SEC Form 4 · Updated Daily

ATRC

— ATRICURE, INC. Ownership

Insider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.

Financials Ownership

Current Reporting Owners

Owner	Role	Shares Owned	As Of	Last Activity
Connors Timothy J	10%+ Owner	2,286,924	2006-08-10	X
Donoghue Daniel J	10%+ Owner	1,621,334	2012-12-17	S
Discovery Group I, LLC	10%+ Owner	1,621,334	2012-12-17	S
Murphy Michael R	10%+ Owner	1,621,334	2012-12-17	S
KRAUSZ STEVEN M	Director	1,502,444	2012-06-13	J
YOUNG PHILIP M	10%+ Owner	1,502,444	2012-06-13	J
ROOT JONATHAN D	10%+ Owner	1,502,444	2012-06-13	J
LIDDLE DAVID E	10%+ Owner	1,502,444	2012-06-13	J
FEDERMAN IRWIN	10%+ Owner	1,502,444	2012-06-13	J
Tansey Casey M	10%+ Owner	1,502,444	2012-06-13	J
PRESIDIO MANAGEMENT GROUP VIII L L C	10%+ Owner	1,502,444	2012-06-13	J
US VENTURE PARTNERS VIII L P	10%+ Owner	1,502,444	2012-06-13	J
FU WINSTON S	10%+ Owner	1,502,444	2012-06-13	J
USVP VIII AFFILIATES FUND L P	10%+ Owner	1,502,444	2012-06-13	J
Rust Christopher J	10%+ Owner	1,502,444	2012-06-13	J
USVP ENTREPRENEUR PARTNERS VIII A L P	10%+ Owner	1,502,444	2012-06-13	J
USVP ENTREPRENEUR PARTNERS VIII B L P	10%+ Owner	1,502,444	2012-06-13	J
CARREL MICHAEL H	Director · Officer	778,434	2026-07-30	G
BERKELEY RICHARD M	Reporting Owner	677,593	2013-07-11	S
CAMDEN PARTNERS STRATEGIC II LLC	Reporting Owner	605,420	2013-09-12	S
CAMDEN PARTNERS STRATEGIC FUND II B LP	Reporting Owner	605,420	2013-09-12	S
HUGHES DONALD W	Reporting Owner	605,420	2013-09-12	S
WARNOCK DAVID L	Reporting Owner	605,420	2013-09-12	S
CAMDEN PARTNERS STRATEGIC FUND II A LP	Reporting Owner	605,420	2013-09-12	S
ROBARDS KAREN P	Director	318,328	2016-12-19	G
Wrubel Lee R	Director	311,932	2008-05-16	S
Seith Douglas J	Officer	229,867	2026-06-30	A
Wirick Angela L	Officer	227,858	2026-03-01	A
HARRISON DONALD C	Director	210,056	2011-02-23	M
Drachman David J	Director · Officer	166,000	2012-09-12	M
Privitera Salvatore	Officer	142,745	2026-09-23	S
Lanning Mark R	Director	140,886	2021-05-05	M
Wade M. Andrew	Officer	140,537	2020-06-30	A
WHITE ROBERT S.	Director	128,318	2026-05-18	A
Collar Mark A	Director	100,871	2023-03-13	M
Noznesky Justin J	Officer	100,219	2026-07-29	S
Piton Julie A	Officer	96,510	2012-02-17	F
Dahlquist Karl S.	Officer	87,319	2026-08-24	S
Doraiswamy Vinayak	Officer	86,511	2026-07-28	S
Drake Scott William	Director	79,677	2021-05-07	M
Lucky James L	Officer	77,893	2013-03-05	M
Hooven Michael D	Director	67,049	2017-05-05	M
LUX ANDREW L	Officer	66,549	2017-06-30	A
WEHRWEIN SVEN	Director	65,518	2026-07-28	M
Kennedy Patricia J	Officer	63,124	2015-10-27	F
Yount Deborah Lee	Officer	57,539	2025-03-01	A
JOHNSON B KRISTINE	Director	55,954	2026-05-18	A
Strong Stewart W	Officer	43,098	2012-02-09	F
GROVES REGINA E	Director	34,546	2026-09-11	S
Krell Elizabeth D	Director	29,967	2018-05-07	M
Telman Deborah H	Director	28,328	2026-05-18	A
Morley Deborah L	Officer	27,879	2009-07-29	A
Nachman Shlomo	Director	24,655	2026-05-18	A
Prange Karen	Director	22,809	2026-08-05	S
Preiss Frederick	Officer	22,162	2012-02-09	F
Sherman Jon A	Officer	18,335	2009-05-10	F
Austin Tonya	Officer	17,621	2022-05-13	S
Yuen Maggie	Director	14,015	2026-08-05	S
Florin Daniel P	Director	10,103	2021-05-20	A
JOHNSTON RICHARD M	Director	5,805	2017-05-24	A
KAGANOV ALAN L	Director	3,947	2006-08-23	M

