XENOPORT INC

CUSIP: 98411C100 Class: CMN

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

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

Q2 2016
Shares 74,000 Value ($000) $521 Avg Close — Range —
Q1 2016
Shares 91,000 Value ($000) $410 Avg Close — Range —
Q4 2015
Shares 91,000 Value ($000) $500 Avg Close — Range —
Q3 2015
Shares 91,000 Value ($000) $316 Avg Close — Range —
Q2 2015
Shares 91,000 Value ($000) $558 Avg Close — Range —
Q1 2015
Shares 91,000 Value ($000) $648 Avg Close — Range —
Q4 2014
Shares 91,000 Value ($000) $798 Avg Close — Range —
Q3 2014
Shares 91,000 Value ($000) $490 Avg Close — Range —
Q2 2014
Shares 104,000 Value ($000) $502 Avg Close — Range —
Q1 2014
Shares 128,000 Value ($000) $662 Avg Close — Range —
Q4 2013
Shares 128,000 Value ($000) $736 Avg Close — Range —
Q3 2013
Shares 128,000 Value ($000) $727 Avg Close — Range —
Q2 2013
Shares 128,000 Value ($000) $634 Avg Close — Range —