COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

Conestoga Capital Advisors, LLC's Holding History (CIK: 0001163744)

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

Q4 2025

Shares 12,277 Value ($000) $826 Avg Close $70.84 Range $62.00 - $85.24

Q3 2025

Shares 15,540 Value ($000) $1,311 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 15,490 Value ($000) $1,245 Avg Close $77.90 Range $71.21 - $83.68

Q1 2025

Shares 15,495 Value ($000) $1,228 Avg Close $76.08 Range $68.41 - $83.03

Q4 2024

Shares 15,185 Value ($000) $1,087 Avg Close $75.52 Range $68.26 - $82.49

Q3 2024

Shares 15,185 Value ($000) $1,146 Avg Close $75.84 Range $70.86 - $81.63

Q2 2024

Shares 15,590 Value ($000) $1,156 Avg Close $84.75 Range $71.90 - $96.98

Q1 2024

Shares 15,655 Value ($000) $1,512 Avg Close $86.08 Range $79.82 - $100.38

Q4 2023

Shares 15,610 Value ($000) $1,364 Avg Close $80.94 Range $67.35 - $89.11

Q3 2023

Shares 15,830 Value ($000) $1,217 Avg Close $82.85 Range $75.78 - $92.30

Q2 2023

Shares 14,370 Value ($000) $1,279 Avg Close $77.21 Range $67.22 - $92.36

Q1 2023

Shares 15,756 Value ($000) $1,085 Avg Close $73.79 Range $65.12 - $81.15

Q4 2022

Shares 16,126 Value ($000) $1,246 Avg Close $78.14 Range $68.86 - $85.37

Q3 2022

Shares 16,126 Value ($000) $1,123 Avg Close $69.42 Range $57.54 - $79.26

Q2 2022

Shares 16,315 Value ($000) $986 Avg Close $60.57 Range $53.51 - $68.39

Q1 2022

Shares 16,810 Value ($000) $1,120 Avg Close $66.39 Range $49.00 - $79.73

Q4 2021

Shares 16,930 Value ($000) $1,338 Avg Close $83.91 Range $75.09 - $101.05

Q3 2021

Shares 17,205 Value ($000) $1,481 Avg Close $86.44 Range $80.00 - $90.85

Q2 2021

Shares 16,245 Value ($000) $1,345 Avg Close $86.45 Range $80.52 - $94.35

Q1 2021

Shares 1,490 Value ($000) $1,225 Avg Close $86.33 Range $74.31 - $95.28

Q4 2020

Shares 1,505 Value ($000) $1,391 Avg Close $87.68 Range $78.10 - $95.12

Q3 2020

Shares 1,605 Value ($000) $1,362 Avg Close $79.70 Range $66.20 - $93.90

Q2 2020

Shares 1,605 Value ($000) $1,141 Avg Close $64.65 Range $52.02 - $74.71

Q1 2020

Shares 1,530 Value ($000) $898 Avg Close $65.18 Range $50.02 - $74.67

Q4 2019

Shares 1,605 Value ($000) $960 Avg Close $58.38 Range $51.00 - $62.35

Q3 2019

Shares 1,655 Value ($000) $982 Avg Close $59.86 Range $55.57 - $63.94

Q2 2019

Shares 7,942 Value ($000) $4,400 Avg Close $51.11 Range $46.90 - $56.27

Q1 2019

Shares 12,177 Value ($000) $5,680 Avg Close $41.31 Range $32.51 - $48.49

Q4 2018

Shares 14,725 Value ($000) $4,967 Avg Close $36.53 Range $31.59 - $42.50

Q3 2018

Shares 12,767 Value ($000) $5,373 Avg Close $42.74 Range $39.71 - $44.84

Q2 2018

Shares 10,542 Value ($000) $4,350 Avg Close $38.48 Range $34.22 - $42.25

Q1 2018

Shares 77,515 Value ($000) $28,113 Avg Close $34.47 Range $29.54 - $37.86

Q4 2017

Shares 84,204 Value ($000) $25,004 Avg Close $29.30 Range $26.56 - $31.47

Q3 2017

Shares 81,264 Value ($000) $21,799 Avg Close $27.75 Range $25.54 - $28.80

Q2 2017

Shares 113,420 Value ($000) $29,898 Avg Close $24.32 Range $20.14 - $26.88

Q1 2017

Shares 111,470 Value ($000) $23,099 Avg Close $20.32 Range $18.49 - $21.24

Q4 2016

Shares 106,906 Value ($000) $20,151 Avg Close $19.64 Range $17.92 - $22.44

Q3 2016

Shares 106,506 Value ($000) $23,062 Avg Close $21.29 Range $20.25 - $22.48

Q2 2016

Shares 141,556 Value ($000) $30,953 Avg Close $19.77 Range $17.45 - $21.88

Q1 2016

Shares 164,901 Value ($000) $31,029 Avg Close $17.71 Range $14.65 - $20.50

