Sponsor Check › Person
Related person on Form D filings · address states as listed: CA, TX · listed Jun 23, 2010 → Jan 17, 2018
Data last updated: Oct 23, 2026, 5:45 PM ET · Courts (RECAP) last checked: not yet · SEC enforcement last checked: not yet
Privacy: business-related public information only. Residential addresses are never shown; only the state from the filing.
The five facts investors ask about first. Each section states what was searched and when. Items still in human review are not shown.
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Sources to be searched: CourtListener / RECAP archive (federal district courts, federal bankruptcy courts). State courts: not yet searched. PACER: not searched (RECAP only). · Search queued. Results are added automatically; check back later or follow this page to be notified.
State courts: not yet searched. 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.
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. — not yet searched; 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: not yet searched.
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Search queued. Results are added automatically; check back later or follow this page to be notified.
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Sources to be searched: Federal bankruptcy courts via CourtListener / RECAP archive (federal district courts, federal bankruptcy courts). State courts: not yet searched. PACER: not searched (RECAP only). · Search queued. Results are added automatically; check back later or follow this page to be notified.
State courts: not yet searched. 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.
Comparisons are made for sponsors and sponsor groups, not individual people.
0 of 14 offerings report sales commissions; 1 reports finder's fees totalling $989,375; 0 report proceeds to related persons. (includes amounts the issuer reported as estimates)
| Source | Offering (latest filing) | Sales commissions | Finder's fees | To insiders | Paid to sell it |
|---|---|---|---|---|---|
| EDGAR ↗ | Jan 29, 2021 D File 021-387821 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Jan 19, 2021 D File 021-386734 | $0 | $0 | $0 The Issuer is obligated to pay a management fee to the General Partner (or an affiliate thereof). | None listed on this filing |
| EDGAR ↗ | Sep 5, 2018 D File 021-320647 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Jan 17, 2018 D/A File 021-303350 | $0 | $989,375 (est.) | $0 The Issuer is obligated to pay a management fee to the General Partner (or an affiliate thereof). | Aqueduct Capital Group, LLC BrokerCheck CRD 131452 ↗ |
| EDGAR ↗ | Jan 16, 2018 D File 021-303325 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | May 15, 2014 D File 021-217426 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Mar 21, 2013 D File 021-193751 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Feb 11, 2013 D File 021-191627 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | May 9, 2012 D File 021-177919 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Mar 23, 2012 D/A File 021-172937 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Sep 21, 2011 D File 021-166136 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Nov 16, 2010 D File 021-150589 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Jun 23, 2010 D File 021-143870 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Apr 1, 2009 D File 021-58840 | $0 | $0 | $0 | None listed on this filing |
As reported by the issuer on Form D (Items 12–15), 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).
| Source | Issuer | Role | Filed | Form | Offering | Sold | Investors | Min. investment |
|---|---|---|---|---|---|---|---|---|
| EDGAR ↗ | Maverick Advisors Fund, L.P. group: Maverick | Executive Officer Managing Partner of Maverick Capital Ventures, LLC, the General Partner to Issuer | Jan 29, 2021 | D | $117,749,041 similar: $155,000–$5,250,000 | $117,400,233 | 27 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | Maverick Ventures Investment Fund, L.P. group: Maverick | Executive Officer Managing Partner of Maverick Capital Ventures, LLC, the General Partner to Issuer | Jan 19, 2021 | D | $116,779,377 similar: $155,000–$5,250,000 | $116,779,377 | 38 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | 1Life Healthcare Inc group: 1life Healthcare | Director | Sep 5, 2018 | D | $249,999,991 similar: $1,120,617–$11,272,500 | $220,000,000 | 1 similar: 3–24 | No minimum reported similar: $10,000–$70,605 |
