©

2013 Amkor Technology, Inc.

Amkor Confidential Information

1

Disclaimer

This Presentation includes forward-looking statements within the meaning of the Private Securities

Litigation Reform Act of 1995. These statements relate to, among

other things, revenues, earnings, cash

flows, capital expenditures, working capital and other financial

items. These statements also relate to our

business strategy, goals and expectations concerning our market position, future operations, margins,

profitability, liquidity and capital resources.

Although we believe the assumptions upon which these forward-looking statements are based are

reasonable, any of these assumptions could prove to be inaccurate, and the forward-looking statements

based on these assumptions could be incorrect. Our operations involve risks and uncertainties, many of

which are outside our control, and any one of which, or a combination of which, could materially affect our

results of operations and whether the forward-looking statements ultimately prove to be correct.

Actual results and trends in the future may differ materially from those suggested or implied by the forward

looking statements depending on a variety of factors including those that are described in greater detail in

our Annual Report on Form 10-K for the year ended December 31, 2012, other filings with the Securities

Exchange Commission and the offering memorandum with respect to the proposed notes. All future

written and oral forward-looking statements attributable to us or persons acting on our behalf are expressly

qualified in their entirety by the previous statements. We undertake no obligation to update any information

contained herein or to publicly release the results of any revisions to any forward-looking statements that

may be made to reflect events or circumstances that occur, or that we become aware of, after the date of

this Presentation.

THIS PRESENTATION IS NOT INTENDED TO BE READ SEPARATELY FROM, AND SHOULD BE

READ IN CONJUNCTION WITH, THE CONFIDENTIAL OFFERING MEMORANDUM WITH RESPECT

TO THE PROPOSED NOTES. THIS PRESENTATION IS QUALIFIED IN ITS ENTIRETY BY

REFERENCE TO THE CONFIDENTIAL OFFERING MEMORANDUM WITH RESPECT TO THE

PROPOSED NOTES.

Exhibit 99.1

©

2013 Amkor Technology, Inc.

Amkor Confidential Information

Transaction Overview

2

($ in millions)

Sources

Uses

6.375% senior notes add-on

$200

General corporate purposes

190

Debt issuance premium

8

Inducement premium for Convertible Notes

15

Estimated fees and expenses

3

Total sources

$208

Total uses

$208

Pro forma capitalization

3/31/13

x EBITDA

Adjustments

(3)

Pro forma

x EBITDA

Cash

$467

$190

$657

$150M revolving credit facility

--

--

--

--

Debt of subsidiaries

283

0.5x

283

0.5x

Total secured debt

$283

0.5x

$283

0.5x

7.375% senior notes due 2018

345

0.6x

345

0.6x

6.625% senior notes due 2021

400

0.7x

400

0.7x

6.375% senior notes due 2022

300

0.6x

200

500

0.9x

Total secured and senior debt

$1,328

2.5x

$1,528

2.8x

6.000% conv. sr. sub. notes

250

0.5x

(250)

--

--

Total debt

$1,578

2.9x

$1,528

2.8x

Net debt

$1,111

$871

Market capitalization

(1)

703

379

1,082

Total capitalization

$2,281

$2,610

LTM 3/31/2013 EBITDA

$542

$542

LTM 3/31/2013 interest expense

(2)

101

(3)

98

LTM 3/31/2013 capital additions

534

534

Total debt / LTM EBITDA

2.9x

2.8x

Net debt / LTM EBITDA

2.1x

1.6x

LTM EBITDA / LTM interest expense

5.4x

5.5x

(LTM

EBITDA

-

capital additions) / LTM interest expense

0.1x

0.1x

(1)     Market

capitalization

based

on

$4.59

stock

price

as

of

5/10/2013

and

basic

shares

outstanding

as of 4/26/2013 per

the

latest

public

10-Q

filing.

Pro

forma

market

cap

based

on

shares

outstanding

after

the

inducement

of

the

$250

million

Convertible

Notes

with

$3.02

conversion

price,

which

resulted

in

an

incremental

250

million

/

$3.02

=

82.8

million

shares.

(2)     Interest expense pro forma for new debt issue and additional interest income on cash to balance sheet.

