Sponsor Check › Person
Related person on Form D filings · address state as listed: MA · listed Feb 18, 2009 → Apr 20, 2026
Data last updated: Oct 23, 2026, 5:45 PM ET · Courts (RECAP) last checked: Oct 23, 2026, 11:56 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.
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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, 11:56 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.
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No SEC search has run yet for this person.
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, 11:56 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.
0 of 33 offerings report sales commissions; 2 report finder's fees totalling $328,000; 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 ↗ | Apr 20, 2026 D/A File 021-100507 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Apr 20, 2026 D/A File 021-74043 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Mar 19, 2026 D File 021-577032 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Sep 10, 2025 D File 021-557195 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Jul 22, 2025 D/A File 021-492107 | $0 | $164,000 | $0 (est.) An affiliate of the General Partner will receive a management fee payable quarterly in advance as specified in the Issuer's confidential offering materials. | Old City Securities LLC BrokerCheck CRD 171910 ↗ |
| EDGAR ↗ | Jul 22, 2025 D/A File 021-492108 | $0 | $164,000 | $0 (est.) An affiliate of the General Partner will receive a management fee payable quarterly in advance as specified in the Issuer's confidential offering materials. | Old City Securities LLC BrokerCheck CRD 171910 ↗ |
| EDGAR ↗ | Apr 23, 2025 D File 021-544318 | $0 | $0 | $0 (est.) An affiliate of the General Partner will receive a management fee payable quarterly in advance as specified in the Issuer's confidential offering materials. | None listed on this filing |
| EDGAR ↗ | Apr 23, 2025 D File 021-544319 | $0 | $0 | $0 (est.) An affiliate of the General Partner will receive a management fee payable quarterly in advance as specified in the Issuer's confidential offering materials. | None listed on this filing |
| EDGAR ↗ | Feb 26, 2025 D File 021-539282 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Oct 6, 2021 D File 021-415889 | $0 | $0 | $0 (est.) An affiliate of the General Partner will receive a management fee payable quarterly in advance as specified in the Issuer's confidential offering materials. | None listed on this filing |
| EDGAR ↗ | Oct 6, 2021 D File 021-415892 | $0 | $0 | $0 (est.) An affiliate of the General Partner will receive a management fee payable quarterly in advance as specified in the Issuer's confidential offering materials. | None listed on this filing |
| EDGAR ↗ | May 14, 2021 D File 021-399415 | $0 | $0 | $0 (est.) | None listed on this filing |
| EDGAR ↗ | Sep 29, 2020 D File 021-376580 | $0 | $0 | $0 (est.) An affiliate of the General Partner will receive a management fee payable quarterly in advance as specified in the Issuer's confidential offering materials. | None listed on this filing |
| EDGAR ↗ | Sep 29, 2020 D File 021-376586 | $0 | $0 | $0 (est.) An affiliate of the General Partner will receive a management fee payable quarterly in advance as specified in the Issuer's confidential offering materials. | None listed on this filing |
| EDGAR ↗ | Oct 31, 2019 D File 021-352259 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Jul 12, 2019 D File 021-344153 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Jul 12, 2019 D File 021-344154 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Mar 18, 2019 D/A File 021-309480 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Nov 13, 2018 D File 021-325591 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Dec 21, 2017 D/A File 021-292462 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Sep 22, 2017 D File 021-295257 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Aug 28, 2017 D File 021-293589 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | May 18, 2017 D/A File 021-263309 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Nov 22, 2016 D File 021-274998 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Oct 21, 2016 D/A File 021-266529 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Mar 10, 2016 D File 021-259004 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Oct 5, 2015 D File 021-248768 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Jul 2, 2015 D File 021-243014 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | May 28, 2015 D File 021-240650 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Aug 15, 2013 D File 021-201363 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | May 8, 2013 D/A File 021-183885 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Mar 5, 2012 D File 021-174309 | $0 | $0 | $0 | None listed on this filing |
