Second Quarter Highlights

Record net sales $1.41 billion, up 20% year-on-year
Gross margin 19.4%, operating income margin 11.0%
Record second quarter net income $126 million, record second quarter earnings per diluted share $0.51
EBITDA $295 million

Amkor Technology, Inc. (NASDAQ:AMKR), a leading provider of semiconductor packaging and test services, today announced financial results for the second quarter ended June 30, 2021.

"Second quarter revenue grew 6% sequentially to a new all-time record of $1.41 billion. Strong demand for Advanced SiP in the Communications and Consumer end markets drove revenue above the high end of expectations," said Giel Rutten, Amkor's president and chief executive officer. "Our Automotive and Industrial business grew 33% year-on-year to a record $300 million, overcoming several supply chain challenges."

Results	Q2 2021	Q1 2021	Q2 2020
	($ in millions, except per share data)
Net sales	$1,407	$1,326	$1,173
Gross margin	19.4%	20.0%	16.4%
Operating income	$155	$144	$87
Operating income margin	11.0%	10.9%	7.4%
Net income attributable to Amkor	$126	$120	$55
Earnings per diluted share	$0.51	$0.49	$0.23
EBITDA (1)	$295	$280	$209

(1) EBITDA is a non-GAAP financial measure. The reconciliation to the most directly comparable GAAP financial measure is included below under "Selected Operating Data."

"Strong utilization and growth in Advanced SiP drove solid profitability. Operating income margin expanded 365 basis points year-on-year to 11%, and EPS more than doubled to a second quarter record of $0.51," said Megan Faust, Amkor's executive vice president and chief financial officer. "EBITDA grew over 40% year-on-year, and our solid financial position provides flexibility to continue to invest in growth opportunities."

At June 30, 2021, total cash and short-term investments was $0.9 billion, and total debt was $1.1 billion.

We paid a quarterly dividend of $0.04 per share, representing a dividend payment of $9.8 million in the aggregate, on June 28, 2021 to stockholders of record as of June 7, 2021. The declaration and payment of future dividends, as well as any record and payment dates, are subject to the approval of the Board of Directors.

Business Outlook

"We expect 26% year-on-year growth in the third quarter with revenue of $1.70 billion, fueled by new product ramps for Advanced products in Communications," said Rutten. "We are working closely with our customers and suppliers to help mitigate ongoing supply chain constraints affecting the semiconductor industry."

Third quarter 2021 outlook (unless otherwise noted):

Net sales of $1.65 billion to $1.75 billion
Gross margin of 18.5% to 20.5%
Net income of $150 million to $200 million, or $0.60 to $0.80 per diluted share
Full year 2021 capital expenditures of approximately $775 million

Conference Call Information

Amkor will conduct a conference call on Monday, July 26, 2021, at 5:00 p.m. Eastern Time. This call may include material information not included in this press release. To access the live audio webcast and the accompanying slide presentation, visit the Investor Relations section of Amkor's website, located at https://ir.amkor.com. The live call can also be accessed by dialing 1-877-407-4019 or 1-201-689-8337.

About Amkor Technology, Inc.

Amkor Technology, Inc. is one of the world's largest providers of outsourced semiconductor packaging and test services. Founded in 1968, Amkor pioneered the outsourcing of IC packaging and test and is now a strategic manufacturing partner for the world's leading semiconductor companies, foundries and electronics OEMs. Amkor's operational base includes production facilities, product development centers, and sales and support offices located in key electronics manufacturing regions in Asia, Europe and the USA. For more information, visit www.amkor.com.

AMKOR TECHNOLOGY, INC. Selected Operating Data

	Q2 2021			Q1 2021			Q2 2020
Net Sales Data:
Net sales (in millions):
Advanced products (1) (3)	$	980		$	921		$	835
Mainstream products (2) (3)	427			405			338
Total net sales	$	1,407		$	1,326		$	1,173

Packaging services	85		%	85		%	84		%
Test services	15		%	15		%	16		%

Net sales from top ten customers	61		%	61		%	69		%

End Market Data:
Communications (handheld devices, smartphones, tablets)	40		%	40		%	38		%
Consumer (connected home, set-top boxes, televisions, visual imaging, wearables)	22		%	21		%	27		%
Automotive, industrial and other (driver assist, infotainment, performance, safety)	22		%	22		%	19		%
Computing (data center, infrastructure, PC/laptop, storage)	16		%	17		%	16		%
Total	100		%	100		%	100		%

Gross Margin Data:
Net sales	100.0		%	100.0		%	100.0		%
Cost of sales:
Materials	44.7		%	43.2		%	45.2		%
Labor	13.1		%	13.8		%	13.9		%
Other manufacturing	22.8		%	23.0		%	24.5		%
Gross margin	19.4		%	20.0		%	16.4		%

(1) Advanced products include flip chip, memory and wafer-level processing and related test services.

(2) Mainstream products include all other wirebond packaging and related test services.

