SIGMA LABS INC

CUSIP: 826598500 Class: COM

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q2 2023
Shares 934 Value ($000) $0 Avg Close — Range —
Q1 2023
Shares 934 Value ($000) $0 Avg Close — Range —
Q4 2022
Shares 5,434 Value ($000) $2 Avg Close — Range —
Q3 2022
Shares 5,434 Value ($000) $4 Avg Close — Range —
Q2 2022
Shares 3,749 Value ($000) $5 Avg Close — Range —
Q1 2022
Shares 12,549 Value ($000) $26 Avg Close — Range —