Costar Group Inc

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Costar Group Inc
CIK #0001057352
EDGAR Form CIK 2011 - 2026
10-K [0001057352]
10-Q [0001057352]
3 [0001057352]
4 [0001057352]
5 [0001057352]
8-K [0001057352]
SC 13G [0001057352]
Form 13D/13G Filer Form 13D/13G Subject Filed
Vanguard Capital Management LLC Costar Group Inc [2026-04-29]
Vanguard Portfolio Management LLC Costar Group Inc [2026-04-29]
Winslow Capital Management LLC Costar Group Inc [2019-02-13]
BlackRock Inc Costar Group Inc [2019-02-08]
Price T Rowe Associates Inc /MD/ Costar Group Inc [2018-02-14]
Winslow Capital Management LLC Costar Group Inc [2018-02-14]
Janus Henderson Group PLC Costar Group Inc [2018-02-13]
Wellington Management Group LLP Costar Group Inc [2018-02-08]
Winslow Capital Management LLC Costar Group Inc [2017-02-13]
Janus Capital Management LLC Costar Group Inc [2016-02-16]
View All
Form 3/4/5 Subject 2011 - 2026
LOWN Christian M
Costar Group Inc
Sams Louise S
Hill John W
Musslewhite Robert W
Brunner Angelique G
Berisford John L
Glaser Rachel C
McCarthy Christine M
Cann Cynthia Cammett
Florance Andrew C
Desmarais Michael J
Simuro Frank
Boxer Gene
Ruggles Lisa
Banerjee Nana
Saint Frederick G
Klein Michael R
Nassetta Christopher J
Kaplan Laura Cox
Wheeler Scott T
Glosserman Michael J
Linnington Matthew
Steinberg David Jay
Carchedi Francis
Haber Warren H
Yinger Scott L
Radecki Brian J
Bonderman David
Stanfill John L
Kitchen Jennifer
Marples Paul
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-15 Tax withheld 2,977 $43.63 129,887
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-15 Tax withheld 2,873 $43.63 125,349
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-15 Tax withheld 11,107 $43.63 484,598
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-15 Tax withheld 1,194 $43.63 52,094
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-15 Tax withheld 428 $43.63 18,674
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-10 Grant 21,920
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-10 Grant 17,676
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-10 Grant 124,162
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-10 Grant 12,268
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-10 Grant 4,374
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-06 Buy 1,000 $48.36 48,360
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-02 Buy 20,000 $45.33 906,600
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-02 Buy 1,000 $44.94 44,940
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-01 Tax withheld 7,175 $44.63 320,220
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-01 Tax withheld 8,931 $44.63 398,591
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-01 Tax withheld 18,702 $44.63 834,670
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-01 Tax withheld 59,593 $44.63 2,659,636
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-01 Tax withheld 6,353 $44.63 283,534
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-01 Tax withheld 1,385 $44.63 61,813
Costar Group Inc CSGP
Common Stock, par value $0.01 per share
2026-03-01 Tax withheld 11,096 $44.63 495,214
showing 20 of 200 most recent transactions
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