Data / Form D filings / SightStream Biotherapeutics, Inc.
SightStream Biotherapeutics, Inc.: Form D filings
SightStream Biotherapeutics, Inc., a biotechnology company in Walpole, MA, filed 6 Form D notices with the SEC between 2022 and 2025. The latest, on October 16, 2025, reports $1.8 million sold of a $1.8 million offering to 9 investors.
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Company details from the filing
- Address
- 55 WEST STREET, SUITE 201, Walpole, MA, 02081
- Phone
- (617) 388-2635
- Industry
- Biotechnology
- Entity type
- Corporation
- Incorporated in
- Delaware
- Revenue range
- Decline to Disclose
- Exemptions claimed
- Rule 506(b)
- SEC identifier (CIK)
- 1932386
Form D filings
| Filed | Type | Offering | Sold | Remaining | Investors | First sale | Filing |
|---|---|---|---|---|---|---|---|
| Oct 16, 2025 | New notice | $1,791,165 | $1,791,165 | 9 | Oct 2, 2025 | sec.gov | |
| Aug 25, 2023 | New notice | $1,250,000 | $250,000 | $1,000,000 | 2 | Aug 11, 2023 | sec.gov |
| Jun 12, 2023 | Amendment | $3,500,000 | $3,065,000 | $435,000 | 21 | May 25, 2022 | sec.gov |
| Mar 1, 2023 | Amendment | $3,500,000 | $2,915,000 | $585,000 | 19 | May 25, 2022 | sec.gov |
| Jun 3, 2022 | New notice | $1,900,000 | $1,900,000 | 13 | May 25, 2022 | sec.gov | |
| Jun 3, 2022 | New notice | Indefinite | $0 | 18 | May 25, 2022 | sec.gov |
Executive officers and directors named in the filing
| Name | Role | Note in the filing |
|---|---|---|
| Samuel Wu | Director | |
| Wenkai Xiang | Director | |
| David Neafus | Executive Officer | |
| Reza Dana | Director | |
| Jason Werner | Executive Officer, Director |
Other biotechnology companies in Massachusetts that filed recently
- Tru Singular Health, Inc. $1 million · Oct 30, 2026
- 511 Therapeutics, Inc. $500,000 · Oct 30, 2026
- Elucid Bioimaging Inc. $56.2 million · Oct 27, 2026
- OrthoIQ, Inc. $1.1 million · Oct 23, 2026
- LeanBio Therapeutics, Inc. offering · Oct 22, 2026
- Quiver Holdings Inc. $3 million · Oct 21, 2026
Every Form D from the week of Oct 13, 2025 · All recent filings in Massachusetts · All recent Biotechnology filings
Read from SEC EDGAR. Amount sold is what SightStream Biotherapeutics, Inc. reported on the day it filed; on an offering that is still open, a later amendment can raise it. Free to reuse with credit to SpecStream under CC BY 4.0.