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Costar (CSGP) Latest Stock Analysis Report – Oct 15, 2026, 4:00 PM ET

Updated Oct 15, 2026, 4:00 PM ET

What changed since yesterday

CSGP jumps 6.3% to $32.00, a 1-month high, 3 up days in a row. Closed at $32.00, +6.28% vs the prior close of $30.11. Day range $30.45–$32.50, opened at $30.59.

Last close$32.00+6.28%
Day range30.45–32.50
Open30.59
Volume5.57M
52-week range25.89–79.08
Avg volume (20d)6.16M

CSGP daily analysis — what happened

A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.

Oct 15, 2026 — CSGP jumps 6.3% to $32.00, a 1-month high, 3 up days in a row
Oct 14, 2026 — CSGP rises 0.4% to $30.11
Oct 13, 2026 — CSGP rises 2.7% to $30.00
Oct 12, 2026 — CSGP dips 1.6% to $29.21
Oct 9, 2026 — CSGP dips 0.5% to $29.67
Oct 8, 2026 — CSGP jumps 8.0% to $29.81
Oct 7, 2026 — CSGP ends flat (-0.1%) to $27.60
Oct 6, 2026 — CSGP ends flat (-0.1%) to $27.63
Oct 5, 2026 — CSGP rises 1.0% to $27.66
Oct 2, 2026 — CSGP dips 1.2% to $27.38

CSGP latest news & SEC filings

Every SEC filing by or about CSGP in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.

Aug 21, 2026 · 8-K — Current report

Current report — a filing companies must make within 4 business days of a major event

Source: SEC EDGAR filing 0001057352-26-000072

Aug 14, 2026 · SCHEDULE 13G — Passive stake (13G)

Passive stake (13G) — an investor reported owning more than 5%

Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.

Source: SEC EDGAR filing 0001017918-26-000058

Aug 10, 2026 · 4 — Insider trade report (Form 4)

Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings

Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.

Source: SEC EDGAR filing 0001472762-26-000012

Aug 10, 2026 · 4 — Insider trade report (Form 4)

Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings

Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.

Source: SEC EDGAR filing 0001351689-26-000005

Aug 5, 2026 · 144 — Notice of proposed sale (Form 144)

Notice of proposed sale (Form 144) — an insider or affiliate plans to sell restricted or control shares

A notice of intent, not a completed sale. Any actual sale by a director or officer shows up later on Form 4.

Source: SEC EDGAR filing 0001965301-26-000108

Aug 5, 2026 · 4 — Insider trade report (Form 4)

Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings

Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.

Source: SEC EDGAR filing 0001628280-26-052968

Aug 4, 2026 · 4 — Insider trade report (Form 4)

Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings

Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).

Source: SEC EDGAR filing 0002146463-26-000005

Aug 4, 2026 · 4 — Insider trade report (Form 4)

Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings

Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).

Source: SEC EDGAR filing 0001472762-26-000010

Jul 29, 2026 · S-8 — Registration of shares for employee stock plans (S-8)

Registration of shares for employee stock plans (S-8)

Source: SEC EDGAR filing 0001193125-26-323889

Jul 29, 2026 · 10-Q — Quarterly report (unaudited financial statements for the quarter)

Quarterly report (unaudited financial statements for the quarter)

Quarter ended Jun 30, 2026:

Source: SEC EDGAR filing 0001057352-26-000066

Jul 28, 2026 · 8-K — Current report

Current report — a filing companies must make within 4 business days of a major event

This is a results-day filing: the earnings press release is attached as an exhibit.

Source: SEC EDGAR filing 0001057352-26-000061

Jul 13, 2026 · 8-K — Current report

Current report — a filing companies must make within 4 business days of a major event

Source: SEC EDGAR filing 0001057352-26-000054

Jun 25, 2026 · 8-K — Current report

Current report — a filing companies must make within 4 business days of a major event

Source: SEC EDGAR filing 0001057352-26-000048

Things to know before you trade CSGP

CSGP market data (last 20 sessions)

