ZENDESK INC

CUSIP: 98936J101 Class: COMMON STOCK

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

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

Q3 2016
Shares 90,934 Value ($000) $2,793 Avg Close — Range —
Q2 2016
Shares 119,346 Value ($000) $3,148 Avg Close — Range —
Q1 2016
Shares 15,925 Value ($000) $333 Avg Close — Range —
Q4 2015
Shares 10,453 Value ($000) $276 Avg Close — Range —
Q1 2015
Shares 19,065 Value ($000) $433 Avg Close — Range —
Q4 2014
Shares 17,889 Value ($000) $436 Avg Close — Range —
Q3 2014
Shares 14,996 Value ($000) $324 Avg Close — Range —