SIERRA ONCOLOGY INC

CUSIP: 82640U107 Class: COMMON

Tower Research Capital LLC (TRC)'s Holding History (CIK: 0001533421)

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

Q1 2019
Shares 5,838 Value ($000) $10 Avg Close — Range —
Q3 2018
Shares 5,159 Value ($000) $9 Avg Close — Range —
Q2 2018
Shares 9,137 Value ($000) $27 Avg Close — Range —
Q1 2018
Shares 3,888 Value ($000) $8 Avg Close — Range —
Q4 2017
Shares 1,360 Value ($000) $5 Avg Close — Range —
Q1 2017
Shares 1,606 Value ($000) $2 Avg Close — Range —