(3) Beginning in 2021, we are reporting memory net sales in Advanced products. Previously memory net sales were reported in Mainstream products. Prior year amounts were reclassified to conform to current year presentation.

AMKOR TECHNOLOGY, INC.

Selected Operating Data

In this press release we refer to EBITDA, which is not defined by U.S. GAAP. We define EBITDA as net income before interest expense, income tax expense and depreciation and amortization. We believe EBITDA to be relevant and useful information to our investors because it provides additional information in assessing our financial operating results. Our management uses EBITDA in evaluating our operating performance, our ability to service debt and our ability to fund capital expenditures. However, EBITDA has certain limitations in that it does not reflect the impact of certain expenses on our consolidated statements of income, including interest expense, which is a necessary element of our costs because we have borrowed money in order to finance our operations, income tax expense, which is a necessary element of our costs because taxes are imposed by law, and depreciation and amortization, which is a necessary element of our costs because we use capital assets to generate income. EBITDA 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. Furthermore our definition of EBITDA may not be comparable to similarly titled measures reported by other companies. Below is our reconciliation of EBITDA to U.S. GAAP net income.

Non-GAAP Financial Measure Reconciliation:
	Q2 2021		Q1 2021		Q2 2020
	(in millions)
EBITDA Data:
Net income	$	126	$	120	$	56
Plus: Interest expense	13		13		16
Plus: Income tax expense	16		12		13
Plus: Depreciation & amortization	140		135		124
EBITDA	$	295	$	280	$	209

AMKOR TECHNOLOGY, INC. CONSOLIDATED STATEMENTS OF INCOME (Unaudited)

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2021			2020			2021			2020
	(In thousands, except per share data)
Net sales	$	1,406,535		$	1,172,909		$	2,732,685		$	2,325,525
Cost of sales	1,133,715			980,589			2,194,331			1,944,297
Gross profit	272,820			192,320			538,354			381,228
Selling, general and administrative	74,189			74,260			150,957			146,842
Research and development	43,516			31,536			87,834			63,789
Total operating expenses	117,705			105,796			238,791			210,631
Operating income	155,115			86,524			299,563			170,597
Interest expense	12,764			16,012			25,437			33,057
Other (income) expense, net	(96		)	1,467			(7		)	(848		)
Total other expense, net	12,668			17,479			25,430			32,209
Income before taxes	142,447			69,045			274,133			138,388
Income tax expense	15,989			12,905			27,656			17,751
Net income	126,458			56,140			246,477			120,637
Net income attributable to non-controlling interests	(652		)	(716		)	(862		)	(1,324		)
Net income attributable to Amkor	$	125,806		$	55,424		$	245,615		$	119,313

Net income attributable to Amkor per common share:
Basic	$	0.52		$	0.23		$	1.01		$	0.50
Diluted	$	0.51		$	0.23		$	1.00		$	0.49

Shares used in computing per common share amounts:
Basic	243,863			241,098			243,566			241,009
Diluted	245,551			241,410			245,372			241,345

AMKOR TECHNOLOGY, INC. CONSOLIDATED BALANCE SHEETS (Unaudited)

	June 30, 2021			December 31, 2020
	(In thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	724,785		$	698,002
Restricted cash	937			1,007
Short-term investments	160,941			133,769
Accounts receivable, net of allowances	1,064,586			962,643
Inventories	374,109			297,293
Other current assets	45,684			40,218
Total current assets	2,371,042			2,132,932
Property, plant and equipment, net	2,873,570			2,566,002
Operating lease right of use assets	144,529			147,236
Goodwill	25,392			27,325
Restricted cash	3,498			3,188
Other assets	149,748			145,628
Total assets	$	5,567,779		$	5,022,311
LIABILITIES AND EQUITY
Current liabilities:
Short-term borrowings and current portion of long-term debt	$	134,912		$	149,007
Trade accounts payable	710,326			636,434
Capital expenditures payable	460,413			181,339
Accrued expenses	374,002			349,207
Total current liabilities	1,679,653			1,315,987
Long-term debt	916,407			1,005,339
Pension and severance obligations	146,737			159,610
Long-term operating lease liabilities	78,492			84,420
Other non-current liabilities	163,420			102,996
Total liabilities	2,984,709			2,668,352

Stockholders' equity:
Preferred stock	—			—
Common stock	290			289
Additional paid-in capital	1,968,339			1,953,378
Retained earnings	788,567			562,502
Accumulated other comprehensive income (loss)	16,113			27,270
Treasury stock	(219,061		)	(217,740		)
Total Amkor stockholders' equity	2,554,248			2,325,699
Non-controlling interests in subsidiaries	28,822			28,260
Total equity	2,583,070			2,353,959
Total liabilities and equity	$	5,567,779		$	5,022,311

