New CHIPMOS (NASDAQ: IMOS) director Wang Yeong-Her files Form 3

Rhea-AI Filing Summary

CHIPMOS TECHNOLOGIES INC director Wang Yeong-Her filed an initial ownership report on Form 3. This filing identifies Wang as a director of the company and establishes a baseline disclosure of his equity position under insider reporting rules. The filing does not list any buy, sell, or other reportable transactions.

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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^*

Wang Yeong-Her

(Last) (First) (Middle)

C/O NO 1 R&D ROAD 1

HSINCHU SCIENCE PARK

(Street)

HSINCHU F5 300092

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/13/2026

3. Issuer Name and Ticker or Trading Symbol
CHIPMOS TECHNOLOGIES INC [ IMOS ]

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

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

5. 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 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)

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:

Remarks:

Exhibit List: Exhibit 24 - Power of Attorney

No securities are beneficially owned.

	/s/ Hsiu-Ling Teng, attorney-in-fact	03/13/2026
	** 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.
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FAQ

What does the IMOS Form 3 filing by Wang Yeong-Her mean?

The Form 3 filing shows that Wang Yeong-Her is a director of CHIPMOS TECHNOLOGIES INC. It is an initial insider ownership report required by regulators and does not itself indicate any recent share purchases or sales.

Did Wang Yeong-Her buy or sell IMOS shares in this Form 3?

No, this Form 3 does not report any buy or sell transactions. It serves only as an initial statement of beneficial ownership for Wang Yeong-Her in his role as a director of CHIPMOS TECHNOLOGIES INC.

Why is CHIPMOS TECHNOLOGIES INC required to file a Form 3 for IMOS?

Form 3 is required when someone becomes an insider, such as a director, of a public company. This IMOS filing registers Wang Yeong-Her’s status as a reporting insider under securities regulations, even though no transactions are disclosed.

Does the IMOS Form 3 provide details on Wang Yeong-Her’s share holdings?

This Form 3 establishes Wang Yeong-Her as a reporting insider but the provided summary does not include specific share counts. It primarily fulfills the requirement to identify him as a director subject to ongoing ownership reporting.

Is the IMOS Form 3 filing a bullish or bearish signal for investors?

The Form 3 is generally a neutral administrative filing. It confirms Wang Yeong-Her’s status as a director of CHIPMOS TECHNOLOGIES INC and does not include any reported purchases, sales, or other transactions that might signal a change in sentiment.