(3)    Assumes 100% participation in the exchange offer for the 2014 Convertible Notes

©

2013 Amkor Technology, Inc.

Amkor Confidential Information

3

Pro Forma Debt Maturities

Current Maturity Profile as of March 31, 2013: $1,578 Million

($ millions)

Pro Forma Maturity Profile as of March 31, 2013: $1,528 Million

($ millions)

$0

$0

$0

$0

$0

$0

Callable Notes

Due

Balance ($M)

First Call Date

Call Price

7.375% Senior Notes

May 2018

$345

May 2014

103.688

6.625% Senior Notes

June 2021

$400

June 2015

104.969

6.375% Senior Notes

October 2022

$300

October 2016

104.781

New 6.375% add-on notes

October 2022

$200

October 2016

104.781

$5

$250

$255

$105

$150

$345

$23

$400

$300

2013

2014

2015

2016

2017

2018

2019

2020

2021

2022

Term loans

Senior Notes

Convertible Notes

Total

$5

$105

$150

$345

$23

$400

$500

2013

2014

2015

2016

2017

2018

2019

2020

2021

2022

Term loans

Senior Notes

Convertible Notes

Total

©

2013 Amkor Technology, Inc.

Amkor Confidential Information

Key Financial Highlights:  LTM 1Q13

4

Investing for Growth Opportunities

Debt Increasing in Line with Improving

Profitability and Growing Cash Flow

Debt/EBITDA Under 3.0x

$2.79 Billion

Net Sales

EBITDA

(1)

Net Income

$542 Million

Adjusted

(2)

$592 Million

$43 Million

Adjusted

(2)

$95 Million

(1)

EBITDA

is

defined

as

net

income

before

interest

expense,

income

tax

expense

and

depreciation

and

amortization

-

Refer

to

reconciliation

of

Non-GAAP

measures

in

the

appendix

(2) 

Adjusted

EBITDA

excludes

$50

million

cost

of

goods

sold

portion

of

loss

contingency

charge.

Adjusted

Net

Income

excludes

$56

million

loss

contingency

charge

($52

million,

net

of

tax)

-

Refer

to

reconciliation

of        

Non-GAAP measures in the appendix

©

2013 Amkor Technology, Inc.

Amkor Confidential Information

Mobile Communications Driving Semi Growth

5

Source:  Prismark Partners.  February 2013

*  Other includes Medical, Industrial, Military and Aerospace

Growth -

$43B

CAGR -

10%

Growth -

$6B

CAGR -

3%

Growth -

$6B

CAGR -

2%

Growth -

$15B

CAGR -

6%

Growth -

$7B

CAGR -

5%

Growth -

$11B

CAGR -

4%

Semiconductor Industry

Growth

2012 -

$292B

2017F -

$380B

Growth -

$88B

CAGR -

5%

$69

$36

$68

$47

$25

$47

$112

$42

$74

$62

$32

$58

$0

$20

$40

$60

$80

$100

$120

$140

Mobile Phones &

Tablets

Consumer

Computing

Networking

Automotive

Other*

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Amkor Confidential Information

6

LTM 1Q13 Net Sales and Packaged Units

by Factory Location

Japan

210k sf

Philippines

1.4M sf

Taiwan

850k sf

China

1.0M sf

Korea

2.3M sf

5.8 Million Sq. Ft. Manufacturing Space

53%

32%

18%

49%

12%

6%

13%

10%

4%

3%

Net Sales

Units

Korea

Philippines

Taiwan

China

Japan

World-Class Manufacturing Infrastructure, Scale and Scope

©

2013 Amkor Technology, Inc.

Amkor Confidential Information

(1)  

Free

cash

flow

is

defined

as

operating

cash

flow

less

purchases

of

property,

plant

and

equipment

-

Refer

to

reconciliation

of

Non-GAAP

measures

in

the

appendix

(2) 

EBITDA

is

defined

as

net

income

before

interest

expense,

income

tax

expense

and

depreciation

and

amortization

-

Refer

to

reconciliation

of

Non-GAAP

measures

in

the

appendix

(3)

Excluding

loss

contingency

accrual

of

$22

million

($20

million

cost

of

goods

sold,

$2

million

interest

expense.

