QUANTUM COMPUTING INC

Ticker: QUBT CUSIP: 74766W108 Class: Common Stock

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q4 2025

Shares 230,221 Value ($000) $2,362 Avg Close $14.23 Range $9.50 - $25.84

Q3 2025

Shares 136,155 Value ($000) $2,507 Avg Close $17.16 Range $13.72 - $23.98

Q2 2025

Shares 126,323 Value ($000) $2,422 Avg Close $11.02 Range $5.76 - $21.73

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	230,221	$2,362	$14.23	$9.50 - $25.84
Q3 2025	136,155	$2,507	$17.16	$13.72 - $23.98
Q2 2025	126,323	$2,422	$11.02	$5.76 - $21.73