iBio regains Nasdaq compliance; bid price meets $1.00 minimum

iBio, Inc. reported it has regained compliance with Nasdaq Listing Rule 5550(a)(2) after receiving notice from Nasdaq on November 4, 2025.

Rhea-AI Filing Summary

iBio, Inc. reported it has regained compliance with Nasdaq Listing Rule 5550(a)(2) after receiving notice from Nasdaq on November 4, 2025. The rule requires a minimum closing bid price of $1.00 per share. The company had previously been notified on July 29, 2025 that it was out of compliance after its stock closed below $1.00 for 30 consecutive business days from June 13, 2025 to July 28, 2025. Nasdaq has indicated the matter is closed, supporting the company’s continued listing on The Nasdaq Capital Market.

8-K Event Classification

Item 8.01 — Other Events

1 item

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did IBIO announce in its 8-K?

IBIO announced it has regained compliance with Nasdaq Listing Rule 5550(a)(2) following notice from Nasdaq on November 4, 2025.

Which Nasdaq rule is involved and what is the threshold?

The company is compliant with Rule 5550(a)(2), which requires a minimum closing bid price of $1.00 per share.

When was IBIO previously notified of non-compliance?

Nasdaq notified IBIO on July 29, 2025 after the stock stayed below $1.00 for 30 consecutive business days from June 13, 2025 to July 28, 2025.

What does regaining compliance mean for IBIO’s listing?

Nasdaq stated the matter is now closed, supporting IBIO’s continued listing on The Nasdaq Stock Market.

Does this filing include financial results or transactions?

No. It reports an Other Events update on Nasdaq compliance; no earnings or major transactions are included.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 11/04/2025 - 04:03 PM EST Learn about SEC filing dates

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (date of earliest event reported): November 4, 2025

iBio, Inc.

(Exact name of registrant as specified in charter)

Delaware

(State or other jurisdiction of incorporation)

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001-35023	26-2797813
(Commission File Number)	(IRS Employer Identification No.)

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11750 Sorrento Valley Road, Suite 200

San Diego, California 92121

(Address of principal executive offices and zip code)

(979) 446-0027

(Registrant’s telephone number including area code)

N/A

(Former Name and Former Address)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of registrant under any of the following provisions:

☐   Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐   Soliciting material pursuant to Rule 14a-12(b) under the Exchange Act (17 CFR 240.14a-12)

☐   Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐   Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.001 par value per share	IBIO	The Nasdaq Stock Market LLC

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by checkmark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

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Item 8.01     Other Events.

On November 4, 2025, iBio, Inc. (the “Company”) received notice from the Listing Qualifications Department of The Nasdaq Stock Market LLC (“Nasdaq”) noting it has regained compliance with Nasdaq Lising Rule 5550(a)(2). As previously reported, on July 29, 2025, the Company received a letter from Nasdaq indicating the Company was not in compliance with the Nasdaq Listing Rule 5550(a)(2) because the Company’s common stock failed to maintain a minimum closing bid price of $1.00 per share over the previous 30 consecutive business days (June 13, 2025 to July 28, 2025), as required by Nasdaq Listing Rule 5550(a)(2). The matter is now closed.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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Date: November 4, 2025	IBIO, INC.
​	By:	/s/ Marc A. Banjak
		Name:	Marc A. Banjak
​	​	Title:	Chief Legal Counsel

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