SIGMA LABS INC

CUSIP: 826598302 Class: COM PAR

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

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

Q4 2019
Shares 140,000 Value ($000) $137 Avg Close — Range —
Q2 2019
Shares 300,000 Value ($000) $420 Avg Close — Range —
Q1 2019
Shares 300,000 Value ($000) $504 Avg Close — Range —
Q4 2018
Shares 300,000 Value ($000) $450 Avg Close — Range —
Q3 2018
Shares 170,000 Value ($000) $196 Avg Close — Range —
Q2 2018
Shares 170,000 Value ($000) $160 Avg Close — Range —
Q1 2018
Shares 240,000 Value ($000) $365 Avg Close — Range —
Q4 2017
Shares 235,000 Value ($000) $505 Avg Close — Range —
Q3 2017
Shares 249,640 Value ($000) $469 Avg Close — Range —
Q2 2017
Shares 200,000 Value ($000) $422 Avg Close — Range —