William D. Clark - 14 Oct 2026 Form 4 Insider Report for iBio, Inc. (IBIO)

Reporting relationship: Director
Issuer ticker: IBIO
Reported as of: 14 Oct 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 15 Oct 2026, 18:31:53 UTC
Prior SEC filing: 11 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Marc Banjak, Attorney-in-fact

Key filing fact

William D. Clark filed Form 4 for iBio, Inc. (IBIO) on 15 Oct 2026.

Key facts

This page summarizes William D. Clark's Form 4 filing for iBio, Inc. (IBIO).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 15 Oct 2026, 18:31.

Change

Previous filing in this sequence was filed on 11 Jun 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001355415 Primary reporting owner

Clark William D

Relationship: Director
Address: C/O IBIO, INC., 11750 SORRENTO VALLEY ROAD, SUITE 200, SAN DIEGO
Signature: /s/ Marc Banjak, Attorney-in-fact
Signature date: 15 Oct 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

IBIO transaction Derivative

Stock Option (right to buy)

Award

Transaction value
Shares: +38,000
Change %
Price: $0.000000^*
Shares after: 38,000
Date: 14 Oct 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 38,000
Exercise price: $0.7800
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The options vest pro rata in monthly installments over twelve months, with the first installment vesting one month after the grant date, subject to the Reporting Person's continued service through each applicable vesting date.