BLACK HILLS CORP

Ticker: BKH CUSIP: 092113109 Class: COM

Joel Isaacson & Co., LLC's Holding History (CIK: 0001599330)

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

Q4 2016

Shares 16 Value ($000) $1 Avg Close $42.62 Range $38.96 - $45.02

Q3 2016

Shares 16 Value ($000) $1 Avg Close $43.19 Range $40.45 - $45.62

Q2 2016

Shares 16 Value ($000) $1 Avg Close $42.44 Range $39.39 - $44.88

Q1 2016

Shares 16 Value ($000) $1 Avg Close $37.32 Range $31.07 - $42.88

Q4 2015

Shares 16 Value ($000) $1 Avg Close $30.44 Range $27.84 - $33.06

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	16	$1	$42.62	$38.96 - $45.02
Q3 2016	16	$1	$43.19	$40.45 - $45.62
Q2 2016	16	$1	$42.44	$39.39 - $44.88
Q1 2016	16	$1	$37.32	$31.07 - $42.88
Q4 2015	16	$1	$30.44	$27.84 - $33.06