(1)

Operating income, net income and net income per common share includes acquisition-related expenses of $16.5 ($13.2 after-tax, or $0.04 per diluted share) primarily comprised of amortization related to the value associated with acquired backlog from the SSI acquisition, along with external transaction costs. Net income and net income per common share also includes excess tax benefits related to stock-based compensation of $6.8 ($0.02 per diluted share). These items had the aggregate effect of decreasing Operating income, Net income, Net income attributable to Amphenol Corporation, and Net income per common share-Diluted by $16.5, $6.4, $6.4, and $0.02 per share, respectively, for the three months ended March 31, 2019.

(2)

Operating income, net income and net income per common share includes acquisition-related expenses of $8.9 ($7.8 after-tax, or $0.03 per diluted share) primarily related to external transaction costs, as well as amortization related to the value associated with acquired backlog from an acquisition closed in the second quarter of 2019. Net income and net income per common share also includes excess tax benefits related to stock-based compensation of $12.9 ($0.04 per diluted share). These items had the aggregate effect of decreasing Operating income by $8.9, while increasing Net income, Net income attributable to Amphenol Corporation, and Net income per common share-Diluted by $5.1, $5.1, and $0.01 per share, respectively, for the three months ended June 30, 2019.

(3)

Net income and net income per common share includes the excess tax benefits related to stock-based compensation of $1.6 ($0.01 per diluted share) and the refinancing-related costs associated with the early extinguishment of debt of $14.3 ($12.5 after-tax, or $0.04 per diluted share). These items had the aggregate effect of decreasing Net income, Net income attributable to Amphenol Corporation, and Net income per common share-Diluted by $10.9, $10.9, and $0.03 per share, respectively, for the three months ended September 30, 2019.

(4)

Net income and net income per common share includes the excess tax benefits related to stock-based compensation of $16.8. The excess tax benefits had the effect of increasing Net income, Net income attributable to Amphenol Corporation, and Net income per common share-Diluted by $16.8, $16.8, and $0.05 per share, respectively, for the three months ended December 31, 2019.

(5)

Net income and net income per common share includes excess tax benefits related to stock-based compensation of $4.1. The excess tax benefits had the effect of increasing Net income, Net income attributable to Amphenol Corporation, and Net income per common share-Diluted by $4.1, $4.1, and $0.01 per share, respectively, for the three months ended March 31, 2018.

(6)

Net income and net income per common share includes excess tax benefits related to stock-based compensation of $3.0. The excess tax benefits had the effect of increasing Net income, Net income attributable to Amphenol Corporation, and Net income per common share-Diluted by $3.0, $3.0, and $0.01 per share, respectively, for the three months ended June 30, 2018.

(7)

Net income and net income per common share includes excess tax benefits related to stock-based compensation of $7.0. The excess tax benefits had the effect of increasing Net income, Net income attributable to Amphenol Corporation, and Net income per common share-Diluted by $7.0, $7.0, and $0.02 per share, respectively, for the three months ended September 30, 2018.

(8)

Operating income, net income and net income per common share includes acquisition-related expenses of $8.5 ($7.2 after-tax, or $0.02 per diluted share) primarily related to external transaction costs. Net income and net income per common share also includes an income tax benefit of $14.5 ($0.04 per diluted share) recorded in 2018 related to the completion of its accounting for the provisional Tax Act Charge from 2017 resulting from the enactment of the Tax Cuts and Jobs Act, and the excess tax benefits related to stock-based compensation of $5.7 ($0.02 per diluted share). These items had the aggregate effect of decreasing Operating income by $8.5, while increasing Net income, Net income attributable to Amphenol Corporation, and Net income per common share-Diluted by $13.0, $13.0, and $0.04 per share, respectively, for the three months ended December 31, 2018.