COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

GREAT WEST LIFE ASSURANCE CO /CAN/'s Holding History (CIK: 0001046192)

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

Q4 2025

Shares 236,960 Value ($000) $16 Avg Close $70.84 Range $62.00 - $85.24

Q3 2025

Shares 430,259 Value ($000) $36 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 409,701 Value ($000) $33 Avg Close $77.90 Range $71.21 - $83.68

Q1 2025

Shares 389,913 Value ($000) $31 Avg Close $76.08 Range $68.41 - $83.03

Q4 2024

Shares 388,780 Value ($000) $28 Avg Close $75.52 Range $68.26 - $82.49

Q3 2024

Shares 368,042 Value ($000) $28 Avg Close $75.84 Range $70.86 - $81.63

Q2 2024

Shares 353,847 Value ($000) $26 Avg Close $84.75 Range $71.90 - $96.98

Q1 2024

Shares 305,531 Value ($000) $30 Avg Close $86.08 Range $79.82 - $100.38

Q4 2023

Shares 297,630 Value ($000) $26 Avg Close $80.94 Range $67.35 - $89.11

Q3 2023

Shares 280,432 Value ($000) $22 Avg Close $82.85 Range $75.78 - $92.30

Q2 2023

Shares 302,911 Value ($000) $27 Avg Close $77.21 Range $67.22 - $92.36

Q1 2023

Shares 262,898 Value ($000) $18 Avg Close $73.79 Range $65.12 - $81.15

Q4 2022

Shares 261,031 Value ($000) $20 Avg Close $78.14 Range $68.86 - $85.37

Q3 2022

Shares 311,381 Value ($000) $21,664 Avg Close $69.42 Range $57.54 - $79.26

Q2 2022

Shares 266,509 Value ($000) $16,120 Avg Close $60.57 Range $53.51 - $68.39

Q1 2022

Shares 261,563 Value ($000) $18,422 Avg Close $66.39 Range $49.00 - $79.73

Q4 2021

Shares 267,713 Value ($000) $21,105 Avg Close $83.91 Range $75.09 - $101.05

Q3 2021

Shares 277,115 Value ($000) $23,994 Avg Close $86.44 Range $80.00 - $90.85

Q2 2021

Shares 286,272 Value ($000) $23,703 Avg Close $86.45 Range $80.52 - $94.35

Q1 2021

Shares 32,526 Value ($000) $26,602 Avg Close $86.33 Range $74.31 - $95.28

Q4 2020

Shares 28,967 Value ($000) $26,696 Avg Close $87.68 Range $78.10 - $95.12

Q3 2020

Shares 27,344 Value ($000) $23,139 Avg Close $79.70 Range $66.20 - $93.90

Q2 2020

Shares 25,685 Value ($000) $18,181 Avg Close $64.65 Range $52.02 - $74.71

Q1 2020

Shares 25,511 Value ($000) $15,099 Avg Close $65.18 Range $50.02 - $74.67

Q4 2019

Shares 27,427 Value ($000) $16,291 Avg Close $58.38 Range $51.00 - $62.35

Q3 2019

Shares 25,030 Value ($000) $14,859 Avg Close $59.86 Range $55.57 - $63.94

Q2 2019

Shares 25,078 Value ($000) $13,891 Avg Close $51.11 Range $46.90 - $56.27

Q1 2019

Shares 27,015 Value ($000) $12,565 Avg Close $41.31 Range $32.51 - $48.49

Q4 2018

Shares 17,143 Value ($000) $5,541 Avg Close $36.53 Range $31.59 - $42.50

Q3 2018

Shares 17,183 Value ($000) $7,239 Avg Close $42.74 Range $39.71 - $44.84

Q2 2018

Shares 19,094 Value ($000) $7,882 Avg Close $38.48 Range $34.22 - $42.25

Q1 2018

Shares 18,733 Value ($000) $6,804 Avg Close $34.47 Range $29.54 - $37.86

Q4 2017

Shares 10,815 Value ($000) $3,208 Avg Close $29.30 Range $26.56 - $31.47

Q3 2017

Shares 10,172 Value ($000) $2,703 Avg Close $27.75 Range $25.54 - $28.80

Q2 2017

Shares 10,325 Value ($000) $2,716 Avg Close $24.32 Range $20.14 - $26.88

Q1 2017

Shares 9,651 Value ($000) $1,998 Avg Close $20.32 Range $18.49 - $21.24

Q4 2016

