Net Income (Loss) per Share (Tables)

12 Months Ended

Dec. 31, 2023

Earnings Per Share [Abstract]

Reconciliation of the Numerator and Denominator used in the Calculation of the Basic and Diluted Earnings per Share

A reconciliation of the numerator and denominator used in the calculation of the basic and diluted net income (loss) attributable to Penumbra, Inc. is as follows (in thousands, except share and per share amounts):

	Year Ended December 31,
	2023		2022		2021
Numerator:
Net income (loss) attributable to Penumbra, Inc.	$	90,954	$	(2,002)	$	5,284
Denominator:
Weighted average shares used to compute net income (loss) attributable to common stockholders:
Basic	38,401,171		37,841,874		36,764,290
Potential dilutive stock-based options and awards, as calculated using treasury stock method	815,393		—		1,116,890
Diluted	39,216,564		37,841,874		37,881,180
Net income (loss) attributable to Penumbra, Inc. per share from:
Basic	$	2.37	$	(0.05)	$	0.14
Diluted	$	2.32	$	(0.05)	$	0.14