#1Investor Presentation 101 ++ 9 DE K መበ Amphenol Enabling the Electronics Revolution November 2023#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, 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 2022 Sales By Market Leading provider of high-technology interconnect, antenna and sensor solutions Commercial Aerospace Military 9% Broadband 3% Industrial 25% $12.6B Sales 20.7% Adjusted Operating Margin $3.00 Adjusted Diluted EPS $1.8B Free Cash Flow 3 Based on 2022 financial data Automotive 21% 5% Mobile Networks 5% IT Datacom 21% Mobile Devices 11% By Geography Asia North America 37% 42% Europe 18% ROW 3% ~90,000 employees worldwide Broad Global Capabilities Amphenol#4Delivering superior performance in an uncertain environment 4 Quick reactivity Proud of our organization's accomplishments in a constantly changing environment Focused on customers Quickly reacting to support customers in changing supply chain and inflationary environment 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 5% and repurchased 5.8 million shares year-to-date in 2023; active M&A pipeline Strong balance sheet Excellent liquidity and leverage including more than $1.7 billion in cash as of September 30, 2023 Amphenol#5Revenue More than 90-Year History of Innovation and Success $12B $10B $8B Foundation $6B 1932: Arthur Schmitt founds American Phenolic Corp. in Chicago, Illinois BUNKER RAMO 1942: Company $4B $2B Privately Owned Subsidiary 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 2013: APH enters sensor market with GE Advanced Sensors acquisition APH USTED NYSE Amphenol APH LISTED NYSE 2021: APH celebrates 30 years on the NYSE 1932 1960 1970 1980 1990 2000 2010 LO 5 2023 Amphenol#6Delivering Long-Term Industry-Leading Results 6 10-year Sales CAGR 10% $6,286 $5,569 $5,346 $4,615 $7,011 2013 2014 2015 2016 2017 $12,623 $12,347 10-year EPS CAGR 12% $3.00 $2.95 $10,876 $8,599 $8,202 $8,225 الأسس الاسر 2018 Sales in $M • • 2019 2020 2021 2022 2023E 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023E 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 2013 to 2023E. EPS reflects stock splits. 2023E represents midpoint of guidance Amphenol#77 $10 $0 60 $90 Superior Shareholder Returns Through All Cycles $60 $50 $40 $30 $20 $80 $70 20-year CAGR 18% 2002 2003 2004 2005 2006 2007 2008 2009 Bloomberg share price data, which reflects stock splits. CAGR calculated from 9/30/2003 to 9/30/2023. 2010 2011 2012 2013- Share Price Performance 2014- 2015- 2016- 2017- 2018 2019 - 2020 2021 2022 2023 9/30/23 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 Enabling Artificial Intelligence (AI) Harsh environment Ruggedized Extreme vibration, temperature, pressure Increased complexity Multiple connections Next-generation applications Amphenol#10Balanced and Broad Market Position Longer-cycle markets 3 1000 Our high-technology solutions. enable electronics in every industry No market >25% of sales in 2022 10 Based on 2022 financial data Commercial Aerospace 3% Industrial 25% Military 9% Broadband 5% Mobile Networks Automotive 21% 5% IT Datacom Mobile Devices 11% 21% 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 888 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 • Market Position GE Advanced Sensors Group TECVOX connecting via innovation. ionix Systems JET 12 DCELECTRONICS. 2013 Invotec 金事达电气有限公司 Gold-Star Electric Systems Co.,ltd CASCO 2014 PROCOM ID 东辰 DOCHARM 2015 • 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 FCI AUXELIFTG SGX SENSORTECH ALL SYSTEMS BROADBAND CUSTOMCABLE 2016 AN MFLIGHTWAVE COMPANY SUNPOOL PHITEK (i2s Telect CTI Industries CTI Global Wilcoxon SENSING TECHNOLOGIES Piezo Technologies sensing PIHER systems 2017 FCharles CONEC SST More than 50 companies acquired in the last 10 years ARDENT CONCEPTS An Amphenol Company TECHNOLOGY IN CONNECTORS.. BERND connections for life GJM XGIGA Aorora Cablescan MAKING THE CONNECTION KOPEK INDUSTRIES on anon Innovate Design Manufacture US Q Halo UNLIMITED SERVICES CABELCON connectors EUROMICRON M MTS EC El Cab ALL SENSORS 2018 2019 EXATHERMOMETRICS EXACTING TEMPERATURE SENSING 2020 Positronic 2021 8 Acquisition program helps support robust sales growth NTEGRATMB CABLE ICA HOLDINGS, INC NPI 2022 CONNOR MANUFACTURING Q Microwave XMA Omni Spectra' EBY RFS Technologies C-M-R GROUP 2023 Amphenol#13Committed to Sustainable Business Practices Operating sustainably is not just the right thing to do, it is simply good business Corporate Governance . Committed to sound corporate governance policies • • Of our 9 Directors: 8 are independent, 3 are women, 2 identify as racially diverse and one identifies as LGBTQ+ Diversity and Inclusion Global diversity of our workforce is a key pillar of our success Inclusive working environment where all employees are respected and treated equitably Message is emphasized from the top down to each of our employees Men 73% Core Management Group Women 27% Global Workforce North America 26% • Our global workforce reflects the regions in which we operate Environmental During 2022, achieved all 8 of our Sustainability Goals announced in 2019 and added 8 new short-term goals Greenhouse Gas Emissions Reduced our revenue-normalized Scope 1 and Scope 2 emissions by 19%, above our goal to reduce by 10% New goal: by 2025, will reduce our revenue-normalized Scope 1 and Scope 2 GHG emissions by 15% vs. 2021 levels Water Use Reduced our water withdrawal intensity by 34% over 5 years Have set absolute water targets for our 20 highest process water intensive facilities Waste Disposal • Reusing, recycling or recovering 64% of our total waste 13 Based on 2022 data Asia Europe 57% 16% ROW 2% Amphenol#14Unique Entrepreneurial Culture 14 HQ 3 Divisions Operating Groups General Managers Empowered and Accountable Agile Accountable Passionate Talented Amphenol#15Creating Sustained Long-Term Value 15 • Unique entrepreneurial culture • High-performance culture Agile, empowered and accountable Balanced market diversification No market more than 25% 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#169 101 ++ DE K Amphenol Enabling the Electronics Revolution መበ