APTOSE BIOSCIENCES INC

CUSIP: 03835T200 Class: Stock

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q1 2021
Shares 664,448 Value ($000) $3,967 Avg Close — Range —
Q4 2020
Shares 103,053 Value ($000) $451 Avg Close — Range —