QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

Swiss National Bank's Holding History (CIK: 0001582202)

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

Q4 2022

Shares 201,900 Value ($000) $369 Avg Close $2.58 Range $1.72 - $3.61

Q3 2022

Shares 194,500 Value ($000) $535 Avg Close $3.20 Range $2.31 - $4.43

Q2 2022

Shares 194,500 Value ($000) $451 Avg Close $3.83 Range $2.22 - $4.97

Q1 2022

Shares 194,500 Value ($000) $910 Avg Close $4.87 Range $3.72 - $8.30

Q4 2021

Shares 179,400 Value ($000) $1,412 Avg Close $7.53 Range $5.33 - $9.10

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2022	201,900	$369	$2.58	$1.72 - $3.61
Q3 2022	194,500	$535	$3.20	$2.31 - $4.43
Q2 2022	194,500	$451	$3.83	$2.22 - $4.97
Q1 2022	194,500	$910	$4.87	$3.72 - $8.30
Q4 2021	179,400	$1,412	$7.53	$5.33 - $9.10