Teng-Yueh Tsai - 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, 06:06:26 UTC

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Tsai Teng-Yueh Executive Vice President C/O NO 1 R&D ROAD 1, HSINCHU SCIENCE PARK, HSINCHU, TAIWAN /s/ Hsiu-Ling Teng, attorney-in-fact 13 Mar 2026 0002114129

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding IMOS Common Stock 272,572 13 Mar 2026 Direct
holding IMOS Common Stock 820,000 13 Mar 2026 Yung Hsiang Investment Co., Ltd. F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Teng-Yueh Tsai serves as the representative and director of Yung Hsiang Investment Co., Ltd.

Remarks:

Exhibit List: Exhibit 24 - Power of Attorney