗
  • Apr 26, 2019 · D/A · $6,850,000 sold of Indefinite · 6 investors · min. No minimum reported · role: Executive Officer (General Counsel, Executive Committee Member of Managing Member of Issuer) EDGAR ↗
  • May 4, 2018 · D · $6,550,000 sold of Indefinite · 4 investors · min. No minimum reported · role: Executive Officer (General Counsel, Executive Committee Member of Managing Member of Issuer) EDGAR ↗
  • May 4, 2018 · D · $6,550,000 sold of Indefinite · 4 investors · min. No minimum reported · role: Executive Officer (General Counsel, Executive Committee Member of Managing Member of Issuer) EDGAR ↗

Raised $110.1M from 8 investors as of the latest filing. Arthur is listed as director, executive officer on 5 filings for this deal.

Latest filing on EDGAR ↗
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.

WB
Pooled Investment Fund · group: William Blair

William Blair International Leaders Concentrated Fund LLC

Chicago, IL · Feb 28, 2018 → Jun 30, 2021 · 5 filings
  • Jun 30, 2021 · D/A · $26,700,000 sold of Indefinite · 10 investors · min. $1,000,000 · role: Director (Director of the Managing Member of the Issuer) EDGAR ↗
  • Mar 5, 2020 · D/A · $5,100,000 sold of Indefinite · 2 investors · min. $1,000,000 · role: Executive Officer (General Counsel, Executive Committee Member of Managing Member of Issuer) EDGAR ↗
  • Mar 5, 2019 · D/A · $5,100,000 sold of Indefinite · 2 investors · min. No minimum reported · role: Executive Officer (General Counsel, Executive Committee Member of Managing Member of Issuer) EDGAR ↗
  • May 25, 2018 · D/A · $5,100,000 sold of Indefinite · 2 investors · min. No minimum reported · role: Executive Officer (General Counsel, Executive Committee Member of Managing Member of Issuer) EDGAR ↗
  • Feb 28, 2018 · D · $5,100,000 sold of Indefinite · 2 investors · min. No minimum reported · role: Executive Officer (General Counsel, Executive Committee Member of Managing Member of Issuer) EDGAR ↗

Raised $26.7M from 10 investors as of the latest filing. Arthur is listed as director, executive officer on 5 filings for this deal.

Latest filing on EDGAR ↗
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.

WB
Pooled Investment Fund · group: William Blair

William Blair Large Cap Core Fund LLC

Chicago, IL · Jan 6, 2021
  • Jan 6, 2021 · D · $2,250,000 sold of Indefinite · 15 investors · min. $1,000,000 · role: Executive Officer (General Counsel; Executive Committee Member of Managing Member of the Issuer.) EDGAR ↗

Raised $8.55M from 19 investors as of the latest filing. Arthur is listed as executive officer.

Latest filing on EDGAR ↗
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.

WB
Pooled Investment Fund · group: William Blair

William Blair Global Leaders Equity Fund LLC

Chicago, IL · Dec 31, 2019 → Dec 26, 2020 · 2 filings
  • Dec 26, 2020 · D/A · $4,625,000 sold of $100,000,000 · 13 investors · min. $1,000,000 · role: Executive Officer (General Counsel and Executive Committee Member of the Managing Member of the Issuer) EDGAR ↗
  • Dec 31, 2019 · D · $2,700,000 sold of $100,000,000 · 11 investors · min. $1,000,000 · role: Executive Officer (General Counsel and Executive Committee Member of the Managing Member of the Issuer) EDGAR ↗

Raised $5.03M from 14 investors (5% of the $100M target) as of the latest filing. Arthur is listed as executive officer on 2 filings for this deal.

Latest filing on EDGAR ↗
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.

WB
Pooled Investment Fund · group: William Blair

William Blair Emerging Markets Leaders Fund LLC

Chicago, IL · Oct 16, 2018 → Nov 18, 2020 · 3 filings
  • Nov 18, 2020 · D/A · $188,393,335 sold of Indefinite · 3 investors · min. $1,000,000 · role: Executive Officer (General Counsel and Executive Committee Member of the Managing Member of the Issuer) EDGAR ↗
  • Oct 11, 2019 · D/A · $186,393,000 sold of Indefinite · 3 investors · min. $1,000,000 · role: Executive Officer (General Counsel and Executive Committee Member of the Managing Member of the Issuer) EDGAR ↗
  • Oct 16, 2018 · D · $180,093,335 sold of Indefinite · 3 investors · min. No minimum reported · role: Executive Officer (General Counsel and Executive Committee Member of the Managing Member of the Issuer) EDGAR ↗

Raised $319.2M from 5 investors as of the latest filing. Arthur is listed as executive officer on 3 filings for this deal.