| EDGAR ↗ | Feb 18, 2009 D/A File 021-101432 | $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 ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer, Promoter Dr. Kolchinsky is a Manager of the General Partner of the Issuer. | Apr 20, 2026 | D/A | Indefinite similar: $155,000–$5,250,000 | $4,170,818,373 | 947 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Promoter Dr. Kolchinsky is a Managing Partner of the Investment Manager's General Partner. | Apr 20, 2026 | D/A | Indefinite similar: $155,000–$5,250,000 | $2,386,455,599 | 351 similar: 4–27 | $100,000 similar: $1,000–$100,000 |
| EDGAR ↗ | Terrestrial Bio, Inc. | Director | Mar 19, 2026 | D | $83,538,199 similar: $2,000,000–$19,999,994 | $57,301,758 | 16 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | Terrestrial Bio, Inc. | Director | Sep 10, 2025 | D | $10,000,000 similar: $2,000,000–$19,999,994 | $7,903,411 | 4 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | RA Capital Planetary Health International Fund, L.P. group: Ra Capital Nexus | Executive Officer | Jul 22, 2025 | D/A | Indefinite similar: $155,000–$5,250,000 | $30,252,500 | 8 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Planetary Health Fund, L.P. group: Ra Capital Nexus | Executive Officer | Jul 22, 2025 | D/A | Indefinite similar: $155,000–$5,250,000 | $122,202,500 | 25 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Nexus International Fund IV, L.P. group: Ra Capital Nexus | Executive Officer | Apr 23, 2025 | D | Indefinite similar: $155,000–$5,250,000 | $0 | 0 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Nexus Fund IV, L.P. group: Ra Capital Nexus | Executive Officer | Apr 23, 2025 | D | Indefinite similar: $155,000–$5,250,000 | $0 | 0 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer, Promoter Dr. Kolchinsky is a Manager of the General Partner of the Issuer. | Apr 18, 2025 | D/A | Indefinite similar: $155,000–$5,250,000 | $4,020,194,043 | 920 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Promoter Dr. Kolchinsky is a Managing Partner of the Investment Manager's General Partner. | Apr 18, 2025 | D/A | Indefinite similar: $155,000–$5,250,000 | $2,361,120,599 | 349 similar: 4–27 | $100,000 similar: $1,000–$100,000 |
| EDGAR ↗ | Terrestrial Bio, Inc. | Director | Feb 26, 2025 | D | $10,000,000 similar: $2,000,000–$19,999,994 | $8,400,000 | 3 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | RA Capital Planetary Health International Fund, L.P. group: Ra Capital Nexus | Executive Officer | Feb 6, 2025 | D/A | Indefinite similar: $155,000–$5,250,000 | $26,812,500 | 6 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Planetary Health Fund, L.P. group: Ra Capital Nexus | Executive Officer | Feb 6, 2025 | D/A | Indefinite similar: $155,000–$5,250,000 | $116,562,500 | 23 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Promoter Dr. Kolchinsky is a Managing Partner of the Investment Manager's General Partner. | Apr 18, 2024 | D/A | Indefinite similar: $155,000–$5,250,000 | $2,334,560,599 | 342 similar: 4–27 | $100,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer, Promoter Dr. Kolchinsky is a Manager of the General Partner of the Issuer. | Apr 18, 2024 | D/A | Indefinite similar: $155,000–$5,250,000 | $3,851,543,208 | 903 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Planetary Health Fund, L.P. group: Ra Capital Nexus | Executive Officer | Feb 9, 2024 | D/A | Indefinite similar: $155,000–$5,250,000 | $52,800,000 | 18 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Planetary Health International Fund, L.P. group: Ra Capital Nexus | Executive Officer | Feb 9, 2024 | D/A | Indefinite similar: $155,000–$5,250,000 | $500,000 | 1 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Planetary Health Fund, L.P. group: Ra Capital Nexus | Executive Officer | Sep 14, 2023 | D | Indefinite similar: $155,000–$5,250,000 | $0 | 0 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Planetary Health International Fund, L.P. group: Ra Capital Nexus | Executive Officer | Sep 14, 2023 | D | Indefinite similar: $155,000–$5,250,000 | $0 | 0 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Promoter Dr. Kolchinsky is a Managing Partner of the Investment Manager's General Partner. | Apr 18, 2023 | D/A | Indefinite similar: $155,000–$5,250,000 | $2,299,760,599 | 338 similar: 4–27 | $100,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer, Promoter Dr. Kolchinsky is a Manager of the General Partner of the Issuer. | Apr 18, 2023 | D/A | Indefinite similar: $155,000–$5,250,000 | $3,608,326,437 | 868 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Promoter Dr. Kolchinsky is a Managing Partner of the Investment Manager's General Partner. | Apr 18, 2022 | D/A | Indefinite similar: $155,000–$5,250,000 | $2,010,447,338 | 321 similar: 4–27 | $100,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer, Promoter Dr. Kolchinsky is a Manager of the General Partner of the Issuer. | Apr 18, 2022 | D/A | Indefinite similar: $155,000–$5,250,000 | $3,333,216,055 | 811 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Nexus International Fund III, L.P. group: Ra Capital Nexus | Director, Promoter Dr. Kolchinsky is a Manager of the General Partner of the Issuer | Oct 6, 2021 | D | Indefinite similar: $155,000–$5,250,000 | $880,993,000 | 74 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Nexus Fund III, L.P. group: Ra Capital Nexus | Director, Promoter Dr. Kolchinsky is a Manager of the General Partner of the Issuer | Oct 6, 2021 | D | Indefinite similar: $155,000–$5,250,000 | $880,993,000 | 160 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | Terrestrial Bio, Inc. | Director | May 14, 2021 | D | $35,012,500 similar: $2,000,000–$19,999,994 | $25,300,000 | 7 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Promoter Dr. Kolchinsky is a Managing Partner of the Investment Manager's General Partner. | Apr 16, 2021 | D/A | Indefinite similar: $155,000–$5,250,000 | $1,486,357,990 | 289 similar: 4–27 | $100,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer Dr. Kolchinsky is a Manager of the General Partner of the Issuer. | Apr 16, 2021 | D/A | Indefinite similar: $155,000–$5,250,000 | $2,600,678,851 | 682 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Nexus Fund II, L.P. group: Ra Capital Nexus | Promoter | Sep 29, 2020 | D | Indefinite similar: $155,000–$5,250,000 | $0 | 0 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Nexus International Fund II, L.P. group: Ra Capital Nexus | Promoter | Sep 29, 2020 | D | Indefinite similar: $155,000–$5,250,000 | $0 | 0 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director, Promoter Dr. Kolchinsky is also a Managing Partner of the Investment Manager's General Partner | Apr 16, 2020 | D/A | Indefinite similar: $155,000–$5,250,000 | $1,065,477,990 | 209 similar: 4–27 | $100,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Director, Promoter Dr. Kolchinsky is a Managing Partner of the General Partner of the Issuer. | Apr 16, 2020 | D/A | Indefinite similar: $155,000–$5,250,000 | $1,788,568,516 | 428 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | Lantos Technologies, Inc. group: Catalyst Health | Director | Oct 31, 2019 | D | $10,000,000 similar: $1,100,015–$10,001,163 | $5,204,467 | 2 similar: 2–14 | No minimum reported similar: $5,000–$50,000 |
| EDGAR ↗ | RA Capital Nexus Fund, L.P. group: Ra Capital Nexus | Director, Promoter Dr. Kolchinsky is a Managing Partner of the General Partner of the Issuer. | Jul 12, 2019 | D | Indefinite similar: $155,000–$5,250,000 | $308,150,000 | 69 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Nexus International Fund, L.P. group: Ra Capital Nexus | Director, Promoter Dr. Kolchinsky is a Managing Partner of the General Partner of the Issuer. | Jul 12, 2019 | D | Indefinite similar: $155,000–$5,250,000 | $128,950,000 | 25 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director, Promoter Dr. Kolchinsky is also a Managing Director of the Investment Manager of the Issuer. | Apr 16, 2019 | D/A | Indefinite similar: $155,000–$5,250,000 | $488,243,239 | 103 similar: 4–27 | $100,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Director, Promoter Dr. Kolchinsky is a Managing Partner of the General Partner of the Issuer. | Apr 16, 2019 | D/A | Indefinite similar: $155,000–$5,250,000 | $827,843,737 | 299 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | Lantos Technologies, Inc. group: Catalyst Health | Director | Mar 18, 2019 | D/A | $15,000,000 similar: $1,100,015–$10,001,163 | $12,620,543 | 8 similar: 2–14 | No minimum reported similar: $5,000–$50,000 |
