Latest Period
Q4 2025
Security Snapshot
iBio, Inc. - Common Stock, par value $0.001 per share (IBIO) Institutional Ownership
CUSIP: 451033708
13F Institutional Holders and Ownership History from Q1 2023 to Q1 2026
Institutions Reporting
49
Shares (Excl. Options)
16,339,467
Price
$1.93
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- Type / Class
- Equity / Common Stock, par value $0.001 per share
- Symbol
- IBIO on Nasdaq
- Shares outstanding
- 30,719,795
- Price per share
- $2.20
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 16,339,467
- Total reported value
- $31,555,271
- % of total 13F portfolios
- 0%
- Share change
- +12,769,419
- Value change
- +$26,570,216
- Number of holders
- 49
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- IBIO - iBio, Inc. - Common Stock, par value $0.001 per share is tracked under CUSIP 451033708.
- 49 institutions reported positions in Q4 2025.
- 14 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 49 to 6 between Q4 2025 and Q1 2026.
- Reported value moved from $31,555,271 to $168,667.
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 49 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 451033708?
CUSIP 451033708 identifies IBIO - iBio, 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 451033708:
Significant Owners of iBio, Inc. - Common Stock, par value $0.001 per share (IBIO) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Point72 Asset Management, L.P. | 9.9% | $9,716,600 | 14,289,118 | Point72 Asset Management, L.P. | 22 Aug 2025 | |||
| Vestal Point Capital, LP | 9.9% | $3,518,752 | 4,275,000 | Vestal Point Capital, LP | 30 Sep 2025 | |||
| Affinity Asset Advisors, LLC | 10% | 0% | $4,627,194 | +$424,252 | 2,401,616 | +10% | Affinity Asset Advisors, LLC | 22 Jan 2026 |
| Cormorant Asset Management, LP | 10% | $1,850,337 | 2,248,010 | Cormorant Asset Management, LP | 30 Sep 2025 | |||
| EcoR1 Capital, LLC | 9.9% | $2,673,600 | 2,228,000 | EcoR1 Capital, LLC | 10 Dec 2025 | |||
| SILVERARC CAPITAL MANAGEMENT, LLC | 10% | $1,795,528 | 2,181,422 | SilverArc Capital Management, LLC | 30 Sep 2025 | |||
| Adage Capital Management, L.P. | 10% | $1,795,528 | 2,181,422 | Adage Capital Management, L.P. | 30 Sep 2025 | |||
| Frazier Life Sciences Public Fund, L.P. | 8.7% | $2,344,160 | 1,953,467 | Frazier Life Sciences Public Fund, L.P. | 09 Dec 2025 | |||
| Logos Global Management LP | 4.6% | -48% | $3,810,000 | -$1,270,000 | 1,500,000 | -25% | Logos Global Management LP | 31 Dec 2025 |
| ADAR1 Capital Management, LLC | 4.4% | -55% | $3,433,244 | -$1,123,655 | 1,351,671 | -25% | ADAR1 Capital Management, LLC | 31 Dec 2025 |
| INTEGRATED CORE STRATEGIES (US) LLC | 5.2% | $2,381,068 | 1,235,827 | Millennium Management LLC | 15 Jan 2026 | |||
| Ikarian Capital, LLC | 5% | $947,430 | 1,151,051 | Ikarian Capital, LLC | 30 Sep 2025 | |||
| Crutcher Patrick J | 3.1% | -56% | $635,283 | +$112,748 | 847,044 | +22% | Patrick J. Crutcher | 30 Jun 2025 |
| Opaleye Management Inc. | 7.6% | $787,500 | 750,000 | Opaleye Management, Inc. | 31 Dec 2024 |
