iBio, Inc. (IBIO) ownership: Top institutional holder: Affinity Asset Advisors, LLC ($5.90M). Insider activity: Net Seller (4 buys, 16 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| Affinity Asset Advisors, LLC | 3107200.00 | $5.90M | 2026-03-31 |
| Frazier Life Sciences Management, L.P. | 1953467.00 | $3.71M | 2026-03-31 |
| EcoR1 Capital, LLC | 1583000.00 | $3.01M | 2026-03-31 |
| MILLENNIUM MANAGEMENT LLC | 1549850.00 | $2.94M | 2026-03-31 |
| Logos Global Management LP | 1300000.00 | $2.47M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1088299.00 | $2.07M | 2026-03-31 |
| Balyasny Asset Management L.P. | 1010955.00 | $1.92M | 2026-03-31 |
| Ikarian Capital, LLC | 957062.00 | $1.82M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-07-31 | |
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 | |
| Buy | null | 2026-03-26 | |
| Sell | null | 2026-03-26 | |
| Sell | null | 2026-03-26 | |
| Buy | null | 2026-03-26 | |
| Buy | null | 2026-03-19 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.