Latest Period
Q4 2025
Security Snapshot
IO Biotech, Inc. - Common Stock, par value $0.001 per share (IOBTQ) Institutional Ownership
CUSIP: 449778109
13F Institutional Holders and Ownership History from Q4 2021 to Q1 2026
Institutions Reporting
22
Shares (Excl. Options)
7,848,183
Price
$0.61
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- Type / Class
- Equity / Common Stock, par value $0.001 per share
- Symbol
- IOBTQ on OTC
- Shares outstanding
- 73,755,848
- Price per share
- $0.01
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 7,848,183
- Total reported value
- $4,778,900
- % of total 13F portfolios
- 0%
- Share change
- -2,047,692
- Value change
- -$1,143,305
- Number of holders
- 22
- Price from insider filings
- $0.01
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- IOBTQ - IO Biotech, Inc. - Common Stock, par value $0.001 per share is tracked under CUSIP 449778109.
- 22 institutions reported positions in Q4 2025.
- 5 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 22 to 2 between Q4 2025 and Q1 2026.
- Reported value moved from $4,778,900 to $21,828.
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.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 22 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 449778109?
CUSIP 449778109 identifies IOBTQ - IO Biotech, Inc. - 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.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 449778109:
Significant Owners of IO Biotech, Inc. - Common Stock, par value $0.001 per share (IOBTQ) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Chernett Jorey | 6.3% | +20% | $2,317,201 | +$543,849 | 4,543,532 | +31% | Chernett Jorey | 31 Dec 2025 |
| Point72 Asset Management, L.P. | 5.6% | $2,452,108 | 4,027,112 | Point72 Asset Management, L.P. | 05 Feb 2026 | |||
| Samsara BioCapital, L.P. | 3.8% | $2,578,946 | 2,631,578 | Samsara BioCapital, L.P. | 31 Dec 2024 | |||
| Novo Holdings A/S | 3.3% | -57% | $1,827,160 | -$1,859,215 | 2,469,135 | -50% | Novo Holdings A/S | 21 Jan 2026 |
| HBM Healthcare Investments (Cayman) Ltd. | 3.3% | -61% | $535,467 | -$679,689 | 2,433,943 | -56% | HBM Healthcare Investments (Cayman) Ltd. | 02 Apr 2026 |
As of 31 Dec 2025, 22 institutional investors reported holding 7,848,183 shares of IO Biotech, Inc. - Common Stock, par value $0.001 per share (IOBTQ). This represents 11% of the company’s total 73,755,848 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of IO Biotech, Inc. - Common Stock, par value $0.001 per share (IOBTQ) together control 11% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| NOVO HOLDINGS A/S | 3.4% | 2,512,453 | 0% | 0.12% | $1,529,833 |
| Ikarian Capital, LLC | 1.9% | 1,386,565 | -9.1% | 0.11% | $844,279 |
| BANK OF AMERICA CORP /DE/ | 1.1% | 799,953 | 0% | 0% | $486,371 |
| MORGAN STANLEY | 0.73% | 539,182 | -19% | 0% | $328,308 |
| Beacon Pointe Advisors, LLC | 0.69% | 506,000 | 0% | $308,104 | |
| BOOTHBAY FUND MANAGEMENT, LLC | 0.61% | 451,852 | -24% | 0.01% | $275,133 |
| Dauntless Investment Group, LLC | 0.61% | 451,641 | 1.1% | $275,004 | |
| MARSHALL WACE, LLP | 0.58% | 429,338 | -59% | 0% | $261,897 |
| RENAISSANCE TECHNOLOGIES LLC | 0.28% | 207,601 | -62% | 0% | $126,408 |
| MILLENNIUM MANAGEMENT LLC | 0.19% | 138,716 | -90% | 0% | $84,464 |
| CITIGROUP INC | 0.15% | 111,447 | +8526% | 0% | $67,860 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 0.1% | 75,000 | 0% | 0% | $45,668 |
| TWO SIGMA SECURITIES, LLC | 0.06% | 44,757 | 0% | $27,253 | |
| UBS Group AG | 0.06% | 43,578 | +521% | 0% | $26,539 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.05% | 33,307 | 0% | 0% | $20,280 |
| Hilton Capital Management, LLC | 0.03% | 25,510 | 0% | 0% | $15,533 |
| ADAR1 Capital Management, LLC | 0.03% | 24,964 | 0% | $15,201 | |
| PKS Advisory Services, LLC | 0.03% | 20,000 | +2.6% | 0% | $12,178 |
| Virtu Financial LLC | 0.03% | 19,078 | -51% | 0% | $12,000 |
| XTX Topco Ltd | 0.02% | 15,864 | -91% | 0% | $9,660 |
| Scientech Research LLC | 0.02% | 11,255 | 0% | $6,853 | |
| SBI Securities Co., Ltd. | 0% | 122 | 0% | 0% | $74 |
| GOLDMAN SACHS GROUP INC | 0% | 0 | -100% | $0 | |
| Quadrature Capital Ltd | 0% | 0 | -100% | $0 | |
| Point72 Asset Management, L.P. | 0% | 0 | -100% | $0 |
Institutional Holders of IO Biotech, Inc. - Common Stock, par value $0.001 per share (IOBTQ) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 379,329 | $21,828 | +$19,182 | $0.06 | 2 |
| 2025 Q4 | 7,848,183 | $4,778,900 | -$1,143,305 | $0.61 | 22 |
| 2025 Q3 | 9,895,875 | $3,589,663 | -$13,417,589 | $0.36 | 21 |
| 2025 Q2 | 18,182,707 | $25,273,480 | -$1,285,024 | $1.39 | 26 |
| 2025 Q1 | 19,066,617 | $20,781,978 | -$660,538 | $1.09 | 21 |
| 2024 Q4 | 19,692,862 | $18,114,763 | -$4,833,042 | $0.92 | 26 |
| 2024 Q3 | 23,591,882 | $24,769,965 | -$2,959,503 | $1.05 | 19 |
| 2024 Q2 | 26,183,049 | $30,634,167 | -$1,443,320 | $1.17 | 19 |
| 2024 Q1 | 27,341,910 | $47,354,293 | -$3,558,302 | $1.73 | 17 |
| 2023 Q4 | 29,400,721 | $55,273,224 | +$999,356 | $1.88 | 18 |
| 2023 Q3 | 29,668,665 | $41,702,613 | +$24,426,263 | $1.41 | 19 |
| 2023 Q2 | 12,246,779 | $23,953,554 | -$3,111,706 | $1.96 | 15 |
| 2023 Q1 | 13,917,553 | $26,081,803 | -$1,175,062 | $1.88 | 17 |
| 2022 Q4 | 14,281,285 | $32,846,954 | -$2,578,155 | $2.30 | 17 |
| 2022 Q3 | 15,335,530 | $41,559,000 | -$326,875 | $2.71 | 20 |
| 2022 Q2 | 15,453,557 | $72,167,000 | +$2,681,635 | $4.67 | 18 |
| 2022 Q1 | 14,858,852 | $76,863,500 | -$1,060,884 | $5.30 | 19 |
| 2021 Q4 | 12,982,583 | $82,349,000 | +$82,349,000 | $6.40 | 19 |