| EDGAR ↗ | Sojournix, Inc. | Director | Nov 13, 2018 | D | $43,999,992 similar: $1,694,259–$16,000,000 | $43,999,992 | 7 similar: 1–13 | No minimum reported similar: $10,000–$55,000 |
| EDGAR ↗ | Lantos Technologies, Inc. group: Catalyst Health | Director | Apr 5, 2018 | D | $10,000,000 similar: $1,100,015–$10,001,163 | $4,500,000 | 8 similar: 2–14 | No minimum reported similar: $5,000–$50,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director, Promoter Dr. Kolchinsky is also a Managing Director of the Investment Manager of the Issuer. | Mar 28, 2018 | D/A | Indefinite similar: $155,000–$5,250,000 | $345,193,239 | 73 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer Dr. Kolchinsky is a Managing Director of the General Partner of the Issuer. | Mar 28, 2018 | D/A | Indefinite similar: $155,000–$5,250,000 | $508,042,137 | 247 similar: 4–27 | No minimum reported similar: $1,000–$100,000 |
| EDGAR ↗ | Sojournix, Inc. | Director | Dec 21, 2017 | D/A | $19,441,330 similar: $1,694,259–$16,000,000 | $19,028,100 | 7 similar: 1–13 | No minimum reported similar: $10,000–$55,000 |
| EDGAR ↗ | Adeo Health Science, Inc. | Director | Sep 22, 2017 | D | $3,078,553 similar: $829,831–$9,999,998 | $3,078,553 | 21 similar: 2–15 | No minimum reported similar: $10,000–$54,310 |
| EDGAR ↗ | Lantos Technologies, Inc. group: Catalyst Health | Director | Aug 28, 2017 | D | $3,000,000 similar: $1,100,015–$10,001,163 | $2,005,000 | 9 similar: 2–14 | No minimum reported similar: $5,000–$50,000 |
| EDGAR ↗ | Sojournix, Inc. | Director | Aug 9, 2017 | D | $6,000,000 similar: $2,000,000–$19,999,994 | $6,000,000 | 2 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | Sojournix, Inc. | Director | May 18, 2017 | D/A | $8,363,640 similar: $2,000,000–$19,999,994 | $8,363,640 | 3 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director, Promoter Dr. Kolchinsky is also a Managing Director of the Investment Manager of the Issuer. | Mar 28, 2017 | D/A | Indefinite similar: $155,000–$5,250,000 | $314,794,788 | 67 similar: 4–27 | $2,000,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer Dr. Kolchinsky is a Managing Director of the General Partner of the Issuer. | Mar 28, 2017 | D/A | Indefinite similar: $155,000–$5,250,000 | $471,769,834 | 233 similar: 4–27 | $2,000,000 similar: $1,000–$100,000 |
| EDGAR ↗ | Lantos Technologies, Inc. group: Catalyst Health | Director | Nov 22, 2016 | D | $500,000 similar: $1,100,015–$10,001,163 | $500,000 | 2 similar: 2–14 | No minimum reported similar: $5,000–$50,000 |
| EDGAR ↗ | Lantos Technologies, Inc. group: Catalyst Health | Director | Oct 21, 2016 | D/A | $3,500,000 similar: $1,100,015–$10,001,163 | $3,500,000 | 5 similar: 2–14 | No minimum reported similar: $5,000–$50,000 |
| EDGAR ↗ | Lantos Technologies, Inc. group: Catalyst Health | Director | Jul 7, 2016 | D | $3,000,000 similar: $1,100,015–$10,001,163 | $3,000,000 | 4 similar: 2–14 | No minimum reported similar: $5,000–$50,000 |
| EDGAR ↗ | Sojournix, Inc. | Director | May 17, 2016 | D | $7,000,000 similar: $2,000,000–$19,999,994 | $2,000,000 | 2 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director Mr. Kolchinsky is also the Manager of the Investment Manager of the Issuer. | Mar 28, 2016 | D/A | Indefinite similar: $155,000–$5,250,000 | $281,767,271 | 58 similar: 4–27 | $2,000,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer Mr. Kolchinsky is the Manager of the General Partner of the Issuer. | Mar 28, 2016 | D/A | Indefinite similar: $155,000–$5,250,000 | $456,450,962 | 223 similar: 4–27 | $2,000,000 similar: $1,000–$100,000 |
| EDGAR ↗ | Lantos Technologies, Inc. group: Catalyst Health | Director | Mar 10, 2016 | D | $5,000,000 similar: $1,100,015–$10,001,163 | $1,500,000 | 6 similar: 2–14 | No minimum reported similar: $5,000–$50,000 |
