Mark R. Lanning - May 5, 2021 Form 4 Insider Report for AtriCure, Inc. (ATRC)

Role: Director
Signature: /s/ Mark R. Lanning
Stock symbol: ATRC
Transactions as of: May 5, 2021
Transactions value $: $141,700
Form type: 4
Date filed: 5/7/2021, 08:07 AM

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ATRC	Common Stock	Options Exercise	$142K	+10K	+7.64%	$14.17	141K	May 5, 2021	Direct
holding	ATRC	Common Stock						1.8K	May 5, 2021	Held by spouse	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ATRC	Stock Option (Right to Buy)	Options Exercise	$0	-10K	-100%	$0.00^*	0	May 5, 2021	Common Stock	10K	$14.17	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The Reporting Person disclaims beneficial ownership of these securities, except as to his pecuniary interest therein.
F2	These options were granted on May 18, 2011 and are exercisable cumulatively at a rate of 33% per annum beginning one year from date of grant.