Coincheck Group (CNCK) director discloses ordinary shares and 26,490 RSUs

Rhea-AI Filing Summary

Coincheck Group N.V. director Tan Sin Yin has reported initial ownership in a Form 3 filing. The filing shows direct holdings of 17,516 ordinary shares and restricted share units linked to 26,490 underlying ordinary shares. Each restricted share unit represents a contingent right to receive one ordinary share, cash equal to its value, or a combination. These restricted share units will vest in full on the date of the 2026 annual general meeting of shareholders.

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

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1. Name and Address of Reporting Person^*

Tan Sin Yin

(Last) (First) (Middle)

NIEUWEZIJDS VOORBURGWAL

162, 1012 SJ

(Street)

AMSTERDAM 138522

(City) (State) (Zip)

NETHERLANDS

(Country)

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

3. Issuer Name and Ticker or Trading Symbol
Coincheck Group N.V. [ CNCK ]

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)
Ordinary Shares	17,516	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)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Share Units	(1)	(1)	Ordinary Shares	26,490	(1)	D

Explanation of Responses:

1. Each restricted share unit represents a contingent right to receive one ordinary share of the Issuer, an equivalent amount of cash, or a combination thereof. Such restricted share units will vest in full on the date of the 2026 annual general meeting of shareholders.

Remarks:

Exhibit List: Exhibit 24 - Power of Attorney.

	/s/ Marc Stone, as Attorney-in-Fact	03/24/2026
	** 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 Coincheck Group (CNCK) director Tan Sin Yin report in this Form 3?

Tan Sin Yin reports initial ownership of 17,516 ordinary shares and restricted share units tied to 26,490 underlying ordinary shares. The Form 3 establishes baseline holdings as a director of Coincheck Group N.V. for future comparison with any later insider transactions.

How many restricted share units does Tan Sin Yin hold in Coincheck Group (CNCK)?

Tan Sin Yin holds restricted share units corresponding to 26,490 underlying ordinary shares. Each unit represents a contingent right to receive one ordinary share, an equivalent cash amount, or a mix of both, according to the terms described in the filing’s footnote.

When will Tan Sin Yin’s Coincheck Group (CNCK) restricted share units vest?

The restricted share units will vest in full on the date of Coincheck Group N.V.’s 2026 annual general meeting of shareholders. Vesting means the director’s contingent right to receive ordinary shares or cash becomes fully earned under the award terms.

What types of securities does Tan Sin Yin hold in Coincheck Group (CNCK)?

Tan Sin Yin directly holds ordinary shares and restricted share units. The ordinary shares represent straightforward equity ownership, while the restricted share units are derivative awards that can settle in ordinary shares, cash equal to their value, or a combination, once they vest.

Does this Coincheck Group (CNCK) Form 3 show any insider buying or selling?

The Form 3 does not show insider buying or selling activity. It records existing holdings of ordinary shares and restricted share units, serving as an initial ownership statement rather than a report of open-market or other transactional changes in position.