As of 31 Dec 2025, 49 institutional investors reported holding 16,339,467 shares of iBio, Inc. - Common Stock, par value $0.001 per share (IBIO). This represents 53% of the company’s total 30,719,795 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of iBio, Inc. - Common Stock, par value $0.001 per share (IBIO) together control 52% 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 |
|---|---|---|---|---|---|
| EcoR1 Capital, LLC | 7.3% | 2,228,000 | 0.2% | $4,300,040 | |
| Affinity Asset Advisors, LLC | 6.7% | 2,057,200 | 0.29% | $3,970,396 | |
| Logos Global Management LP | 6.5% | 2,000,000 | 0.26% | $3,860,000 | |
| Frazier Life Sciences Management, L.P. | 6.4% | 1,953,467 | 0.1% | $3,770,191 | |
| Balyasny Asset Management L.P. | 3.6% | 1,096,179 | +10440% | 0% | $2,115,625 |
| Ikarian Capital, LLC | 3.1% | 957,062 | +55% | 0.24% | $1,847,130 |
| VANGUARD GROUP INC | 2.9% | 883,149 | +222% | 0% | $1,704,478 |
| Sio Capital Management, LLC | 2.4% | 740,000 | 0.24% | $1,428,200 | |
| AMERIPRISE FINANCIAL INC | 1.9% | 584,368 | +21% | 0% | $1,127,831 |
| TWO SIGMA INVESTMENTS, LP | 1.5% | 456,333 | 0% | $880,723 | |
| ADAR1 Capital Management, LLC | 1.3% | 405,531 | +1402% | 0.06% | $782,675 |
| RENAISSANCE TECHNOLOGIES LLC | 1.2% | 353,339 | 0% | $681,944 | |
| Monashee Investment Management LLC | 0.89% | 274,862 | 0.3% | $530,484 | |
| BOOTHBAY FUND MANAGEMENT, LLC | 0.83% | 254,412 | +44% | 0.01% | $491,015 |
| Hudson Bay Capital Management LP | 0.79% | 242,076 | 0% | $467,207 | |
| NOESIS CAPITAL MANGEMENT CORP | 0.73% | 224,200 | 0.06% | $432,706 | |
| GEODE CAPITAL MANAGEMENT, LLC | 0.72% | 222,610 | +47% | 0% | $429,637 |
| Walleye Capital LLC | 0.65% | 198,375 | 0% | $382,864 | |
| Jefferies Financial Group Inc. | 0.52% | 160,000 | 0% | $308,800 | |
| UBS Group AG | 0.41% | 126,556 | +12655500% | 0% | $244,253 |
| MARSHALL WACE, LLP | 0.39% | 121,286 | 0% | $234,082 | |
| BANK OF AMERICA CORP /DE/ | 0.38% | 115,793 | +79757% | 0% | $223,481 |
| TWO SIGMA ADVISERS, LP | 0.35% | 108,400 | 0% | $209,212 | |
| SILVERARC CAPITAL MANAGEMENT, LLC | 0.35% | 106,000 | 0.03% | $204,580 | |
| JANE STREET GROUP, LLC | 0.34% | 105,700 | 0% | $204,001 |
Institutional Holders of iBio, Inc. - Common Stock, par value $0.001 per share (IBIO) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 88,772 | $168,667 | +$126,948 | $1.90 | 6 |
| 2025 Q4 | 16,339,467 | $31,555,271 | +$26,570,216 | $1.93 | 49 |
| 2025 Q3 | 3,569,988 | $2,955,323 | +$299,071 | $0.83 | 32 |
| 2025 Q2 | 3,204,109 | $2,444,153 | -$225,284 | $0.76 | 30 |
| 2025 Q1 | 2,587,118 | $10,399,905 | +$550,651 | $4.02 | 33 |
| 2024 Q4 | 2,612,402 | $6,400,381 | +$11,561 | $2.45 | 29 |
| 2024 Q3 | 2,607,512 | $5,788,674 | +$356,141 | $2.22 | 31 |
| 2024 Q2 | 2,451,117 | $5,171,853 | -$1,674,085 | $2.11 | 26 |
| 2024 Q1 | 2,885,311 | $11,469,753 | +$10,566,308 | $4.06 | 26 |
| 2023 Q4 | 251,385 | $344,588 | +$344,585 | $1.37 | 20 |
| 2023 Q3 | 0 | $0 | -$5 | $2.20 | 0 |
| 2023 Q2 | 8 | $5 | $0.62 | 1 | |
| 2023 Q1 | 8 | $17 | +$17 | $2.12 | 1 |