REX ENERGY CORPORATION

CUSIP: 761565100 Class: CMN

PRIMECAP MANAGEMENT CO/CA/'s Holding History (CIK: 0000763212)

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

Q1 2017
Shares 3,425,000 Value ($000) $1,608 Avg Close — Range —
Q4 2016
Shares 3,275,000 Value ($000) $1,543 Avg Close — Range —
Q3 2016
Shares 3,645,000 Value ($000) $2,128 Avg Close — Range —
Q2 2016
Shares 3,645,000 Value ($000) $2,408 Avg Close — Range —
Q1 2016
Shares 3,645,000 Value ($000) $2,807 Avg Close — Range —
Q4 2015
Shares 3,645,000 Value ($000) $3,827 Avg Close — Range —
Q3 2015
Shares 3,645,000 Value ($000) $7,545 Avg Close — Range —
Q2 2015
Shares 2,497,000 Value ($000) $13,958 Avg Close — Range —
Q1 2015
Shares 2,497,000 Value ($000) $9,289 Avg Close — Range —
Q4 2014
Shares 2,437,000 Value ($000) $12,429 Avg Close — Range —
Q3 2014
Shares 2,135,000 Value ($000) $27,050 Avg Close — Range —
Q2 2014
Shares 1,945,000 Value ($000) $34,446 Avg Close — Range —
Q1 2014
Shares 1,905,000 Value ($000) $35,643 Avg Close — Range —
Q4 2013
Shares 1,900,000 Value ($000) $37,449 Avg Close — Range —
Q3 2013
Shares 1,875,000 Value ($000) $41,850 Avg Close — Range —
Q2 2013
Shares 1,201,500 Value ($000) $21,122 Avg Close — Range —