COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

SECURITY NATIONAL BANK OF SO DAK's Holding History (CIK: 0001105909)

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

Q3 2021

Shares 2,660 Value ($000) $229 Avg Close $86.44 Range $80.00 - $90.85

Q1 2021

Shares 270 Value ($000) $222 Avg Close $86.33 Range $74.31 - $95.28

Q4 2020

Shares 270 Value ($000) $250 Avg Close $87.68 Range $78.10 - $95.12

Q3 2020

Shares 276 Value ($000) $234 Avg Close $79.70 Range $66.20 - $93.90

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2021	2,660	$229	$86.44	$80.00 - $90.85
Q1 2021	270	$222	$86.33	$74.31 - $95.28
Q4 2020	270	$250	$87.68	$78.10 - $95.12
Q3 2020	276	$234	$79.70	$66.20 - $93.90