MERSANA THERAPEUTICS INC

CUSIP: 59045L106 Class: COM

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q4 2020
Shares 29,724 Value ($000) $791 Avg Close — Range —
Q3 2020
Shares 79,866 Value ($000) $1,487 Avg Close — Range —