Meridian3 Industrials (MIACU) director Ralf Speth files initial Form 3

Rhea-AI Filing Summary

Meridian3 Industrials Acquisition Corp director Ralf Speth has filed an initial Form 3, which records his status as a director of the company. The provided summary data shows no reportable transactions or derivative positions associated with this filing.

Key Figures

Buy transactions: 0 transactions Sell transactions: 0 transactions Net buy/sell shares: 0 shares +2 more

5 metrics

Buy transactions 0 transactions Form 3 transaction summary

Sell transactions 0 transactions Form 3 transaction summary

Net buy/sell shares 0 shares Form 3 transaction summary

Derivative transactions 0 transactions Form 3 derivative transaction count

Holding entries 0 entries Form 3 holding entries count

Key Terms

Form 3, reportingPersons, transactionSummary, derivativeSummary

4 terms

Form 3 regulatory

"INSIDER FILING DATA (Form 3)"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

reportingPersons regulatory

""reportingPersons": [ { "name": "Speth Ralf""

transactionSummary financial

""transactionSummary": { "buyCount": 0, "sellCount": 0"

derivativeSummary financial

""derivativeSummary": []"

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Understanding Insider Trading Forms →

Available on EDGAR 07/04/2026 - 12:13 PM Accepted by SEC EDGAR 07/01/2026 - 02:09 PM Learn about SEC filing dates

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
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Speth Ralf

(Last) (First) (Middle)

1330 AVENUE OF THE AMERICAS, SUITE 23A

(Street)

NEW YORK CITY 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

Explanation of Responses:

No securities are beneficially owned.

	/s/ Sir Ralf Speth	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)

FAQ

What does the Meridian3 Industrials (MIACU) Form 3 filing show?

The Form 3 identifies Ralf Speth as a director of Meridian3 Industrials Acquisition Corp. The summarized data in this filing excerpt shows no reportable transactions or derivative positions associated with him at the time of this initial ownership report.

Who is the reporting person in Meridian3 Industrials (MIACU) Form 3?

The reporting person is Ralf Speth, listed as a director of Meridian3 Industrials Acquisition Corp. His role is disclosed without any accompanying buy, sell, or derivative transactions in the summarized data provided from this Form 3 filing.

Does the MIACU Form 3 show any insider share purchases or sales?

No insider share purchases or sales appear in the summarized Form 3 data. The transaction summary shows zero buy, sell, acquire, dispose, or derivative transactions, indicating only an initial reporting of status rather than trading activity.

Are there any derivative securities reported for Meridian3 Industrials director Ralf Speth?

No derivative securities are reported in the provided Form 3 excerpt. The derivativeSummary is empty and the transaction summary indicates zero derivative transactions or exercises, suggesting no options or similar instruments are listed here for Ralf Speth.

What is the purpose of this Meridian3 Industrials (MIACU) Form 3?

This Form 3 serves as an initial statement of beneficial ownership for director Ralf Speth. It formally records his status as a director of Meridian3 Industrials Acquisition Corp, with no accompanying transactions or derivative positions shown in the summarized data.