ONEOK PARTNERS L P UNIT LTD PARTNERSHIP

CUSIP: 68282N103 Class: COMMON

BLACKHILL CAPITAL INC's Holding History (CIK: 0000872162)

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

Q4 2014
Shares 52,800 Value ($000) $2,092 Avg Close — Range —
Q3 2014
Shares 52,800 Value ($000) $2,955 Avg Close — Range —
Q2 2014
Shares 52,800 Value ($000) $3,094 Avg Close — Range —
Q1 2014
Shares 52,800 Value ($000) $2,827 Avg Close — Range —
Q4 2013
Shares 52,933 Value ($000) $2,787 Avg Close — Range —
Q3 2013
Shares 53,800 Value ($000) $2,852 Avg Close — Range —
Q2 2013
Shares 53,800 Value ($000) $2,664 Avg Close — Range —