COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q4 2025

Shares 53,668 Value ($000) $3,609 Avg Close $70.84 Range $62.00 - $85.24

Q3 2025

Shares 66,414 Value ($000) $5,603 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 86,856 Value ($000) $6,983 Avg Close $77.90 Range $71.21 - $83.68

Q1 2025

Shares 93,434 Value ($000) $7,403 Avg Close $76.08 Range $68.41 - $83.03

Q4 2024

Shares 122,115 Value ($000) $8,742 Avg Close $75.52 Range $68.26 - $82.49

Q3 2024

Shares 347,693 Value ($000) $26,230 Avg Close $75.84 Range $70.86 - $81.63

Q2 2024

Shares 602,042 Value ($000) $44,635 Avg Close $84.75 Range $71.90 - $96.98

Q1 2024

Shares 3,237,246 Value ($000) $312,718 Avg Close $86.08 Range $79.82 - $100.38

Q4 2023

Shares 2,830,699 Value ($000) $247,375 Avg Close $80.94 Range $67.35 - $89.11

Q3 2023

Shares 3,580,549 Value ($000) $275,308 Avg Close $82.85 Range $75.78 - $92.30

Q2 2023

Shares 2,917,957 Value ($000) $259,698 Avg Close $77.21 Range $67.22 - $92.36

Q1 2023

Shares 1,904,922 Value ($000) $131,154 Avg Close $73.79 Range $65.12 - $81.15

Q4 2022

Shares 3,304,445 Value ($000) $255,368 Avg Close $78.14 Range $68.86 - $85.37

Q3 2022

Shares 3,384,298 Value ($000) $235,716 Avg Close $69.42 Range $57.54 - $79.26

Q2 2022

Shares 3,505,370 Value ($000) $211,759 Avg Close $60.57 Range $53.51 - $68.39

Q1 2022

Shares 3,477,341 Value ($000) $231,626 Avg Close $66.39 Range $49.00 - $79.73

Q4 2021

Shares 2,298,577 Value ($000) $181,656 Avg Close $83.91 Range $75.09 - $101.05

Q3 2021

Shares 4,483,994 Value ($000) $385,891 Avg Close $86.44 Range $80.00 - $90.85

Q2 2021

Shares 4,826,473 Value ($000) $399,728 Avg Close $86.45 Range $80.52 - $94.35

Q1 2021

Shares 489,057 Value ($000) $401,951 Avg Close $86.33 Range $74.31 - $95.28

Q4 2020

Shares 444,411 Value ($000) $410,761 Avg Close $87.68 Range $78.10 - $95.12

Q3 2020

Shares 502,560 Value ($000) $426,427 Avg Close $79.70 Range $66.20 - $93.90

Q2 2020

Shares 736,643 Value ($000) $523,510 Avg Close $64.65 Range $52.02 - $74.71

Q1 2020

Shares 660,996 Value ($000) $388,144 Avg Close $65.18 Range $50.02 - $74.67

Q4 2019

Shares 436,841 Value ($000) $261,362 Avg Close $58.38 Range $51.00 - $62.35

Q3 2019

Shares 1,070,843 Value ($000) $635,225 Avg Close $59.86 Range $55.57 - $63.94

Q2 2019

Shares 1,360,988 Value ($000) $754,069 Avg Close $51.11 Range $46.90 - $56.27

Q1 2019

Shares 1,709,871 Value ($000) $797,518 Avg Close $41.31 Range $32.51 - $48.49

Q4 2018

Shares 1,695,806 Value ($000) $572,064 Avg Close $36.53 Range $31.59 - $42.50

Q3 2018

Shares 1,920,604 Value ($000) $808,267 Avg Close $42.74 Range $39.71 - $44.84

Q2 2018

Shares 2,059,026 Value ($000) $849,616 Avg Close $38.48 Range $34.22 - $42.25

Q1 2018

Shares 2,452,269 Value ($000) $889,389 Avg Close $34.47 Range $29.54 - $37.86

Q4 2017

Shares 2,649,082 Value ($000) $786,645 Avg Close $29.30 Range $26.56 - $31.47

Q3 2017

Shares 2,771,053 Value ($000) $743,335 Avg Close $27.75 Range $25.54 - $28.80

Q2 2017

Shares 2,226,811 Value ($000) $586,988 Avg Close $24.32 Range $20.14 - $26.88

Q1 2017

Shares 1,859,435 Value ($000) $385,312 Avg Close $20.32 Range $18.49 - $21.24

Q4 2016

Shares 1,355,532 Value ($000) $255,504 Avg Close $19.64 Range $17.92 - $22.44

Q3 2016

Shares 2,076,749 Value ($000) $449,678 Avg Close $21.29 Range $20.25 - $22.48

Q2 2016

Shares 2,152,470 Value ($000) $470,660 Avg Close $19.77 Range $17.45 - $21.88

Q1 2016

Shares 2,829,620 Value ($000) $532,449 Avg Close $17.71 Range $14.65 - $20.50