Latest filing on EDGAR ↗
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.

WB
Pooled Investment Fund · group: William Blair

William Blair Emerging Markets Leaders Concentrated Fund LLC

Chicago, IL · May 25, 2018 → Nov 18, 2020 · 4 filings
  • Nov 18, 2020 · D/A · $7,282,000 sold of $100,000,000 · 13 investors · min. $1,000,000 · role: Executive Officer (General Counsel,Executive Committee Member and Director of the Managing Member of the Issuer) EDGAR ↗
  • Oct 11, 2019 · D/A · $6,107,000 sold of $100,000,000 · 7 investors · min. $1,000,000 · role: Executive Officer (General Counsel,Executive Committee Member and Director of the Managing Member of the Issuer) EDGAR ↗
  • Oct 25, 2018 · D/A · $5,957,000 sold of $100,000,000 · 7 investors · min. No minimum reported · role: Executive Officer (General Counsel,Executive Committee Member and Director of the Managing Member of the Issuer) EDGAR ↗
  • May 25, 2018 · D/A · $875,000 sold of $100,000,000 · 5 investors · min. No minimum reported · role: Executive Officer (General Counsel and Executive Committee Member of the Managing Member of the Issuer) EDGAR ↗

Raised $7.28M from 13 investors (7% of the $100M target) as of the latest filing. Arthur is listed as executive officer on 4 filings for this deal.

Latest filing on EDGAR ↗
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 (2)

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

  • Arthur J. Simon — IL, 3 issuers, Jul 11, 2012 → Sep 22, 2021 · no shared issuer
  • ARTHUR R. SIMON — IL, 3 issuers, Jul 18, 2018 → Jul 9, 2021 · no shared issuer

People around Arthur 3

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

WB
Management entity

William Blair Advanced Strategies, LLC

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

William Blair Advanced Strategies, LLC is on 5 issuers in total — a repeat sponsor. Their page lists every one.

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

Stephanie Braming

Executive Officer, Director · 28 shared filings (8 issuers) · also on 7 other issuers

Stephanie Braming is on 15 issuers in total — a repeat sponsor. Their page lists every one.

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

Advanced Strategies, LLC William Blair

Promoter, Executive Officer · 27 shared filings (7 issuers) · also on 16 other issuers

Advanced Strategies, LLC William Blair is on 23 issuers in total — a repeat sponsor. Their page lists every one.

The team behind the deals

WB
Sponsor group

William Blair

32 issuers · 200 filings · $4.09B reported sold · 2009–2026

One team, 32 deal companies. Arthur Simon is listed on 8 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 Arthur Simon.

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 8 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 Arthur Simon 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 8 issuers this person is listed on — nothing matched.

Public profiles and social

Websites and social links of the issuers Arthur Simon is listed on: none on file. No website or social profile named in William Blair Emerging Markets Leaders Fund LLC's SEC filings (Form C, Reg A, Form ADV; checked Oct 24, 2026). Web search for this name: #78,687 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 (Chicago, IL). Each opens in a new tab; what you find there is not verified by PartnerFacts.

Social and web

LinkedIn people search ↗Instagram ↗X (Twitter) ↗Facebook ↗YouTube ↗Google ↗Google Images ↗Google News ↗Meta Ad Library ↗

Courts

CourtListener / RECAP (federal) ↗PACER case locator (federal, login) ↗Cook County Clerk of Court case search ↗

Securities regulators

SEC EDGAR full-text search ↗SEC action look-up ↗FINRA BrokerCheck ↗SEC IAPD adviser search ↗

Business registries

Illinois Secretary of State business search ↗OpenCorporates ↗

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 Arthur Simon appears on a new Form D, or when a court case or SEC action is matched to them. See plans →