[Form 4] Mountain Crest Acquisition Corp. V Insider Trading Activity

Rhea-AI Filing Summary

Mountain Crest Acquisition Corp. V insider reporting shows that an entity associated with CEO, CFO and director Suying Liu entered into an agreement to sell 200,000 shares of common stock at $5 per share on December 30, 2025.

According to the disclosure, the purchase price has been received, but the shares will only transfer to the buyer after the company completes its initial business combination. After this pending sale, 1,865,800 common shares are reported as indirectly beneficially owned through Mountain Crest Global Holdings LLC, over which Liu holds sole voting and dispositive power.

Insights

Equity ownership and governance analyst

CEO-linked entity agrees to sell 200,000 indirect shares, transfer contingent on deal closing.

The filing records an open-market style sale agreement for 200,000 common shares at $5 per share, tied to an entity associated with Suying Liu, who serves as CEO, CFO, director and 10% owner of Mountain Crest Acquisition Corp. V.

A key detail is that the buyer has paid the purchase price, but the shares will move only after the company’s initial business combination is consummated. This links completion of the transaction directly to the success of that combination, rather than immediate settlement at trade date.

The filing also shows 1,865,800 common shares indirectly beneficially owned after the reported transaction, held via Mountain Crest Global Holdings LLC with Liu retaining sole voting and dispositive power. Future company filings around the business combination will clarify whether and when this contingent share transfer is completed.

Insider Trade Summary

Net Seller: 200,000 shares ($1,000,000)

Net Sell 1 txn

Insider Liu Suying

Role CEO and CFO

Sold 200,000 shs ($1.00M)

Type	Security	Shares	Price	Value
Sale	Common Stock	200,000	$5.00	$1.00M

Holdings After Transaction: Common Stock — 1,865,800 shares (Indirect, See Footnote)

Footnotes (1)

1. The purchase price for the shares has been received, however, the shares will only be transferred to purchaser upon the consummation of the issuer's initial business combination. Shares owned by Mountain Crest Global Holdings LLC, over which Suying Liu owns sole voting and dispositive power.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Liu Suying

(Last) (First) (Middle)

524 BROADWAY 11TH FLOOR

(Street)

NEW YORK NY 10012

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Mountain Crest Acquisition Corp. V [ MCAGU ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	CEO and CFO

3. Date of Earliest Transaction (Month/Day/Year)
12/30/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

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. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/30/2025		S(1)		200,000	D	$5	1,865,800	I	See Footnote(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction 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 (Month/Day/Year)		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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The purchase price for the shares has been received, however, the shares will only be transferred to purchaser upon the consummation of the issuer's initial business combination.

2. Shares owned by Mountain Crest Global Holdings LLC, over which Suying Liu owns sole voting and dispositive power.

	By: /s/ Suying Liu	01/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.