Recent Filings

Date	Owner	Activity	Shares	Price	Owned After
2026-09-23	Privitera Salvatore	Open-market sale	4,519	$60.00	142,745
2026-09-11	GROVES REGINA E	Open-market sale	5,313	$54.22	34,546
2026-09-08	Privitera Salvatore	Open-market sale	3,657	$55.00	147,264
2026-09-02	Privitera Salvatore	Open-market sale	7,763	$52.50	150,921
2026-08-24	Dahlquist Karl S.	Open-market sale	9,370	$48.89	87,319
2026-08-05	Yuen Maggie	Open-market sale	3,500	$38.42	14,015
2026-08-05	Prange Karen	Open-market sale	3,564	$38.80	22,809
2026-07-30	CARREL MICHAEL H	Gift	4,000	$0.00	774,434
2026-07-30	CARREL MICHAEL H	Gift	700	$0.00	778,434
2026-07-29	Noznesky Justin J	Open-market sale	6,182	$38.80	100,219
2026-07-28	WEHRWEIN SVEN	Option exercise (derivative)	25,000	$0.00	0
2026-07-28	WEHRWEIN SVEN	Open-market sale	25,000	$37.84	40,518
2026-07-28	WEHRWEIN SVEN	Option exercise	25,000	$19.95	65,518
2026-07-28	Doraiswamy Vinayak	Open-market sale	6,000	$38.88	86,511
2026-06-30	Privitera Salvatore	Grant / award	636	$23.78	158,684
2026-06-30	Seith Douglas J	Grant / award	527	$23.78	229,867
2026-06-30	Dahlquist Karl S.	Grant / award	636	$23.78	96,689
2026-06-30	Doraiswamy Vinayak	Grant / award	636	$23.78	92,511
2026-06-30	CARREL MICHAEL H	Grant / award	636	$23.78	779,134
2026-05-20	Prange Karen	Open-market sale	3,000	$28.65	26,373
2026-05-18	WHITE ROBERT S.	Grant / award	6,144	$0.00	128,318
2026-05-18	WEHRWEIN SVEN	Grant / award	6,144	$0.00	40,518
2026-05-18	GROVES REGINA E	Grant / award	6,144	$0.00	39,859
2026-05-18	JOHNSON B KRISTINE	Grant / award	6,144	$0.00	55,954
2026-05-18	Nachman Shlomo	Grant / award	6,144	$0.00	24,655
2026-05-18	Yuen Maggie	Grant / award	6,144	$0.00	17,515
2026-05-18	Telman Deborah H	Grant / award	6,144	$0.00	28,328
2026-05-18	Prange Karen	Grant / award	6,144	$0.00	29,373
2026-05-15	Doraiswamy Vinayak	Open-market sale	5,000	$28.13	91,875
2026-03-12	Doraiswamy Vinayak	Open-market sale	5,000	$29.83	96,875
2026-03-10	WHITE ROBERT S.	Option exercise (derivative)	10,000	$14.99	0
2026-03-10	WHITE ROBERT S.	Option exercise	10,000	$14.99	122,174
2026-03-06	CARREL MICHAEL H	Gift	1,000	$0.00	778,498
2026-03-06	CARREL MICHAEL H	Gift	5,000	$0.00	779,498
2026-03-01	Dahlquist Karl S.	Tax withholding	15,687	$31.26	96,053
2026-03-01	Dahlquist Karl S.	Grant / award	15,198	$0.00	111,740
2026-03-01	Dahlquist Karl S.	Grant / award	27,991	$0.00	96,542
2026-03-01	Seith Douglas J	Tax withholding	22,948	$31.26	229,340
2026-03-01	Seith Douglas J	Grant / award	25,532	$0.00	252,288
2026-03-01	Seith Douglas J	Grant / award	42,386	$0.00	226,756

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.