iBio's top three insider shareholders as of March 23, 2026 are Antonio Bernardino Guimaraes Parada (Director, 183.82K shares), Robert Matthew Lutz (See Remarks, 102.17K shares), David Arkowitz (Director, 18.38K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Antonio Bernardino Guimaraes Parada | 0 | 183,823 | 13 Jan, 2025 | |
| Robert Matthew Lutz | See Remarks | 102,165 | 0 | 15 Nov, 2022 |
| Felipe Duran | Chief Financial Officer | 35,974 | 0 | 23 Mar, 2026 |
| Martin Brenner | See Remarks | 30,652 | 0 | 23 Mar, 2026 |
| David Arkowitz | 18,382 | 0 | 13 Jan, 2025 | |
| Martin Brenner | See Remarks | 18,316 | 0 | 13 Jan, 2025 |
| Felipe Duran | Chief Financial Officer | 11,139 | 0 | 13 Jan, 2025 |
| Marc Banjak | Chief Legal Officer | 11,066 | 0 | 13 Jan, 2025 |
| Gary Sender | 9,191 | 0 | 13 Jan, 2025 | |
| William D Clark | 1,838 | 0 | 13 Jan, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 19 Mar, 2026 | Felipe Duran | Common Stock | A | 24,835 | $2.02 | 35,974 | D | P |
| 19 Mar, 2026 | Martin Brenner | Common Stock | A | 12,336 | $2.02 | 30,652 | D | P |
| 28 Jan, 2026 | Martin Brenner | Stock Option (right to buy) | A | 479,000 | $0.00 | 479,000 | D | A |
| 28 Jan, 2026 | Felipe Duran | Stock Option (right to buy) | A | 179,000 | $0.00 | 179,000 | D | A |
| 28 Jan, 2026 | Felipe Duran | Stock Option (right to buy) | A | 179,000 | $0.00 | 179,000 | D | A |
| 28 Jan, 2026 | Marc Banjak | Stock Option (right to buy) | A | 146,000 | $0.00 | 146,000 | D | A |
| 28 Jan, 2026 | Martin Brenner | Stock Option (right to buy) | A | 479,000 | $0.00 | 479,000 | D | A |
| 20 Nov, 2025 | Evert B. Schimmelpennink | Stock Option (right to buy) | A | 13,500 | $0.00 | 13,500 | D | A |
| 20 Nov, 2025 | Alexandra Kropotova | Stock Option (right to buy) | A | 13,500 | $0.00 | 13,500 | D | A |
| 20 Nov, 2025 | Gary Sender | Stock Option (right to buy) | A | 13,500 | $0.00 | 13,500 | D | A |
| 20 Nov, 2025 | William D Clark | Stock Option (right to buy) | A | 13,500 | $0.00 | 13,500 | D | A |
| 20 Nov, 2025 | David Arkowitz | Stock Option (right to buy) | A | 13,500 | $0.00 | 13,500 | D | A |
| 20 Nov, 2025 | Antonio Bernardino Guimaraes Parada | Stock Option (right to buy) | A | 13,500 | $0.00 | 13,500 | D | A |
| 20 Oct, 2025 | Felipe Duran | Stock Option (right to buy) | A | 75,000 | $0.00 | 75,000 | D | A |
| 20 Oct, 2025 | Marc Banjak | Stock Option (right to buy) | A | 55,000 | $0.00 | 55,000 | D | A |
| 20 Oct, 2025 | Felipe Duran | Stock Option (right to buy) | A | 75,000 | $0.00 | 75,000 | D | A |
| 20 Oct, 2025 | Martin Brenner | Stock Option (right to buy) | A | 180,000 | $0.00 | 180,000 | D | A |
| 20 Oct, 2025 | Martin Brenner | Stock Option (right to buy) | A | 180,000 | $0.00 | 180,000 | D | A |
| 21 Feb, 2025 | Martin Brenner | Stock Option (right to buy) | A | 230,700 | $0.00 | 230,700 | D | A |
| 21 Feb, 2025 | Felipe Duran | Stock Option (right to buy) | A | 84,700 | $0.00 | 84,700 | D | A |