SIGMA LABS INC

CUSIP: 826598112 Class: *W

PERRITT CAPITAL MANAGEMENT INC's Holding History (CIK: 0001279342)

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

Q3 2017
Shares 80,000 Value ($000) $42 Avg Close — Range —
Q2 2017
Shares 80,000 Value ($000) $73 Avg Close — Range —