Latest Period
Q4 2025
Security Snapshot
Turnstone Biologics Corp. - Common Stock, par value $0.001 per share (TSBX) Institutional Ownership
CUSIP: 90042W100
13F Institutional Holders and Ownership History from Q3 2023 to Q4 2025
Institutions Reporting
0
Shares (Excl. Options)
0
Price
$0.36
- Type / Class
- Equity / Common Stock, par value $0.001 per share
- Symbol
- TSBX
- Shares outstanding
- 23,142,592
- Price per share
- $0.36
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 0
- Total reported value
- $0
- Share change
- -110,044
- Value change
- -$61,306
- Number of holders
- 0
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- TSBX - Turnstone Biologics Corp. - Common Stock, par value $0.001 per share is tracked under CUSIP 90042W100.
- 0 institutions reported positions in Q4 2025.
- 1 significant owner is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 0 to 0 between Q3 2025 and Q4 2025.
- Reported value moved from $0 to $0.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Official SEC Source
Backed by Form 13F
Ownership context comes from SEC Form 13F and, when available, Schedule 13D/13G filings.
See Original FilingInvestment Quick Answers
What is CUSIP 90042W100?
CUSIP 90042W100 identifies TSBX - Turnstone Biologics Corp. - Common Stock, par value $0.001 per share in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Continue Investment Research
- Latest 13F filings for new institutional portfolio disclosures.
- Latest Schedule 13D/13G reports for activist and beneficial ownership updates.
- Latest 10-Q/10-K reports to cross-check issuer fundamentals.
- Recent insider transactions for management buying/selling context.
- SEC investors directory and top value investors for manager-level discovery.
- All institutional ownership pages to compare adjacent CUSIP pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 90042W100:
Significant Owners of Turnstone Biologics Corp. - Common Stock, par value $0.001 per share (TSBX) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| FMR LLC | 4.9% | $396,895 | 1,133,987 | FMR LLC | 31 Mar 2025 |
Institutional Holders of Turnstone Biologics Corp. - Common Stock, par value $0.001 per share (TSBX) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 0 | $0 | -$61,306 | $0.36 | 0 |
| 2025 Q3 | 0 | $0 | -$3,026,055 | $0.36 | 0 |
| 2025 Q2 | 8,434,667 | $3,026,098 | -$754,416 | $0.36 | 23 |
| 2025 Q1 | 10,393,095 | $4,258,915 | -$422,976 | $0.41 | 23 |
| 2024 Q4 | 11,096,493 | $5,509,548 | -$208,809 | $0.50 | 28 |
| 2024 Q3 | 11,443,046 | $6,373,139 | -$2,924,475 | $0.56 | 24 |
| 2024 Q2 | 12,701,832 | $33,279,598 | -$1,718,315 | $2.62 | 45 |
| 2024 Q1 | 13,349,611 | $34,977,287 | +$862,899 | $2.62 | 40 |
| 2023 Q4 | 13,020,403 | $33,107,631 | -$291,399 | $2.54 | 36 |
| 2023 Q3 | 12,204,272 | $48,040,873 | +$48,040,873 | $3.94 | 35 |