Silicon Motion (SIMO) VP Cheng Tao discloses ownership of 6,000 ADS in Form 3

Rhea-AI Filing Summary

Silicon Motion Technology Corp executive Cheng Tao, VP of Manufacturing Operations, filed an initial statement of beneficial ownership. The filing reports direct ownership of 6,000 American depositary shares, each ADS representing four ordinary shares of Silicon Motion Technology Corp.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider CHENG TAO

Role VP of Manufacturing Operations

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

Holdings After Transaction: American depositary shares — 6,000 shares (Direct)

Footnotes (1)

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Key Figures

ADS held: 6,000 American depositary shares ADS to ordinary share ratio: 1 ADS = 4 ordinary shares Par value of ordinary shares: US$0.01 per ordinary share

3 metrics

ADS held 6,000 American depositary shares Direct beneficial ownership reported on Form 3

ADS to ordinary share ratio 1 ADS = 4 ordinary shares Ratio disclosed in Form 3 footnote

Par value of ordinary shares US$0.01 per ordinary share Underlying Silicon Motion ordinary shares

Key Terms

American depositary shares, beneficial ownership, Form 3

3 terms

American depositary shares financial

"Each American Depositary Share, represents four ordinary shares"

American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.

beneficial ownership financial

"filed an initial statement of beneficial ownership"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Form 3 regulatory

"filed an initial statement of beneficial ownership on Form 3"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

CHENG TAO

(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

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP of Manufacturing Operations

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)	6,000	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/ Tao Cheng	04/08/2026
	** 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 the Silicon Motion Technology (SIMO) Form 3 filing for Cheng Tao show?

The Form 3 shows that VP of Manufacturing Operations Cheng Tao directly holds 6,000 American depositary shares of Silicon Motion Technology Corp. It is an initial disclosure of insider ownership, not a report of recent insider buying or selling activity.

How many Silicon Motion Technology (SIMO) ADS does Cheng Tao own?

The filing reports that Cheng Tao directly owns 6,000 American depositary shares of Silicon Motion Technology Corp. This figure represents his reported beneficial ownership as of the Form 3 date and does not, by itself, indicate any recent transaction in the shares.

What is the share ratio for Silicon Motion Technology (SIMO) American depositary shares?

Each Silicon Motion Technology American depositary share represents four ordinary shares, with a par value of US$0.01 per ordinary share. This ratio is disclosed in the Form 3 footnote and explains how ADS relate to the company’s underlying ordinary shares.

Does the Silicon Motion Technology (SIMO) Form 3 indicate insider buying or selling by Cheng Tao?

No specific buying or selling is indicated. The Form 3 records beneficial ownership of 6,000 American depositary shares as a holding entry. It serves as an initial ownership statement rather than a report of new purchase or sale transactions.

What role does Cheng Tao hold at Silicon Motion Technology (SIMO) according to the Form 3?

According to the Form 3, Cheng Tao is an officer of Silicon Motion Technology Corp, serving as VP of Manufacturing Operations. This role qualifies him as a reporting person required to disclose his beneficial ownership of the company’s American depositary shares.