MRC GLOBAL INC

CUSIP: 55345K103 Class: Common Stock

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

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

Q4 2017
Shares 1,609,449 Value ($000) $27,232,000 Avg Close — Range —
Q3 2017
Shares 1,540,400 Value ($000) $26,942,000 Avg Close — Range —
Q2 2017
Shares 1,174,667 Value ($000) $19,405,000 Avg Close — Range —
Q1 2017
Shares 950,400 Value ($000) $17,421,000 Avg Close — Range —
Q4 2016
Shares 500,000 Value ($000) $10,130,000 Avg Close — Range —
Q3 2016
Shares 1,618,967 Value ($000) $26,600,000 Avg Close — Range —
Q2 2016
Shares 1,789,116 Value ($000) $25,423,000 Avg Close — Range —
Q1 2016
Shares 2,011,655 Value ($000) $26,433,000 Avg Close — Range —
Q4 2015
Shares 2,999,588 Value ($000) $38,695,000 Avg Close — Range —
Q3 2015
Shares 2,406,008 Value ($000) $26,827,000 Avg Close — Range —
Q2 2015
Shares 1,132,886 Value ($000) $17,492,000 Avg Close — Range —
Q1 2015
Shares 1,009,509 Value ($000) $11,963,000 Avg Close — Range —
Q4 2014
Shares 30,476 Value ($000) $462,000 Avg Close — Range —