DOLBY LABORATORIES INC

Ticker: DLB CUSIP: 25659T107 Class: Common Stock

Pinnacle Bancorp, Inc.'s Holding History (CIK: 0001703383)

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

Q4 2021

Shares 127 Value ($000) $12 Avg Close $83.62 Range $77.77 - $90.31

Q3 2021

Shares 127 Value ($000) $11 Avg Close $90.36 Range $81.92 - $97.28

Q2 2021

Shares 127 Value ($000) $12 Avg Close $91.87 Range $85.53 - $97.29

Q1 2021

Shares 127 Value ($000) $13 Avg Close $88.73 Range $79.75 - $94.31

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	127	$12	$83.62	$77.77 - $90.31
Q3 2021	127	$11	$90.36	$81.92 - $97.28
Q2 2021	127	$12	$91.87	$85.53 - $97.29
Q1 2021	127	$13	$88.73	$79.75 - $94.31