Yu-Chiao Su - 13 Mar 2026 Form 3 Insider Report for CHIPMOS TECHNOLOGIES INC (IMOS)

Signature
/s/ Hsiu-Ling Teng, attorney-in-fact
Issuer symbol
IMOS
Transactions as of
13 Mar 2026
Net transactions value
$0
Form type
3
Filing time
13 Mar 2026, 06:05:25 UTC

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Su Yu-Chiao Vice President, Director C/O NO 1 R&D ROAD 1, HSINCHU SCIENCE PARK, HSINCHU, TAIWAN /s/ Hsiu-Ling Teng, attorney-in-fact 13 Mar 2026 0002114602

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding IMOS Common Stock 346,101 13 Mar 2026 Direct
holding IMOS Common Stock 830,000 13 Mar 2026 Tsai Fu Investment Co., Ltd. F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Yu-Chiao Su serves as the representative and director of Tsai Fu Investment Co., Ltd.

Remarks:

Exhibit List: Exhibit 24 - Power of Attorney