Basic net loss per share of Class A common stock is computed by dividing net income attributable to the Company by the weighted-average number of shares of Class A common stock outstanding during the period, excluding unvested equity awards and subsidiary member units not exchanged. Diluted earnings per share of Class A common stock is calculated by dividing net income attributable to the Company, adjusted for the assumed exchange of all potentially dilutive securities by the weighted-average number of shares of Class A common stock outstanding.

The following table sets forth the reconciliation of the numerator used to compute basic and diluted net loss per share of Class A common stock for the three months ended March 31, 2026 and 2025.


	Three Months Ended March 31,
(in thousands)	2026			2025
Numerator:
Net loss	$	(192,354	)	$	(155,093	)
Less: Net loss attributable to noncontrolling interests		(53,733	)		(47,865	)
Net loss attributable to Definitive Healthcare Corp.	$	(138,621	)	$	(107,228	)

The following table sets forth the computation of basic and diluted net loss per share of Class A common stock for the three months ended March 31, 2026 and 2025 (per share amounts unaudited).


	Three Months Ended March 31,
(in thousands, except number of shares and per share amounts)	2026			2025
Basic and diluted net loss per share attributable to common stockholders
Numerator:
Allocation of net loss attributable to Definitive Healthcare Corp.	$	(138,621	)	$	(107,228	)
Denominator:
Weighted average number of shares of Class A common stock outstanding		104,675,068			112,782,505
Net loss per share, basic and diluted	$	(1.32	)	$	(0.95	)

Shares of the Company’s Class B common stock do not participate in the earnings or losses of the Company and are therefore not participating securities. As such, separate presentation of basic and diluted earnings per share of Class B common stock under the two-class method has not been presented.

The following table presents potentially dilutive securities excluded from the computation of diluted net loss per share for the period presented because their effect would have been anti-dilutive:


	Three Months Ended March 31,
	2026		2025
Definitive OpCo LLC Units (vested and unvested)		38,225,333		38,997,184
Restricted Stock Units		22,613,338		13,435,809