Shares 9,502 Value ($000) $1,796 Avg Close $19.64 Range $17.92 - $22.44

Q3 2016

Shares 3,778 Value ($000) $816 Avg Close $21.29 Range $20.25 - $22.48

Q2 2016

Shares 3,778 Value ($000) $823 Avg Close $19.77 Range $17.45 - $21.88

Q1 2016

Shares 3,778 Value ($000) $710 Avg Close $17.71 Range $14.65 - $20.50

Q4 2015

Shares 3,150 Value ($000) $651 Avg Close $19.90 Range $16.80 - $21.35

Q3 2015

Shares 3,150 Value ($000) $546 Avg Close $19.15 Range $16.35 - $22.35

Q2 2015

Shares 2,720 Value ($000) $546 Avg Close $20.39 Range $19.23 - $21.67

Q1 2015

Shares 2,730 Value ($000) $538 Avg Close $18.88 Range $16.88 - $20.19

Q4 2014

Shares 2,650 Value ($000) $485 Avg Close $16.16 Range $13.44 - $18.96

Q3 2014

Shares 2,336 Value ($000) $362 Avg Close $14.90 Range $13.85 - $16.58

Q2 2014

Shares 1,736 Value ($000) $274 Avg Close $16.20 Range $14.70 - $19.34

Q1 2014

Shares 1,736 Value ($000) $325 Avg Close $18.86 Range $16.38 - $21.82

Q4 2013

Shares 1,736 Value ($000) $323 Avg Close $17.69 Range $16.07 - $18.84

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	236,960	$16	$70.84	$62.00 - $85.24
Q3 2025	430,259	$36	$88.37	$79.94 - $97.43
Q2 2025	409,701	$33	$77.90	$71.21 - $83.68
Q1 2025	389,913	$31	$76.08	$68.41 - $83.03
Q4 2024	388,780	$28	$75.52	$68.26 - $82.49
Q3 2024	368,042	$28	$75.84	$70.86 - $81.63
Q2 2024	353,847	$26	$84.75	$71.90 - $96.98
Q1 2024	305,531	$30	$86.08	$79.82 - $100.38
Q4 2023	297,630	$26	$80.94	$67.35 - $89.11
Q3 2023	280,432	$22	$82.85	$75.78 - $92.30
Q2 2023	302,911	$27	$77.21	$67.22 - $92.36
Q1 2023	262,898	$18	$73.79	$65.12 - $81.15
Q4 2022	261,031	$20	$78.14	$68.86 - $85.37
Q3 2022	311,381	$21,664	$69.42	$57.54 - $79.26
Q2 2022	266,509	$16,120	$60.57	$53.51 - $68.39
Q1 2022	261,563	$18,422	$66.39	$49.00 - $79.73
Q4 2021	267,713	$21,105	$83.91	$75.09 - $101.05
Q3 2021	277,115	$23,994	$86.44	$80.00 - $90.85
Q2 2021	286,272	$23,703	$86.45	$80.52 - $94.35
Q1 2021	32,526	$26,602	$86.33	$74.31 - $95.28
Q4 2020	28,967	$26,696	$87.68	$78.10 - $95.12
Q3 2020	27,344	$23,139	$79.70	$66.20 - $93.90
Q2 2020	25,685	$18,181	$64.65	$52.02 - $74.71
Q1 2020	25,511	$15,099	$65.18	$50.02 - $74.67
Q4 2019	27,427	$16,291	$58.38	$51.00 - $62.35
Q3 2019	25,030	$14,859	$59.86	$55.57 - $63.94
Q2 2019	25,078	$13,891	$51.11	$46.90 - $56.27
Q1 2019	27,015	$12,565	$41.31	$32.51 - $48.49
Q4 2018	17,143	$5,541	$36.53	$31.59 - $42.50
Q3 2018	17,183	$7,239	$42.74	$39.71 - $44.84
Q2 2018	19,094	$7,882	$38.48	$34.22 - $42.25
Q1 2018	18,733	$6,804	$34.47	$29.54 - $37.86
Q4 2017	10,815	$3,208	$29.30	$26.56 - $31.47
Q3 2017	10,172	$2,703	$27.75	$25.54 - $28.80
Q2 2017	10,325	$2,716	$24.32	$20.14 - $26.88
Q1 2017	9,651	$1,998	$20.32	$18.49 - $21.24
Q4 2016	9,502	$1,796	$19.64	$17.92 - $22.44
Q3 2016	3,778	$816	$21.29	$20.25 - $22.48
Q2 2016	3,778	$823	$19.77	$17.45 - $21.88
Q1 2016	3,778	$710	$17.71	$14.65 - $20.50
Q4 2015	3,150	$651	$19.90	$16.80 - $21.35
Q3 2015	3,150	$546	$19.15	$16.35 - $22.35
Q2 2015	2,720	$546	$20.39	$19.23 - $21.67
Q1 2015	2,730	$538	$18.88	$16.88 - $20.19
Q4 2014	2,650	$485	$16.16	$13.44 - $18.96
Q3 2014	2,336	$362	$14.90	$13.85 - $16.58
Q2 2014	1,736	$274	$16.20	$14.70 - $19.34
Q1 2014	1,736	$325	$18.86	$16.38 - $21.82
Q4 2013	1,736	$323	$17.69	$16.07 - $18.84