ChipMOS JANUARY 2021 REVENUE INCREASES 24.9% YoY

HSINCHU,Feb.9,2021 /PRNewswire-FirstCall/ -- ChipMOS TECHNOLOGIES INC. ("ChipMOS"or the "Company") (Taiwan Stock Exchange:8150 and NASDAQ: IMOS),an industry leading provider of outsourced semiconductor assembly and test services ("OSAT"),today reported its unaudited consolidated revenue for the month of January 2021,which increased 24.9% on a year over year basis,to an all-time Company high for the month of January.All U.S. dollar figures cited in this press release are based on the exchange rate of NT$28.01 toUS$1.00 as ofJanuary 29,2021.

Revenue for the month of January 2021was NT$2,163.3million or US$77.2 million,an increaseof24.9%compared to January 2020 and a decreaseof1.2% compared to December 2020.The record high January revenue level reflects favorable supply and demand dynamics,which are a continuation of the trends seen through 2020 and expected to continue into 2021. The Company noted that it benefitted from strong demand in its memory and assembly businesses,with increased DDIC demand. Utilization levels remained high across all segments. The Company is adding additional capacity,increasing automation,and plans to maintain production levels during the upcoming Lunar holiday to meet the higher customer demand.

Consolidated Monthly Revenues (Unaudited)

January2021

December2020

January2020

MoM Change

YoY Change

Revenues

(NT$ million)

2,163.3

2,190.6

1,732.3

-1.2%

24.9%

Revenues

(US$ million)

77.2

78.2

61.8

-1.2%

24.9%

About ChipMOS TECHNOLOGIES INC.:

ChipMOS TECHNOLOGIES INC.("ChipMOS"or the "Company")(Taiwan Stock Exchange: 8150 and NASDAQ: IMOS) (https://www.chipmos.com) is an industry leading provider of outsourced semiconductor assembly and test services. With advanced facilities in Hsinchu Science Park,Hsinchu Industrial Park and Southern Taiwan Science Park in Taiwan,ChipMOS provide assembly and test services to a broad range of customers,including leading fabless semiconductor companies,integrated device manufacturers and independent semiconductor foundries.

Forward-Looking Statements

This press release may contain certain forward-looking statements. These forward-looking statements may be identified by words such as 'believes,' 'expects,' 'anticipates,' 'projects,' 'intends,' 'should,' 'seeks,' 'estimates,' 'future' or similar expressions or by discussion of,among other things,strategy,goals,plans or intentions. These statements may include financial projections and estimates and their underlying assumptions,statements regarding plans,objectives and expectations with respect to future operations,products and services,and statements regarding future performance. Actual results may differ materially in the future from those reflected in forward-looking statements contained in this document,due to various factors,including the potential impact of COVID-19. Further information regarding these risks,uncertainties and other factors are included in the Company's most recent Annual Report on Form 20-F filed with the U.S. Securities and Exchange commission (the "SEC") and in the Company's other filings with the SEC.

Contacts:

In Taiwan

Jesse Huang

ChipMOS TECHNOLOGIES INC.

+886-6-5052388 ext. 7715

IR@chipmos.com

In the U.S.

David Pasquale

Global IR Partners

+1-914-337-8801

dpasquale@globalirpartners.com

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