Fund family · SEC Form D record
Bio funds
Bio has 5 vehicles on the SEC Form D record, in 5 numbered generations, filed from 2020 to 2026. The newest is 76Bio, Inc., first filed Feb 13, 2023.
- Vehicles
- 5
- Numbered generations
- 5
- First filing
- 2020
- Latest filing
- Oct 29, 2026
Names, dates and status as filed on SEC EDGAR. A Form D is a notice of an exempt offering; the SEC does not review or approve it. Grouped by name; see the last question below.
Fund 76
1 vehicle · first filed · latest filing
| Vehicle | Sleeve | First filed | Latest filing | Filing record | SEC |
|---|---|---|---|---|---|
| 76Bio, Inc.CIK 1903465 | Sold the stated amount | EDGAR |
Sold to date and investors
Unlock in the terminal (Investor)Fund 65
1 vehicle · first filed
| Vehicle | Sleeve | First filed | Latest filing | Filing record | SEC |
|---|---|---|---|---|---|
| 65Bio Inc.CIK 1821284 | No amendment after 13 months | EDGAR |
Sold to date and investors
Unlock in the terminal (Investor)Fund 54
1 vehicle · first filed
| Vehicle | Sleeve | First filed | Latest filing | Filing record | SEC |
|---|---|---|---|---|---|
| Bio 54, LLCCIK 1890190 | No amendment after 13 months | EDGAR |
Sold to date and investors
Unlock in the terminal (Investor)Fund XXVIII
1 vehicle · first filed · latest filing
| Vehicle | Sleeve | First filed | Latest filing | Filing record | SEC |
|---|---|---|---|---|---|
| 28bio, Inc.CIK 1769360 | Sold the stated amount | EDGAR |
Sold to date and investors
Unlock in the terminal (Investor)Fund XX
1 vehicle · first filed
| Vehicle | Sleeve | First filed | Latest filing | Filing record | SEC |
|---|---|---|---|---|---|
| 20 Bio, Inc.CIK 2111394 | Filed within 13 months | EDGAR |
Sold to date and investors
Unlock in the terminal (Investor)Questions about the Bio funds
- How many Bio funds are there?
- The SEC Form D record shows 5 vehicles in 5 numbered generations, the earliest filed Aug 17, 2020 and the latest filing on Oct 29, 2026. By generation: Fund 76 (76Bio, Inc., first filed Feb 13, 2023); Fund 65 (65Bio Inc., first filed Aug 17, 2020); Fund 54 (Bio 54, LLC, first filed Oct 25, 2021); Fund XXVIII (28bio, Inc., first filed Jun 24, 2025); Fund XX (20 Bio, Inc., first filed Feb 13, 2026).
- What is the latest Bio fund?
- 76Bio, Inc., which first filed a Form D on Feb 13, 2023 and last amended it on Feb 14, 2023. Its own page carries the filed terms, the people named on the form and every filing on EDGAR.
- Who is the adviser to the Bio funds?
- AltStreet has not joined a Form ADV adviser to this family's Form D filings. The adviser, if any, appears in each fund's offering documents, which a Form D does not include.
- How much have the Bio funds raised?
- Each vehicle reports an amount sold and an investor count on its latest Form D or amendment, and those figures are on each vehicle's entity page. The totals by generation are in the AltStreet Terminal (Investor), where master and parallel sleeves that report one family-wide figure are counted once.
- How does AltStreet group these funds into a family?
- By name: the base name minus the fund number, sleeve letters, jurisdiction and legal form, read from each issuer's Form D (lib/edgar/fundFamilies.ts). 'Fund IV' is generation 4; a vehicle whose name carries no number is listed as unnumbered. It is a name-based grouping, not a statement of common control; the filings on each entity page show the related persons as filed.