COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

THOMPSON DAVIS & CO., INC.'s Holding History (CIK: 0001017284)

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

Q3 2016

Shares 41 Value ($000) $9 Avg Close $21.29 Range $20.25 - $22.48

Q2 2016

Shares 42 Value ($000) $9 Avg Close $19.77 Range $17.45 - $21.88

Q1 2016

Shares 43 Value ($000) $8 Avg Close $17.71 Range $14.65 - $20.50

Q4 2015

Shares 62 Value ($000) $13 Avg Close $19.90 Range $16.80 - $21.35

Q3 2015

Shares 62 Value ($000) $11 Avg Close $19.15 Range $16.35 - $22.35

Q2 2015

Shares 25 Value ($000) $5 Avg Close $20.39 Range $19.23 - $21.67

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2016	41	$9	$21.29	$20.25 - $22.48
Q2 2016	42	$9	$19.77	$17.45 - $21.88
Q1 2016	43	$8	$17.71	$14.65 - $20.50
Q4 2015	62	$13	$19.90	$16.80 - $21.35
Q3 2015	62	$11	$19.15	$16.35 - $22.35
Q2 2015	25	$5	$20.39	$19.23 - $21.67