BIOLIFE SOLUTIONS INC

Ticker: BLFS CUSIP: 09062W204 Class: Common Stock

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

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

Q4 2020

Shares 122,855 Value ($000) $4,901 Avg Close $34.10 Range $26.58 - $47.22

Q3 2020

Shares 145,135 Value ($000) $4,200 Avg Close $21.60 Range $15.64 - $29.49

Q2 2020

Shares 140,369 Value ($000) $2,295 Avg Close $13.79 Range $8.83 - $17.34

Q1 2020

Shares 141,053 Value ($000) $1,340 Avg Close $13.73 Range $7.37 - $18.05

Q4 2019

Shares 211,782 Value ($000) $3,427 Avg Close $16.26 Range $13.78 - $19.14

Q3 2019

Shares 201,839 Value ($000) $3,356 Avg Close $18.77 Range $15.52 - $21.18

Q2 2019

Shares 224,623 Value ($000) $3,807 Avg Close $17.44 Range $15.06 - $20.00

Q1 2019

Shares 301,682 Value ($000) $5,397 Avg Close $15.91 Range $10.90 - $22.44

Q4 2018

Shares 308,185 Value ($000) $3,707 Avg Close $11.94 Range $9.15 - $18.20

Q3 2018

Shares 275,397 Value ($000) $4,819 Avg Close $19.78 Range $12.77 - $26.35

Q2 2018

Shares 295,728 Value ($000) $3,374 Avg Close $9.10 Range $5.49 - $13.99

Q1 2018

Shares 228,546 Value ($000) $1,172 Avg Close $5.41 Range $4.63 - $6.21

Q4 2017

Shares 254,096 Value ($000) $1,525 Avg Close $5.76 Range $4.88 - $7.53

Q3 2017

Shares 84,755 Value ($000) $484 Avg Close $4.15 Range $2.40 - $5.91

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2020	122,855	$4,901	$34.10	$26.58 - $47.22
Q3 2020	145,135	$4,200	$21.60	$15.64 - $29.49
Q2 2020	140,369	$2,295	$13.79	$8.83 - $17.34
Q1 2020	141,053	$1,340	$13.73	$7.37 - $18.05
Q4 2019	211,782	$3,427	$16.26	$13.78 - $19.14
Q3 2019	201,839	$3,356	$18.77	$15.52 - $21.18
Q2 2019	224,623	$3,807	$17.44	$15.06 - $20.00
Q1 2019	301,682	$5,397	$15.91	$10.90 - $22.44
Q4 2018	308,185	$3,707	$11.94	$9.15 - $18.20
Q3 2018	275,397	$4,819	$19.78	$12.77 - $26.35
Q2 2018	295,728	$3,374	$9.10	$5.49 - $13.99
Q1 2018	228,546	$1,172	$5.41	$4.63 - $6.21
Q4 2017	254,096	$1,525	$5.76	$4.88 - $7.53
Q3 2017	84,755	$484	$4.15	$2.40 - $5.91