Q4 2015

Shares 144,696 Value ($000) $29,907 Avg Close $19.90 Range $16.80 - $21.35

Q3 2015

Shares 174,673 Value ($000) $30,229 Avg Close $19.15 Range $16.35 - $22.35

Q2 2015

Shares 179,324 Value ($000) $36,091 Avg Close $20.39 Range $19.23 - $21.67

Q1 2015

Shares 184,149 Value ($000) $36,430 Avg Close $18.88 Range $16.88 - $20.19

Q4 2014

Shares 196,794 Value ($000) $36,137 Avg Close $16.16 Range $13.44 - $18.96

Q3 2014

Shares 208,507 Value ($000) $32,431 Avg Close $14.90 Range $13.85 - $16.58

Q2 2014

Shares 208,842 Value ($000) $33,033 Avg Close $16.20 Range $14.70 - $19.34

Q1 2014

Shares 219,015 Value ($000) $40,899 Avg Close $18.86 Range $16.38 - $21.82

Q4 2013

Shares 308,559 Value ($000) $56,954 Avg Close $17.69 Range $16.07 - $18.84

Q3 2013

Shares 307,930 Value ($000) $51,705 Avg Close $15.34 Range $12.98 - $17.22

Q2 2013

Shares 347,590 Value ($000) $44,863 Avg Close $11.32 Range $10.46 - $13.07

Q1 2013

Shares 350,530 Value ($000) $38,369 Avg Close $9.72 Range $8.90 - $11.01

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	12,277	$826	$70.84	$62.00 - $85.24
Q3 2025	15,540	$1,311	$88.37	$79.94 - $97.43
Q2 2025	15,490	$1,245	$77.90	$71.21 - $83.68
Q1 2025	15,495	$1,228	$76.08	$68.41 - $83.03
Q4 2024	15,185	$1,087	$75.52	$68.26 - $82.49
Q3 2024	15,185	$1,146	$75.84	$70.86 - $81.63
Q2 2024	15,590	$1,156	$84.75	$71.90 - $96.98
Q1 2024	15,655	$1,512	$86.08	$79.82 - $100.38
Q4 2023	15,610	$1,364	$80.94	$67.35 - $89.11
Q3 2023	15,830	$1,217	$82.85	$75.78 - $92.30
Q2 2023	14,370	$1,279	$77.21	$67.22 - $92.36
Q1 2023	15,756	$1,085	$73.79	$65.12 - $81.15
Q4 2022	16,126	$1,246	$78.14	$68.86 - $85.37
Q3 2022	16,126	$1,123	$69.42	$57.54 - $79.26
Q2 2022	16,315	$986	$60.57	$53.51 - $68.39
Q1 2022	16,810	$1,120	$66.39	$49.00 - $79.73
Q4 2021	16,930	$1,338	$83.91	$75.09 - $101.05
Q3 2021	17,205	$1,481	$86.44	$80.00 - $90.85
Q2 2021	16,245	$1,345	$86.45	$80.52 - $94.35
Q1 2021	1,490	$1,225	$86.33	$74.31 - $95.28
Q4 2020	1,505	$1,391	$87.68	$78.10 - $95.12
Q3 2020	1,605	$1,362	$79.70	$66.20 - $93.90
Q2 2020	1,605	$1,141	$64.65	$52.02 - $74.71
Q1 2020	1,530	$898	$65.18	$50.02 - $74.67
Q4 2019	1,605	$960	$58.38	$51.00 - $62.35
Q3 2019	1,655	$982	$59.86	$55.57 - $63.94
Q2 2019	7,942	$4,400	$51.11	$46.90 - $56.27
Q1 2019	12,177	$5,680	$41.31	$32.51 - $48.49
Q4 2018	14,725	$4,967	$36.53	$31.59 - $42.50
Q3 2018	12,767	$5,373	$42.74	$39.71 - $44.84
Q2 2018	10,542	$4,350	$38.48	$34.22 - $42.25
Q1 2018	77,515	$28,113	$34.47	$29.54 - $37.86
Q4 2017	84,204	$25,004	$29.30	$26.56 - $31.47
Q3 2017	81,264	$21,799	$27.75	$25.54 - $28.80
Q2 2017	113,420	$29,898	$24.32	$20.14 - $26.88
Q1 2017	111,470	$23,099	$20.32	$18.49 - $21.24
Q4 2016	106,906	$20,151	$19.64	$17.92 - $22.44
Q3 2016	106,506	$23,062	$21.29	$20.25 - $22.48
Q2 2016	141,556	$30,953	$19.77	$17.45 - $21.88
Q1 2016	164,901	$31,029	$17.71	$14.65 - $20.50
Q4 2015	144,696	$29,907	$19.90	$16.80 - $21.35
Q3 2015	174,673	$30,229	$19.15	$16.35 - $22.35
Q2 2015	179,324	$36,091	$20.39	$19.23 - $21.67
Q1 2015	184,149	$36,430	$18.88	$16.88 - $20.19
Q4 2014	196,794	$36,137	$16.16	$13.44 - $18.96
Q3 2014	208,507	$32,431	$14.90	$13.85 - $16.58
Q2 2014	208,842	$33,033	$16.20	$14.70 - $19.34
Q1 2014	219,015	$40,899	$18.86	$16.38 - $21.82
Q4 2013	308,559	$56,954	$17.69	$16.07 - $18.84
Q3 2013	307,930	$51,705	$15.34	$12.98 - $17.22
Q2 2013	347,590	$44,863	$11.32	$10.46 - $13.07
Q1 2013	350,530	$38,369	$9.72	$8.90 - $11.01