MERSANA THERAPEUTICS INC

CUSIP: 59045L106 Class: COM

Spark Investment Management LLC's Holding History (CIK: 0001554871)

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

Q2 2019
Shares 107,072 Value ($000) $433 Avg Close — Range —
Q1 2019
Shares 52,800 Value ($000) $277 Avg Close — Range —
Q4 2018
Shares 49,200 Value ($000) $200 Avg Close — Range —
Q1 2018
Shares 24,929 Value ($000) $393 Avg Close — Range —
Q4 2017
Shares 13,000 Value ($000) $213 Avg Close — Range —
Q3 2017
Shares 18,688 Value ($000) $323 Avg Close — Range —