iBio, Inc. (IBIO) Insider Ownership

Historic Insider Ownership Trends

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).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
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