Stockholders' Equity and Noncontrolling Interests (Tables)

6 Months Ended

Jun. 30, 2026

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 June 30, 2026 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		Equity		Interests
Balance as of March 31, 2026	1,232.2	$	1.2	(2.9)	$	(310.0)	$	4,347.4	$	10,432.1	$	(493.9)	$	105.6	$	14,082.4	$	9.1
Net income										1,769.2				15.0		1,784.2		(0.1)
Other comprehensive income (loss)												89.7		1.5		91.2		—
Distributions to and purchases of noncontrolling interests														(0.6)		(0.6)
Purchase of treasury stock				(1.5)		(208.0)										(208.0)
Retirement of treasury stock	(1.5)		—	1.5		208.0				(208.0)						—
Stock options exercised	4.4		—	0.4		54.0		112.9		(40.4)						126.5
Dividends declared ($0.25 per common share)										(308.0)						(308.0)
Stock-based compensation expense								45.4								45.4
Balance as of June 30, 2026	1,235.1	$	1.2	(2.5)	$	(256.0)	$	4,505.7	$	11,644.9	$	(404.2)	$	121.5	$	15,613.1	$	9.0

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the six months ended June 30, 2026 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		Equity		Interests
Balance as of December 31, 2025	1,228.9	$	1.2	(2.4)	$	(195.8)	$	4,232.9	$	9,854.3	$	(479.5)	$	87.3	$	13,500.4	$	9.3
Net income										2,702.2				25.4		2,727.6		(0.1)
Other comprehensive income (loss)												75.3		2.5		77.8		(0.2)
Acquisitions resulting in noncontrolling interests														6.9		6.9
Distributions to and purchases of noncontrolling interests														(0.6)		(0.6)
Purchase of treasury stock				(2.8)		(386.0)										(386.0)
Retirement of treasury stock	(1.5)		—	1.5		208.0				(208.0)						—
Stock options exercised	7.7		—	1.2		117.8		193.2		(88.3)						222.7
Dividends declared ($0.50 per common share)										(615.3)						(615.3)
Stock-based compensation expense								79.6								79.6
Balance as of June 30, 2026	1,235.1	$	1.2	(2.5)	$	(256.0)	$	4,505.7	$	11,644.9	$	(404.2)	$	121.5	$	15,613.1	$	9.0

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the three months ended June 30, 2025 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		Equity		Interests
Balance as of March 31, 2025	1,212.4	$	1.2	(3.1)	$	(174.0)	$	3,672.2	$	7,445.9	$	(644.1)	$	61.9	$	10,363.1	$	9.3
Net income										1,091.3				9.5		1,100.8		—
Other comprehensive income (loss)												174.2		0.8		175.0		0.8
Distributions to shareholders of noncontrolling interests														(1.9)		(1.9)
Purchase of treasury stock				(2.0)		(160.1)										(160.1)
Retirement of treasury stock	(2.0)		—	2.0		160.1				(160.1)						—
Stock options exercised	11.6		—	1.2		69.1		254.2		(40.7)						282.6
Dividends declared ($0.165 per common share)										(201.2)						(201.2)
Stock-based compensation expense								31.3								31.3
Balance as of June 30, 2025	1,222.0	$	1.2	(1.9)	$	(104.9)	$	3,957.7	$	8,135.2	$	(469.9)	$	70.3	$	11,589.6	$	10.1

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the six months ended June 30, 2025 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		Equity		Interests
Balance as of December 31, 2024	1,212.9	$	1.2	(3.6)	$	(199.7)	$	3,601.8	$	7,105.0	$	(716.3)	$	55.4	$	9,847.4	$	8.7
Net income										1,829.1				15.6		1,844.7		0.3
Other comprehensive income (loss)												246.4		1.2		247.6		1.1
Distributions to shareholders of noncontrolling interests														(1.9)		(1.9)
Purchase of treasury stock				(4.7)		(341.0)										(341.0)
Retirement of treasury stock	(4.7)		—	4.7		341.0				(341.0)						—
Stock options exercised	13.8		—	1.7		94.8		298.0		(57.1)						335.7
Dividends declared ($0.33 per common share)										(400.8)						(400.8)
Stock-based compensation expense								57.9								57.9
Balance as of June 30, 2025	1,222.0	$	1.2	(1.9)	$	(104.9)	$	3,957.7	$	8,135.2	$	(469.9)	$	70.3	$	11,589.6	$	10.1

Schedules of dividends

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2026		2025		2026		2025
Dividends declared	$	308.0	$	201.2	$	615.3	$	400.8
Dividends paid (including those declared in the prior year)		307.4		199.6		614.0		399.1