Insider and congress filings

CoStar Group, Inc. (CSGP)

NASDAQ · Real Estate · 361 insider transactions · 79 congress trades · last filed 10 days agoS&P 500

14
Open-market insider filings shown
1d
Median delay on the insider filings, in business days
within the two business day rule
6 buys·8 sells
Purchases and sales in the filings shown
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About CoStar Group, Inc.

from the company's filings and listing, as of Oct 26, 2026
Exchange
NASDAQ
Sector
Real Estate
Industry
Real Estate - Services
Chief executive
Andrew C. Florance
Employees
8,441
Listed since
-
Market value
$13.7B
Price to earnings (12 mo)
184.6
Net income per share, as reported (12 mo)
$0.18
Dividend yield
-

www.costargroup.com

Earnings

6 reported quarters · next on Oct 27, 2026
QuarterEPSEPS expectedRevenueRevenue expectedResult
Q2 FY2026reported Jul 28, 2026$0.32$0.29$925.0M$928.8MEPS beatRevenue in line
Q1 FY2026reported Apr 28, 2026$0.23$0.17$897.0M$896.7MEPS beatRevenue in line
Q4 FY2025reported Feb 24, 2026$0.31$0.27$900.0M$892.2MEPS beatRevenue in line
Q3 FY2025reported Oct 28, 2025$0.23$0.18$833.6M$813.2MEPS beatRevenue beat
Q2 FY2025reported Jul 22, 2025$0.17$0.14$781.3M$772.2MEPS beatRevenue in line
Q1 FY2025reported Apr 29, 2025$0.14$0.11$732.2M$716.8MEPS beatRevenue beat

Actual against the consensus estimate at the time. A flag marks a beat or a miss of more than 1.5% either way; inside that band the quarter is in line. A flag reads n/a only when a number is missing. Quarterly EPS is the figure set against the consensus, usually adjusted, so the quarters need not add up to the 12-month net income per share above. An estimate is a forecast made by analysts, not a company target.

Executive pay

as filed for fiscal 2025 · proxy filed Apr 30, 2026
ExecutiveSalaryStock awardsOtherTotal
Andrew C. FloranceFounder and Chief Executive Officer$1.0M$28.3M$7.1M$36.4M
Frank A. SimuroChief Technology Officer$647K$7.3M$2.3M$10.3M
Frederick G. SaintPresident, Marketplaces$592K$5.5M$2.1M$8.2M
Christian M. LownChief Financial Officer$588K$5.5M$1.9M$8.0M
Lisa C. RugglesSenior Vice President, Global Operations$592K$3.7M$1.6M$5.8M

The summary compensation table from the proxy statement for fiscal 2025, with titles as filed then. Executives who have since left are not shown. Read the filing

Institutional holders

13F positions as of Jun 30, 2026
HolderValueSharesShares vs prior qtr% of shares out
Vanguard Portfolio Management LLC$1.1B37,914,844-0.8%9.38%
BlackRock, Inc.$957.6M33,813,9690.0%8.37%
Vanguard Capital Management LLC$755.7M26,683,792-2.7%6.60%
BAMCO Inc$612.5M21,626,763+32.6%5.35%
State Street Corp$521.4M18,410,876-1.3%4.56%
Capital International Investors$471.3M16,643,016+7.3%4.12%
Baillie Gifford & Co$372.5M13,154,165-3.4%3.26%
Geode Capital Management, LLC$343.3M12,166,469-2.3%3.01%
Akre Capital Management LLC$331.3M11,699,396+13.1%2.90%
Polen Capital Management LLC$248.1M8,759,314-30.3%2.17%
AQR Capital Management LLCCliff Asness$239.2M8,445,474+568.8%2.09%
Jupiter Topco LLC$221.8M7,832,860New1.94%

A 13F reports long US equity positions and is filed within 45 days of the quarter end, so these are positions as they stood on Jun 30, 2026. New: not in this holder's prior 13F as reported; a change of filer ID can also show as new. For a manager's whole book see the fund directory. What a 13F covers and leaves out is explained in our guide to Form 13F.

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Open-market insider trades

14 filings shown · newest filing first
InsiderActionSharesPriceValueTrade dateDelay
(business days)
John W. HillDirectorSold3,500$30.21$106KAug 5, 2026filed Aug 10, 20263d
Cynthia Cammett CannChief Accounting OfficerSold4,788$30.78$147KAug 7, 2026filed Aug 10, 20261d
Andrew C. FloranceFounder and CEOBought83,300$29.89$2.5MAug 4, 2026filed Aug 5, 20261d
Andrew C. FlorancePresident and CEOBought · 2 lines71,430$35.20$2.5MMay 1, 2026filed May 4, 20261d
Louise S. SamsDirectorBought1,000$48.36$48KMar 6, 2026filed Mar 9, 20261d
Frederick G. SaintPresident, MarketplacesBought20,000$45.33$907KMar 2, 2026filed Mar 3, 20261d
Rachel C. GlaserDirectorBought1,000$44.94$45KMar 2, 2026filed Mar 3, 20261d
Andrew C. FlorancePresident and CEOBought55,720$44.52$2.5MFeb 27, 2026filed Mar 2, 20261d
Cynthia Cammett CannChief Accounting OfficerSold1,841$68.79$127KNov 13, 2025filed Nov 17, 20252d
John W. HillDirectorSold2,250$68.68$155KNov 13, 2025filed Nov 17, 20252d
Frederick G. SaintPresident, MarketplacesSold25,000$90.33$2.3MAug 28, 2025filed Sep 2, 20252d
Cynthia Cammett CannChief Accounting OfficerSold2,033$92.85$189KJul 28, 2025filed Jul 29, 20251d
Frederick G. SaintPresident, MarketplacesSold25,000$93.23$2.3MJul 28, 2025filed Jul 29, 20251d
Frederick G. SaintPresident, MarketplacesSold25,000$81.10$2.0MJun 11, 2025filed Jun 12, 20251d

