November, 2017

Industry Leading Provider of Outsourced Semiconductor

Assembly, Test & Bumping Services

Q3’17 Results Conference

2 2

Safe Harbor Notice

This presentation contains 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 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. 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.

Agenda

Welcome S.J. Cheng

Q3’17 Operating Results Silvia Su

Q4’17 Business Outlook S.J. Cheng

Q&A

3

4

Q3’17 Operating Results

(NT $ Millions)

Net Revenue 4,431.1 4,541.2 4,769.0

Profit Attributable to the Company 162.0 321.4 255.1

EPS Attributable to the Company- Diluted

(NT$)0.19 0.38 0.29

Earnings per ADS equivalent- Diluted(1)(4)

(US$)0.13 0.25 0.20

Depreciation & Amortization 744.5 709.3 806.8

CAPEX 1,118.8 1,395.3 979.9

EBITDA(2) 1,146.7 1,157.9 1,365.3

Return on Equity(%)(3) 4.7% 7.1% 5.9%

Note：(1) The ADS was issued in Q4'16

(2) EBITDA = Operating Profit + Depreciation & Amortization

(3) Annualized return on equity to the Company for the quarter

(4) The exchange rate was NT$30.33 against to US$1.00

Q3'17 Q2'17 Q3'16

Consolidated Operating Results Summary (unaudited)

5

(NT $ Millions)

Net Revenue 4,431.1 4,541.2 -2.4% 4,769.0 -7.1%

Gross Profit 760.8 910.4 -16.4% 966.4 -21.3%

Gross Margin 17.2% 20.1% -2.9ppts 20.3% -3.1ppts

Operating Expenses -386.3 -493.5 21.7% -425.3 9.2%

Operating Profit 402.2 448.6 -10.3% 558.5 -28.0%

Operating Profit Margin 9.1% 9.9% -0.8ppts 11.7% -2.6ppts

Non-operating Income (Expenses) -114.1 -56.4 -102.3% -250.5 54.5%

Profit Attributable to the Company 162.0 321.4 -49.6% 255.1 -36.5%

EPS Attributable to the Company- Basic (NT$) 0.19 0.38 -50.0% 0.30 -36.7%

Weighted Average Shares Outstanding(in

thousands)- Basic846,840 845,206 0.2% 851,980 -0.6%

EPS Attributable to the Company - Diluted (NT$) 0.19 0.38 -50.0% 0.29 -34.5%

Weighted Average Shares Outstanding(in

thousands)- Diluted853,644 852,649 0.1% 858,968 -0.6%

Q3'17 Q2'17

Q3'17

over

Q2'17

Q3'16

Q3'17

over

Q3'16

Consolidated Statements of Comprehensive Income (unaudited)

6

Package Test15.6%

Wafer Sort11.0%

Assembly27.3%

LCD Driver27.2%

Bumping (incl. RDL/MEMS/PM)

18.9%

0

200

400

600

800

1,000

Q2'17 Q3'17

Bumping (incl. RDL/MEMS/PM) ( NT$ M)

Q3’17 Revenue Breakdown By Segment (unaudited)

7

By Manufacturing Segments

0

200

400

600

800

1,000

1,200

1,400

Q2'17 Q3'17

LCD Driver

QoQ 6.7% ( NT$ M)

0

200

400

600

800

1,000

1,200

1,400

1,600

Q2'17 Q3'17

Assembly ( NT$ M)

0

200

400

600

800

Q2'17 Q3'17

Wafer Sort ( NT$ M)

0

200

400

600

800

1,000

Q2'17 Q3'17

Package Test ( NT$ M)

QoQ 22.5% QoQ -17.5% QoQ -5.8% QoQ -7.1%

Q3’17 Revenue Breakdown By Product (unaudited)

8

By Products

Niche DRAM

13.7%

Commodity

DRAM8.0%

Flash

20.1%

SRAM

0.9%

Logic/Mixed Signal

10.7%

DDIC

28.1%

Au Bumping

(incl. RDL)18.5%

0

200

400

600

800

1,000

Q2'17 Q3'17

Au Bumping (Incl. RDL) ( NT$ M)

0

500

1,000

1,500

Q2'17 Q3'17

DDIC

QoQ 7.1% ( NT$ M)

0

100

200

300

400

500

600

Q2'17 Q3'17

Logic/Mixed Signal

QoQ -6.3% ( NT$ M)

0

10

20

30

40

50

Q2'17 Q3'17

SRAM

QoQ -9.7% ( NT$ M)

0

200

400

600

800

1,000

Q2'17 Q3'17

Flash

QoQ 6.6% ( NT$ M)

0

200

400

600

800

Q2'17 Q3'17

Niche DRAM

QoQ -16.5% ( NT$ M)

0

100

200

300

400

500

600

700

Q2'17 Q3'17

Commodity DRAM

QoQ -40.7% ( NT$ M)

QoQ 22.6%

Consolidated Statements of Financial Position & Key Indices (unaudited)

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(NT $ Millions) Amount % Amount % Amount %

Current Assets 15,051.7 44.5% 16,910.3 47.9% 19,112.2 54.8%

Non-current Assets 18,759.1 55.5% 18,427.1 52.1% 15,751.7 45.2%

Total Assets 33,810.8 100.0% 35,337.4 100.0% 34,863.9 100.0%

Current Liabilities 6,327.2 18.7% 8,087.4 22.9% 5,964.5 17.1%

Non-current Liabilities 9,316.1 27.6% 9,307.9 26.3% 8,864.2 25.4%

Total Liabilities 15,643.3 46.3% 17,395.3 49.2% 14,828.7 42.5%

Total Equity 18,167.5 53.7% 17,942.1 50.8% 20,035.2 57.5%

Total Liabilities and Equity 33,810.8 100.0% 35,337.4 100.0% 34,863.9 100.0%

Key Indices

A/R Turnover Days

Inventory Turnover Days

72

49

Q3'17

78

48

Q2'17

71

48

Q3'16

Consolidated Statements of Cash Flows (unaudited)

10

(NT $ Millions)

Cash and Cash Equivalents at Beginning of Period 7,571.4 12,127.4

Net Cash Generated from(used in) Operating Activities 3,489.5 2,426.9

Net Cash Generated from(used in) Investing Activities -2,260.4 -3,256.9

Net Cash Generated from(used in) Financing Activities -118.7 921.9

Effect of Exchange Rate Change on Cash -14.9 -66.4

Cash and Cash Equivalents at End of Period 8,666.9 12,152.9

Free Cash Flow -841.9 1,650.0

Q1-Q3' 17 Q1-Q3' 16

Test17.3%

Assembly12.0%

LCD Driver63.1%

Bumping7.6%

Q3’17 Capital Expenditures (unaudited)

11

CapEx

3,644.6

3,123.3

3,648.7

979.9 1,118.8

0

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

2015 2016 Q1-Q3' 17 Q3'16 Q3'17

( NT$ M)

Q3’17 CapEx Breakdown

74% 76% 77% 76%

0%

20%

40%

60%

80%

100%

Q3'16 Q3'17 Q2'17 Q3'17

Q3’17 Capacity Utilization

12

Utilization Rate

82% 75%

0%

20%

40%

60%

80%

100%

Q2'17 Q3'17

Test

73% 63%

0%

20%

40%

60%

80%

100%

Q2'17 Q3'17

Assembly

87% 87%

0%

20%

40%

60%

80%

100%

Q2'17 Q3'17

LCD Driver

63%

77%

0%

20%

40%

60%

80%

100%

Q2'17 Q3'17

Bumping

13

Q4’17 Business Outlook

14

Company website

15

http://www.chipmos.com