QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

Private Advisor Group, LLC's Holding History (CIK: 0001567755)

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

Q4 2021

Shares 23,385 Value ($000) $184 Avg Close $7.53 Range $5.33 - $9.10

Q3 2021

Shares 40,520 Value ($000) $338 Avg Close $9.85 Range $7.43 - $14.17

Q2 2021

Shares 16,375 Value ($000) $201 Avg Close $10.48 Range $7.85 - $13.23

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	23,385	$184	$7.53	$5.33 - $9.10
Q3 2021	40,520	$338	$9.85	$7.43 - $14.17
Q2 2021	16,375	$201	$10.48	$7.85 - $13.23