Blueport Acquisition (BPACU) insider reports 197,250 unit purchase

Rhea-AI Filing Summary

Blueport Acquisition Ltd CEO, chairman and director William Rosenstadt, a 10% owner, reported an indirect purchase on 11/13/2025 of 197,250 private units linked to Class A ordinary shares through the issuer's sponsor.

Each private unit was bought at $10.00, for a total of $1,972,500, and consists of one Class A ordinary share plus one right to receive one-sixth of a Class A share after the issuer's initial business combination. Following the transaction, he beneficially owned 1,634,750 Class A ordinary shares and 197,250 rights indirectly via the sponsor, although he disclaims beneficial ownership beyond his pecuniary interest. The rights convert automatically upon the initial business combination and expire worthless if no combination occurs within the required period.

Insider Trade Summary

2 transactions reported

Net Buy 2 txns

Insider Rosenstadt William S

Role CEO and Chairman

Bought 394,500 shs ($0.00)

Type	Security	Shares	Price	Value
Purchase	Right to receive one-sixth of one Class A Ordinary Share	197,250	$0.00	--
Purchase	Class A Ordinary Share, par value $0.0001 per share	197,250	$0.00	--

Holdings After Transaction: Right to receive one-sixth of one Class A Ordinary Share — 197,250 shares (Indirect, See Footnote); Class A Ordinary Share, par value $0.0001 per share — 1,634,750 shares (Indirect, See Footnote)

Footnotes (1)

1. Reflects the 197,250 private units owned by Blueport Acquisition Corporation, the Issuer's sponsor (the "sponsor"). Each private unit consists of one Class A ordinary share, and one right to receive one-sixth (1/6th) of one Class A ordinary share upon the consummation of the Issuer's initial business combination. The private units were purchased at $10.00 per unit for an aggregate purchase price of $ 1,972,500. 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 their shared control of our sponsor, William Rosenstadt and Roy Jiang may be deemed to have beneficial ownership of the shares held directly by our sponsor. The address for the sponsor is 366 Madison Avenue, 3rd Floor New York, NY 10017. Mr. Rosenstadt disclaims any beneficial ownership of the shares held by the sponsor, except to the extent of his pecuniary interest therein. The rights convert automatically into Class A ordinary shares concurrently with or immediately following the consummation of the Issuer's initial business combination. If the business combination has not been consummated within the applicable time period specified in the Issuer's Amended and Restated Memorandum and Articles of Association, the rights shall expire and shall be worthless.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
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hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

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 NY 10017

(City) (State) (Zip)

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

5. 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

3. Date of Earliest Transaction (Month/Day/Year)
11/13/2025

4. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Ordinary Share, par value $0.0001 per share	11/13/2025		P		197,250	A	(1)	1,634,750	I	See Footnote(1)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Right to receive one-sixth of one Class A Ordinary Share	(2)	11/13/2025	(2)	P		197,250		(2)	(2)	Class A Ordinary Share, par value $0.0001 per share	32,875	(2)	197,250	I	See Footnote(1)

Explanation of Responses:

1. Reflects the 197,250 private units owned by Blueport Acquisition Corporation, the Issuer's sponsor (the "sponsor"). Each private unit consists of one Class A ordinary share, and one right to receive one-sixth (1/6th) of one Class A ordinary share upon the consummation of the Issuer's initial business combination. The private units were purchased at $10.00 per unit for an aggregate purchase price of $ 1,972,500. 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 their shared control of our sponsor, William Rosenstadt and Roy Jiang may be deemed to have beneficial ownership of the shares held directly by our sponsor. The address for the sponsor is 366 Madison Avenue, 3rd Floor New York, NY 10017. Mr. Rosenstadt disclaims any beneficial ownership of the shares held by the sponsor, except to the extent of his pecuniary interest therein.

2. The rights convert automatically into Class A ordinary shares concurrently with or immediately following the consummation of the Issuer's initial business combination. If the business combination has not been consummated within the applicable time period specified in the Issuer's Amended and Restated Memorandum and Articles of Association, the rights shall expire and shall be worthless.

	/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.
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FAQ

What insider transaction did William Rosenstadt report for BPACU?

William Rosenstadt, CEO, chairman, director and 10% owner of Blueport Acquisition Ltd, reported an indirect purchase on 11/13/2025 of 197,250 private units through the issuer's sponsor.

How many Blueport Acquisition private units were purchased and at what price?

The filing shows a purchase of 197,250 private units at $10.00 per unit, for an aggregate purchase price of $1,972,500.

What does each Blueport Acquisition private unit reported in the Form 4 consist of?

Each private unit consists of one Class A ordinary share and one right to receive one-sixth (1/6) of one Class A ordinary share upon consummation of the issuer's initial business combination.

When do the Blueport Acquisition rights convert into Class A ordinary shares?

According to the disclosure, the rights convert automatically into Class A ordinary shares concurrently with or immediately following the consummation of the issuer's initial business combination.

What happens if Blueport Acquisition does not complete its initial business combination?

If the initial business combination is not consummated within the applicable time period specified in the issuer's Amended and Restated Memorandum and Articles of Association, the rights shall expire and be worthless.

How many Blueport Acquisition Class A shares does William Rosenstadt beneficially own after this transaction?

Following the reported transaction, William Rosenstadt is shown as beneficially owning 1,634,750 Class A ordinary shares and 197,250 rights indirectly through the sponsor, Blueport Acquisition Corporation, which he and Roy Jiang each own 50%, while he disclaims beneficial ownership beyond his pecuniary interest.