J-Star director reports 240,000-share ownership

Q: What does J-Star Holding (YMAT) director Sung Ting-Pang report on this Form 3?

The Form 3 shows that director Sung Ting-Pang holds 240,000 Class A Ordinary Shares of J-Star Holding Co., Ltd. This is an initial statement of beneficial ownership, establishing Sung’s reported position in the company’s shares.

Q: How many J-Star Holding (YMAT) shares does Sung Ting-Pang beneficially own?

The filing reports that 240,000 Class A Ordinary Shares are beneficially owned following the reported event. These shares are shown as directly owned, giving investors a clear view of Sung Ting-Pang’s disclosed equity stake in J-Star Holding Co., Ltd.

Q: Is the J-Star Holding (YMAT) Form 3 a new trade or an ownership report?

This Form 3 is an initial ownership report, not a record of a new trade. It lists 240,000 Class A Ordinary Shares held after the reported event, providing baseline information on the director’s existing stake in the company.

Q: Does the J-Star Holding (YMAT) Form 3 show direct or indirect ownership?

The Form 3 identifies the 240,000 Class A Ordinary Shares as directly owned by Sung Ting-Pang. Direct ownership means the reporting person is listed as holding the shares personally, rather than through an intermediary entity such as a trust or partnership.

Q: Does the J-Star Holding (YMAT) Form 3 indicate any buying or selling activity?

The Form 3 characterizes the entry as a holding, with no buy or sell codes reported. It serves to disclose that 240,000 Class A Ordinary Shares are owned after the reported event, rather than documenting a specific purchase or sale transaction.

J-Star Holding Co., Ltd. director Sung Ting-Pang filed an initial ownership report showing holdings of Class A Ordinary Shares.

Filing Impact

(Moderate)

Filing Sentiment

(Neutral)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

How Sentiment works How the balance works

Form Type

Rhea-AI Filing Summary

J-Star Holding Co., Ltd. director Sung Ting-Pang filed an initial ownership report showing holdings of Class A Ordinary Shares. The filing reports that Sung directly owns 240,000 Class A Ordinary Shares after the reported event. This Form 3 records existing ownership rather than a new purchase or sale.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider SUNG TING-PANG

Role Director

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

Holdings After Transaction: Class A Ordinary Shares — 240,000 shares (Direct)

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does J-Star Holding (YMAT) director Sung Ting-Pang report on this Form 3?

The Form 3 shows that director Sung Ting-Pang holds 240,000 Class A Ordinary Shares of J-Star Holding Co., Ltd. This is an initial statement of beneficial ownership, establishing Sung’s reported position in the company’s shares.

How many J-Star Holding (YMAT) shares does Sung Ting-Pang beneficially own?

The filing reports that 240,000 Class A Ordinary Shares are beneficially owned following the reported event. These shares are shown as directly owned, giving investors a clear view of Sung Ting-Pang’s disclosed equity stake in J-Star Holding Co., Ltd.

Is the J-Star Holding (YMAT) Form 3 a new trade or an ownership report?

This Form 3 is an initial ownership report, not a record of a new trade. It lists 240,000 Class A Ordinary Shares held after the reported event, providing baseline information on the director’s existing stake in the company.

Does the J-Star Holding (YMAT) Form 3 show direct or indirect ownership?

The Form 3 identifies the 240,000 Class A Ordinary Shares as directly owned by Sung Ting-Pang. Direct ownership means the reporting person is listed as holding the shares personally, rather than through an intermediary entity such as a trust or partnership.

Does the J-Star Holding (YMAT) Form 3 indicate any buying or selling activity?

The Form 3 characterizes the entry as a holding, with no buy or sell codes reported. It serves to disclose that 240,000 Class A Ordinary Shares are owned after the reported event, rather than documenting a specific purchase or sale transaction.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/18/2026 - 09:01 AM EDT

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^*

SUNG TING-PANG

(Last)

(First)

(Middle)

7/F-1, NO. 633, SEC. 2, TAIWAN BLVD.,

XITUN DISTRICT,

(Street)

TAICHUNG CITY

407

(City)

(State)

(Zip)

TAIWAN, PROVINCE OF CHINA

(Country)

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

3. Issuer Name and Ticker or Trading Symbol
J-Star Holding Co., Ltd. [ YMAT ]

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)
Class A Ordinary Shares	240,000	D

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)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	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)

Explanation of Responses:

	/s/ Sung Ting Pang	03/18/2026
	** 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)

Source: View Original Filing on SEC EDGAR