DOMINION MIDSTREAM PARTNERS

CUSIP: 257454108 Class: COM UT REP LTD

CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT's Holding History (CIK: 0001329375)

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

Q3 2018
Shares 295,377 Value ($000) $5,287 Avg Close — Range —
Q1 2018
Shares 723,007 Value ($000) $11,098 Avg Close — Range —
Q4 2017
Shares 1,536,436 Value ($000) $46,784 Avg Close — Range —
Q3 2017
Shares 1,582,127 Value ($000) $50,628 Avg Close — Range —
Q2 2017
Shares 1,476,690 Value ($000) $42,603 Avg Close — Range —
Q1 2017
Shares 1,634,069 Value ($000) $52,209 Avg Close — Range —
Q4 2016
Shares 1,538,540 Value ($000) $45,464 Avg Close — Range —
Q3 2016
Shares 719,779 Value ($000) $17,210 Avg Close — Range —
Q2 2016
Shares 788,476 Value ($000) $22,179 Avg Close — Range —
Q1 2016
Shares 817,633 Value ($000) $27,595 Avg Close — Range —
Q4 2015
Shares 802,455 Value ($000) $24,604 Avg Close — Range —
Q3 2015
Shares 752,040 Value ($000) $20,193 Avg Close — Range —
Q2 2015
Shares 736,910 Value ($000) $28,231 Avg Close — Range —
Q1 2015
Shares 728,180 Value ($000) $30,227 Avg Close — Range —
Q4 2014
Shares 700,155 Value ($000) $27,446 Avg Close — Range —