PRONAI THERAPEUTICS INC

CUSIP: 74346L101 Class: COM

BAKER BROS. ADVISORS LP's Holding History (CIK: 0001263508)

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

Q4 2016
Shares 200,000 Value ($000) $298 Avg Close — Range —
Q3 2016
Shares 200,000 Value ($000) $364 Avg Close — Range —
Q2 2016
Shares 200,000 Value ($000) $398 Avg Close — Range —
Q1 2016
Shares 200,000 Value ($000) $1,348 Avg Close — Range —
Q4 2015
Shares 200,000 Value ($000) $3,008 Avg Close — Range —
Q3 2015
Shares 200,000 Value ($000) $4,104 Avg Close — Range —