Sponsor Check › Person
Related person on Form D filings · address states as listed: CA, L2 · listed Jun 6, 2017 → Oct 31, 2023
Data last updated: Oct 23, 2026, 5:45 PM ET · Courts (RECAP) last checked: Oct 24, 2026, 12:02 AM 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 24, 2026, 12:02 AM 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.
Search queued. Results are added automatically; check back later or follow this page to be notified.
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 24, 2026, 12:02 AM 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.
4 of 10 offerings report sales commissions totalling $8,468,884; 0 report finder's fees; 1 reports proceeds to related persons totalling $79,748. (includes amounts the issuer reported as estimates)
| Source | Offering (latest filing) | Sales commissions | Finder's fees | To insiders | Paid to sell it |
|---|---|---|---|---|---|
| EDGAR ↗ | Oct 31, 2023 D File 021-496040 | $6,377,484 | $0 | $0 | Cowen and Company, LLC BrokerCheck CRD 7616 ↗ Canaccord Genuity LLC BrokerCheck CRD 1020 ↗ H.C. Wainwright & Co., LLC BrokerCheck CRD 375 ↗ |
| EDGAR ↗ | Jun 16, 2023 D File 021-484484 | $0 | $0 | $79,748 | None listed on this filing |
| EDGAR ↗ | Apr 7, 2023 D File 021-478285 | $0 | $0 | $0 (est.) The Company intends to use the net proceeds to complete its ongoing clinical studies, working capital and other general corporate purposes. | None listed on this filing |
| EDGAR ↗ | Jul 7, 2020 D File 021-370375 | $350,000 | $0 | $0 | H.C. Wainwright & Co., LLC BrokerCheck CRD 375 ↗ |
| EDGAR ↗ | Jun 12, 2020 D File 021-368874 | $350,000 | $0 | $0 | H.C. Wainwright & Co., LLC BrokerCheck CRD 375 ↗ |
| EDGAR ↗ | Jan 31, 2020 D File 021-359530 | $1,391,400 | $0 | $0 | SVB Leerink LLC BrokerCheck CRD 39011 ↗ |
| EDGAR ↗ | Nov 26, 2018 D File 021-326493 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Oct 10, 2018 D File 021-323159 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Mar 2, 2018 D/A File 021-287819 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Jun 6, 2017 D File 021-288173 | $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 ↗ | Harpoon Therapeutics, Inc. | Director | Oct 31, 2023 | D | $100,162,467 similar: $2,000,000–$19,999,994 | $100,162,467 | 18 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | Avenzoar Pharmaceuticals, Inc. | Director | Jun 16, 2023 | D | $2,970,000 similar: $2,000,000–$19,999,994 | $899,748 | 2 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | Harpoon Therapeutics, Inc. | Director | Apr 7, 2023 | D | $25,000,000 similar: $2,000,000–$19,999,994 | $25,000,000 | 6 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | Iterum Therapeutics plc group: Iterum Therapeutics | Director | Jul 7, 2020 | D | $2,832,102 similar: $1,694,259–$16,000,000 | $2,832,102 | 8 similar: 1–13 | No minimum reported similar: $10,000–$55,000 |
| EDGAR ↗ | Iterum Therapeutics plc group: Iterum Therapeutics | Director | Jun 12, 2020 | D | $2,844,627 similar: $1,694,259–$16,000,000 | $2,844,627 | 8 similar: 1–13 | No minimum reported similar: $10,000–$55,000 |
| EDGAR ↗ | Iterum Therapeutics Bermuda Ltd group: Iterum Therapeutics | Director | Jan 31, 2020 | D | $51,588,000 similar: $1,694,259–$16,000,000 | $51,588,000 | 31 similar: 1–13 | No minimum reported similar: $10,000–$55,000 |
| EDGAR ↗ | Harpoon Therapeutics, Inc. | Director | Nov 26, 2018 | D | $69,999,993 similar: $2,000,000–$19,999,994 | $69,999,993 | 17 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | VelosBio Inc. | Director | Oct 10, 2018 | D | $58,055,204 similar: $2,000,000–$19,999,994 | $35,301,245 | 20 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | Iterum Therapeutics plc group: Iterum Therapeutics | Director | Mar 2, 2018 | D/A | $78,097,985 similar: $2,000,000–$19,999,994 | $78,097,985 | 17 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | Harpoon Therapeutics, Inc. | Director | Jun 6, 2017 | D | $45,185,208 similar: $2,000,000–$19,999,994 | $25,185,208 | 7 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | Iterum Therapeutics plc group: Iterum Therapeutics | Director | Jun 1, 2017 | D | $65,524,992 similar: $2,000,000–$19,999,994 | $45,867,493 | 17 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: Biotechnology / 506(b) (3,253 filings); Pharmaceuticals / 506(b) (800 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.
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 Mark Chin. 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.
Export this report as PDF (members · included free during the launch period)
No corrections have been requested for this page.
Free. Logged with status: received → under review → fixed / confirmed with source.
If this is you or your firm, add a sourced explanation next to any fact. Reviewed before publishing.
Members get an email when Mark Chin appears on a new Form D, or when a court case or SEC action is matched to them. See plans →