    <SEC-DOCUMENT>0000950170-25-026047-index.html : 20250225
    <SEC-HEADER>0000950170-25-026047.hdr.sgml : 20250225
    <ACCEPTANCE-DATETIME>20250225061009
    ACCESSION NUMBER:		0000950170-25-026047
    CONFORMED SUBMISSION TYPE:	6-K
    PUBLIC DOCUMENT COUNT:		25
    CONFORMED PERIOD OF REPORT:	20250225
    FILED AS OF DATE:		20250225
    DATE AS OF CHANGE:		20250225

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CHIPMOS TECHNOLOGIES INC
    		CENTRAL INDEX KEY:			0001123134
    		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
    		ORGANIZATION NAME:           	04 Manufacturing
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			F5
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		6-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-37928
    		FILM NUMBER:		25659149

    	BUSINESS ADDRESS:
    		STREET 1:		NO. 1, R & D ROAD 1
    		STREET 2:		HSINCHU SCIENCE PARK, HSINCHU
    		CITY:			TAIWAN
    		STATE:			F5
    		ZIP:			00000
    		BUSINESS PHONE:		866-3-5770055

    	MAIL ADDRESS:
    		STREET 1:		NO. 1, R & D ROAD 1
    		STREET 2:		HSINCHU SCIENCE PARK, HSINCHU
    		CITY:			TAIWAN
    		STATE:			F5
    		ZIP:			00000
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>6-K
    <SEQUENCE>1
    <FILENAME>imos-6-k-2024q4_quarter_.htm
    <DESCRIPTION>6-K
    <TEXT>
    Document 1 - file: imos-6-k-2024q4_quarter_.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>imos-ex99_1.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: imos-ex99_1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>imos-ex99_2.htm
    <DESCRIPTION>EX-99.2
    <TEXT>
    Document 3 - file: imos-ex99_2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>img9907805_0.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: img9907805_0.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>img9907805_1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: img9907805_1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>imos-ex99_2s1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: imos-ex99_2s1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>imos-ex99_2s2.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: imos-ex99_2s2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>imos-ex99_2s3.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: imos-ex99_2s3.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>imos-ex99_2s4.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: imos-ex99_2s4.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>imos-ex99_2s5.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: imos-ex99_2s5.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>imos-ex99_2s6.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: imos-ex99_2s6.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>imos-ex99_2s7.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: imos-ex99_2s7.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>imos-ex99_2s8.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: imos-ex99_2s8.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>imos-ex99_2s9.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: imos-ex99_2s9.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>imos-ex99_2s10.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: imos-ex99_2s10.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>imos-ex99_2s11.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: imos-ex99_2s11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>imos-ex99_2s12.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: imos-ex99_2s12.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>imos-ex99_2s13.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: imos-ex99_2s13.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>imos-ex99_2s14.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: imos-ex99_2s14.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>imos-ex99_2s15.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: imos-ex99_2s15.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>imos-ex99_2s16.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: imos-ex99_2s16.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>imos-ex99_2s17.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: imos-ex99_2s17.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>imos-ex99_2s18.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: imos-ex99_2s18.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>imos-ex99_2s19.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: imos-ex99_2s19.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>imos-ex99_2s20.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: imos-ex99_2s20.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>