Form D · Biotechnology
Gossamer Bio, Inc.
San Diego, CA · CIK 0001728117
Offering snapshot reported Sep 4, 2026 · SEC filing
- Reported sold
- $25M Offering amount: $150M
- Investors reported
- 38 Form D · investor count
- Minimum accepted
- $0 Reported outside-investor minimum
- First sale
- Aug 20, 2026 As reported in this filing
What changed?
Latest filing versus its linked predecessor, where available.
No comparable changes in the displayed metrics.
Filing history
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| Filed | Filing type | Reported sold | Change vs linked filing | Investors | Source |
|---|---|---|---|---|---|
| Sep 4, 2026 | Initial | $25,000,000 | No comparison | 38 | SEC filing |
| Aug 7, 2023 | Initial | $212,102,057 | No comparison | 70 | SEC filing |
| Jul 18, 2022 | Initial | $120,041,922 | No comparison | 23 | SEC filing |
| Aug 1, 2018 | Initial | $230,015,000 | No comparison | 67 | SEC filing |
| Jan 19, 2018 | Initial | $70,468,084 | No comparison | 3 | SEC filing |
| Jan 19, 2018 | Initial | $70,468,084 | No comparison | 3 | SEC filing |
Offering details
- Securities
- Option to acquire, Security to be acquired
- Exemptions
- 06b
- Duration over one year
- No
- Business combination
- No
- Sales commissions
- $1.38M (estimated)
- Finders' fees
- $0
- Form D file number
- 021-596541
Sales compensation recipients
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| Recipient | CRD | Associated broker-dealer |
|---|---|---|
| Leerink Partners LLC | 39011 | |
| Cantor Fitzgerald & Co. | 134 |
Source: Form D, filed Sep 4, 2026. Minimum accepted may differ from a standard advertised minimum.
Fund connections
No matching detailed fund disclosure was found in the latest imported ADV filings. This does not establish that the issuer has no adviser.
People & organizations
Current and past Form D appearances. These existing records do not establish a person's current role or uniquely identify them across issuers.
| Name | Reported role |
|---|---|
| Richard Aranda, M.D. | Executive |
| Joshua Bilenker, M.D. | Director |
| Kristina Burow | Director |
| Laura Carter, Ph.D. | Executive |
| Russell Cox | Director |
| Thomas Daniel | Director |
| Thomas Daniel, M.D. | Director |
| Skye J. Drynan | Director |
| Renee Gala | Director |
| Bryan Giraudo | Executive |
| Sheila Gujrathi, M.D. | Director, Executive |
| Faheem Hasnain | Director, Executive |
| Jill Howe | Executive |
| Richard Lim | Director |
| Sandra Milligan | Director |
| Sandra Milligan, M.D., J.D. | Director |
| Steven D. Nathan | Director |
| Robert Nelsen | Director |
| Caryn Peterson | Executive |
| John Quisel | Director |
| Robert Smith | Executive |
| Otello Stampacchia, Ph.D. | Director |
| Christian Waage | Executive |
| Michael Yi | Director |
Issuer details
Industry: Biotechnology (See others in industry)
Address:
3115 Merryfield Row, Suite 120
San Diego, CA, 92121
Phone: (858) 684-1300
San Diego, CA, 92121
Phone: (858) 684-1300