PROTEOSTASIS THERAPEUTICS IN

CUSIP: 74373B109 Class: COM

BRIDGEWAY CAPITAL MANAGEMENT, LLC's Holding History (CIK: 0001107261)

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

Q3 2020
Shares 270,000 Value ($000) $297 Avg Close — Range —
Q2 2020
Shares 320,000 Value ($000) $438 Avg Close — Range —
Q1 2020
Shares 120,000 Value ($000) $137 Avg Close — Range —
Q4 2019
Shares 120,000 Value ($000) $274 Avg Close — Range —
Q3 2019
Shares 120,000 Value ($000) $101 Avg Close — Range —
Q1 2019
Shares 80,000 Value ($000) $101 Avg Close — Range —
Q4 2018
Shares 80,000 Value ($000) $259 Avg Close — Range —
Q3 2018
Shares 138,845 Value ($000) $335 Avg Close — Range —
Q2 2018
Shares 138,845 Value ($000) $387 Avg Close — Range —
Q1 2018
Shares 138,845 Value ($000) $660 Avg Close — Range —
Q4 2017
Shares 139,500 Value ($000) $813 Avg Close — Range —
Q3 2017
Shares 109,500 Value ($000) $230 Avg Close — Range —
Q2 2017
Shares 59,500 Value ($000) $278 Avg Close — Range —