SIERRA ONCOLOGY INC

CUSIP: 82640U107 Class: COMMON

SPHERA FUNDS MANAGEMENT LTD.'s Holding History (CIK: 0001496201)

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

Q4 2018
Shares 258,510 Value ($000) $341 Avg Close — Range —
Q3 2018
Shares 1,022,759 Value ($000) $1,739 Avg Close — Range —
Q2 2018
Shares 1,075,806 Value ($000) $3,184 Avg Close — Range —
Q1 2018
Shares 1,000,000 Value ($000) $2,070 Avg Close — Range —
Q4 2017
Shares 550,000 Value ($000) $2,052 Avg Close — Range —