#1Investor Presentation ++ 101 DE “በ Amphenol Enabling the Electronics Revolution September 2021#2Disclosures Forward Looking Statements This presentation contains statements that are intended to be “forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements, other than statements of historical facts, included in this presentation that address activities, events or developments that the Company expects or anticipates will or may occur in the future are forward-looking statements. These statements are based on certain assumptions and analyses made by the Company in light of its experience and its perception of historical trends, current conditions and expected future developments, as well as other factors it believes are appropriate under the circumstances. Forward-looking statements may be identified through the use of terms such as “expect,” “may,” “will,” “should,” “intend,” “plan,” “guidance," "outlook" and/or other similar expressions generally intended to identify forward-looking statements. Such forward-looking statements are not guarantees of future performance and involve risks and uncertainties, and actual results may differ materially from those projected in the forward-looking statements. Factors that might cause or contribute to a material difference include, but are not limited to, risks and uncertainties associated with the COVID-19 pandemic; uncertainties associated with a protracted economic slowdown; uncertainties and volatility in the global capital markets; and other governmental, political, economic, public health, end-market, competitive, technological, acquisition-related, cybersecurity, government contracting, intellectual property, changes in fiscal or tax policies, litigation and foreign currency-related risk factors that may affect the Company's operations, products, markets, suppliers, customers and prices. Details regarding various significant risks and uncertainties that may affect our operating and financial performance can be found in the Company's Annual Report on Form 10-K, Quarterly Reports on Form 10-Q and other Company filings with the Securities and Exchange Commission including Current Reports on Form 8-K. Forward-looking statements set forth in this presentation speak only as of the date of this presentation and the Company does not undertake any obligation to revise or update these statements whether as a result of new information, future events or otherwise, except as required by law. Non-GAAP Financial Measures The balances included within this presentation are prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). This presentation also contains certain non-GAAP financial information, including Adjusted Operating Margin and Adjusted Diluted EPS (collectively, "non-GAAP financial measures"), which are intended to supplement the reported GAAP results. Management believes that such non-GAAP financial measures may be helpful to investors in assessing the Company's overall financial performance, trends and period-over-period comparative results. The non-GAAP financial measures are defined within the Company's Annual Report on Form 10-K and should be read in conjunction with the Company's financial statements presented in accordance with GAAP. 2 Amphenol#3Amphenol: Enabling Electronics Everywhere 2020 Sales By Market Leading provider of high-technology interconnect, antenna and sensor solutions Industrial Commercial 22% Military 12% Aerospace 3% $8.6B Sales Broadband 4% Mobile Networks 6% IT Datacom 21% Automotive 17% Mobile Devices 15% 19.2% Adjusted Operating Margins By Geography $1.87 Adjusted Diluted EPS* $1.3B Free Cash Flow 3 Based on 2020 year-end financial data. EPS reflects Mar 4, 2021 stock split. North America 33% Asia 46% Europe 18% ROW 3% ~80,000 employees worldwide Broad Global Capabilities Amphenol#4Delivering superior performance in an uncertain environment 4 Prioritizing safety and health amidst COVID-19 pandemic Committed to protecting our employees around the world Quick recovery • Proud of our organization's accomplishments in a difficult environment Focused on customers Quickly reacting to changing needs of wide array of customers helping in the fight against COVID-19 Diversity and agility driving performance Combination of end-market diversification and organizational agility driving out-performance Continued flexible and balanced capital allocation strategy Increased dividend by 16%, repurchased 12 million split-adjusted shares in 2020, active M&A pipeline Strong balance sheet . Excellent liquidity including more than $1.7 billion in cash at the end of 2020 Amphenol#5Revenue LO 5 89-Year History of Innovation and Success $8B Foundation $6B 1932: Arthur Schmitt founds American Phenolic Corp. in Chicago, Illinois $4B $2B BUNKER RAMO Privately Owned Subsidiary 1942: Company incorporated as Amphenol 1957: Amphenol Electronics Corporation lists on the NYSE 1967: Amphenol purchased by Bunker