Q4 2015

Shares 3,058,832 Value ($000) $632,231 Avg Close $19.90 Range $16.80 - $21.35

Q3 2015

Shares 3,083,644 Value ($000) $533,656 Avg Close $19.15 Range $16.35 - $22.35

Q2 2015

Shares 2,690,383 Value ($000) $541,466 Avg Close $20.39 Range $19.23 - $21.67

Q1 2015

Shares 2,586,494 Value ($000) $511,687 Avg Close $18.88 Range $16.88 - $20.19

Q4 2014

Shares 1,130,277 Value ($000) $207,553 Avg Close $16.16 Range $13.44 - $18.96

Q3 2014

Shares 1,142,314 Value ($000) $177,676 Avg Close $14.90 Range $13.85 - $16.58

Q2 2014

Shares 1,196,235 Value ($000) $189,208 Avg Close $16.20 Range $14.70 - $19.34

Q1 2014

Shares 825,164 Value ($000) $154,092 Avg Close $18.86 Range $16.38 - $21.82

Q4 2013

Shares 813,181 Value ($000) $150,097 Avg Close $17.69 Range $16.07 - $18.84

Q3 2013

Shares 449,591 Value ($000) $75,486 Avg Close $15.34 Range $12.98 - $17.22

Q2 2013

Shares 341,335 Value ($000) $44,056 Avg Close $11.32 Range $10.46 - $13.07

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	53,668	$3,609	$70.84	$62.00 - $85.24
Q3 2025	66,414	$5,603	$88.37	$79.94 - $97.43
Q2 2025	86,856	$6,983	$77.90	$71.21 - $83.68
Q1 2025	93,434	$7,403	$76.08	$68.41 - $83.03
Q4 2024	122,115	$8,742	$75.52	$68.26 - $82.49
Q3 2024	347,693	$26,230	$75.84	$70.86 - $81.63
Q2 2024	602,042	$44,635	$84.75	$71.90 - $96.98
Q1 2024	3,237,246	$312,718	$86.08	$79.82 - $100.38
Q4 2023	2,830,699	$247,375	$80.94	$67.35 - $89.11
Q3 2023	3,580,549	$275,308	$82.85	$75.78 - $92.30
Q2 2023	2,917,957	$259,698	$77.21	$67.22 - $92.36
Q1 2023	1,904,922	$131,154	$73.79	$65.12 - $81.15
Q4 2022	3,304,445	$255,368	$78.14	$68.86 - $85.37
Q3 2022	3,384,298	$235,716	$69.42	$57.54 - $79.26
Q2 2022	3,505,370	$211,759	$60.57	$53.51 - $68.39
Q1 2022	3,477,341	$231,626	$66.39	$49.00 - $79.73
Q4 2021	2,298,577	$181,656	$83.91	$75.09 - $101.05
Q3 2021	4,483,994	$385,891	$86.44	$80.00 - $90.85
Q2 2021	4,826,473	$399,728	$86.45	$80.52 - $94.35
Q1 2021	489,057	$401,951	$86.33	$74.31 - $95.28
Q4 2020	444,411	$410,761	$87.68	$78.10 - $95.12
Q3 2020	502,560	$426,427	$79.70	$66.20 - $93.90
Q2 2020	736,643	$523,510	$64.65	$52.02 - $74.71
Q1 2020	660,996	$388,144	$65.18	$50.02 - $74.67
Q4 2019	436,841	$261,362	$58.38	$51.00 - $62.35
Q3 2019	1,070,843	$635,225	$59.86	$55.57 - $63.94
Q2 2019	1,360,988	$754,069	$51.11	$46.90 - $56.27
Q1 2019	1,709,871	$797,518	$41.31	$32.51 - $48.49
Q4 2018	1,695,806	$572,064	$36.53	$31.59 - $42.50
Q3 2018	1,920,604	$808,267	$42.74	$39.71 - $44.84
Q2 2018	2,059,026	$849,616	$38.48	$34.22 - $42.25
Q1 2018	2,452,269	$889,389	$34.47	$29.54 - $37.86
Q4 2017	2,649,082	$786,645	$29.30	$26.56 - $31.47
Q3 2017	2,771,053	$743,335	$27.75	$25.54 - $28.80
Q2 2017	2,226,811	$586,988	$24.32	$20.14 - $26.88
Q1 2017	1,859,435	$385,312	$20.32	$18.49 - $21.24
Q4 2016	1,355,532	$255,504	$19.64	$17.92 - $22.44
Q3 2016	2,076,749	$449,678	$21.29	$20.25 - $22.48
Q2 2016	2,152,470	$470,660	$19.77	$17.45 - $21.88
Q1 2016	2,829,620	$532,449	$17.71	$14.65 - $20.50
Q4 2015	3,058,832	$632,231	$19.90	$16.80 - $21.35
Q3 2015	3,083,644	$533,656	$19.15	$16.35 - $22.35
Q2 2015	2,690,383	$541,466	$20.39	$19.23 - $21.67
Q1 2015	2,586,494	$511,687	$18.88	$16.88 - $20.19
Q4 2014	1,130,277	$207,553	$16.16	$13.44 - $18.96
Q3 2014	1,142,314	$177,676	$14.90	$13.85 - $16.58
Q2 2014	1,196,235	$189,208	$16.20	$14.70 - $19.34
Q1 2014	825,164	$154,092	$18.86	$16.38 - $21.82
Q4 2013	813,181	$150,097	$17.69	$16.07 - $18.84
Q3 2013	449,591	$75,486	$15.34	$12.98 - $17.22
Q2 2013	341,335	$44,056	$11.32	$10.46 - $13.07