SL Science Holding CEO buys $2.27M in ordinary shares

The transfer changed the direct holder while Wang’s reported beneficial ownership remained 333,832,129 ordinary shares.

Rhea-AI Filing Summary

SL Science Holding Ltd (SLBT) Chief Executive Officer Ching-Dong Wang purchased 4,545,306 ordinary shares from SL Link Co., Ltd. on September 29, 2026, for an aggregate purchase price of US$2,272,653. The transaction’s reported per-share price is not usable. After the transfer, Wang beneficially owned 333,832,129 ordinary shares, unchanged in total: 329,286,823 were held by SL Link Holding Ltd and 4,545,306 were held directly by Wang. No Rule 10b5-1 plan is reported.

Insider Trade Summary

Net Buyer: 4,545,306 shares

Net Buy 1 txn

Insider Wang Ching-Dong

Role Chief Executive Officer

Bought 4,545,306 shs

Type	Security	Shares	Price	Value
Purchase	Ordinary Shares F2, F1	4,545,306	$2,272,653.00 as filed	--

• Price shown as filed: $2,272,653.00 per share is far above the $1.83 close on Sep 29, 2026, so no transaction value is shown.

Holdings After Transaction: Ordinary Shares — 333,832,129 shares (Indirect, See footnote)

Footnotes (2)

1. F1. Represents 333,832,129 ordinary shares, par value of $0.00001 per share (the "Ordinary Shares"), of SL Science Holding Limited (the "Issuer"), beneficially owned by Ching-Dong Wang, including (i) 329,286,823 Ordinary Shares held by SL Link Holding Ltd., and (ii) 4,545,306 Ordinary Shares directly held by Ching-Dong Wang. SL Link Holding Ltd. is a company incorporated in the Cayman Islands which is owned equally by Mr. Wang and his spouse, and Mr. Wang is the sole director of SL Link Holding Ltd. As a result, Mr. Wang is deemed to have voting and dispositive power over the securities of the Issuer held by SL Link Holding Ltd.
2. F2. On September 29, 2026, SL Link Co., Ltd. sold and transferred 4,545,306 Ordinary Shares to Ching-Dong Wang for an aggregate purchase price of US$2,272,653 (the "Share Transfer"). SL Link Co., Ltd. is a company incorporated in Taiwan. Ching-Dong Wang owns a 50.73% equity interest in SL Link Co., Ltd., and is the Chairman of the Board and Chief Executive Officer of SL Link Co., Ltd. As a result, Ching-Dong Wang is deemed to have voting and dispositive power over the securities of the Issuer held by SL Link Co., Ltd. The aggregate number of Ordinary Shares beneficially owned by Ching-Dong Wang remained 333,832,129 following the Share Transfer.

Key Figures

Ordinary shares purchased: 4,545,306 shares Aggregate purchase price: US$2,272,653 Beneficially owned after transfer: 333,832,129 ordinary shares +2 more

5 metrics

Ordinary shares purchased 4,545,306 shares September 29, 2026

Aggregate purchase price US$2,272,653 Purchase from SL Link Co., Ltd. on September 29, 2026

Beneficially owned after transfer 333,832,129 ordinary shares Following the September 29, 2026 transfer

Shares held by SL Link Holding Ltd 329,286,823 ordinary shares Included in Wang’s beneficial ownership after the transfer

Shares held directly by Ching-Dong Wang 4,545,306 ordinary shares After the September 29, 2026 transfer

Key Terms

Ordinary Shares, beneficially owned, voting and dispositive power

3 terms

Ordinary Shares technical

"4,545,306 Ordinary Shares directly held by Ching-Dong Wang"

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

beneficially owned regulatory

"333,832,129 ordinary shares beneficially owned by Ching-Dong Wang"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

voting and dispositive power regulatory

"deemed to have voting and dispositive power over the securities"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many SLBT shares did Ching-Dong Wang purchase, and what was the price?

Wang purchased 4,545,306 ordinary shares from SL Link Co., Ltd. on September 29, 2026, for an aggregate purchase price of US$2,272,653. The reported per-share price is not usable, and no Rule 10b5-1 plan is reported.

How many SLBT shares did Ching-Dong Wang own after the transfer?

After the transfer, Wang beneficially owned 333,832,129 ordinary shares: 329,286,823 held by SL Link Holding Ltd and 4,545,306 held directly by Wang. His aggregate beneficial ownership remained unchanged following the transfer.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/01/2026 - 04:31 PM Accepted by SEC EDGAR 10/01/2026 - 04:30 PM Learn about SEC filing dates

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

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^*

Wang Ching-Dong

(Last) (First) (Middle)

C/O 11TH FLOOR, NO. 479 CHONGYANG ROAD,

NANGANG DISTRICT

(Street)

TAIPEI 115010

(City) (State) (Zip)

TAIWAN

(Country)

2. Issuer Name and Ticker or Trading Symbol
SL Science Holding Ltd [ SLBT ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/29/2026

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
Ordinary Shares	09/29/2026		P		4,545,306(2)	A	$2,272,653	333,832,129(1)	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

Explanation of Responses:

1. Represents 333,832,129 ordinary shares, par value of $0.00001 per share (the "Ordinary Shares"), of SL Science Holding Limited (the "Issuer"), beneficially owned by Ching-Dong Wang, including (i) 329,286,823 Ordinary Shares held by SL Link Holding Ltd., and (ii) 4,545,306 Ordinary Shares directly held by Ching-Dong Wang. SL Link Holding Ltd. is a company incorporated in the Cayman Islands which is owned equally by Mr. Wang and his spouse, and Mr. Wang is the sole director of SL Link Holding Ltd. As a result, Mr. Wang is deemed to have voting and dispositive power over the securities of the Issuer held by SL Link Holding Ltd.

2. On September 29, 2026, SL Link Co., Ltd. sold and transferred 4,545,306 Ordinary Shares to Ching-Dong Wang for an aggregate purchase price of US$2,272,653 (the "Share Transfer"). SL Link Co., Ltd. is a company incorporated in Taiwan. Ching-Dong Wang owns a 50.73% equity interest in SL Link Co., Ltd., and is the Chairman of the Board and Chief Executive Officer of SL Link Co., Ltd. As a result, Ching-Dong Wang is deemed to have voting and dispositive power over the securities of the Issuer held by SL Link Co., Ltd. The aggregate number of Ordinary Shares beneficially owned by Ching-Dong Wang remained 333,832,129 following the Share Transfer.

	/s/ Ching-Dong Wang	10/01/2026
	** 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)