SIERRA ONCOLOGY INC

CUSIP: 82640U107 Class: COMMON

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q3 2019
Shares 16,919 Value ($000) $7 Avg Close — Range —
Q2 2019
Shares 29,319 Value ($000) $16 Avg Close — Range —
Q1 2019
Shares 29,319 Value ($000) $50 Avg Close — Range —
Q4 2018
Shares 16,919 Value ($000) $22 Avg Close — Range —
Q3 2018
Shares 16,919 Value ($000) $29 Avg Close — Range —
Q2 2018
Shares 55,714 Value ($000) $165 Avg Close — Range —
Q1 2018
Shares 55,714 Value ($000) $115 Avg Close — Range —
Q4 2017
Shares 45,948 Value ($000) $171 Avg Close — Range —
Q3 2017
Shares 45,948 Value ($000) $71 Avg Close — Range —
Q2 2017
Shares 45,948 Value ($000) $54 Avg Close — Range —
Q1 2017
Shares 45,948 Value ($000) $70 Avg Close — Range —
Q4 2016
Shares 45,948 Value ($000) $68 Avg Close — Range —