GRITSTONE BIO INC

CUSIP: 39868T105 Class: Common Stock

PFM Health Sciences, LP's Holding History (CIK: 0001442756)

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

Q1 2019
Shares 374,656 Value ($000) $4,983 Avg Close — Range —
Q4 2018
Shares 1,005,613 Value ($000) $14,280 Avg Close — Range —
Q3 2018
Shares 1,065,313 Value ($000) $14,257 Avg Close — Range —