COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

BANK OF MONTREAL /CAN/'s Holding History (CIK: 0000927971)

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

Q4 2025

Shares 453,968 Value ($000) $30,525 Avg Close $70.84 Range $62.00 - $85.24

Q3 2025

Shares 469,680 Value ($000) $39,627 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 420,126 Value ($000) $33,778 Avg Close $77.90 Range $71.21 - $83.68

Q1 2025

Shares 442,916 Value ($000) $35,092 Avg Close $76.08 Range $68.41 - $83.03

Q4 2024

Shares 544,384 Value ($000) $38,972 Avg Close $75.52 Range $68.26 - $82.49

Q3 2024

Shares 621,900 Value ($000) $46,649 Avg Close $75.84 Range $70.86 - $81.63

Q2 2024

Shares 628,409 Value ($000) $46,628 Avg Close $84.75 Range $71.90 - $96.98

Q1 2024

Shares 443,727 Value ($000) $42,962 Avg Close $86.08 Range $79.82 - $100.38

Q4 2023

Shares 502,920 Value ($000) $44,265 Avg Close $80.94 Range $67.35 - $89.11

Q3 2023

Shares 317,040 Value ($000) $25,103 Avg Close $82.85 Range $75.78 - $92.30

Q2 2023

Shares 261,858 Value ($000) $23,528 Avg Close $77.21 Range $67.22 - $92.36

Q1 2023

Shares 359,921 Value ($000) $24,795 Avg Close $73.79 Range $65.12 - $81.15

Q4 2022

Shares 437,511 Value ($000) $33,997 Avg Close $78.14 Range $68.86 - $85.37

Q3 2022

Shares 300,646 Value ($000) $21,559 Avg Close $69.42 Range $57.54 - $79.26

Q2 2022

Shares 71,252 Value ($000) $4,404 Avg Close $60.57 Range $53.51 - $68.39

Q1 2022

Shares 70,776 Value ($000) $4,822 Avg Close $66.39 Range $49.00 - $79.73

Q4 2021

Shares 98,820 Value ($000) $7,925 Avg Close $83.91 Range $75.09 - $101.05

Q3 2021

Shares 56,897 Value ($000) $4,903 Avg Close $86.44 Range $80.00 - $90.85

Q2 2021

Shares 209,292 Value ($000) $17,518 Avg Close $86.45 Range $80.52 - $94.35

Q1 2021

Shares 22,036 Value ($000) $19,269 Avg Close $86.33 Range $74.31 - $95.28

Q4 2020

Shares 27,265 Value ($000) $24,658 Avg Close $87.68 Range $78.10 - $95.12

Q3 2020

Shares 26,413 Value ($000) $22,818 Avg Close $79.70 Range $66.20 - $93.90

Q2 2020

Shares 28,852 Value ($000) $20,953 Avg Close $64.65 Range $52.02 - $74.71

Q1 2020

Shares 23,539 Value ($000) $12,657 Avg Close $65.18 Range $50.02 - $74.67

Q4 2019

Shares 28,629 Value ($000) $17,129 Avg Close $58.38 Range $51.00 - $62.35

Q3 2019

Shares 21,599 Value ($000) $12,813 Avg Close $59.86 Range $55.57 - $63.94

Q2 2019

Shares 17,884 Value ($000) $9,909 Avg Close $51.11 Range $46.90 - $56.27

Q1 2019

Shares 12,289 Value ($000) $5,733 Avg Close $41.31 Range $32.51 - $48.49

Q4 2018

Shares 19,287 Value ($000) $6,505 Avg Close $36.53 Range $31.59 - $42.50

Q3 2018

Shares 22,066 Value ($000) $9,285 Avg Close $42.74 Range $39.71 - $44.84

Q2 2018

Shares 18,587 Value ($000) $7,670 Avg Close $38.48 Range $34.22 - $42.25

Q1 2018

Shares 9,627 Value ($000) $3,492 Avg Close $34.47 Range $29.54 - $37.86

Q4 2017

Shares 7,035 Value ($000) $2,089 Avg Close $29.30 Range $26.56 - $31.47

Q3 2017

Shares 1,509 Value ($000) $404 Avg Close $27.75 Range $25.54 - $28.80

Q2 2017

Shares 1,455 Value ($000) $383 Avg Close $24.32 Range $20.14 - $26.88

Q1 2017

Shares 21,058 Value ($000) $4,365 Avg Close $20.32 Range $18.49 - $21.24

Q4 2016

Shares 11,069 Value ($000) $2,116 Avg Close $19.64 Range $17.92 - $22.44

Q3 2016

Shares 2,658 Value ($000) $576 Avg Close $21.29 Range $20.25 - $22.48

