SLACK TECHNOLOGIES INC

CUSIP: 83088V102 Class: COM CL A

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

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

Q2 2021
Shares 60,246 Value ($000) $2,669 Avg Close — Range —
Q1 2021
Shares 75,304 Value ($000) $3,060 Avg Close — Range —
Q4 2020
Shares 68,113 Value ($000) $2,877 Avg Close — Range —
Q3 2020
Shares 274,151 Value ($000) $7,364 Avg Close — Range —
Q1 2020
Shares 15,890 Value ($000) $426 Avg Close — Range —
Q4 2019
Shares 39,642 Value ($000) $891 Avg Close — Range —
Q3 2019
Shares 11,177 Value ($000) $265 Avg Close — Range —