TANDEM DIABETES CARE INC

CUSIP: 875372104 Class: COM

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

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

Q3 2017
Shares 30,451 Value ($000) $22 Avg Close — Range —
Q2 2017
Shares 30,451 Value ($000) $24 Avg Close — Range —
Q1 2017
Shares 154,167 Value ($000) $185 Avg Close — Range —
Q1 2015
Shares 200 Value ($000) $3 Avg Close — Range —
Q3 2014
Shares 8,100 Value ($000) $109 Avg Close — Range —