iBio, Inc. (IBIO) Insider Ownership

Historic Insider Ownership Trends

Based on data from the past 90 days ending February 19, 2026, iBio's three largest insider shareholders are Director Antonio Bernardino Guimaraes Parada (183.82K shares), Director David Arkowitz (18.38K shares), Director Martin Brenner (18.32K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Antonio Bernardino Guimaraes Parada 183,823 13 Jan, 2025
Robert Matthew Lutz Nan 5,108 15 Nov, 2022
David Arkowitz 18,382 13 Jan, 2025
Martin Brenner Nan 18,316 13 Jan, 2025
Felipe Duran Chief Financial Officer 11,139 13 Jan, 2025
Marc Banjak Chief Legal Officer 11,066 13 Jan, 2025
Gary Sender 9,191 13 Jan, 2025
William D Clark 1,838 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
10 Jan, 2025 David Arkowitz Common Stock A 18,382 $2.72 18,382 D P
10 Jan, 2025 William D Clark Common Stock A 1,838 $2.72 1,838 D P
10 Jan, 2025 Gary Sender Common Stock A 9,191 $2.72 9,191 D P
10 Jan, 2025 Martin Brenner Common Stock A 9,191 $2.72 18,316 D P
10 Jan, 2025 Felipe Duran Common Stock A 9,191 $2.72 11,139 D P
10 Jan, 2025 Marc Banjak Common Stock A 9,191 $2.72 11,066 D P
10 Jan, 2025 Antonio Bernardino Guimaraes Parada Common Stock A 183,823 $2.72 183,823 I P
01 Nov, 2023 Martin Brenner Common Stock D 4,881 $0.27 9,125 D S
03 Oct, 2023 Martin Brenner Common Stock D 5,267 $0.30 9,369 D S
02 Oct, 2023 Martin Brenner Common Stock D 4,215 $0.31 9,633 D S
28 Aug, 2023 Martin Brenner Common Stock D 5,011 $0.31 9,843 D S
27 Jul, 2023 Martin Brenner Common Stock D 4,480 $0.51 10,096 D S
27 Jul, 2023 Martin Brenner Common Stock D 35 $0.51 10,094 D S
12 Jul, 2023 Martin Brenner Common Stock D 47,020 $0.59 10,320 D S
26 Jun, 2023 Martin Brenner Common Stock A 75,833 $0.00 12,671 D A
22 Jun, 2023 Martin Brenner Common Stock D 75,833 $0.00 8,879 D D
21 Jun, 2023 Martin Brenner Common Stock D 100 $0.68 12,671 D S
21 Jun, 2023 Martin Brenner Common Stock D 225 $0.69 12,676 D S
21 Jun, 2023 Martin Brenner Common Stock D 3,859 $0.68 12,687 D S
22 May, 2023 Martin Brenner Common Stock D 4,158 $0.94 12,881 D S