ZENDESK INC

CUSIP: 98936J101 Class: COMMON STOCK

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q3 2022
Shares 9,375 Value ($000) $713 Avg Close — Range —
Q2 2022
Shares 998,009 Value ($000) $73,923 Avg Close — Range —
Q1 2022
Shares 1,773,829 Value ($000) $213,374 Avg Close — Range —
Q4 2021
Shares 1,665,189 Value ($000) $173,663 Avg Close — Range —
Q3 2021
Shares 1,903,372 Value ($000) $221,533 Avg Close — Range —
Q2 2021
Shares 2,105,757 Value ($000) $303,945 Avg Close — Range —
Q1 2021
Shares 2,179,679 Value ($000) $289,069 Avg Close — Range —
Q4 2020
Shares 2,264,009 Value ($000) $324,025 Avg Close — Range —
Q3 2020
Shares 2,464,088 Value ($000) $253,604 Avg Close — Range —
Q2 2020
Shares 1,825,925 Value ($000) $161,649 Avg Close — Range —
Q1 2020
Shares 1,729,420 Value ($000) $110,700 Avg Close — Range —
Q4 2019
Shares 1,121,783 Value ($000) $85,962 Avg Close — Range —
Q3 2019
Shares 938,686 Value ($000) $68,411 Avg Close — Range —
Q2 2019
Shares 982,224 Value ($000) $87,447 Avg Close — Range —
Q1 2019
Shares 1,148,789 Value ($000) $97,647 Avg Close — Range —
Q4 2018
Shares 1,498,026 Value ($000) $87,440 Avg Close — Range —
Q3 2018
Shares 757,013 Value ($000) $53,748 Avg Close — Range —
Q2 2018
Shares 600,023 Value ($000) $32,695 Avg Close — Range —
Q1 2018
Shares 911,770 Value ($000) $43,646 Avg Close — Range —
Q4 2017
Shares 1,023,575 Value ($000) $34,638 Avg Close — Range —
Q3 2017
Shares 894,475 Value ($000) $26,038 Avg Close — Range —
Q2 2017
Shares 1,064,475 Value ($000) $29,571 Avg Close — Range —
Q1 2017
Shares 1,031,640 Value ($000) $28,927 Avg Close — Range —
Q4 2016
Shares 1,180,635 Value ($000) $25,029 Avg Close — Range —
Q3 2016
Shares 1,003,275 Value ($000) $30,811 Avg Close — Range —
Q2 2016
Shares 1,006,245 Value ($000) $26,545 Avg Close — Range —
Q1 2016
Shares 1,008,655 Value ($000) $21,111 Avg Close — Range —
Q4 2015
Shares 769,196 Value ($000) $20,338 Avg Close — Range —
Q3 2015
Shares 754,981 Value ($000) $14,881 Avg Close — Range —
Q2 2015
Shares 783,501 Value ($000) $17,402 Avg Close — Range —
Q1 2015
Shares 221,253 Value ($000) $5,020 Avg Close — Range —