[SCHEDULE 13G] Cullinan Therapeutics, Inc. Passive Investment Disclosure (>5%)

Rhea-AI Filing Summary

Cullinan Therapeutics ownership disclosure by Kynam Capital group. The filing reports that Kynam Capital Management, LP, Kynam Capital Management GP, LLC, and Yue Tang beneficially own 3,114,132 shares of Cullinan Therapeutics common stock, equal to 5.27% of the class as of 12/31/2025.

The disclosure lists shared voting and dispositive power of 3,114,132 shares and zero sole voting or dispositive power. The report includes the issuer CUSIP 230031106 and the filer address in Princeton, New Jersey.

Insights

Equity Ownership Analyst

Beneficial ownership position and voting/dispositive structure are disclosed precisely.

The excerpt shows a 3,114,132 share holding representing 5.27% of common stock as of 12/31/2025. The three filing parties report shared voting and dispositive power and report zero sole voting or dispositive power.

Timing and size are explicit; subsequent filings would show changes. Cash‑flow treatment and any planned transactions are not stated in the provided excerpt.

Corporate Governance Specialist

Filing clarifies control attribution across fund, GP and individual filer.

The filing attributes the same 3,114,132 shares to Kynam Capital Management, GP, and Yue Tang, indicating shared authority rather than individual sole control. The CUSIP 230031106 and issuer address are provided for identification.

Ownership percentages and power breakdowns are binding disclosures for regulatory tracking; no change-in-control or transaction intent is stated in the excerpt.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Cullinan Therapeutics, Inc.

(Name of Issuer)

Common Stock, par value $0.0001 per share

(Title of Class of Securities)

12/31/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP Number(s):

1

Names of Reporting Persons

Kynam Capital Management, LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 3,114,132.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,114,132.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,114,132.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.27 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP Number(s):

1

Names of Reporting Persons

Kynam Capital Management GP, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 3,114,132.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,114,132.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,114,132.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.27 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s):

1

Names of Reporting Persons

Yue Tang

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 3,114,132.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,114,132.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,114,132.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.27 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Cullinan Therapeutics, Inc.
(b)	Address of issuer's principal executive offices: ONE MAIN STREET, SUITE 1350, CAMBRIDGE, MASSACHUSETTS 02142
Item 2.
(a)	Name of person filing: Kynam Capital Management, LP Kynam Capital Management GP, LLC Yue Tang
(b)	Address or principal business office or, if none, residence: 221 ELM ROAD PRINCETON, New Jersey 08540
(c)	Citizenship: Kynam Capital Management, LP - DELAWARE Kynam Capital Management GP, LLC - DELAWARE Yue Tang - UNITED STATES
(d)	Title of class of securities: Common Stock, par value $0.0001 per share
(e)	CUSIP No.: 230031106
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 3,114,132
(b)	Percent of class: 5.27 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Kynam Capital Management, LP - 0 Kynam Capital Management GP, LLC - 0 Yue Tang - 0
	(ii) Shared power to vote or to direct the vote: Kynam Capital Management, LP - 3,114,132 Kynam Capital Management GP, LLC - 3,114,132 Yue Tang - 3,114,132
	(iii) Sole power to dispose or to direct the disposition of: Kynam Capital Management, LP - 0 Kynam Capital Management GP, LLC - 0 Yue Tang - 0
	(iv) Shared power to dispose or to direct the disposition of: Kynam Capital Management, LP - 3,114,132 Kynam Capital Management GP, LLC - 3,114,132 Yue Tang - 3,114,132
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Kynam Capital Management, LP

Signature:	Yue Tang
Name/Title:	Managing Member
Date:	03/04/2026

Kynam Capital Management GP, LLC

Signature:	Yue Tang
Name/Title:	Managing Member
Date:	03/04/2026

Yue Tang

Signature:	Yue Tang
Name/Title:	Self
Date:	03/04/2026