Martin Brenner - 20 Oct 2025 Form 4 Insider Report for iBio, Inc. (IBIO)

Role: Chief Executive Officer and Chief Scientific Officer, Director
Signature: /s/ Martin Brenner
Issuer symbol: IBIO
Transactions as of: 20 Oct 2025
Net transactions value: $0
Form type: 4
Filing time: 22 Oct 2025, 18:27:17 UTC
Previous filing: 24 Feb 2025
Next filing: 30 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Brenner Martin	Chief Executive Officer and Chief Scientific Officer, Director	C/O IBIO, INC., 11750 SORRENTO VALLEY ROAD, SUITE 200, SAN DIEGO	/s/ Martin Brenner	22 Oct 2025	0001770235

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	IBIO	Stock Option (right to buy)	Award	$0	+180,000		$0.000000	180,000	20 Oct 2025	Common Stock	180,000	$0.8930	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These options vest as follows: 25% of the shares of common stock underlying the options granted will vest on the one-year anniversary of the grant date and after the one-year anniversary of the grant date, the remainder of the shares of common stock underlying the options granted will vest in equal quarterly installments over a 36-month period, provided that the reporting person remains employed by iBio, Inc.

Content

These options vest as follows: 25% of the shares of common stock underlying the options granted will vest on the one-year anniversary of the grant date and after the one-year anniversary of the grant date, the remainder of the shares of common stock underlying the options granted will vest in equal quarterly installments over a 36-month period, provided that the reporting person remains employed by iBio, Inc.

Remarks:

Chief Executive Officer and Chief Scientific Officer