Silicon Motion (SIMO) director discloses 7,500 ADS stake in Form 3

Rhea-AI Filing Summary

Silicon Motion Technology Corp director Chung Tsung-Ming has filed an initial ownership report showing he holds 7,500 American depositary shares (ADS) directly. Each ADS represents four ordinary shares of Silicon Motion Technology Corp. This Form 3 does not reflect any recent buy or sell transaction, only existing holdings.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Chung Tsung-Ming

Role Director

Type	Security	Shares	Price	Value
holding	American depositary shares	--	--	--

Holdings After Transaction: American depositary shares — 7,500 shares (Direct)

Footnotes (1)

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Understanding Insider Trading Forms →

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^*

Chung Tsung-Ming

(Last) (First) (Middle)

C/O SILICON MOTION TECHNOLOGY CORP.

FLAT C, 19/F, WING CHEONG COMMERCIAL BLD

(Street)

HONG KONG ISLAND 00000

(City) (State) (Zip)

TAIWAN, PROVINCE OF CHINA

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
Silicon Motion Technology CORP [ SIMO ]

3a. Foreign Trading Symbol

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

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

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

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)
American depositary shares(1)	7,500	D

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)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Each American depositary share represents four ordinary shares, US$0.01 par value per share, of Silicon Motion Technology Corp.

	/s/ Tsung-Ming Chung	03/27/2026
	** 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 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.
* Form 3: SEC 1473 (03-26)

FAQ

What does Silicon Motion (SIMO) director Chung Tsung-Ming report on this Form 3?

He reports initial ownership of 7,500 American depositary shares of Silicon Motion Technology Corp, held directly. This filing lists his existing stake rather than recording a new purchase or sale of shares.

How many Silicon Motion (SIMO) ordinary shares does each ADS on this Form 3 represent?

Each American depositary share represents four ordinary shares of Silicon Motion Technology Corp. This ratio is disclosed in the footnote, linking the ADS reported on the Form 3 to the underlying ordinary share structure.

Is there a buy or sell transaction reported for Silicon Motion (SIMO) on this Form 3?

No, the Form 3 functions as an initial ownership report and shows holdings only. The transaction fields indicate a holding entry with unknown direction, meaning no specific purchase or sale is being disclosed here.

What type of security does Chung Tsung-Ming hold in Silicon Motion (SIMO)?

He holds American depositary shares of Silicon Motion Technology Corp. These ADS are U.S.-traded instruments, and each one corresponds to four underlying ordinary shares of the company, according to the disclosed footnote.

Is Chung Tsung-Ming a major shareholder of Silicon Motion (SIMO) based on this Form 3?

The Form 3 indicates he is a director, not a ten percent owner. It reports that he directly holds 7,500 ADS, but does not state that he owns ten percent or more of Silicon Motion’s outstanding shares.