BLACK HILLS CORP

CUSIP: 092113125 Class: UNIT 99/99/9999

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AM's Holding History (CIK: 0001132716)

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

Q1 2016
Shares 200,000 Value ($000) $13,610,000 Avg Close — Range —
Q4 2015
Shares 825,000 Value ($000) $45,663,000 Avg Close — Range —