INSTRUCTURE INC

CUSIP: 45781U103 Class: COM

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

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

Q1 2019
Shares 4,399 Value ($000) $207 Avg Close — Range —
Q4 2018
Shares 287 Value ($000) $11 Avg Close — Range —
Q3 2018
Shares 709 Value ($000) $25 Avg Close — Range —