$20

million,

net

of

tax)

-

Refer

to

reconciliation

of

Non-GAAP

measures

in

the

appendix

(In millions, except per share data)

1Q 2012

4Q 2012

1Q 2013

Actual

Adjusted

(3)

Net Sales

$655

$723

$723

$688

Gross Margin

16%

16%

18%

17%

Net Income

$12

$7

$27

$13

Earnings Per Diluted Share

$0.06

$0.05

$0.13

$0.07

Free Cash Flow

(1)

($65)

($49)

($49)

($14)

EBITDA

(2)

$126

$139

$159

$140

Packaging Utilization

73%

77%

77%

76%

7

First Quarter 2013 Summary

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2013 Amkor Technology, Inc.

Amkor Confidential Information

8

Profitability Trends

Revenue and Gross Profit

($ in millions)

Selling, General & Administrative and

Research & Development

($ in millions)

2012 and LTM 1Q13 Adjusted Gross Margin of 17%

(1)

$2,939

$2,776

$2,760

$2,792

$664

$491

$424

$434

23%

18%

15%

16%

0%

5%

10%

15%

20%

25%

30%

$-

$500

$1,000

$1,500

$2,000

$2,500

$3,000

$3,500

2010

2011

2012

LTM 1Q13

Revenue

Gross Profit

Gross Margin %

$242

$247

$217

$219

$48

$50

$54

$55

10%

11%

10%

10%

0%

5%

10%

15%

20%

25%

30%

$-

$50

$100

$150

$200

$250

$300

2010

2011

2012

LTM 1Q13

SG&A

R&D

SG&A and R&D % of Rev

Excludes $50 million cost of goods sold portion of loss contingency charge - Refer to reconciliation of Non-GAAP measures in the appendix

(1)

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2013 Amkor Technology, Inc.

Amkor Confidential Information

9

Free Cash Flow and EBITDA

Free Cash Flow

(1)

($ in millions)

(1)

Free

cash

flow

is

defined

as

net

cash

provided

by

operating

activities

less

purchases

of

property,

plant

and

equipment

-

Refer

to

reconciliation

of

Non-GAAP

measures

in

the

appendix

(2)  

EBITDA

is

defined

as

net

income

before

interest

expense,

income

tax

expense

and

depreciation

and

amortization

-

Refer

to

reconciliation

of

Non-GAAP

measures

in

the

appendix

EBITDA

(2)

($ in millions)

2012 and LTM 1Q13 Include $20 Million Payment for

Loss Contingency

2012 and LTM 1Q13 Include $50 Million for Loss

Contingency Charge

2010

2011

2012

LTM 1Q13

2010

2011

2012

LTM 1Q13

$97

$50

($144)

($93)

$676

$521

$527

$542

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10

Capital Additions and Capital Intensity

Amkor Capital Intensity

Capital Intensity is defined as capital additions as a percentage of net sales ($ in millions)

LTM 1Q13 Capital Additions Mix

Packaging

Test

Infrastructure /

R&D

Operating Cash Flow and CapEx

($ in millions)

2013 Capital Additions of Around $525 Million to

Largely Support Demand for Mobile Communications

from Major Customers

Based on Current Demand Expectations.  Can be Fluid

Over Time, Increasing or Decreasing from Current

Expectations.

New K5 Factory and R&D Center

–

Total spending of around $400 million for land and

construction over the next several years

–

In 2013, around $150 million of spending for land and

construction (incremental to $525 million discussed above)

44%

38%

18%

$505

$453

$533

$534

17%

16%

19%

19%

0%

5%

10%

15%

20%

$-

$100

$200

$300

$400

$500

$600

$700

2010

2011

2012

LTM 1Q13

Capital Additions

Capital Intensity %

$543

$517

$389

$432

$446

$467

$534

$525

1.2

1.1

0.7

0.8

-

0.2

0.4

0.6

0.8

1.0

1.2

$-

$100

$200

$300

$400

$500

$600

$700

2010

2011

2012

LTM 1Q13

Oper. Cash Flow

CapEx Cash Paid

Oper. CF/Cash CapEx

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11

Credit Profile

Total Debt, Net Debt and Cash Balance

Debt/EBITDA and Net Debt/EBITDA

EBIT and Interest Expense

($ in millions)

