Sigma Labs Inc

CUSIP: 826598104 Class: COM

Kovack Advisors, Inc.'s Holding History (CIK: 0001728321)

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

Q4 2015
Shares 18,000 Value ($000) $1 Avg Close — Range —
Q3 2015
Shares 18,000 Value ($000) $2 Avg Close — Range —
Q2 2015
Shares 18,000 Value ($000) $1 Avg Close — Range —
Q3 2014
Shares 43,000 Value ($000) $5 Avg Close — Range —
Q2 2014
Shares 43,000 Value ($000) $5 Avg Close — Range —