No insider trades reported as Horizon Space (NASDAQ: HSPT) director files Form 4

Rhea-AI Filing Summary

Horizon Space Acquisition II Corp. director Xu Qian filed a Form 4 reporting no insider trading activity. The filing shows no common stock or derivative transactions, no shares bought or sold, and no option exercises, gifts, tax withholdings, or restructurings during the reported period.

Key Figures

Shares bought: 0 shares Shares sold: 0 shares Net shares bought/sold: 0 shares +2 more

5 metrics

Shares bought 0 shares Form 4 transactionSummary buyShares

Shares sold 0 shares Form 4 transactionSummary sellShares

Net shares bought/sold 0 shares Form 4 transactionSummary netBuySellShares

Option exercises 0 Form 4 transactionSummary exerciseCount

Derivative transactions 0 Form 4 transactionSummary derivativeTransactionCount

Key Terms

Form 4, reporting person, netBuySellShares, derivativeSummary

4 terms

Form 4 regulatory

"Xu Qian filed a Form 4 reporting no insider trading activity."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

reporting person regulatory

"The reporting person is Xu Qian, identified as a director."

netBuySellShares financial

"The transaction summary shows netBuySellShares of 0, indicating no net trading activity."

derivativeSummary financial

"It reports derivativeTransactionCount of 0 with an empty derivativeSummary."

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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
Estimated average burden
hours per response:			0.5

X

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^*

Xu Qian

(Last) (First) (Middle)

C/O HORIZON SPACE ACQUISITION II CORP.

1412 BROADWAY, 21ST FLOOR, SUITE 21V

(Street)

NEW YORK NEW YORK 10018

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Horizon Space Acquisition II Corp. [ HSPT ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/12/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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

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

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

Explanation of Responses:

Remarks:

This "Exit" Form 4 is voluntarily filed to report that, in connection with the consummation of the initial business combination of Horizon Space Acquisition II Corp. ("HSPT") on June 12, 2026 pursuant to the Business Combination Agreement dated May 9, 2025 by and among HSPT, SL Science Holding Limited, a Cayman Islands exempted company limited by shares, SL BIO Ltd., a Cayman Islands exempted company limited by shares, CW Mega Limited, a Cayman Islands exempted company limited by shares, and WW Century Limited, a Cayman Islands exempted company limited by shares, the Reporting Person no longer served as a director of HSPT or held any ordinary shares of HSPT after June 12, 2026, and therefore is no longer subject to Section 16 reporting.

	/s/ Qian Xu	06/16/2026
	** 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 4 (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 4: SEC 1474 (03-26)

FAQ

What does Xu Qian's Form 4 for HSPT report?

The Form 4 for Horizon Space Acquisition II Corp. (HSPT) reports that director Xu Qian had no insider stock or derivative transactions during the period, with zero shares bought, sold, exercised, gifted, or restructured.

Were any HSPT shares bought or sold in this Form 4?

No shares of HSPT were bought or sold. The transaction summary shows 0 buy shares, 0 sell shares, and a netBuySellShares figure of 0, indicating no net trading activity by the reporting person.

Does the Form 4 show any option exercises or derivative trades for HSPT?

The Form 4 shows no derivative activity. It reports an exerciseCount of 0, exerciseShares of 0, and a derivativeTransactionCount of 0, with an empty derivativeSummary, indicating no options or similar instruments were exercised or traded.

Are there any gifts or tax-withholding transactions in this HSPT Form 4?

No. The filing lists giftCount and taxWithholdingCount as 0, with corresponding share counts also 0. This means there were no share gifts and no shares withheld for tax purposes in the reported period.

Who is the reporting person in this HSPT Form 4?

The reporting person is Xu Qian, identified as a director of Horizon Space Acquisition II Corp. The metadata flags is_director: 1 and shows no officer role or ten percent ownership designation.

What is the overall transaction direction in this HSPT Form 4?

The overall direction is neutral. The transactionSummary records zero buys, zero sells, and a netBuySellDirection of "neutral" with netBuySellShares at 0, reflecting no reportable trading activity.