One row is one filing, newest filing first. A filing that reported its trade in several tranches is summed, priced at the weighted average, and marked with its line count. The delay counts business days from the trade to the filing, the unit of Form 4's two business day deadline: weekends and federal holidays are skipped. How the filing itself works is explained in our guide to Form 4.

Other Form 4 activity (20)
InsiderEventSharesDate
Robin Jack RossmannChief Financial OfficerTax withholding756Oct 15, 2026
Robin Jack RossmannChief Financial OfficerOther Form 4 entry (see filing)10,223Jul 31, 2026
Frederick G. SaintPresident, MarketplacesTax withholding1,436Aug 1, 2026
Cynthia Cammett CannChief Accounting OfficerTax withholding1,077Aug 1, 2026
Cynthia Cammett CannChief Accounting OfficerStock award26,078Jul 31, 2026
Robin Jack RossmannChief Financial OfficerStock award34,771Jul 31, 2026
Christian M. LownChief Financial OfficerTax withholding5,597Jul 1, 2026
Christine M. McCarthyDirectorStock award8,262Jun 23, 2026
Louise S. SamsDirectorStock award8,262Jun 23, 2026
Robert W. MusslewhiteDirectorStock award8,262Jun 23, 2026
Angelique G. BrunnerDirectorStock award8,262Jun 23, 2026
John W. HillDirectorStock award8,262Jun 23, 2026
John L. BerisfordDirectorStock award8,262Jun 23, 2026
Rachel C. GlaserDirectorStock award8,262Jun 23, 2026
Cynthia Cammett CannChief Accounting OfficerTax withholding461Jun 15, 2026
Cynthia Cammett CannChief Accounting OfficerTax withholding1,194Mar 15, 2026
Michael J. DesmaraisChief Human Resources OfficerTax withholding2,873Mar 15, 2026
Frank SimuroChief Technology OfficerTax withholding11,107Mar 15, 2026
Gene BoxerGeneral Counsel and SecretaryTax withholding428Mar 15, 2026
Lisa RugglesSenior VP, Global OperationsTax withholding2,977Mar 15, 2026

Awards, option exercises, shares withheld to cover tax and gifts all file on the same form as a purchase or a sale. None of them is a decision to trade, so they sit here rather than beside the ones that are.

Congress trades in CSGP

20 disclosures of 79 on record · median 20d of the 45 allowed

Since the trade: the stock's move from the trade date to the latest close we hold (figures as of Oct 25, 2026), not the member's result. Not investment advice.

