SIERRA ONCOLOGY INC

CUSIP: 82640U107 Class: COMMON

CIBC Private Wealth Group, LLC's Holding History (CIK: 0001298088)

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

Q1 2018
Shares 9,247 Value ($000) $19 Avg Close — Range —
Q4 2017
Shares 7,113 Value ($000) $27 Avg Close — Range —