DEXCOM INC

CUSIP: 25213110 Class: COM

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q1 2016
Shares 161,519 Value ($000) $10,969 Avg Close — Range —
Q4 2015
Shares 454,633 Value ($000) $37,234 Avg Close — Range —
Q3 2015
Shares 336,808 Value ($000) $26,938 Avg Close — Range —
Q2 2015
Shares 336,808 Value ($000) $26,938 Avg Close — Range —
Q1 2015
Shares 124,175 Value ($000) $7,741 Avg Close — Range —
Q4 2014
Shares 5,143 Value ($000) $283 Avg Close — Range —
Q3 2014
Shares 253,713 Value ($000) $10,146 Avg Close — Range —
Q2 2014
Shares 517,834 Value ($000) $20,537 Avg Close — Range —
Q1 2014
Shares 896,987 Value ($000) $37,099 Avg Close — Range —
Q4 2013
Shares 308,941 Value ($000) $10,940 Avg Close — Range —
Q3 2013
Shares 13,520 Value ($000) $382 Avg Close — Range —