Ramo Allied's Amphenol To Be Sold to LPL 1981: Bunker Ramo purchased by Allied 1987: LPL Investment buys Amphenol APH Publicly Listed on NYSE KKR Investment (1997-2004) 1991: APH IPOs on the NYSE 1932 1960 1970 1980 1990 2000 2010 2016: APH celebrates 25 years on the NYSE "Driving Value Through Innovation" FEBRUARY Amphenol LEDNESDAY APH LISTED NYSE 2020 Amphenol#6Delivering Long-Term Industry-Leading Results 10-year Sales CAGR 9% $7,011 $6,286 $5,569 $5,346 $4,615 $4,292 $3,940 $3,554 6 10-year EPS CAGR 11% $8,599 $8,202 $8,225 $1.36 $1.21 $1.12 $0.96 $0.87 $0.76 $0.67 $1.56 $1.88 $1.87 $1.87 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Sales in $M • • Adjusted Diluted EPS Industry-leading growth and operating margin for over a decade High-quality of earnings • Strong cash flow generation in all business cycles Flexible and balanced capital deployment strategy CAGR calculated from 2010-2020. EPS reflects stock splits. Amphenol#77 $0 $10 $20 $30 $40 $80 Superior Shareholder Returns Through All Cycles $50 $70 $60 20-year CAGR 18% 2001 2002 2003 2004- 2005 2006 2007- Bloomberg share price data, which reflects stock splits. CAGR calculated from 6/30/2001 to 6/30/2021. 2008 2009 Share Price Performance 2010 2011- 2012 2013- 2014 2015- 2016- 2017- 2018 2019 2020 2021 6/30/21 Amphenol#8Consistent High-Performance Strategy 8 Complementary Acquisitions Technology Diversity Global Low Cost Entrepreneurial Organization Strength through all cycles Mobile Networks Mobile Devices IT / Datacom Broadband Auto Industrial Military/Aerospace Amphenol#9Enabling the Electronics Revolution 9 Clean and Efficient • Environmentally friendly More power efficient Connected and Mobile . Always on Available anywhere High speed . 5G capable and beyond Increased bandwidth Harsh environment Ruggedized Extreme vibration, temperature, pressure Increased complexity Multiple connections Next-generation applications Amphenol#10Balanced and Broad Market Position Longer-cycle markets Military 12% Commercial Aerospace 3% Industrial 22% Our high-technology solutions enable electronics in every industry Broadband 4% Mobile Networks 6% No market >22% of sales in 2020 10 Based on 2020 financial data IT Datacom 21% Automotive 17% Mobile Devices 15% End-market diversification provides: Less volatility Broad technology visibility Proliferation of our know-how Shorter-cycle markets Amphenol#11Leading Interconnect Technologies Extending the reach of the interconnect system Connectors 8888 0000000 Antennas Sensors Core pillars of technology innovation Harsh Environment High Speed 11 Flex PCB Cables Value-add Power Sensors Radio Frequency Fiber Optics Amphenol#12Disciplined Acquisition Program Creating Consistent Value Management . Technology • Acquirer of choice Successful acquisition program in a fragmented but consolidating industry Focused on high-quality management teams with complementary technology Target acquisitions to account for approximately one-third of growth Approximately 50 companies acquired in the last 10 years • Market Position FEP CEMM THOME Tel-Ad Electronics Ltd. HOLLAND Electronics LLC NELSON DUNN GRIFFITH Deutgen Kunststofftechnik 2011 12 GE Advanced Sensors Group TECVOX connecting via innovation ionix Systems JET DCELECTRONICS 2012 2013 FCI SUNPOOL Invotec 金事达电气有限公司 Gold-Star Electric Systems Co.,ltd CASCO 2014 PROCOM LOTUTE DOCHARM 2015 AUXELFTG SGX SENSORTECH ALL SYSTEMS BROADBAND CUSTOMCABLE AN MFLIGHTWAVE COMPANY 2016 PHITEK 12s Telect CTI Global Wilcoxon Piezo Technologies PIHER systems SENSING TECHNOLOGIES 2017 sensing CTI Industries ARDENT CONCEPTS An Amphenol Company ALL SENSORS 2018 SSI Charles CONEC TECHNOLOGY IN CONNECTORS. BERND connections for life GJM XGIGA Aorora Cablescan MAKING THE CONNECTION KOPEK INDUSTRIES 2019 Acquisition program helps support robust sales growth on anon Innovate Design Manufacture EXATHERMOMETRICS EXACTING TEMPERATURE SENSING 2020 UNLIMITED SERVICES CABELCON connectors EUROMICRON MTS EC El Cab Positronic 2021 Amphenol#13Unique Entrepreneurial Culture 13 HQ Operating Groups General Managers Empowered and Accountable Agile Accountable Passionate Talented Amphenol#14Creating Sustained Long-Term Value 14 • Unique entrepreneurial culture • High-performance culture Agile, empowered and accountable Balanced market diversification No market more than 22% of sales Ideal balance of long- and short-cycle markets Global presence and reach . Sales in ~70 countries across 6 continents Technology solutions positioned for secular growth • Enabling the Electronics Revolution Disciplined acquisition strategy Acquirer of choice and long-term value creator Our long-term goals Grow sales faster than our markets Deliver strong contribution margin + Strong free cash flow for reinvestment Responsible corporate citizen • Committed to sustainable business practices Sustained Value Creation Amphenol#15101 ++ DE Amphenol Enabling the Electronics Revolution “በ