Q2 2016

Shares 2,611 Value ($000) $571 Avg Close $19.77 Range $17.45 - $21.88

Q1 2016

Shares 2,878 Value ($000) $541 Avg Close $17.71 Range $14.65 - $20.50

Q4 2015

Shares 1,075 Value ($000) $223 Avg Close $19.90 Range $16.80 - $21.35

Q3 2015

Shares 1,738 Value ($000) $300 Avg Close $19.15 Range $16.35 - $22.35

Q2 2015

Shares 1,769 Value ($000) $357 Avg Close $20.39 Range $19.23 - $21.67

Q1 2015

Shares 104 Value ($000) $21 Avg Close $18.88 Range $16.88 - $20.19

Q4 2014

Shares 2,294 Value ($000) $421 Avg Close $16.16 Range $13.44 - $18.96

Q3 2014

Shares 2,294 Value ($000) $357 Avg Close $14.90 Range $13.85 - $16.58

Q2 2014

Shares 1,926 Value ($000) $304 Avg Close $16.20 Range $14.70 - $19.34

Q1 2014

Shares 1,196 Value ($000) $223 Avg Close $18.86 Range $16.38 - $21.82

Q4 2013

Shares 1,130 Value ($000) $208 Avg Close $17.69 Range $16.07 - $18.84

Q3 2013

Shares 1,032 Value ($000) $174 Avg Close $15.34 Range $12.98 - $17.22

Q2 2013

Shares 516 Value ($000) $67 Avg Close $11.32 Range $10.46 - $13.07

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	453,968	$30,525	$70.84	$62.00 - $85.24
Q3 2025	469,680	$39,627	$88.37	$79.94 - $97.43
Q2 2025	420,126	$33,778	$77.90	$71.21 - $83.68
Q1 2025	442,916	$35,092	$76.08	$68.41 - $83.03
Q4 2024	544,384	$38,972	$75.52	$68.26 - $82.49
Q3 2024	621,900	$46,649	$75.84	$70.86 - $81.63
Q2 2024	628,409	$46,628	$84.75	$71.90 - $96.98
Q1 2024	443,727	$42,962	$86.08	$79.82 - $100.38
Q4 2023	502,920	$44,265	$80.94	$67.35 - $89.11
Q3 2023	317,040	$25,103	$82.85	$75.78 - $92.30
Q2 2023	261,858	$23,528	$77.21	$67.22 - $92.36
Q1 2023	359,921	$24,795	$73.79	$65.12 - $81.15
Q4 2022	437,511	$33,997	$78.14	$68.86 - $85.37
Q3 2022	300,646	$21,559	$69.42	$57.54 - $79.26
Q2 2022	71,252	$4,404	$60.57	$53.51 - $68.39
Q1 2022	70,776	$4,822	$66.39	$49.00 - $79.73
Q4 2021	98,820	$7,925	$83.91	$75.09 - $101.05
Q3 2021	56,897	$4,903	$86.44	$80.00 - $90.85
Q2 2021	209,292	$17,518	$86.45	$80.52 - $94.35
Q1 2021	22,036	$19,269	$86.33	$74.31 - $95.28
Q4 2020	27,265	$24,658	$87.68	$78.10 - $95.12
Q3 2020	26,413	$22,818	$79.70	$66.20 - $93.90
Q2 2020	28,852	$20,953	$64.65	$52.02 - $74.71
Q1 2020	23,539	$12,657	$65.18	$50.02 - $74.67
Q4 2019	28,629	$17,129	$58.38	$51.00 - $62.35
Q3 2019	21,599	$12,813	$59.86	$55.57 - $63.94
Q2 2019	17,884	$9,909	$51.11	$46.90 - $56.27
Q1 2019	12,289	$5,733	$41.31	$32.51 - $48.49
Q4 2018	19,287	$6,505	$36.53	$31.59 - $42.50
Q3 2018	22,066	$9,285	$42.74	$39.71 - $44.84
Q2 2018	18,587	$7,670	$38.48	$34.22 - $42.25
Q1 2018	9,627	$3,492	$34.47	$29.54 - $37.86
Q4 2017	7,035	$2,089	$29.30	$26.56 - $31.47
Q3 2017	1,509	$404	$27.75	$25.54 - $28.80
Q2 2017	1,455	$383	$24.32	$20.14 - $26.88
Q1 2017	21,058	$4,365	$20.32	$18.49 - $21.24
Q4 2016	11,069	$2,116	$19.64	$17.92 - $22.44
Q3 2016	2,658	$576	$21.29	$20.25 - $22.48
Q2 2016	2,611	$571	$19.77	$17.45 - $21.88
Q1 2016	2,878	$541	$17.71	$14.65 - $20.50
Q4 2015	1,075	$223	$19.90	$16.80 - $21.35
Q3 2015	1,738	$300	$19.15	$16.35 - $22.35
Q2 2015	1,769	$357	$20.39	$19.23 - $21.67
Q1 2015	104	$21	$18.88	$16.88 - $20.19
Q4 2014	2,294	$421	$16.16	$13.44 - $18.96
Q3 2014	2,294	$357	$14.90	$13.85 - $16.58
Q2 2014	1,926	$304	$16.20	$14.70 - $19.34
Q1 2014	1,196	$223	$18.86	$16.38 - $21.82
Q4 2013	1,130	$208	$17.69	$16.07 - $18.84
Q3 2013	1,032	$174	$15.34	$12.98 - $17.22
Q2 2013	516	$67	$11.32	$10.46 - $13.07