SEMGROUP CORP

CUSIP: 81663A105 Class: CMN

MASON STREET ADVISORS, LLC's Holding History (CIK: 0001167711)

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

Q4 2014
Shares 100,000 Value ($000) $6,839 Avg Close — Range —
Q3 2014
Shares 70,000 Value ($000) $5,829 Avg Close — Range —
Q2 2014
Shares 87,398 Value ($000) $6,891 Avg Close — Range —
Q1 2014
Shares 55,900 Value ($000) $3,672 Avg Close — Range —
Q4 2013
Shares 55,900 Value ($000) $3,646 Avg Close — Range —
Q3 2013
Shares 178,100 Value ($000) $10,155 Avg Close — Range —
Q2 2013
Shares 137,100 Value ($000) $7,384 Avg Close — Range —