PFENEX INC

CUSIP: 717071104 Class: COM

OBERWEIS ASSET MANAGEMENT INC/'s Holding History (CIK: 0000937886)

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

Q2 2020
Shares 45,200 Value ($000) $377 Avg Close — Range —
Q1 2020
Shares 45,200 Value ($000) $399 Avg Close — Range —
Q4 2019
Shares 45,200 Value ($000) $496 Avg Close — Range —