Amended Statement of Changes in Beneficial Ownership (4/a)

FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^* Mountain Crest Holdings III LLC	2. Issuer Name and Ticker or Trading Symbol Mountain Crest Acquisition Corp. III [ MCAEU ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below)
(Last) (First) (Middle) 311 WEST 43RD STREET,, 12TH FLOOR	3. Date of Earliest Transaction (MM/DD/YYYY) 6/14/2021
(Street) NEW YORK, NY 10036 (City) (State) (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY) 6/16/2021	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	6/14/2021		P		2086 ⁽¹⁾	A	$10	1543586	D
Common Stock	6/14/2021		J⁽³⁾		83202	D	⁽³⁾	1460384	D

*Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)*
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)
Rights to purchase Common Stock	$0	6/14/2021		P		2086		⁽²⁾	⁽²⁾	Common Stock	208	⁽¹⁾	112086	D

Explanation of Responses:
(1)	The reporting person acquired units, consisting of shares and rights.
(2)	The rights automatically convert into one-tenth (1/10) of a share of common stock upon the consummation of the registrant's initial business combination, as described in the registrant's prospectus filed with the SEC.
(3)	On June 14, 2021, the underwriters of Mountain Crest Acquisition Corp III (the "Company") exercised the over-allotment option in part and canceled the remainder of the over-allotment option. In connection with the cancellation of the remainder of the over-allotment option, the Company has canceled an aggregate of 83,202 shares of common stock issued to Mountain Crest Holdings III LLC prior to its IPO and private placement.

Remarks:
This Form 4/A amends the Form 4 filed on June 16, 2021 to change the number of derivative securities beneficially owned following the reported transaction took place on June 14, 2021. Such change reflects the 110,000 rights that the reporting person previously acquired in a transaction that took place on May 20, 2021.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Mountain Crest Holdings III LLC 311 WEST 43RD STREET, 12TH FLOOR NEW YORK, NY 10036		X