Stockholders' Equity and Noncontrolling Interests

9 Months Ended

Sep. 30, 2025

Stockholders' Equity and Noncontrolling Interests

Stockholders' Equity and Noncontrolling Interests

Note 7—Stockholders’ Equity and Noncontrolling Interests

Net income attributable to noncontrolling interests is classified below net income. Earnings per share is determined after the impact of the noncontrolling interests’ share in net income of the Company. In addition, the equity attributable to noncontrolling interests is presented as a separate caption within equity.

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 (1)		Equity		Interests
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
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				(1.4)		(152.9)										(152.9)
Retirement of treasury stock	—		—	—		—				—						—
Stock options exercised	4.4		—	0.6		36.9		98.1		(24.0)						111.0
Dividends declared ($0.165 per common share)										(201.9)						(201.9)
Stock-based compensation expense								36.9								36.9
Balance as of September 30, 2025	1,226.4	$	1.2	(2.7)	$	(220.9)	$	4,092.7	$	9,155.0	$	(507.7)	$	76.4	$	12,596.7	$	10.2

(1) Excludes redeemable noncontrolling interests.

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 (1)		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										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				(6.1)		(493.9)										(493.9)
Retirement of treasury stock	(4.7)		—	4.7		341.0				(341.0)						—
Stock options exercised	18.2		—	2.3		131.7		396.1		(81.1)						446.7
Dividends declared ($0.495 per common share)										(602.7)						(602.7)
Stock-based compensation expense								94.8								94.8
Balance as of September 30, 2025	1,226.4	$	1.2	(2.7)	$	(220.9)	$	4,092.7	$	9,155.0	$	(507.7)	$	76.4	$	12,596.7	$	10.2

(1)Excludes redeemable noncontrolling interests.

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the three months ended September 30, 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 June 30, 2024	1,205.6	$	1.2	(1.8)	$	(73.8)	$	3,349.2	$	6,352.0	$	(648.5)	$	50.5	$	9,030.6	$	19.9
Net income										604.4				4.1		608.5		0.4
Other comprehensive income (loss)												128.6		1.7		130.3		0.4
Capital contributions from noncontrolling interests														0.4		0.4
Purchase of noncontrolling interest								(0.2)						(0.1)		(0.3)		—
Distributions to shareholders of noncontrolling interests														(3.0)		(3.0)
Purchase of treasury stock				(2.7)		(176.2)										(176.2)
Retirement of treasury stock	—		—	—		—				—						—
Stock options exercised	3.9		—	0.3		13.1		79.1		(7.0)						85.2
Dividends declared ($0.165 per common share)										(198.9)						(198.9)
Stock-based compensation expense								29.5								29.5
Balance as of September 30, 2024	1,209.5	$	1.2	(4.2)	$	(236.9)	$	3,457.6	$	6,750.5	$	(519.9)	$	53.6	$	9,506.1	$	20.7

(1) Excludes redeemable noncontrolling interests.

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the nine months ended September 30, 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	1,201.3	$	1.2	(3.5)	$	(142.8)	$	3,100.6	$	5,921.1	$	(533.6)	$	49.3	$	8,395.8	$	30.7
Net income										1,677.8				10.7		1,688.5		1.1
Other comprehensive income (loss)												13.7		0.6		14.3		0.1
Capital contributions from noncontrolling interests														1.5		1.5
Purchase of noncontrolling interest								(1.1)						(0.1)		(1.2)		(11.2)
Distributions to shareholders of noncontrolling interests														(8.4)		(8.4)
Purchase of treasury stock				(8.6)		(520.4)										(520.4)
Retirement of treasury stock	(5.9)		—	5.9		344.2				(344.2)						—
Stock options exercised	14.1		—	2.0		82.1		278.2		(40.8)						319.5
Dividends declared ($0.385 per common share)										(463.4)						(463.4)
Stock-based compensation expense								79.9								79.9
Balance as of September 30, 2024	1,209.5	$	1.2	(4.2)	$	(236.9)	$	3,457.6	$	6,750.5	$	(519.9)	$	53.6	$	9,506.1	$	20.7

(1) Excludes redeemable noncontrolling interests.

Authorized Shares for Issuance

On May 15, 2025, the Company’s stockholders approved an amendment to the Company’s Restated Certificate of Incorporation, which increased the total number of shares of Class A Common Stock, par value $0.001 per share (“Common Stock”), that the Company is authorized to issue to 5,000,000,000 shares, an increase of 3,000,000,000 shares from the amount previously authorized. The amendment was filed and became effective on May 15, 2025.

Stock Repurchase Programs

On April 23, 2024, the Board authorized a stock repurchase program under which the Company may purchase up to $2,000.0 of its Common Stock during the three-year period ending on the close of business on April 28, 2027 (the “2024 Stock Repurchase Program”). The 2024 Stock Repurchase Program became effective on April 29, 2024. During the three and nine months ended September 30, 2025, the Company repurchased 1.4 million and 6.1 million shares of its Common Stock for $152.9 and $493.9, respectively, under the 2024 Stock Repurchase Program. Of the total repurchases made during the nine months ended September 30, 2025 under the 2024 Stock Repurchase Program, 4.7 million shares, or $341.0, have been retired by the Company, with the remainder of the repurchased shares retained in Treasury stock at the time of repurchase. From October 1, 2025 to October 21, 2025, the Company repurchased 0.3 million additional shares of its Common Stock for $39.5, and, as of October 21, 2025, the Company has remaining authorization to purchase up to $1,002.9 of its Common Stock under the 2024 Stock Repurchase Program. The timing and amount of any future repurchases will depend on a number of factors, such as the levels of cash generation from operations, the volume of stock options exercised by employees, cash requirements for acquisitions, dividends paid, economic and market conditions and the price of the Common Stock.

Dividends

Contingent upon declaration by the Board, the Company pays a quarterly dividend on shares of its Common Stock. On July 23, 2024, the Board approved an increase to the Company’s quarterly dividend rate from $0.11 per share to $0.165 per share, effective with dividends declared in the third quarter of 2024, and on October 21, 2025, the Board approved an additional increase to the Company’s quarterly dividend rate from $0.165 per share to $0.25 per share, effective with dividends declared in the fourth quarter of 2025, contingent upon declaration by the Board. The following table summarizes the dividends declared and paid during the three and nine months ended September 30, 2025 and 2024:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2025		2024		2025		2024
Dividends declared	$	201.9	$	198.9	$	602.7	$	463.4
Dividends paid (including those declared in the prior year)		201.2		132.4		600.3		396.2