| EDGAR ↗ | Maverick Ventures Investment Fund, L.P. group: Maverick | Executive Officer Managing Partner of Maverick Capital Ventures, LLC, the General Partner to Issuer | Jan 17, 2018 | D/A | $130,075,512 similar: $155,000–$5,250,000 | $130,075,512 | 31 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | Maverick Ventures Investment Fund, L.P. group: Maverick | Executive Officer Managing Partner of Maverick Capital Ventures, LLC, the General Partner to Issuer | Jan 16, 2018 | D | $130,075,512 similar: $155,000–$5,250,000 | $130,075,512 | 31 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | Maverick Advisors Fund, L.P. group: Maverick | Executive Officer Managing Partner of Maverick Capital Ventures, LLC, the General Partner to Issuer | Jan 16, 2018 | D | $65,005,407 similar: $155,000–$5,250,000 | $65,005,407 | 14 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | 1Life Healthcare Inc group: 1life Healthcare | Director | May 15, 2014 | D | $40,499,970 similar: $1,120,617–$11,272,500 | $40,499,970 | 16 similar: 3–24 | No minimum reported similar: $10,000–$70,605 |
| EDGAR ↗ | 1Life Healthcare Inc group: 1life Healthcare | Director | Mar 21, 2013 | D | $29,999,996 similar: $1,120,617–$11,272,500 | $29,999,996 | 8 similar: 3–24 | No minimum reported similar: $10,000–$70,605 |
| EDGAR ↗ | PACIFIC BIOSCIENCES OF CALIFORNIA, INC. | Director | Feb 11, 2013 | D | $20,500,000 similar: $1,100,015–$10,001,163 | $20,500,000 | 4 similar: 2–14 | No minimum reported similar: $5,000–$50,000 |
| EDGAR ↗ | CASTLIGHT HEALTH, INC. | Director | May 9, 2012 | D | $99,999,969 similar: $829,831–$9,999,998 | $99,999,969 | 35 similar: 2–15 | No minimum reported similar: $10,000–$54,310 |
| EDGAR ↗ | RADISPHERE NATIONAL RADIOLOGY GROUP, INC. | Director | Mar 23, 2012 | D/A | $15,000,006 similar: $829,831–$9,999,998 | $15,000,006 | 3 similar: 2–15 | $5,000 similar: $10,000–$54,310 |
| EDGAR ↗ | RADISPHERE NATIONAL RADIOLOGY GROUP, INC. | Director | Feb 6, 2012 | D | $15,000,006 similar: $829,831–$9,999,998 | $10,000,004 | 3 similar: 2–15 | $5,000 similar: $10,000–$54,310 |
| EDGAR ↗ | 1Life Healthcare Inc group: 1life Healthcare | Director | Sep 21, 2011 | D | $20,000,000 similar: $1,120,617–$11,272,500 | $19,999,997 | 7 similar: 3–24 | No minimum reported similar: $10,000–$70,605 |
| EDGAR ↗ | RADISPHERE NATIONAL RADIOLOGY GROUP, INC. | Director | Nov 16, 2010 | D | $27,500,005 similar: $829,831–$9,999,998 | $27,500,005 | 5 similar: 2–15 | $5,000 similar: $10,000–$54,310 |
| EDGAR ↗ | CASTLIGHT HEALTH, INC. | Director | Jun 23, 2010 | D | $59,999,997 similar: $829,831–$9,999,998 | $59,999,997 | 15 similar: 2–15 | $4,111 similar: $10,000–$54,310 |
| EDGAR ↗ | AMBRX INC | Director | Apr 1, 2009 | D | $10,000,000 similar: $2,000,000–$19,999,994 | $10,000,000 | 1 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
Every row is a Form D or D/A on which the issuer listed this name as a related person. Related-person names are matched on first + last name and the address state on the filing; records that share a name but could not be tied together by a second identifier are listed separately below.
"Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years (5 industry/exemption sets on this page); 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.
Not linked to this profile — a second identifier (same issuer, same sponsor group) was not found. Could be the same person or a different one.
People and management entities the issuers listed as related persons on the same Form D filings as David Singer. Source: the EDGAR rows in the table above. Showing the 40 with the most shared filings.
None found in sources searched.
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.
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