ACURA PHARMACEUTICALS INC

Ticker: ACUR CUSIP: 00509L802 Class: COM

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2016

Shares 807 Value ($000) $1 Avg Close $1.05 Range $0.71 - $1.65

Q3 2016

Shares 807 Value ($000) $1 Avg Close $1.77 Range $1.40 - $2.18

Q2 2016

Shares 807 Value ($000) $1 Avg Close $2.58 Range $1.71 - $3.52

Q1 2016

Shares 2,207 Value ($000) $6 Avg Close $2.13 Range $1.61 - $2.83

Q4 2015

Shares 2,107 Value ($000) $5 Avg Close $2.43 Range $1.62 - $2.85

Q3 2015

Shares 107 Value ($000) $0 Avg Close $3.40 Range $2.27 - $4.80

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	807	$1	$1.05	$0.71 - $1.65
Q3 2016	807	$1	$1.77	$1.40 - $2.18
Q2 2016	807	$1	$2.58	$1.71 - $3.52
Q1 2016	2,207	$6	$2.13	$1.61 - $2.83
Q4 2015	2,107	$5	$2.43	$1.62 - $2.85
Q3 2015	107	$0	$3.40	$2.27 - $4.80