| EDGAR ↗ | Lantos Technologies, Inc. group: Catalyst Health | Director | Oct 5, 2015 | D | $3,925,000 similar: $1,100,015–$10,001,163 | $3,922,126 | 9 similar: 2–14 | No minimum reported similar: $5,000–$50,000 |
| EDGAR ↗ | Lantos Technologies, Inc. group: Catalyst Health | Director | Jul 2, 2015 | D | $5,000,000 similar: $1,100,015–$10,001,163 | $1,468,840 | 9 similar: 2–14 | No minimum reported similar: $5,000–$50,000 |
| EDGAR ↗ | Calimmune, Inc. | Director | May 28, 2015 | D | $15,988,448 similar: $2,000,000–$19,999,994 | $15,851,969 | 51 similar: 2–16 | No minimum reported similar: $10,000–$50,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director | Apr 13, 2015 | D/A | Indefinite similar: $155,000–$5,250,000 | $224,241,246 | 50 similar: 4–27 | $100,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer | Feb 13, 2015 | D/A | Indefinite similar: $155,000–$5,250,000 | $423,923,143 | 204 similar: 4–27 | $50,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer | Jan 15, 2015 | D/A | Indefinite similar: $155,000–$5,250,000 | $415,671,149 | 199 similar: 4–27 | $50,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director | Sep 10, 2014 | D/A | Indefinite similar: $155,000–$5,250,000 | $135,491,246 | 44 similar: 4–27 | $100,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer | Feb 14, 2014 | D/A | Indefinite similar: $155,000–$5,250,000 | $388,569,067 | 181 similar: 4–27 | $50,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer | Nov 8, 2013 | D/A | Indefinite similar: $155,000–$5,250,000 | $372,159,387 | 170 similar: 4–27 | $50,000 similar: $1,000–$100,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director | Sep 12, 2013 | D/A | Indefinite | $112,807,246 | 36 | $100,000 |
| EDGAR ↗ | Dicerna Pharmaceuticals Inc group: Dicerna | Director | Aug 15, 2013 | D | $63,000,000 | $59,999,937 | 13 | No minimum reported |
| EDGAR ↗ | Cellscape Corp | Director | May 8, 2013 | D/A | $12,070,314 | $8,497,167 | 8 | $5 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director | Apr 11, 2013 | D/A | Indefinite | $98,982,246 | 31 | $100,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director | Feb 15, 2013 | D/A | Indefinite | $90,885,746 | 24 | $100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer | Nov 14, 2012 | D/A | Indefinite | $264,455,222 | 112 | $50,000 |
| EDGAR ↗ | Cellscape Corp | Director | Sep 13, 2012 | D/A | $4,999,999 | $1,099,999 | 1 | $5 |
| EDGAR ↗ | Cellscape Corp | Director | Sep 10, 2012 | D | $4,999,999 | $1,099,999 | 1 | $5 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer | Aug 14, 2012 | D/A | Indefinite | $244,985,918 | 101 | $50,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director | Aug 14, 2012 | D/A | Indefinite | $80,200,761 | 15 | $100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer | Jul 12, 2012 | D/A | Indefinite | $242,185,903 | 94 | $50,000 |
| EDGAR ↗ | Cellscape Corp | Director | Mar 5, 2012 | D | $9,345,014 | $9,345,014 | 11 | $1 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director | Nov 23, 2011 | D/A | Indefinite | $78,500,746 | 9 | $100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer | Jul 12, 2011 | D/A | Indefinite | $208,025,900 | 61 | $50,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer | Mar 4, 2011 | D/A | Indefinite | $203,525,900 | 54 | $50,000 |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director | May 28, 2010 | D/A | Indefinite | $76,850,746 | 7 | $100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer | Mar 26, 2010 | D/A | Indefinite | $172,607,555 | 48 | No minimum reported |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer | Oct 15, 2009 | D/A | Indefinite | $170,607,555 | 47 | No minimum reported |
| EDGAR ↗ | RA Capital Healthcare Fund LP group: Ra Capital Nexus | Executive Officer | Sep 17, 2009 | D/A | Indefinite | $167,046,833 | 44 | No minimum reported |
| EDGAR ↗ | RA CAPITAL HEALTHCARE INTERNATIONAL FUND LTD group: Ra Capital Nexus | Director | May 29, 2009 | D/A | Indefinite | $76,850,746 | 7 | $100,000 |
| EDGAR ↗ | RA Capital Healthcare Fund II, L.P. group: Ra Capital Nexus | Executive Officer Manager of General Partner of Issuer. | Feb 18, 2009 | D/A | Indefinite | $2,140,000 | 6 | $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.
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 Peter Kolchinsky. 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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