DateOpenHighLowCloseVolume
Oct 15, 202630.5932.5030.4532.005.57M
Oct 14, 202629.9830.2129.3030.115.75M
Oct 13, 202629.4830.0229.1130.007.36M
Oct 12, 202629.6729.9029.0329.212.77M
Oct 9, 202630.0230.1629.5429.674.09M
Oct 8, 202627.6029.8327.5829.819.47M
Oct 7, 202627.7727.8727.1727.604.95M
Oct 6, 202627.7028.2027.4627.634.58M
Oct 5, 202627.2527.6827.1827.664.93M
Oct 2, 202627.4827.8127.1527.383.74M
Oct 1, 202627.9128.2327.1027.724.63M
Sep 30, 202627.0327.5526.8627.406.69M
Sep 29, 202626.8427.1826.5226.955.19M
Sep 28, 202627.6827.7526.8527.025.18M
Sep 25, 202627.7328.6327.6028.096.66M
Sep 24, 202628.1828.5427.2827.866.50M
Sep 23, 202628.6928.6927.8928.265.66M
Sep 22, 202629.6329.6328.3128.775.28M
Sep 21, 202629.2429.6428.8429.047.10M
Sep 18, 202629.3029.9128.9629.0917.12M

About Costar

Costar (CSGP) is listed on the Nasdaq and classified by the SEC under “Services-Business Services, NEC”. Its business address is in ARLINGTON, VA. State of incorporation: DE. Fiscal year ends December 31. SEC CIK 1057352.

CSGP board of directors & executives

From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).

Directors

NameRoleLatest filing
John L BerisfordDirectorJun 24, 2026
Nana BanerjeeDirectorMar 17, 2026
Angelique G. BrunnerDirectorJun 24, 2026
Andrew C FloranceFounder and CEOAug 5, 2026
Rachel C GlaserDirectorJun 24, 2026
John W HillDirectorAug 10, 2026
Christine M MccarthyDirectorJun 24, 2026
Robert W MusslewhiteDirectorJun 24, 2026
Louise S SamsDirectorJun 24, 2026

Executive officers

NameTitleLatest filing
Gene BoxerGeneral Counsel and SecretaryMar 17, 2026
Cynthia Cammett CannChief Accounting OfficerAug 10, 2026
Michael J DesmaraisChief Human Resources OfficerMar 17, 2026
Andrew C FloranceFounder and CEOAug 5, 2026
Christian M. LownChief Financial OfficerJul 6, 2026
Robin Jack RossmannChief Financial OfficerAug 4, 2026
Lisa RugglesSenior VP, Global OperationsMar 17, 2026
Frederick G. SaintPresident, MarketplacesAug 4, 2026
Frank SimuroChief Technology OfficerMar 17, 2026

Recent insider buys & sales

DateInsiderTypeSharesPrice
Aug 7, 2026Cynthia Cammett CannSale4,788$30.78
Aug 5, 2026John W HillSale3,500$30.21
Aug 4, 2026Andrew C FloranceBuy83,300$29.89
May 1, 2026Andrew C FloranceBuy68,330$35.17
May 1, 2026Andrew C FloranceBuy3,100$35.82
Mar 6, 2026Louise S SamsBuy1,000$48.36
Mar 2, 2026Frederick G. SaintBuy20,000$45.33
Mar 2, 2026Rachel C GlaserBuy1,000$44.94
Feb 27, 2026Andrew C FloranceBuy55,720$44.52
Nov 13, 2025John W HillSale2,250$68.68
Nov 13, 2025Cynthia Cammett CannSale1,841$68.79

CSGP financials (annual, from XBRL filings)

Fiscal year endRevenueNet incomeDiluted EPSOperating cash flow
Dec 31, 2025$3.25B$7.00M0.02$430.00M
Dec 31, 2024$2.74B$139.00M0.34$393.00M
Dec 31, 2023$2.46B$375.00M0.92$490.00M
Dec 31, 2022$2.18B$369.50M0.93$478.70M
Dec 31, 2021$1.94B$292.60M0.74$469.70M

Latest balance sheet: total assets $10.14B, total liabilities $2.19B, cash $1.27B (as of Jun 30, 2026).

CSGP earnings / results-day log

DateFilingClose that day
Jul 28, 20268-K Item 2.02 (results)$30.33
Apr 28, 20268-K Item 2.02 (results)$35.96
Feb 24, 20268-K Item 2.02 (results)$49.15
Oct 28, 20258-K Item 2.02 (results)$78.23
Jul 22, 20258-K Item 2.02 (results)$85.16
Apr 29, 20258-K Item 2.02 (results)$82.70
Feb 18, 20258-K Item 2.02 (results)$75.46
Oct 22, 20248-K Item 2.02 (results)$76.87
Jul 23, 20248-K Item 2.02 (results)—
Apr 23, 20248-K Item 2.02 (results)—
Feb 20, 20248-K Item 2.02 (results)—
Oct 24, 20238-K Item 2.02 (results)—

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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 15, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.