UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 15

CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.

Commission File Number: 001-40562

Mountain Crest Acquisition Corp. IV

(Exact name of registrant as specified in its charter)

311 West 43rd Street

12th Floor

New York, New York 10036

646-493-6558

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Common Stock, Units and Rights.
(Title of each class of securities covered by this Form)

N/A

(Titles of all other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains)

Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

Rule 12g-4(a)(1) ☒

Rule 12g-4(a)(2) ☐

Rule 12h-3(b)(1)(i) ☐

Rule 12h-3(b)(1)(ii) ☐

Rule 15d-6 ☐

Rule 15d-22(b) ☐

Approximate number of holders of record as of the certification or notice date: Common Stock: One (1)

Pursuant to the requirements of the Securities Exchange Act of 1934, Mountain Crest Acquisition Corp. IV has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.