SEC FORM 3

SEC FORM 3 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^*

Rosenstadt William S

(Last)

(First)

(Middle)

C/O BLUEPORT ACQUISITION LTD

366 MADISON AVENUE, 3RD FLOOR

(Street)

NEW YORK

10017

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
11/10/2025

3. Issuer Name and Ticker or Trading Symbol
Blueport Acquisition Ltd [ BPAC ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	CEO and Chairman

5. If Amendment, Date of Original Filed (Month/Day/Year)

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)
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)
Class B Ordinary Shares	⁽²⁾	⁽²⁾	Class A Ordinary Shares	1,437,500	⁽²⁾	I	See Footnote⁽¹⁾

Explanation of Responses:

1. Represents Class B ordinary shares held of record by Blueport Acquisition Corporation (the "sponsor"). The sponsor is managed by its two principals, William Rosenstadt and Roy Jiang, and is legally and beneficially owned (i) 50% by William Rosenstadt and (ii) 50% by Roy Jiang. By virtue of his shared control of the sponsor, William Rosenstadt may be deemed to have beneficial ownership of the ordinary shares held directly by the sponsor. The address for the sponsor is 366 Madison Avenue, 3rd Floor New York, NY 10017. Mr. Rosenstadt disclaims any beneficial ownership of the reported shares other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

2. The Class B ordinary shares will automatically convert into Class A ordinary shares concurrently with or immediately following the consummation of the Issuer's initial business combination, or earlier at the option of the holders thereof on a one-for-one basis, subject to the adjustments. The Class B ordinary shares expire on the earlier (1) 180 days after the completion of the issuer's initial business combination; or (2) the date following the consummation of the issuer's initial business combination that results in the holder having the right to exchange their shares for cash, securities or other property

	/s/ William Rosenstadt	12/08/2025
	** 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.

SEC Form 3 filed by new insider Rosenstadt William S