STEM INC

Ticker: STEM CUSIP: 85859N300 Class: Common Stock

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

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

Q4 2025

Shares 2,849 Value ($000) $43 Avg Close $19.16 Range $13.43 - $32.23

Q3 2025

Shares 5,309 Value ($000) $93 Avg Close $14.13 Range $6.04 - $23.00

Q2 2025

Shares 24,457 Value ($000) $152 Avg Close $8.97 Range $5.82 - $13.80

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,849	$43	$19.16	$13.43 - $32.23
Q3 2025	5,309	$93	$14.13	$6.04 - $23.00
Q2 2025	24,457	$152	$8.97	$5.82 - $13.80