Latest Period
n/a
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
Shares (Excl. Options)
Price
$0.36
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- Security type / class
- Equity / Common Stock, par value $0.001 per share
- Symbol
- TSBX
- Shares outstanding
- 23,142,592
- SEC-reported price per share
- $0.36
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- TSBX - Turnstone Biologics Corp. - Common Stock, par value $0.001 per share is tracked under CUSIP 90042W100.
- Latest finished 13F holder period is not available.
- 1 significant owner is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 0 to 0 between Q3 2025 and Q4 2025.
- SEC-reported value moved from $0 to $0.
Research use
- 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.
Evidence
Source: SEC Schedule 13D/G
Open SEC evidence
Ownership context comes from Schedule 13D/G and available holder history for this CUSIP.
Security key
90042W100
Latest holder period
n/a
13F holders
13D/G owners
1
CIK / CUSIP context first
TSBX full holder history
Turnstone Biologics Corp. SEC filings
Turnstone Biologics Corp. company facts
Turnstone Biologics Corp. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 90042W100:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
1
Security
TSBX
| 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 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
10
Latest
n/a
Rows shown
1-10 of 10
| Period | 13F 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 |