MemberTypeActionAmount disclosedStock since the tradeTrade dateDisclosedDelay
Gilbert Ray Cisneros, Jr.StockPurchase$1,001 - $15,000+0.6%S&P 500 -1.2% · +1.7 pts vs S&P 500Aug 19, 2026Sep 10, 202622d
Ro KhannaStockSale$1,001 - $15,000+14.3%After the saleS&P 500 +2.4% · +11.9 pts vs S&P 500Jul 20, 2026Aug 7, 202618d
Ro KhannaStockPurchase$1,001 - $15,000+6.1%S&P 500 +1.3% · +4.8 pts vs S&P 500Jun 16, 2026Jul 6, 202620d
Ro KhannaStockSale$1,001 - $15,000+19.8%After the saleS&P 500 +1.7% · +18.1 pts vs S&P 500Jun 30, 2026Jul 6, 20266d
Ro KhannaStockPurchase$1,001 - $15,000+5.0%S&P 500 +1.3% · +3.7 pts vs S&P 500May 27, 2026Jun 9, 202613d
Ro KhannaStockSale$1,001 - $15,000-6.9%After the saleS&P 500 +6.4% · -13.3 pts vs S&P 500Apr 24, 2026May 11, 202617d
Ro KhannaStockSale$1,001 - $15,000-8.5%After the saleS&P 500 +10.8% · -19.2 pts vs S&P 500Apr 13, 2026May 11, 202628d
Gilbert Ray Cisneros, Jr.StockSale$1,001 - $15,000-9.8%After the saleS&P 500 +9.4% · -19.2 pts vs S&P 500Apr 14, 2026May 8, 202624d
Ro KhannaStockPurchase$1,001 - $15,000-26.8%S&P 500 +12.2% · -39.0 pts vs S&P 500Mar 10, 2026Apr 7, 202628d
Ro KhannaStockPurchase$1,001 - $15,000-20.9%S&P 500 +15.6% · -36.5 pts vs S&P 500Mar 23, 2026Apr 7, 202615d
Ro KhannaStockSale$1,001 - $15,000-17.0%After the saleS&P 500 +20.3% · -37.3 pts vs S&P 500Mar 30, 2026Apr 7, 20268d
Gilbert Ray Cisneros, Jr.StockPurchase$1,001 - $15,000-22.3%S&P 500 +14.7% · -36.9 pts vs S&P 500Mar 13, 2026Apr 7, 202625d
Ro KhannaStockSale$1,001 - $15,000-33.5%After the saleS&P 500 +12.1% · -45.6 pts vs S&P 500Feb 5, 2026Mar 9, 202632d
Ro KhannaStockPurchase$1,001 - $15,000-25.8%S&P 500 +11.2% · -37.1 pts vs S&P 500Feb 17, 2026Mar 9, 202620d
Ro KhannaStockPurchase$1,001 - $15,000-31.0%S&P 500 +10.5% · -41.5 pts vs S&P 500Feb 24, 2026Mar 9, 202613d
Gilbert Ray Cisneros, Jr.StockPurchase$1,001 - $15,000-48.0%S&P 500 +9.2% · -57.2 pts vs S&P 500Jan 28, 2026Feb 13, 202616d
Ro KhannaStockSale$1,001 - $15,000-49.5%After the saleS&P 500 +9.8% · -59.3 pts vs S&P 500Jan 6, 2026Feb 6, 202631d
Ro KhannaStockSale$1,001 - $15,000-45.1%After the saleS&P 500 +9.5% · -54.6 pts vs S&P 500Jan 13, 2026Feb 6, 202624d
Ro KhannaStockPurchase$1,001 - $15,000-45.2%S&P 500 +9.5% · -54.7 pts vs S&P 500Jan 29, 2026Feb 6, 20268d
Gilbert Ray Cisneros, Jr.StockPurchase$1,001 - $15,000-50.0%S&P 500 +10.5% · -60.5 pts vs S&P 500Dec 10, 2025Jan 12, 202633d

Since the trade is an estimate, set beside the S&P 500 over the same window, with the gap between the two in percentage points. The filing carries a band, not a fill, and a sale keeps the stock's sign, so a positive figure after a sale means the stock kept rising after it. An option row carries the underlying stock's move. A row marked n/a is one we hold no figure for.

Every Congress trade in CSGP, filterable by party, chamber, type and account.

Members of Congress reporting a position

2 members · estimate, as of Oct 25, 2026

2 members report a position (estimated). The largest estimated position is in the $15,001 - $50,000 band.

MemberParty, chamberEstimated positionShare of their portfolio
Gilbert Ray Cisneros, Jr.Democrat · House$15,001 - $50,0000.1%
William R. KeatingDemocrat · House$1,001 - $15,0000.5%

Estimate, as of Oct 25, 2026. Each position is modelled from the member's disclosed transactions and annual filings: the midpoint of each disclosed band, moved with the stock's price since the trade. It is a rough estimate of a reported position, not a figure from a filing, which is why it is shown as a band. Share of portfolio sets that estimate against the member's whole estimated public-stock portfolio.

Questions

Are insiders buying or selling CSGP?

Across the 14 most recent open-market filings shown here, 6 were purchases and 8 were sales.

Which members of Congress have traded CSGP?

Gilbert Ray Cisneros, Jr. and Ro Khanna disclosed CSGP transactions in the filings shown here.

Which members of Congress hold CSGP?

2 members of Congress report a position in CSGP in the estimate we hold as of Oct 25, 2026. The estimated positions belong to Gilbert Ray Cisneros, Jr. and William R. Keating. The estimate is built from disclosed transactions and annual filings, so it is shown as a band rather than a figure from a filing.

Is CSGP in the S&P 500 or the Nasdaq 100?

CoStar Group, Inc. is a current member of the S&P 500, per the membership list we hold as of Oct 26, 2026. Current members of either index get a page here whatever their filing history.

How quickly are CSGP trades disclosed?

Insider filings on this page reached the public a median of 1 business day after the transaction (weekends and federal holidays skipped), against the two business days Form 4 allows. Congressional disclosures took a median of 20 days, against the 45 the STOCK Act allows.

How to read a Form 4

A DECISION THE INSIDER MADE

POpen-market purchase. Bought with their own money at the market price.
SOpen-market sale. Sold on the market. A sale marked scheduled was set up in advance under a Rule 10b5-1 plan, often months before.

COMPENSATION PLUMBING

AStock award. Granted as pay, not bought.
MOption exercise. Converting options already held into shares.
FTax withholding. Shares handed back to the company to pay the tax on a grant.
GGift. Given away, with no money changing hands.

Congress rows disclose a value range rather than an exact amount, and the STOCK Act allows up to 45 days to report. Full sourcing and the limits of this data are on the methodology page. A filing is a record of a transaction, not a signal, and nothing here is investment advice.

Data as of Oct 26, 2026.

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