Ostin Technology Group (OST) director submits initial insider holdings

Rhea-AI Filing Summary

Ostin Technology Group Co., Ltd. director Mein John Carl filed an initial statement of beneficial ownership on Form 3. This filing does not report any stock purchases, sales, or derivative positions, and serves as the baseline record of his insider status as a director of OST.

Key Terms

Form 3, reportingPersons, beneficial ownership, 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": "Mein John Carl""

beneficial ownership financial

"initial statement of beneficial ownership on Form 3"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

derivativeSummary financial

""derivativeSummary": []"

Understanding Insider Trading Forms →

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^*

Mein John Carl

(Last) (First) (Middle)

BUILDING 2, 101, 1 KECHUANG ROAD

QIXIA DISTRICT

(Street)

NANJING JIANGSU PROVINCE 210046

(City) (State) (Zip)

CHINA

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
Ostin Technology Group Co., Ltd. [ OST ]

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/ John Carl Mein	04/01/2026
	** 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 OST Form 3 filing by Mein John Carl report?

The OST Form 3 filing by Mein John Carl reports his status as a director and provides an initial statement of beneficial ownership. It shows no stock purchases, sales, or derivative positions, establishing a baseline record of his insider holdings at Ostin Technology Group.

Who is the reporting person in the OST Form 3 filing?

The reporting person in the OST Form 3 filing is Mein John Carl, identified as a director of Ostin Technology Group Co., Ltd. He is not listed as an officer or ten percent owner, and no other roles or relationships are disclosed in the provided data.

Does the OST Form 3 show any insider buying or selling activity?

The OST Form 3 shows no insider buying or selling activity. Transaction counts for buys, sells, acquisitions, dispositions, exercises, gifts, tax withholding, and restructurings are all zero, indicating no reportable transactions at the time of this initial ownership statement.

Are any derivative securities disclosed in the OST Form 3?

No derivative securities are disclosed in the OST Form 3. The derivative summary is empty and derivative transaction counts are zero, meaning there are no reported options, warrants, or other derivative positions associated with Mein John Carl in this filing.

What is the net buy or sell direction in this OST Form 3?

The net buy or sell direction in this OST Form 3 is neutral. Transaction summaries show zero shares bought, sold, or otherwise transacted, and the net buy-sell direction field is explicitly labeled as neutral, confirming the absence of reportable trading activity.