ChipMOS REPORTS APRIL 2020 REVENUE; NEW RECORD HIGH FOR APRIL

HSINCHU,May 6,2020 --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 April 2020. All U.S. dollar figures cited in this press release are based on the exchange rate of NT$29.72 toUS$1.00 as ofApril 30,2020.

Revenue for the month of April 2020was NT$1,854.3million or US$62.4 million,which is a new record high revenue level for the month of April. This represents an increaseof18.9% as compared to April 2019 and a decreaseof5.7%fromMarch 2020. The Company noted that it benefitted from stable memory demand,including DRAM and NOR flash. These improvements were partially offset by softness in DDIC and gold bumping due to macro weakness in TV and smart phone demand,combined with one less calendar day of operations in the month of April compared to March.

Consolidated Monthly Revenues (Unaudited)

April2020

March 2020

April2019

MoM Change

YoY Change

Revenues

(NT$ million)

1,854.3

1,966.8

1,559.5

-5.7%

18.9%

Revenues

(US$ million)

62.4

66.2

52.5

-5.7%

18.9%

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. 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

In the U.S.

Jesse Huang

David Pasquale

ChipMOS TECHNOLOGIES INC.

Global IR Partners

+886-6-5052388 ext. 7715

+1-914-337-8801

IR@chipmos.com

dpasquale@globalirpartners.com

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