RESEARCH FRONTIERS INC

8-K · form8-k.htm

0000793524

 2026-06-02
 2026-06-02

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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): June 2, 2026

  

  

  

 RESEARCH
FRONTIERS INCORPORATED

 (EXACT
NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

  

 delaware
  
 000-14893
  
 11-2103466

 (STATE
 OR OTHER JURISDICTION
  
 (COMMISSION
  
 (IRS
 EMPLOYER

 OF
 INCORPORATION)
  
 FILE
 NUMBER)
  
 IDENTIFICATION
 NO.)

  

 240
CROSSWAYS PARK DRIVE

 WOODBURY ,
 new york 11797-2033

 (ADDRESS
OF PRINCIPAL EXECUTIVE OFFICES AND ZIP CODE)

  

 REGISTRANT’S
TELEPHONE NUMBER, INCLUDING AREA CODE: (516) 364-1902

  

 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-4(c)) [240.13e-4(c))

  

 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 $0.0001 per share
  
 REFR
  
 The
 NASDAQ Stock Market

  

 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. ☐

  

  

  

  

  

  

 Item
3.01. Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing.

  

 On
June 2, 2026, Research Frontiers Incorporated (the “Company”) received two deficiency notification letters from the Listing
Qualifications Department of The Nasdaq Stock Market LLC (“Nasdaq”).

  

 The
first notification letter advised the Company that, based upon the closing bid price of the Company’s common stock for the 30 consecutive
business days from April 15, 2026 to June 1, 2026, the Company no longer satisfies the $1.00 minimum bid price requirement for continued
listing on The Nasdaq Capital Market, as set forth in Nasdaq Listing Rule 5550(a)(2).

  

 The
second notification letter advised the Company that, based upon Nasdaq’s review of the Company’s Market Value of Listed Securities
(“MVLS”) for the 30 consecutive business days from April 20, 2026 to June 1, 2026, the Company no longer satisfies the $35
million minimum MVLS requirement for continued listing on The Nasdaq Capital Market, as set forth in Nasdaq Listing Rule 5550(b)(2).
The notification letter also noted that the Company does not currently meet the alternative continued listing standards under Nasdaq
Listing Rules 5550(b)(1) and 5550(b)(3), relating to minimum stockholders’ equity and net income from continuing operations, respectively.

  

 The
Nasdaq notifications have no immediate effect on the listing or trading of the Company’s common stock, which will continue to trade
on The Nasdaq Capital Market under the symbol “REFR.”

  

 In
accordance with Nasdaq Listing Rules 5810(c)(3)(A) and 5810(c)(3)(C), the Company has been provided 180 calendar days, or until November
30, 2026, to regain compliance with the minimum bid price requirement and the MVLS requirement, respectively.

  

 To
regain compliance with the minimum bid price requirement, the closing bid price of the Company’s common stock must be at least
$1.00 per share for a minimum of ten consecutive business days during the compliance period, unless Nasdaq exercises its discretion to
require a longer period as permitted under its rules.

  

 To
regain compliance with the MVLS requirement, the Company’s MVLS must close at $35 million or more for a minimum of ten consecutive
business days during the compliance period, unless Nasdaq exercises its discretion to require a longer period as permitted under its
rules.

  

 The
Company intends to monitor the closing bid price of its common stock and its MVLS and will consider available options to regain compliance
with the applicable Nasdaq continued listing requirements. The Company’s objective is to regain compliance through improved market
valuation and bid-price performance, and the Company does not currently intend to effect a reverse stock split for the purpose of regaining
compliance. However, there can be no assurance that the Company will regain compliance with either requirement within the applicable
compliance period, or at all, or that the Company will otherwise remain in compliance with the other Nasdaq continued listing standards.

  

 Item
9.01. Financial Statements and Exhibits.

  

 (c)
Exhibits.

  

 104
 Cover Page Interactive Data File (embedded within the Inline
XBRL document)

  

  

  

  

 SIGNATURES

  

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

  

  
 RESEARCH
 FRONTIERS INCORPORATED

  
  
  

  
  
 /s/
 Joseph M. Harary

  
 By:
 Joseph
 M. Harary

  
 Title:
 President
 and CEO

 Dated:
 June 5, 2026