Excluding Loss Contingency Accrual

(1)

2012

LTM 1Q13

Debt/EBITDA

2.7x

2.7x

Net Debt/EBITDA

2.0x

1.9x

EBIT ($M)

$207

$213

EBIT/Interest Expense

2.2x

2.2x

$1.4

$1.3

$1.5

$1.6

$1.0

$0.9

$1.1

$1.1

$405

$435

$413

$467

$-

$100

$200

$300

$400

$500

$-

$0.5

$1.0

$1.5

$2.0

2010

2011

2012

LTM 1Q13

Total Debt

Net Debt

Cash Balance

2.0

2.6

2.9

2.9

1.4

1.8

2.1

2.1

2010

2011

2012

LTM 1Q13

Debt/EBITDA

Net Debt/EBITDA

$352

$186

$157

$163

$101

$87

$98

$101

3.5

2.1

1.6

1.6

-

0.5

1.0

1.5

2.0

2.5

3.0

3.5

$-

$100

$200

$300

$400

2010

2011

2012

LTM 1Q13

EBIT

Interest Expense

EBIT/Int. Exp.

(1)

Excludes $56 million loss contingency charge ($50 million cost of goods sold; $6 million interest 

expense; $52 million, net of tax) - Refer to reconciliation of Non-GAAP measures in the appendix

©

2013 Amkor Technology, Inc.

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12

Financial Reconciliation Tables

(1)

See discussion of Non-GAAP measures on page 20

($ in millions)

2010

2011

2012

LTM 1Q13

Q112

Q412

Q113

Net Cash Provided by Operating Activities

$543

$517

$389

$432

$56

$105

$99

Less: Purchases of Property, Plant and Equipment

(446)

(467)

(534)

(525)

(121)

(154)

(113)

Free Cash Flow

(1)

$97

$50

($144)

($93)

($65)

($49)

($14)

Property, Plant and Equipment Additions

(Capital Additions)

$505

$453

$533

$534

$124

$86

$124

Net Change in Related Accounts Payable

and Deposits

(59)

14

1

(9)

(3)

68

(11)

Purchases of Property, Plant and Equipment

$446

$467

$534

$525

$121

$154

$113

Net Income

$232

$92

$42

$43

$12

$7

$13

Plus:  Interest Expense (Including Related Party)

101

87

98

101

22

27

26

Plus:  Income Tax Expense

19

7

17

19

3

8

4

EBIT

(1)

352

186

157

163

37

42

43

Plus:  Depreciation & Amortization

324

335

370

379

89

97

97

EBITDA

(1)

$676

$521

$527

$542

$126

$139

$140

©

2013 Amkor Technology, Inc.

Amkor Confidential Information

13

Financial Reconciliation Tables

(1)

See discussion of Non-GAAP measures on page 20

($ in millions)

2010

2011

2012

LTM 1Q13

Operating Income

$374

$194

$153

$159

Plus:  Equity in Earnings of Unconsolidated Affiliate

6

7

6

4

Less:  Income Tax Expense

(19)

(7)

(17)

(19)

Net Operating Profit After Tax (NOPAT)

$361

$194

$142

$144

Average Debt

$1,399

$1,355

$1,446

$1,466

Plus:  Average Equity

507

662

676

684

Less:  Average Cash

(400)

(420)

(424)

(424)

Average Invested Capital

$1,506

$1,597

$1,698

$1,726

Return on Invested Capital (ROIC)

(1)

24%

12%

8%

8%

(NOPAT / Average Invested Capital)

Total Debt

$1,364

$1,347

$1,545

$1,578

Less:  Cash

405

435

413

467

Net Debt

$959

$912

$1,132

$1,111

EBITDA

(1)

$676

$521

$527

$542

Debt / EBITDA

2.0

2.6

2.9

2.9

Net Debt / EBITDA

1.4

1.8

2.1

2.1

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2013 Amkor Technology, Inc.

