CHAMPIONX CORPORATION

CUSIP: 15872M104 Class: Common Stock

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

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

Q2 2022
Shares 78 Value ($000) $2 Avg Close — Range —
Q1 2022
Shares 78 Value ($000) $2 Avg Close — Range —
Q4 2021
Shares 78 Value ($000) $2 Avg Close — Range —
Q3 2021
Shares 78 Value ($000) $2 Avg Close — Range —
Q2 2021
Shares 78 Value ($000) $2 Avg Close — Range —
Q1 2021
Shares 78 Value ($000) $2 Avg Close — Range —
Q4 2020
Shares 78 Value ($000) $1 Avg Close — Range —
Q3 2020
Shares 78 Value ($000) $1 Avg Close — Range —
Q2 2020
Shares 78 Value ($000) $1 Avg Close — Range —