Amkor Technology : Investor Presentation - August 2021

Amkor Technology, Inc.

Investor Presentation

August 2021

© 2021 Amkor Technology, Inc.

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Disclaimer

Forward-Looking Statement Disclaimer

This presentation contains forward-looking statements within the meaning of federal securities laws. You are cautioned not to place undue reliance on forward-

looking statements, which are often characterized by terminology such as "may," "will," "should," "expects," "plans," "anticipates," "believes," "estimates,"

"predicts," "potential," "continue," "intend," by the negative of these terms or other comparable terminology or by discussions of strategy, plans or intentions. These forward-looking statements, involve a number of risks, uncertainties, assumptions and other factors that could affect future results and cause actual results and events to differ materially from historical and expected results and those expressed or implied in the forward-looking statements. Other important risk factors that could affect the outcome of the events set forth in these statements and that could affect our operating results and financial condition are discussed in the company's Annual Report on Form 10-K for the year ended December 31, 2020 (the "Form 10-K") and in the company's subsequent filings with the Securities and Exchange Commission ("SEC") made prior to or after the date hereof. You should carefully consider the trends, risks and uncertainties described in this presentation, the Form 10-K and other reports filed with or furnished to the SEC before making any investment decision with respect to our securities. If any of the following trends, risks or uncertainties actually occurs or continues, our business, financial condition or operating results could be materially adversely affected, the trading prices of our securities could decline, and you could lose part or all of your investment. All forward-looking statements in this press release are made based on our current expectations, forecasts, estimates and assumptions. Amkor undertakes no obligation to review or update any forward-looking statements to reflect events or circumstances occurring after the date of this press release except as may be required by law. All forward- looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by this cautionary statement.

Non-GAAP Measures

This presentation contains certain measures that are not defined terms under U.S. generally accepted accounting principles ("U.S. GAAP"). These non-GAAP measures should not be considered in isolation or as a substitute for, or superior to, measures of liquidity or performance prepared in accordance with U.S. GAAP and may not be comparable to calculations of similarly titled measures by other companies. See "Financial Reconciliation Tables", "Non-GAAP Measures" and "Endnotes."

© 2021 Amkor Technology, Inc.

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Amkor Technology

• Trusted Outsourced Semiconductor Assembly and Test (OSAT) partner since 1968
• Advanced packaging leader
• #1 OSAT for Automotive ICs
• $5.1B sales in 2020

© 2021 Amkor Technology, Inc.

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Amkor in the Supply Chain

Amkor's packaging and test services are an integral part

of the worldwide semiconductor supply chain

SemiconductorWafer

Companies Manufacturing

Packaging

and Test

Original Equipment

Manufacturers

Fabless	Wafer Foundry
IDM	IDM Fab

OSAT

IDM Factory

Smartphone & Tablet

Automotive

Consumer Electronic

© 2021 Amkor Technology, Inc.

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Amkor's Differentiators

	Technology		Quality	Service
▶	Advanced Packaging	▶	QualityFIRST Culture	▶ Design Through Drop Ship
	Leadership	▶	Execution	▶ Manufacturing Footprint
	Engineering Services
▶	▶	Automation	▶ Local Sales & Support

• Broad Portfolio

© 2021 Amkor Technology, Inc.

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