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iBio, Inc.

IBIO Net selling
CIK 0001420720 #4524 in the set updated 20 Sep 2026
Bought (120 mo)
$6.65M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$98.49M
$0.00 on a plan · $5.41M straight out of an exercise
Sold at will
$93.08M
22 of 26 sales
Net
−$91.84M
−$86.43M against sales at will

By person

14 insiders · 43 transactions
0.0×

Dr. Martin B. Brenner holds only 0.0 times base salary in stock. $53.95K of shares against $580.00K in salary for 2026.

Salary from the company's own proxy. The shares are what Dr. Martin B. Brenner last reported holding, valued at $1.76, the price Common Stock was last bought or sold at on the open market here, on 26 Mar 2026.

Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Eastern Capital LTD entity
10% owner
$5.90M (3)
$98.17M (6)
−$92.27M
8,629,693
$15.19M
Parada Antonio Bernardino Guimaraes
Director
$500.00K (1)
+$500.00K
183,823
$323.53K
ERWIN ROBERT L
President
$204.06K (2) scheduled
−$204.06K
108,108
$190.27K
0.0%
Duran Felipe
Chief Financial Officer
$75.13K (2)
+$75.13K
35,974
$63.31K
Arkowitz David
Director
$50.00K (1)
+$50.00K
18,382
$32.35K
Banjak Marc
Chief Legal Officer
$48.05K (3)
+$48.05K
25,000
$44.00K
+1,233%
Maddux Randy Joe
Chief Operating Officer
$25.44K (1)
−$25.44K
271,757
$478.29K
Sender Gary
Director
$25.00K (1)
+$25.00K
9,191
$16.18K
Mullaney James P.
Chief Financial Officer
$18.11K (1) scheduled
−$18.11K
0
$0.00
Brenner Martin
See Remarks
$49.92K (2)
$65.72K (15)
−$15.80K
30,652
$53.95K
Lutz Robert Matthew
See Remarks
$8.51K (1)
−$8.51K
102,165
$179.81K
Clark William D
Director
$5.00K (1)
+$5.00K
1,838
$3.23K
DART KENNETH BRYAN
10% owner
(1)
$0.00
Isett Thomas Francis 3rd
CEO and Executive Chairman
1,275,000
$2.24M
+30.8%

No percentages here. This company's share count has moved by a factor of 5.8 over the window, from 8,637,895 to 49,678,561 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Insider
Date
Role
Action
Shares
Price
Amount
Banjak Marc
26 Mar 2026
Chief Legal Officer
Buy
1,434
$1.76
$2.52K
Banjak Marc
26 Mar 2026
Chief Legal Officer
Buy
12,500
$1.64
$20.53K
Brenner Martin
19 Mar 2026
See Remarks
Buy
12,336
$2.02
$24.92K
Duran Felipe
19 Mar 2026
Chief Financial Officer
Buy
24,835
$2.02
$50.13K
Sender Gary
10 Jan 2025
Director
Buy
9,191
$2.72
$25.00K
Parada Antonio Bernardino Guimaraes
10 Jan 2025
Director
Buy indirect
183,823
$2.72
$500.00K
Clark William D
10 Jan 2025
Director
Buy
1,838
$2.72
$5.00K
Arkowitz David
10 Jan 2025
Director
Buy
18,382
$2.72
$50.00K
Banjak Marc
10 Jan 2025
Chief Legal Officer
Buy
9,191
$2.72
$25.00K
Brenner Martin
10 Jan 2025
See Remarks
Buy
9,191
$2.72
$25.00K
Duran Felipe
10 Jan 2025
Chief Financial Officer
Buy
9,191
$2.72
$25.00K
Brenner Martin
1 Nov 2023
See Remarks
Sell
4,881
$0.27
$1.30K
Brenner Martin
3 Oct 2023
See Remarks
Sell
5,267
$0.30
$1.59K
Brenner Martin
2 Oct 2023
See Remarks
Sell
4,215
$0.31
$1.31K
Brenner Martin
28 Aug 2023
See Remarks
Sell
5,011
$0.31
$1.53K
Brenner Martin
27 Jul 2023
See Remarks
Sell
35
$0.51
$17.85
Brenner Martin
27 Jul 2023
See Remarks
Sell
4,480
$0.51
$2.29K
Brenner Martin
12 Jul 2023
See Remarks
Sell
47,020
$0.59
$27.52K
Brenner Martin
21 Jun 2023
See Remarks
Sell
100
$0.68
$68.32
Brenner Martin
21 Jun 2023
See Remarks
Sell
225
$0.69
$154.51
Brenner Martin
21 Jun 2023
See Remarks
Sell
3,859
$0.68
$2.63K
Brenner Martin
22 May 2023
See Remarks
Sell
24
$0.95
$22.68
Brenner Martin
22 May 2023
See Remarks
Sell
4,158
$0.94
$3.89K
Brenner Martin
24 Apr 2023
See Remarks
Sell
4,382
$1.20
$5.26K
Brenner Martin
23 Mar 2023
See Remarks
Sell
5,213
$2.13
$11.11K
Brenner Martin
21 Feb 2023
See Remarks
Sell
3,976
$1.77
$7.04K
Lutz Robert Matthew
10 Mar 2022
See Remarks
Sell
24,625
$0.35
$8.51K
Maddux Randy Joe
7 Dec 2021
Chief Operating Officer
Sell
37,243
$0.68
$25.44K
Eastern Capital LTD
11 Aug 2020
10% owner
Sell
15,864,436
$2.92
$46.33M
Eastern Capital LTD
10 Aug 2020
10% owner
Sell
7,264,864
$3.91
$28.43M
Eastern Capital LTD
7 Aug 2020
10% owner
Sold after exercise
1,355,604
$3.83
$5.19M
Eastern Capital LTD
6 Aug 2020
10% owner
Sell
2,768,137
$4.18
$11.57M
Eastern Capital LTD
5 Aug 2020
10% owner
Sell
900,000
$4.46
$4.01M
Eastern Capital LTD
4 Aug 2020
10% owner
Sell
600,000
$4.39
$2.64M
ERWIN ROBERT L
4 Jun 2020
President
Sold after exercise
28,268
$1.71
$48.34K
ERWIN ROBERT L
2 Jun 2020
President
Sold after exercise
96,124
$1.62
$155.72K
Mullaney James P.
27 May 2020
Chief Financial Officer
Sold after exercise
11,250
$1.61
$18.11K
Isett Thomas Francis 3rd
19 Mar 2020
CEO and Executive Co-Chairman
Exercised, kept
100,000
$0.20
$20.00K
Isett Thomas Francis 3rd
17 Mar 2020
CEO and Executive Co-Chairman
Exercised, kept
78,024
$0.22
$17.17K
Eastern Capital LTD
12 Jul 2018
10% owner
Buy
2,200,000
$0.90
$1.98M
Eastern Capital LTD
26 Jun 2018
10% owner
Buy
1,683,334
$0.90
$1.52M
Eastern Capital LTD
30 Nov 2017
10% owner
Buy
12,000,000
$0.20
$2.40M
DART KENNETH BRYAN
23 Feb 2017
10% owner
Buy indirect
1
no price

What was left out

Form 4 filings counted 133
Amendments (4/A) skipped 5
Filings about a different issuer 0
Unreadable filings 0
Joint filings 5
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 4
Sales at will 22
Transactions with no price 1
Shares from compensation/vesting 30,466,215
Sales filed before the plan box existed 8
History held since 27 Feb 2017