Sponsor Check › Person
Related person on Form D filings · address states/countries as listed: MA, Germany (as filed: 2M) · listed Sep 20, 2010 → Oct 4, 2017
Data last updated: Oct 23, 2026, 5:45 PM ET · Courts (RECAP) last checked: Oct 23, 2026, 11:58 PM ET · 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.
None found in sources searched.
Sources searched: CourtListener bulk data (RECAP dockets as of 2026-09-30) — federal district + bankruptcy courts; live RECAP re-check pending. State courts: not yet searched. PACER: not searched. · Last checked Oct 23, 2026, 11:58 PM ET.
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.
Not yet searched.
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None found in sources searched.
Sources searched: Federal bankruptcy courts via CourtListener / RECAP archive (federal district courts, federal bankruptcy courts). State courts: not yet searched. PACER: not searched (RECAP only). · Last checked Oct 23, 2026, 11:58 PM ET.
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.
1 of 9 offerings reports sales commissions totalling $1,097,026; 1 reports finder's fees totalling $67,495; 5 report proceeds to related persons totalling $8,898,000. (includes amounts the issuer reported as estimates)
| Source | Offering (latest filing) | Sales commissions | Finder's fees | To insiders | Paid to sell it |
|---|---|---|---|---|---|
| EDGAR ↗ | Oct 4, 2017 D File 021-295986 | $1,097,026 (est.) | $67,495 (est.) | $948,000 (est.) The Issuer expects to use approximately $948,000 of the proceeds for salary and other compensation to the Issuer's executive officers and directors. | Piper Jaffray & Co. BrokerCheck CRD 665 ↗ |
| EDGAR ↗ | May 28, 2014 D File 021-218122 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Feb 19, 2014 D File 021-212149 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Aug 27, 2013 D File 021-201905 | $0 | $0 | $1,600,000 (est.) | None listed on this filing |
| EDGAR ↗ | Sep 11, 2012 D File 021-183946 | $0 | $0 | $1,600,000 (est.) | None listed on this filing |
| EDGAR ↗ | Apr 24, 2012 D File 021-177160 | $0 | $0 | $4,000,000 (est.) | None listed on this filing |
| EDGAR ↗ | Aug 11, 2011 D File 021-164293 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Jul 29, 2011 D File 021-163679 | $0 | $0 | $0 (est.) | None listed on this filing |
| EDGAR ↗ | Sep 20, 2010 D File 021-147964 | $0 | $0 | $750,000 (est.) | 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 ↗ | Acer Therapeutics Inc. group: Acer Therapeutics | Director | Oct 4, 2017 | D | $15,674,384 similar: $1,694,259–$16,000,000 | $15,674,384 | 10 similar: 1–13 | No minimum reported similar: $10,000–$55,000 |
| EDGAR ↗ | PROTEON THERAPEUTICS INC | Director | May 28, 2014 | D | $29,565,934 similar: $2,000,000–$19,999,994 | $29,565,934 | 22 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | PROTEON THERAPEUTICS INC | Director | Feb 19, 2014 | D | $4,338,660 similar: $2,000,000–$19,999,994 | $4,338,660 | 17 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | ARGOS THERAPEUTICS INC | Director | Aug 27, 2013 | D | $60,000,000 | $22,007,404 | 25 | No minimum reported |
| EDGAR ↗ | ARGOS THERAPEUTICS INC | Director | Sep 11, 2012 | D | $15,978,125 | $15,978,125 | 24 | No minimum reported |
| EDGAR ↗ | ARGOS THERAPEUTICS INC | Director | Apr 24, 2012 | D | $50,000,000 | $9,021,875 | 30 | No minimum reported |
| EDGAR ↗ | PROTEON THERAPEUTICS INC | Director | Aug 11, 2011 | D | $15,183,371 | $15,183,371 | 19 | No minimum reported |
| EDGAR ↗ | ARGOS THERAPEUTICS INC | Director | Jul 29, 2011 | D | $3,500,000 | $3,500,000 | 29 | No minimum reported |
| EDGAR ↗ | ARGOS THERAPEUTICS INC | Director | Sep 20, 2010 | D | $6,000,000 | $4,852,074 | 27 | No minimum reported |
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: Pharmaceuticals / 506(b) (800 filings); Biotechnology / 506(b) (3,253 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.
Separate person records under the same name, not combined with this page. Each line says whether it is listed on an issuer this record is also listed on (a second identifier); where it is not, it 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 Hubert Birner. Source: the EDGAR rows in the table above.
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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