HARVARD BIOSCIENCE INC

Ticker: HBIO CUSIP: 416906105 Class: COM

Walleye Trading LLC's Holding History (CIK: 0001388391)

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

Q1 2017

Shares 6,800 Value ($000) $18 Avg Close $2.88 Range $2.50 - $3.30

Q4 2016

Shares 8,300 Value ($000) $25 Avg Close $2.54 Range $2.25 - $3.05

Q3 2016

Shares 13,000 Value ($000) $35 Avg Close $2.78 Range $2.50 - $3.22

Q2 2016

Shares 5,200 Value ($000) $15 Avg Close $3.18 Range $2.61 - $3.90

Q1 2016

Shares 13,800 Value ($000) $42 Avg Close $2.84 Range $2.41 - $3.45

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	6,800	$18	$2.88	$2.50 - $3.30
Q4 2016	8,300	$25	$2.54	$2.25 - $3.05
Q3 2016	13,000	$35	$2.78	$2.50 - $3.22
Q2 2016	5,200	$15	$3.18	$2.61 - $3.90
Q1 2016	13,800	$42	$2.84	$2.41 - $3.45