The following table sets forth the computation of basic and diluted weighted average shares outstanding and associated net (loss) income per common share attributable to Bruker Corporation common shareholders (in millions, except per share amounts):


	Three Months Ended June 30,					Six Months Ended June 30,
	2026			2025		2026			2025
Net (loss) income attributable to Bruker Corporation	$	(52.0	)	$	7.6	$	(37.6	)	$	25.0
Dividends on Series A Mandatory Convertible Preferred Stock		10.9			—		21.8			—
Net (loss) income attributable to Bruker Corporation common shareholders	$	(62.9	)	$	7.6	$	(59.4	)	$	25.0

Weighted average common shares outstanding:
Weighted average common shares outstanding - basic		152.3			151.6		152.2			151.6
Effect of dilutive securities:
Stock options, restricted stock units, and employee stock purchase plan		—			0.1		—			0.2
Series A Mandatory Convertible Preferred Stock		—			—		—			—
Weighted average common shares outstanding - diluted		152.3			151.7		152.2			151.8
Net (loss) income per common share attributable to Bruker Corporation common shareholders:
Basic	$	(0.41	)	$	0.05	$	(0.39	)	$	0.16
Diluted	$	(0.41	)	$	0.05	$	(0.39	)	$	0.16

The methodology used to determine the earnings per common share attributable to Bruker Corporation common shareholders is consistent with that described in Note 2, Summary of Significant Accounting Policies to the consolidated financial statements included in the 2025 Form 10-K. As the Company reported a net loss for the three and six months ended June 30, 2026, diluted and basic net loss per common share for those periods is the same because all potentially dilutive shares are antidilutive in a net loss position.

The following common share equivalents have been excluded from the computation of diluted weighted average common shares outstanding, as their effect would have been anti-dilutive (amounts in millions of shares):


	Three Months Ended June 30,				Six Months Ended June 30,
	2026		2025		2026		2025
Stock options, restricted stock units, and employee stock purchase plan		1.0		1.1		1.5		1.0
Series A Mandatory Convertible Preferred Stock		19.2		—		19.2		—