ATRICURE INC

Ticker: ATRC CUSIP: 04963C209 Class: Common Stock

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

Note: Option positions (PUT/CALL) are excluded.

Q3 2023

Shares 52,907 Value ($000) $2,317 Avg Close $48.78 Range $40.84 - $59.61

Q2 2023

Shares 53,279 Value ($000) $2,630 Avg Close $46.09 Range $39.03 - $50.85

Q1 2023

Shares 45,436 Value ($000) $1,883 Avg Close $41.50 Range $35.20 - $47.85

Q1 2018

Shares 130,754 Value ($000) $2,683 Avg Close $18.06 Range $14.88 - $21.21

Q4 2017

Shares 145,258 Value ($000) $2,650 Avg Close $19.80 Range $16.18 - $23.73

Q3 2017

Shares 141,798 Value ($000) $3,172 Avg Close $22.61 Range $19.85 - $25.18

Q2 2017

Shares 142,774 Value ($000) $3,462 Avg Close $21.26 Range $18.33 - $24.85

Q1 2017

Shares 119,189 Value ($000) $2,282 Avg Close $17.52 Range $14.78 - $19.79

Q4 2016

Shares 108,928 Value ($000) $2,132 Avg Close $18.12 Range $15.15 - $20.40

Q3 2016

Shares 74,408 Value ($000) $1,177 Avg Close $15.37 Range $13.45 - $17.27

Q2 2016

Shares 79,076 Value ($000) $1,117 Avg Close $15.24 Range $13.44 - $18.03

Q1 2016

Shares 72,258 Value ($000) $1,216 Avg Close $17.59 Range $14.85 - $22.42

Q4 2015

Shares 79,438 Value ($000) $1,783 Avg Close $20.61 Range $17.46 - $23.24

Q3 2015

Shares 83,352 Value ($000) $1,826 Avg Close $24.99 Range $19.14 - $28.15

Q2 2015

Shares 108,807 Value ($000) $2,681 Avg Close $22.33 Range $19.90 - $25.36

Q1 2015

Shares 109,110 Value ($000) $2,236 Avg Close $19.37 Range $17.22 - $22.97

Q4 2014

Shares 105,789 Value ($000) $2,112 Avg Close $17.16 Range $13.19 - $20.09

Q3 2014

Shares 123,115 Value ($000) $1,812 Avg Close $15.93 Range $14.28 - $18.66

Q2 2014

Shares 129,588 Value ($000) $2,382 Avg Close $16.64 Range $13.80 - $19.67

Q1 2014

Shares 150,566 Value ($000) $2,832 Avg Close $20.49 Range $17.57 - $23.00

Q4 2013

Shares 87,875 Value ($000) $1,642 Avg Close $14.54 Range $11.00 - $19.11

Q3 2013

Shares 83,030 Value ($000) $912 Avg Close $9.86 Range $8.48 - $11.25

Q2 2013

Shares 90,411 Value ($000) $859 Avg Close $8.71 Range $7.48 - $9.75

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2023	52,907	$2,317	$48.78	$40.84 - $59.61
Q2 2023	53,279	$2,630	$46.09	$39.03 - $50.85
Q1 2023	45,436	$1,883	$41.50	$35.20 - $47.85
Q1 2018	130,754	$2,683	$18.06	$14.88 - $21.21
Q4 2017	145,258	$2,650	$19.80	$16.18 - $23.73
Q3 2017	141,798	$3,172	$22.61	$19.85 - $25.18
Q2 2017	142,774	$3,462	$21.26	$18.33 - $24.85
Q1 2017	119,189	$2,282	$17.52	$14.78 - $19.79
Q4 2016	108,928	$2,132	$18.12	$15.15 - $20.40
Q3 2016	74,408	$1,177	$15.37	$13.45 - $17.27
Q2 2016	79,076	$1,117	$15.24	$13.44 - $18.03
Q1 2016	72,258	$1,216	$17.59	$14.85 - $22.42
Q4 2015	79,438	$1,783	$20.61	$17.46 - $23.24
Q3 2015	83,352	$1,826	$24.99	$19.14 - $28.15
Q2 2015	108,807	$2,681	$22.33	$19.90 - $25.36
Q1 2015	109,110	$2,236	$19.37	$17.22 - $22.97
Q4 2014	105,789	$2,112	$17.16	$13.19 - $20.09
Q3 2014	123,115	$1,812	$15.93	$14.28 - $18.66
Q2 2014	129,588	$2,382	$16.64	$13.80 - $19.67
Q1 2014	150,566	$2,832	$20.49	$17.57 - $23.00
Q4 2013	87,875	$1,642	$14.54	$11.00 - $19.11
Q3 2013	83,030	$912	$9.86	$8.48 - $11.25
Q2 2013	90,411	$859	$8.71	$7.48 - $9.75