Stockholders' Equity and Noncontrolling Interests (Tables)

3 Months Ended

Mar. 31, 2024

Stockholders' Equity and Noncontrolling Interests

Rollforward of consolidated changes in equity

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the three months ended March 31, 2024 is as follows:

	Stockholders’ equity attributable to Amphenol Corporation
											Accumulated						Redeemable
	Common Stock			Treasury Stock			Additional				Other		Non-				Non-
	Shares			Shares			Paid-In		Retained		Comprehensive		controlling		Total		controlling
	(in millions)	Amount		(in millions)	Amount		Capital		Earnings		Loss		Interests (1)		Equity		Interests
Balance as of December 31, 2023	600.6	$	0.6	(1.7)	$	(142.8)	$	3,101.2	$	5,921.1	$	(533.6)	$	49.3	$	8,395.8	$	30.7
Net income										548.7				2.9		551.6		0.4
Other comprehensive income (loss)												(69.3)		(0.8)		(70.1)		(0.2)
Capital contributions from noncontrolling interests														0.8		0.8
Purchase of treasury stock				(1.4)		(153.8)										(153.8)
Retirement of treasury stock	(1.4)		—	1.4		153.8				(153.8)						—
Stock options exercised	2.8		—	0.4		39.0		99.1		(20.4)						117.7
Dividends declared ($0.22 per common share)										(132.1)						(132.1)
Stock-based compensation expense								23.8								23.8
Balance as of March 31, 2024	602.0	$	0.6	(1.3)	$	(103.8)	$	3,224.1	$	6,163.5	$	(602.9)	$	52.2	$	8,733.7	$	30.9

(1) Excludes redeemable noncontrolling interests.

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the three months ended March 31, 2023 is as follows:

	Stockholders’ equity attributable to Amphenol Corporation
											Accumulated						Redeemable
	Common Stock			Treasury Stock			Additional				Other		Non-				Non-
	Shares			Shares			Paid-In		Retained		Comprehensive		controlling		Total		controlling
	(in millions)	Amount		(in millions)	Amount		Capital		Earnings		Loss		Interests (1)		Equity		Interests
Balance as of December 31, 2022	596.0	$	0.6	(1.2)	$	(79.8)	$	2,650.4	$	4,979.4	$	(535.0)	$	57.9	$	7,073.5	$	20.6
Net income										439.2				3.2		442.4		0.3
Other comprehensive income (loss)												42.4		0.8		43.2		—
Acquisitions resulting in noncontrolling interests														0.8		0.8
Distributions to shareholders of noncontrolling interests														(5.2)		(5.2)
Purchase of treasury stock				(2.1)		(166.9)										(166.9)
Retirement of treasury stock	(2.1)		—	2.1		166.9				(166.9)						—
Stock options exercised	2.4		—	0.2		10.1		76.4		(5.4)						81.1
Dividends declared ($0.21 per common share)										(125.0)						(125.0)
Stock-based compensation expense								21.7								21.7
Balance as of March 31, 2023	596.3	$	0.6	(1.0)	$	(69.7)	$	2,748.5	$	5,121.3	$	(492.6)	$	57.5	$	7,365.6	$	20.9

(1) Excludes redeemable noncontrolling interests.

Schedules of dividends

	Three Months Ended March 31,
	2024		2023
Dividends declared	$	132.1	$	125.0
Dividends paid (including those declared in the prior year)		131.7		124.9