AMKOR TECHNOLOGY, INC. CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

	For the Six Months Ended June 30,
	2021			2020
	(In thousands)
Cash flows from operating activities:
Net income	$	246,477		$	120,637
Depreciation and amortization	274,991			248,036
Other operating activities and non-cash items	305			10,151
Changes in assets and liabilities	(65,442		)	(136,422		)
Net cash provided by operating activities	456,331			242,402
Cash flows from investing activities:
Payments for property, plant and equipment	(273,617		)	(134,340		)
Proceeds from sale of property, plant and equipment	2,249			2,389
Proceeds from sale of short-term investments	45,396			8,593
Proceeds from maturities of short-term investments	103,116			13,072
Payments for short-term investments	(173,307		)	(325,632		)
Other investing activities	(25,332		)	805
Net cash used in investing activities	(321,495		)	(435,113		)
Cash flows from financing activities:
Proceeds from revolving credit facilities	—			282,000
Payments of revolving credit facilities	—			(216,000		)
Proceeds from short-term debt	3,679			62,495
Payments of short-term debt	(10,431		)	(66,609		)
Proceeds from issuance of long-term debt	120,992			225,985
Payments of long-term debt	(184,212		)	(201,425		)
Payments of finance lease obligations	(6,633		)	(4,876		)
Payments of dividends	(29,221		)	—
Other financing activities	8,287			972
Net cash (used in) provided by financing activities	(97,539		)	82,542
Effect of exchange rate fluctuations on cash, cash equivalents and restricted cash	(10,274		)	(1,177		)
Net increase (decrease) in cash, cash equivalents and restricted cash	27,023			(111,346		)
Cash, cash equivalents and restricted cash, beginning of period	702,197			898,532
Cash, cash equivalents and restricted cash, end of period	$	729,220		$	787,186

Forward-Looking Statement Disclaimer

This press release 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, including all of the statements made under "Business Outlook" above, 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, including, but not limited to, the following:

health conditions or pandemics, such as COVID-19, impacting labor availability and operating capacity, capital availability, the supply chain and consumer demand for our customers' products and services;
dependence on the highly cyclical, volatile semiconductor industry;
industry downturns and declines in global economic and financial conditions;
fluctuation in demand for semiconductors and conditions in the semiconductor industry generally, as well as by specific customers, such as inventory reductions by our customers impacting demand in key markets;
changes in our capacity and capacity utilization rates and fluctuations in our manufacturing yields;
the development, transition and ramp to high volume manufacture of more advanced silicon nodes and evolving wafer, packaging and test services technologies may cause production delays, lower manufacturing yields and supply constraints for new wafers and other materials;
the absence of backlog, the short-term nature of our customers' commitments, double bookings by customers and deterioration in customer forecasts and the impact of these factors, including the possible delay, rescheduling and cancellation of large orders, or the timing and volume of orders relative to our production capacity;
changes in cost, quality, availability and delivery times of raw materials, components and equipment, including any disruption in the supply of certain materials due to regulations and customer requirements, as well as supply constraints, production delays, fluctuations in commodity prices and wage inflation;
dependence on key customers or concentration of customers in certain end markets, such as Communications and Automotive and Industrial;
dependence on international factories and operations and risks relating to our customers' and vendors' international operations;
laws, rules, regulations and policies imposed by U.S. or other governments, such as tariffs, customs, duties and other restrictive trade barriers, national security, data privacy and cybersecurity, antitrust and competition, tax, currency and banking, labor, environmental, health and safety;
laws, rules, regulations and policies within China and other countries that may favor domestic companies over non-domestic companies, including customer- or government-supported efforts to promote the development and growth of local competitors;
fluctuations in currency exchange rates, particularly the dollar/yen exchange rate for our operations in Japan;
competition with established competitors in the packaging and test business, the internal capabilities of integrated device manufacturers and new competitors, including foundries;
decisions by our integrated device manufacturer and foundry customers to curtail outsourcing;
difficulty achieving high capacity utilization rates due to high percentage of fixed costs;
our substantial investments in equipment and facilities to support the demand of our customers;
the historical downward pressure on the prices of our packaging and test services;
any warranty claims, product return and liability risks, and the risk of negative publicity if our products fail, as well as the risk of litigation incident to our business;
our substantial indebtedness and restrictive covenants in the indentures and agreements governing our current and future indebtedness;
the possibility that we may decrease or suspend our quarterly dividend;
difficulty funding our liquidity needs;
our significant severance plan obligations associated with our manufacturing operations in Korea;
maintaining an effective system of internal controls;
difficulty attracting, retaining or replacing qualified personnel;
our continuing development and implementation of changes to, and maintenance and security of, our information technology systems;
challenges with integrating diverse operations;
any changes in tax laws, taxing authorities not agreeing with our interpretation of applicable tax laws, including whether we continue to qualify for tax holidays, or any requirements to establish or adjust valuation allowances on deferred tax assets;
our ability to develop new proprietary technology, protect our proprietary technology, operate without infringing the proprietary rights of others and implement new technologies;
natural disasters and other calamities, political instability, hostilities or other disruptions; and
the ability of certain of our stockholders to effectively determine or substantially influence the outcome of matters requiring stockholder approval.

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 press release, 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.

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Amkor Technology Reports Financial Results for the Second Quarter 2021