Meridian3 (NASDAQ: MIACU) director reports 25,000 Class B shares convertible to Class A

Rhea-AI Filing Summary

Meridian3 Industrials Acquisition Corp director Nakashima Hideyuki reported an initial holding of 25,000 Class B ordinary shares on a Form 3. These Class B shares will automatically convert into 25,000 Class A ordinary shares upon the company’s initial business combination, or earlier at the holder’s option, on a one-for-one basis, subject to possible adjustments described in the registration statement. The footnote also clarifies that these Class B shares have no expiration date, meaning this conversion right remains outstanding until exercised or until a business combination occurs.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Nakashima Hideyuki

Role Director

Type	Security	Shares	Price	Value
holding	Class B Ordinary Shares	--	--	--

Holdings After Transaction: Class B Ordinary Shares — 25,000 shares (Direct)

Footnotes (1)

1. [object Object]

Key Figures

Class B shares held: 25,000 shares Underlying Class A shares: 25,000 shares Exercise / conversion price: $0.0000 per share

3 metrics

Class B shares held 25,000 shares Initial beneficial ownership reported by director

Underlying Class A shares 25,000 shares Class A shares underlying Class B on one-for-one basis

Exercise / conversion price $0.0000 per share Conversion price for Class B into Class A shares

Key Terms

Class B Ordinary Shares, Class A Ordinary Shares, initial business combination, registration statement

4 terms

Class B Ordinary Shares financial

"The Class B ordinary shares reported herein will automatically convert into Class A ordinary shares"

Class B ordinary shares are a type of ownership stake in a company that typically come with different voting rights or privileges compared to other share classes. For investors, they represent a way to hold part of the company’s value and influence its decisions, often with fewer voting rights than Class A shares. Understanding these shares helps investors assess their level of control and potential returns within a company.

Class A Ordinary Shares financial

"will automatically convert into Class A ordinary shares at the time of the Meridian3 Industrials Acquisition Corp's initial business combination"

Class A ordinary shares are a type of ownership stake in a company that typically grants voting rights to shareholders, allowing them to have a say in important company decisions. They often come with priority in receiving dividends or profits, making them attractive to investors seeking influence and potential income. These shares help distinguish different levels of ownership and rights within a company's stock structure.

initial business combination financial

"will automatically convert into Class A ordinary shares at the time of the Meridian3 Industrials Acquisition Corp's initial business combination"

An initial business combination is the deal in which a special-purpose acquisition company (SPAC) merges with or acquires an operating business to bring that business onto public markets. Think of the SPAC as an empty shell that raises money from investors, then uses that cash to buy a private company—this transaction turns the private company into a public one and often changes its ownership, valuation, and access to capital, so investors should watch for shifts in risk, future growth prospects, and shareholder rights.

registration statement regulatory

"on a one-for-one basis, subject to adjustment as described in the Issuer's registration statement"

A registration statement is a formal document that companies file with a government agency to offer new shares of stock to the public. It provides essential information about the company's finances, operations, and risks, helping investors make informed decisions. Think of it as a detailed product description that ensures transparency and trust before buying into a company.

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Available on EDGAR 07/04/2026 - 12:13 PM Accepted by SEC EDGAR 07/01/2026 - 02:01 PM Learn about SEC filing dates

FAQ

What does the MIACU Form 3 filing report for Nakashima Hideyuki?

The Form 3 shows that director Nakashima Hideyuki holds 25,000 Class B ordinary shares of Meridian3 Industrials Acquisition Corp. These holdings represent his initial reported beneficial ownership position as a director of the special purpose acquisition company.

How do Meridian3 Industrials Acquisition Corp Class B shares convert into Class A shares?

The filing states that each Class B ordinary share will automatically convert into one Class A ordinary share at the time of the company’s initial business combination, or earlier at the option of the holder, subject to adjustment described in the registration statement.

Does Meridian3 director Nakashima Hideyuki’s Class B stake have an expiration date?

According to the footnote, the Class B ordinary shares have no expiration date. This means the conversion right into Class A shares remains in place indefinitely, lasting through the company’s initial business combination or until the holder elects earlier conversion.

What underlying security is associated with the Class B shares in the MIACU Form 3?

The Form 3 identifies the underlying security as Class A ordinary shares. The Class B ordinary shares are structured to convert into Class A on a one-for-one basis, linking the director’s current holdings to future Class A equity after a business combination.

How many underlying Class A shares are tied to Nakashima Hideyuki’s Class B holdings?

The derivative summary indicates 25,000 underlying Class A ordinary shares associated with the Class B shares. This matches the 25,000 Class B ordinary shares held, reflecting a straightforward one-for-one conversion ratio outlined in the filing.

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
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hours per response:			0.5

1. Name and Address of Reporting Person^*

Nakashima Hideyuki

(Last) (First) (Middle)

1330 AVENUE OF THE AMERICAS, SUITE 23A

(Street)

NEW YORK NEW YORK 10019

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
07/01/2026

3. Issuer Name and Ticker or Trading Symbol
Meridian3 Industrials Acquisition Corp [ MIAC ]

3a. Foreign Trading Symbol

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

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

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

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Class B Ordinary Shares(1)	(1)	(1)	Class A Ordinary Shares(1)	25,000	$0.00	D

Explanation of Responses:

1. The Class B ordinary shares reported herein will automatically convert into Class A ordinary shares at the time of the Meridian3 Industrials Acquisition Corp's ("Issuer") initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to adjustment as described in the Issuer's registration statement. The Class B ordinary shares have no expiration date.

	/s/ Hideyuki Nakashima	07/01/2026
	** 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 5 (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.
* Form 3: SEC 1473 (03-26)