MERSANA THERAPEUTICS INC

CUSIP: 59045L106 Class: COM

AMERICAN CENTURY COMPANIES INC's Holding History (CIK: 0000748054)

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

Q3 2018
Shares 11,266 Value ($000) $113 Avg Close — Range —
Q2 2018
Shares 43,477 Value ($000) $776 Avg Close — Range —