Director Chang Pao-Hsin reports initial insider status at ChipMOS (NASDAQ: IMOS)

Rhea-AI Filing Summary

CHIPMOS TECHNOLOGIES INC director files initial ownership report. Chang Pao-Hsin submitted a Form 3 as a director of ChipMOS Technologies Inc. This filing establishes his status as an insider under U.S. securities rules. The report does not list any transactions or specific share holdings in this excerpt.

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^*

Chang Pao-Hsin

(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 ChipMOS (IMOS) Form 3 filed by Chang Pao-Hsin show?

The Form 3 shows that Chang Pao-Hsin is a director of ChipMOS Technologies Inc. It serves as his initial statement of beneficial ownership as an insider. In this excerpt, no transactions or specific holdings are reported.

Does the IMOS Form 3 for Chang Pao-Hsin report any share transactions?

No, this Form 3 excerpt shows no share transactions by Chang Pao-Hsin. The transaction summary lists zero buys, sells, exercises, gifts, or other movements, indicating the filing is purely an initial ownership report without activity details.

What insider role does Chang Pao-Hsin hold at ChipMOS Technologies (IMOS)?

According to the filing, Chang Pao-Hsin is a director of ChipMOS Technologies Inc. He is not identified as an officer or a ten percent owner in this report, which strictly classifies his insider status as a board member.

Are any derivative securities reported in the ChipMOS (IMOS) Form 3 for Chang Pao-Hsin?

The Form 3 excerpt shows no derivative securities reported for Chang Pao-Hsin. The derivative summary is empty, and the transaction summary indicates zero derivative transactions, suggesting no options or similar instruments are disclosed here.

Do the footnotes in the IMOS Form 3 change how Chang Pao-Hsin’s holdings are viewed?

The provided data includes a null footnote entry, so there is no additional explanation about voting power, investment authority, or indirect ownership. Based on this excerpt alone, there are no special ownership disclaimers or entity attributions disclosed.