MERSANA THERAPEUTICS INC

CUSIP: 59045L106 Class: COM

CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM's Holding History (CIK: 0000919079)

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

Q1 2021
Shares 108,200 Value ($000) $1,751 Avg Close — Range —
Q4 2020
Shares 121,117 Value ($000) $3,223 Avg Close — Range —
Q3 2020
Shares 123,417 Value ($000) $2,298 Avg Close — Range —
Q2 2020
Shares 102,703 Value ($000) $2,403 Avg Close — Range —
Q1 2020
Shares 25,700 Value ($000) $150 Avg Close — Range —
Q4 2019
Shares 25,700 Value ($000) $147 Avg Close — Range —