Martin Brenner

Insider

First SEC filing: Jan. 19, 2021 · Latest: Jan. 19, 2021

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Compensation Executive pay disclosed in company proxy statements.

Insider at

IBIO buying March 19, 2026

Insider transactions

1 buys (P) 0 sells (S) Net: $24,919 + 14 non-open-market transactions below Avg return of open purchases vs now: -28.2% last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

14 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 19, 2026	IBIO	P	12,336	$2.02	$24,919	30,652 Direct	+67.35%	Acquired	-28.2% (price as of 2026-08-20)
Jan. 28, 2026	IBIO	A	479,000	—	—	479,000 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 20, 2025	IBIO	A	180,000	—	—	180,000 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 21, 2025	IBIO	A	230,700	—	—	230,700 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 10, 2025	IBIO	P	9,191	$2.72	$25,000	18,316 Direct	+100.72%	Acquired	-46.7% (price as of 2026-08-20)
May 9, 2024	IBIO	A	110,000	—	—	110,000 Direct	—	Acquired	(price as of 2026-08-20)
May 9, 2024	IBIO	A	147,300	—	—	147,300 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 1, 2023	IBIO	S	4,881	$0.27	$1,318	182,502 Direct	-2.60%	Disposed	-73.1% (price as of 2026-08-20)
Oct. 3, 2023	IBIO	S	5,267	$0.30	$1,580	187,383 Direct	-2.73%	Disposed	-75.8% (price as of 2026-08-20)
Oct. 2, 2023	IBIO	S	4,215	$0.31	$1,307	192,650 Direct	-2.14%	Disposed	-76.6% (price as of 2026-08-20)
Aug. 28, 2023	IBIO	S	5,011	$0.31	$1,553	196,865 Direct	-2.48%	Disposed	-76.6% (price as of 2026-08-20)
Aug. 23, 2023	IBIO	A	120,000	—	—	120,000 Direct	—	Acquired	(price as of 2026-08-20)
July 27, 2023	IBIO	S	35	$0.51	$18	201,876 Direct	-0.02%	Disposed	-85.8% (price as of 2026-08-20)
July 27, 2023	IBIO	S	4,480	$0.51	$2,285	201,911 Direct	-2.17%	Disposed	-85.8% (price as of 2026-08-20)
July 12, 2023	IBIO	S	47,020	$0.59	$27,742	206,391 Direct	-18.55%	Disposed	-87.7% (price as of 2026-08-20)
June 26, 2023	IBIO	A	75,833	—	—	253,411 Direct	+42.70%	Acquired	(price as of 2026-08-20)
June 22, 2023	IBIO	D	75,833	—	—	177,578 Direct	-29.92%	Disposed	(price as of 2026-08-20)
June 21, 2023	IBIO	S	100	$0.68	$68	253,411 Direct	-0.04%	Disposed	-89.3% (price as of 2026-08-20)
June 21, 2023	IBIO	S	225	$0.69	$155	253,511 Direct	-0.09%	Disposed	-89.5% (price as of 2026-08-20)
June 21, 2023	IBIO	S	3,859	$0.68	$2,624	253,736 Direct	-1.50%	Disposed	-89.3% (price as of 2026-08-20)
May 22, 2023	IBIO	S	24	$0.94	$23	257,595 Direct	-0.01%	Disposed	-92.3% (price as of 2026-08-20)
May 22, 2023	IBIO	S	4,158	$0.94	$3,909	257,619 Direct	-1.59%	Disposed	-92.3% (price as of 2026-08-20)
April 24, 2023	IBIO	S	4,382	$1.20	$5,258	261,777 Direct	-1.65%	Disposed	-94.0% (price as of 2026-08-20)
March 31, 2023	IBIO	A	50,000	—	—	266,159 Direct	+23.13%	Acquired	(price as of 2026-08-20)
March 23, 2023	IBIO	S	5,213	$2.13	$11,104	216,159 Direct	-2.35%	Disposed	-96.6% (price as of 2026-08-20)
Feb. 21, 2023	IBIO	S	3,976	$1.77	$7,038	221,372 Direct	-1.76%	Disposed	-95.9% (price as of 2026-08-20)
Jan. 20, 2023	IBIO	A	130,000	—	—	225,348 Direct	+136.34%	Acquired	(price as of 2026-08-20)
Nov. 11, 2022	IBIO	A	95,348	—	—	95,348 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 29, 2022	IBIO	A	700,000	—	—	700,000 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 23, 2021	IBIO	A	700,000	—	—	700,000 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 18, 2021	IBIO	A	500,000	—	—	500,000 Direct	—	Acquired	(price as of 2026-08-20)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Jan. 28, 2026	IBIO	Stock Option (right to buy) [F1]	Common Stock (479,000)	$2.23	Jan. 27, 2036	479,000	Acquired
Oct. 20, 2025	IBIO	Stock Option (right to buy) [F1]	Common Stock (180,000)	$0.89	Oct. 19, 2035	180,000	Acquired
Feb. 21, 2025	IBIO	Stock Option (right to buy) [F1]	Common Stock (230,700)	$3.48	Feb. 20, 2035	230,700	Acquired
May 9, 2024	IBIO	Stock Option (right to buy) [F1]	Common Stock (110,000)	$1.88	May 9, 2034	110,000	Acquired
May 9, 2024	IBIO	Stock Option (right to buy) [F1]	Common Stock (147,300)	$1.88	May 9, 2034	147,300	Acquired
Aug. 23, 2023	IBIO	Stock Option (right to buy) [F1]	Common Stock (120,000)	$0.35	Aug. 23, 2033	120,000	Acquired
Aug. 29, 2022	IBIO	Stock Option (right to buy) [F1]	Common Stock (700,000)	$0.28	Aug. 29, 2032	700,000	Acquired
Aug. 23, 2021	IBIO	Stock Option (right to buy) [F1]	Common Stock (700,000)	$1.26	Aug. 22, 2031	700,000	Acquired
Jan. 18, 2021	IBIO	Stock Option	Common Stock (500,000)	$1.47	Jan. 18, 2031	500,000	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

IBIO

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2022	$405,000	—	—	—	—	—	—	$1,336,189

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.