Stockholders' Equity and Noncontrolling Interests (Tables)

9 Months Ended

Sep. 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 September 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 June 30, 2026		2,470.4		$	2.5		(5.0)		$	(256.0)		$	4,504.4		$	11,644.9		$	(404.2)		$	121.5		$	15,613.1		$	9.0
Net income																2,034.3						20.3			2,054.6			0.1
Other comprehensive income (loss)																			28.5			1.0			29.5			(0.1)
Distributions to and purchases of noncontrolling interests																						(3.9)			(3.9)
Purchase of treasury stock							(3.0)			(244.7)															(244.7)
Retirement of treasury stock		(3.0)			—		3.0			244.7						(244.7)									—
Stock options exercised		5.2			—		0.8			45.3			66.7			(36.6)									75.4
Dividends declared ($0.125 per common share)																(308.5)									(308.5)
Stock-based compensation expense													47.0												47.0
Balance as of September 30, 2026		2,472.6		$	2.5		(4.2)		$	(210.7)		$	4,618.1		$	13,089.4		$	(375.7)		$	138.9		$	17,262.5		$	9.0

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the nine months ended September 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		2,457.9		$	2.5		(4.8)		$	(195.8)		$	4,231.6		$	9,854.3		$	(479.5)		$	87.3		$	13,500.4		$	9.3
Net income																4,736.5						45.7			4,782.2			—
Other comprehensive income (loss)																			103.8			3.5			107.3			(0.3)
Acquisitions resulting in noncontrolling interests																						6.9			6.9
Distributions to and purchases of noncontrolling interests																						(4.5)			(4.5)
Purchase of treasury stock							(8.5)			(630.6)															(630.6)
Retirement of treasury stock		(6.0)			—		6.0			452.5						(452.5)									—
Stock options exercised		20.7			—		3.1			163.2			259.9			(125.0)									298.1
Dividends declared ($0.375 per common share)																(923.9)									(923.9)
Stock-based compensation expense													126.6												126.6
Balance as of September 30, 2026		2,472.6		$	2.5		(4.2)		$	(210.7)		$	4,618.1		$	13,089.4		$	(375.7)		$	138.9		$	17,262.5		$	9.0

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the three months ended September 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 June 30, 2025		2,443.8		$	2.4		(3.7)		$	(104.9)		$	3,956.5		$	8,135.2		$	(469.9)		$	70.3		$	11,589.6		$	10.1
Net income																1,245.7						9.3			1,255.0			0.1
Other comprehensive income (loss)																			(37.8)			0.4			(37.4)			—
Distributions to shareholders of noncontrolling interests																						(3.6)			(3.6)
Purchase of treasury stock							(2.8)			(152.9)															(152.9)
Retirement of treasury stock		—			—		—			—						—									—
Stock options exercised		8.8			—		1.2			36.9			98.1			(24.0)									111.0
Dividends declared ($0.0825 per common share)																(201.9)									(201.9)
Stock-based compensation expense													36.9												36.9
Balance as of September 30, 2025		2,452.6		$	2.4		(5.3)		$	(220.9)		$	4,091.5		$	9,155.0		$	(507.7)		$	76.4		$	12,596.7		$	10.2

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the nine months ended September 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		2,425.7		$	2.4		(7.1)		$	(199.7)		$	3,600.6		$	7,105.0		$	(716.3)		$	55.4		$	9,847.4		$	8.7
Net income																3,074.8						24.9			3,099.7			0.4
Other comprehensive income (loss)																			208.6			1.6			210.2			1.1
Distributions to shareholders of noncontrolling interests																						(5.5)			(5.5)
Purchase of treasury stock							(12.2)			(493.9)															(493.9)
Retirement of treasury stock		(9.4)			—		9.4			341.0						(341.0)									—
Stock options exercised		36.3			—		4.6			131.7			396.1			(81.1)									446.7
Dividends declared ($0.2475 per common share)																(602.7)									(602.7)
Stock-based compensation expense													94.8												94.8
Balance as of September 30, 2025		2,452.6		$	2.4		(5.3)		$	(220.9)		$	4,091.5		$	9,155.0		$	(507.7)		$	76.4		$	12,596.7		$	10.2

Schedules of dividends


		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2026			2025			2026			2025
Dividends declared		$	308.5		$	201.9		$	923.9		$	602.7
Dividends paid (including those declared in the prior year)			308.0			201.2			922.0			600.3