TECOGEN INC NEW

Ticker: TGEN CUSIP: 87876P201 Class: COM

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

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

Q1 2020

Shares 432,599 Value ($000) $402 Avg Close $1.87 Range $0.92 - $2.49

Q4 2019

Shares 500,878 Value ($000) $1,062 Avg Close $2.39 Range $2.03 - $2.75

Q3 2019

Shares 509,066 Value ($000) $1,212 Avg Close $2.98 Range $2.11 - $3.75

Q2 2019

Shares 541,241 Value ($000) $2,030 Avg Close $3.69 Range $3.36 - $4.20

Q1 2019

Shares 496,507 Value ($000) $1,981 Avg Close $3.85 Range $3.45 - $4.15

Q4 2018

Shares 505,321 Value ($000) $1,834 Avg Close $3.53 Range $2.95 - $4.00

Q3 2018

Shares 527,486 Value ($000) $1,662 Avg Close $3.29 Range $2.94 - $3.86

Q2 2018

Shares 515,391 Value ($000) $1,917 Avg Close $3.45 Range $2.80 - $4.20

Q1 2018

Shares 94,211 Value ($000) $269 Avg Close $2.43 Range $2.05 - $3.09

Q3 2015

Shares 60,499 Value ($000) $209 Avg Close $3.94 Range $2.80 - $4.40

Q2 2015

Shares 60,499 Value ($000) $248 Avg Close $4.52 Range $3.90 - $5.19

Q1 2015

Shares 60,499 Value ($000) $307 Avg Close $5.06 Range $4.55 - $5.65

Q4 2014

Shares 60,499 Value ($000) $316 Avg Close $5.76 Range $4.59 - $7.80

Q3 2014

Shares 60,499 Value ($000) $339 Avg Close $6.04 Range $4.97 - $8.18

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2020	432,599	$402	$1.87	$0.92 - $2.49
Q4 2019	500,878	$1,062	$2.39	$2.03 - $2.75
Q3 2019	509,066	$1,212	$2.98	$2.11 - $3.75
Q2 2019	541,241	$2,030	$3.69	$3.36 - $4.20
Q1 2019	496,507	$1,981	$3.85	$3.45 - $4.15
Q4 2018	505,321	$1,834	$3.53	$2.95 - $4.00
Q3 2018	527,486	$1,662	$3.29	$2.94 - $3.86
Q2 2018	515,391	$1,917	$3.45	$2.80 - $4.20
Q1 2018	94,211	$269	$2.43	$2.05 - $3.09
Q3 2015	60,499	$209	$3.94	$2.80 - $4.40
Q2 2015	60,499	$248	$4.52	$3.90 - $5.19
Q1 2015	60,499	$307	$5.06	$4.55 - $5.65
Q4 2014	60,499	$316	$5.76	$4.59 - $7.80
Q3 2014	60,499	$339	$6.04	$4.97 - $8.18