false 0001659617 0001659617 2025-11-20 2025-11-20
 
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 20, 2025
 
logobig.jpg
 
MOLECULIN BIOTECH, INC.
(Exact Name of Registrant as Specified in its Charter)
Delaware
001-37758
47-4671997
(State or Other Jurisdiction of Incorporation or Organization)
(Commission File No.)
(I.R.S. Employer Identification No.)
 
5300 Memorial Drive, Suite 950, Houston, TX 77007
(Address of principal executive offices and zip code)
 
(713) 300-5160
(Registrant’s telephone number, including area code)
(Former name or former address, if changed from last report)
 
 
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):
 
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
Soliciting material pursuant to Rule 14a-12 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-14(c))
 
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 check mark 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. ☐
 
Securities registered pursuant to Section 12(b) of the Act:
 
Title of each class
Trading Symbol (s)
Name of each exchange on which registered
Common Stock, par value $.001 per share
MBRX
The NASDAQ Stock Market LLC
 
 

 
 
Item 3.01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing.
 
As previously disclosed, on May 23, 2025, Moleculin Biotech, Inc. (the “Company”) received a letter from the staff of the Listing Qualifications Department (the “Staff”) of The Nasdaq Stock Market LLC (“Nasdaq”), which notified the Company that it did not comply with Nasdaq’s Listing Rule 5550(b)(1) (the “Listing Rule”), which requires that the Company maintain a minimum of $2.5 million in stockholders’ equity, and that the Company also did not meet the alternatives of market value of listed securities or net income from continuing operations set forth in the Listing Rule.
 
The Staff had previously granted the Company an extension until November 19, 2025 to regain compliance with the Listing Rule. On November 20, 2025, the Company received a delist determination letter from the Staff (the “Nasdaq Notice”) advising the Company that the Staff had determined that the Company had not regained compliance with the Listing Rule. Accordingly, the Staff indicated that unless the Company requests a hearing panel (a “Panel”) appeal of the delist determination by November 28, 2025, its securities would be delisted on December 2, 2025.
 
The Company intends to appeal Nasdaq’s determination to a Panel pursuant to the procedures set forth in the Nasdaq Listing Rule 5800 Series to stay any suspension pending the Panel’s determination and any further extension the Panel may grant. . Following the appeal request, the Company’s common stock will continue to trade on The Nasdaq Capital Market under the symbol “MBRX”.
 
 
 
SIGNATURE
 
Pursuant to the requirements of the Securities and Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
 
 
MOLECULIN BIOTECH, INC.
   
 
Date: November 21, 2025
By: /s/ Jonathan P. Foster
Jonathan P. Foster
Chief Financial Officer