Amkor Confidential Information

14

Financial Reconciliation Tables

We define free cash flow as net cash provided by operating activities less purchases of property, plant and equipment.  Free cash

flow is not defined by U.S. generally accepted accounting principles ("U.S. GAAP").  However, we believe free cash flow to be

relevant and useful information to our investors because it provides them with additional information in assessing our liquidity, capital

resources and financial operating results.  Our management uses free cash flow in evaluating our liquidity, our ability to service debt

and our ability to fund capital additions.  However, free cash flow has certain limitations, including that it does not represent the

residual cash flow available for discretionary expenditures since other, non-discretionary expenditures, such as mandatory debt

service, are not deducted from the measure.  The amount of mandatory versus discretionary expenditures can vary significantly

between periods.  This measure should be considered in addition to, and not as a substitute for, or superior to, other measures of

liquidity or financial performance prepared in accordance with U.S. GAAP, such as net cash provided by operating activities. 

Furthermore, our definition of free cash flow may not be comparable to similarly titled measures reported by other companies.

We define EBIT as net income before interest expense and income tax expense. We define EBITDA as EBIT before depreciation

and amortization. EBIT and EBITDA are not defined by U.S. GAAP. However, we believe EBIT and EBITDA to be relevant and

useful information to our investors because they provide investors with additional information in assessing our financial operating

results. Our management uses EBIT and EBITDA in evaluating our operating performance, our ability to service debt and our ability

to fund capital additions. However, these measures should be considered in addition to, and not as a substitute for, or superior to,

operating income, net income or other measures of financial performance prepared in accordance with U.S. GAAP, and our

definitions of EBIT and EBITDA may not be comparable to similarly titled measures reported by other companies.

We define return on invested capital ("ROIC") as net operating profit after tax (the sum of operating income plus equity in earnings of

unconsolidated affiliate less income tax expense) divided by average invested capital (the sum of average debt plus average equity

less average cash).  ROIC is not defined by U.S. GAAP.  However, we believe ROIC is relevant and useful information for our

investors and management in evaluating whether our capital investments are generating stockholder value.

©

2013 Amkor Technology, Inc.

Amkor Confidential Information

In this presentation we provide adjusted gross margin, adjusted net income, adjusted earnings per diluted share and adjusted EBITDA for the quarter and year ended December 31,

2012, and the twelve months ended March 31, 2013.  We present these non-GAAP amounts to demonstrate the impact of the loss contingency we recognized for the quarter and year

ended December 31, 2012, and the twelve months ended March 31, 2013, related to our pending patent license arbitration with Tessera, Inc.  However, these measures have limitations,

including that they exclude the charges for the Tessera arbitration award, which is an amount that the company may ultimately have to pay in cash.  Furthermore, the factors affecting the

calculation of the arbitration award are complex and subject to determination by the arbitration panel.  Therefore, the final amount of the loss may be more than the amount we have

recognized.  Accordingly, these measures that exclude the loss contingency should be considered in addition to, and not as a substitute for, or superior to, gross margin, net income and

earnings per diluted share prepared in accordance with U.S. GAAP.  Above is the reconciliation of adjusted gross margin, adjusted net income and adjusted earnings per diluted share to

U.S. GAAP gross margin, net income and earnings per diluted share.

15

Financial Reconciliation Tables

(1)

See discussion of Non-GAAP measures on page 20

4Q12

2012

LTM 1Q13

Gross Margin

16%

15%

16%

Plus:  Loss Contingency Charge Divided by Net Sales

2%

2%

1%

Adjusted Gross Margin

18%

17%

17%

Net Income  

$7

$42

$43

Plus:  Loss Contingency Charge, Net of Tax

20

52

52

Adjusted Net Income

$27

$94

$95

Earnings per Diluted share

$0.05

$0.24

$0.23

Plus:  Loss Contingency Charge per Diluted Share

0.08

0.21

0.21

Adjusted Earnings per Diluted Share

$0.13

$0.45

$0.44

EBITDA

(1)

$139

$527

$542

Plus:  Cost of Goods Sold Portion of Loss Contingency Charge

20

50

50

Adjusted EBITDA

(1)

$159

$577

$592

($ in millions)

($ in millions)