SIERRA ONCOLOGY INC

CUSIP: 82640U107 Class: COMMON

COMERICA BANK's Holding History (CIK: 0000901541)

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

Q4 2019
Shares 23,972 Value ($000) $8 Avg Close — Range —
Q3 2019
Shares 23,972 Value ($000) $7 Avg Close — Range —
Q2 2019
Shares 23,972 Value ($000) $13 Avg Close — Range —
Q1 2019
Shares 23,972 Value ($000) $37 Avg Close — Range —
Q4 2018
Shares 23,972 Value ($000) $32 Avg Close — Range —
Q3 2018
Shares 23,972 Value ($000) $42 Avg Close — Range —
Q2 2018
Shares 23,972 Value ($000) $70 Avg Close — Range —