ZENDESK INC

CUSIP: 98936J101 Class: COMMON STOCK

Calamos Advisors LLC's Holding History (CIK: 0001316507)

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

Q3 2022
Shares 52,000 Value ($000) $3,957 Avg Close — Range —
Q2 2022
Shares 52,000 Value ($000) $3,852 Avg Close — Range —
Q3 2021
Shares 59,013 Value ($000) $6,869 Avg Close — Range —
Q2 2020
Shares 179,813 Value ($000) $15,919 Avg Close — Range —
Q1 2020
Shares 267,967 Value ($000) $17,153 Avg Close — Range —
Q4 2019
Shares 215,077 Value ($000) $16,481 Avg Close — Range —
Q3 2019
Shares 215,328 Value ($000) $15,693 Avg Close — Range —
Q2 2019
Shares 178,917 Value ($000) $15,929 Avg Close — Range —
Q1 2019
Shares 232,580 Value ($000) $19,769 Avg Close — Range —
Q4 2018
Shares 231,070 Value ($000) $13,488 Avg Close — Range —
Q1 2018
Shares 553,690 Value ($000) $26,506 Avg Close — Range —
Q4 2017
Shares 1,440,327 Value ($000) $48,741 Avg Close — Range —
Q3 2017
Shares 1,645,329 Value ($000) $47,896 Avg Close — Range —
Q2 2017
Shares 1,511,983 Value ($000) $42,003 Avg Close — Range —
Q1 2017
Shares 883,532 Value ($000) $24,774 Avg Close — Range —