COSTAR GROUP INC (CSGP) Stock Ownership

NASDAQ:CSGP • US22160N1090

Current stock price

37.06 USD
+0.58 (+1.59%)
At close:
37.45 USD
+0.39 (+1.05%)
After Hours:

CSGP Ownership information

CSGP Ownership Chart.CSGP Ownership Chart: showing Insider, Institutional ownership and shares available to the public.CSGP Ownership.InsiderInstitutional



Shares Outstanding419.79M
Float414.74M
Float Short Interest Percentage5.78%
Owners (insider)0.67%
Owners (institutional)104.78%
Owners (insider) change-1.86%
Owners (institutional) change0.02%
CSGP Institutional Ownership HistoryCSGP Institutional Ownership HistoryCSGP Institutional Ownership History Sep 2021 Mar 2022 Sep 2022 Mar 2023 Sep 2023 Mar 2024 Sep 2024 Mar 2025 Sep 2025 Mar 2026 100M 200M 300M 400M
CSGP Historical Insider Transactions ChartCSGP Historical Insider Buy and Sell Transactions ChartCSGP Historical Insider Transactions May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 Jan 2026 Feb 2026 Mar 2026 Apr 2026 0 100K -100K -200K -300K
DateNameTypeSharesPriceAmount
Mar 15, 2026Cann Cynthia CammettOption Excercise119443.63$ 52,094.22
Mar 15, 2026Boxer GeneOption Excercise48243.63$ 21,029.66
Mar 15, 2026Ruggles LisaOption Excercise297743.63$ 129,886.51
Mar 15, 2026Boxer GeneOption Excercise42843.63$ 18,673.64
Mar 15, 2026SIMURO FRANKOption Excercise1110743.63$ 484,598.41
Mar 15, 2026DESMARAIS MICHAEL JOption Excercise287343.63$ 125,348.99
Mar 10, 2026Cann Cynthia CammettGrant4374$ 0.00
Mar 10, 2026FLORANCE ANDREW CGrant124162$ 0.00
Mar 10, 2026LOWN CHRISTIAN M.Grant12268$ 0.00
Mar 10, 2026Boxer GeneGrant21920$ 0.00
Mar 10, 2026DESMARAIS MICHAEL JGrant17676$ 0.00
Mar 6, 2026Sams Louise SOpen Market Purchase100048.36$ 48,360.00
Mar 2, 2026Glaser Rachel COpen Market Purchase100044.94$ 44,940.00
Mar 2, 2026SAINT FREDERICK G.Open Market Purchase2000045.33$ 906,600.00
Mar 1, 2026SAINT FREDERICK G.Option Excercise1109644.63$ 495,214.48
Mar 1, 2026LOWN CHRISTIAN M.Option Excercise717544.63$ 320,220.25
Mar 1, 2026FLORANCE ANDREW COption Excercise5959344.63$ 2,659,635.59
Mar 1, 2026Boxer GeneOption Excercise454744.63$ 202,932.61
Mar 1, 2026Ruggles LisaOption Excercise893144.63$ 398,590.53
Mar 1, 2026SIMURO FRANKOption Excercise1870244.63$ 834,670.26
Mar 1, 2026DESMARAIS MICHAEL JOption Excercise635344.63$ 283,534.39
Mar 1, 2026Cann Cynthia CammettOption Excercise138544.63$ 61,812.55
Feb 27, 2026FLORANCE ANDREW COpen Market Purchase5572044.52$ 2,480,654.40
Feb 19, 2026SIMURO FRANKOther Disposition307270.00$ 0.00
Feb 19, 2026SIMURO FRANKOption Excercise442149.07$ 216,938.47
Feb 19, 2026SAINT FREDERICK G.Other Disposition175830.00$ 0.00
Feb 19, 2026SAINT FREDERICK G.Option Excercise214949.07$ 105,451.43
Feb 19, 2026FLORANCE ANDREW COther Disposition1049830.00$ 0.00
Feb 19, 2026FLORANCE ANDREW COption Excercise1922149.07$ 943,174.47
Feb 19, 2026Ruggles LisaOther Disposition175830.00$ 0.00
Feb 19, 2026Ruggles LisaOption Excercise321949.07$ 157,956.33
Feb 15, 2026FLORANCE ANDREW COption Excercise1748244.99$ 786,515.18
Feb 15, 2026Ruggles LisaOption Excercise357644.99$ 160,884.24
Feb 15, 2026SAINT FREDERICK G.Option Excercise242444.99$ 109,055.76
Feb 15, 2026SIMURO FRANKOption Excercise415144.99$ 186,753.49
Nov 13, 2025Hill John WOpen Market Sale225068.68$ 154,530.00
Nov 13, 2025Cann Cynthia CammettOpen Market Sale184168.79$ 126,642.39
Sep 9, 2025McCarthy Christine MGrant29730.00$ 0.00
Sep 9, 2025Sams Louise SGrant32910.00$ 0.00
Sep 9, 2025BERISFORD JOHN LGrant29730.00$ 0.00
Sep 9, 2025Hill John WGrant31770.00$ 0.00
Sep 9, 2025Musslewhite Robert WGrant31210.00$ 0.00
Sep 9, 2025Glaser Rachel CGrant31430.00$ 0.00
Sep 9, 2025Brunner Angelique G.Grant31430.00$ 0.00
Aug 28, 2025SAINT FREDERICK G.Open Market Sale2500090.33$ 2,258,250.00
Aug 1, 2025SAINT FREDERICK G.Option Excercise143695.19$ 136,692.84
Aug 1, 2025Cann Cynthia CammettOption Excercise71995.19$ 68,441.61
Jul 28, 2025SAINT FREDERICK G.Open Market Sale2500093.23$ 2,330,750.00
Jul 28, 2025Cann Cynthia CammettOpen Market Sale203392.85$ 188,764.05
Jul 1, 2025LOWN CHRISTIAN M.Option Excercise466680.40$ 375,146.40
Jun 15, 2025Cann Cynthia CammettOption Excercise46181.16$ 37,414.76
Jun 11, 2025SAINT FREDERICK G.Open Market Sale2500081.10$ 2,027,500.00
Jun 1, 2025Ruggles LisaOption Excercise1273.56$ 882.72