Public ownership evidence

CoStar Group Inc (CSGP) Ownership Disclosures

Read CSGP insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-08-11T03:59:59.999Z

Recent Form 4 activity

2026-08-112026-08-07Cann Cynthia CammettS4,788Not reported
2026-08-112026-08-05Hill John WS3,500Not reported
2026-08-062026-08-04FLORANCE ANDREW CP83,300Not reported
2026-08-052026-07-31Rossmann Robin JackA34,771Not reported
2026-08-052026-07-31Cann Cynthia CammettA26,078Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

Cornerstone Financial Management LLC2026-06-302026-08-2938$1,076None
Cornerstone Financial Management LLC2026-03-312026-08-2959$2,380None
Cornerstone Financial Management LLC2025-12-312026-08-2953$3,564None
Advisors Asset Management, Inc.2020-06-302026-08-28189$134,317None
Corient Private Wealth LP2026-06-302026-08-2881,676$2,313,066None
Principia Wealth Advisory, LLC2026-06-302026-08-27117$3,313None
Principia Wealth Advisory, LLC2026-03-312026-08-2794$3,792None
Advisors Asset Management, Inc.2020-12-312026-08-2732$30,000None
Advisors Asset Management, Inc.2020-09-302026-08-27106$89,942None
Advisors Asset Management, Inc.2019-12-312026-08-26510$305,133None
CYBER HORNET ETFs LLC2026-06-302026-08-251,112$31,492None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25680,684$19,276,971None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2519,276,971$680,684,000None
Advisors Asset Management, Inc.2020-03-312026-08-22317$186,146None
ASHFORD CAPITAL MANAGEMENT INC2026-06-302026-08-2288,100$2,494,992None
GILL CAPITAL PARTNERS, LLC2026-06-302026-08-2150$1,416None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-20158,582$4,491,050None
Advisors Asset Management, Inc.2019-03-312026-08-192,315$1,079,762None
Advisors Asset Management, Inc.2019-09-302026-08-191,664$987,085None
Advisors Asset Management, Inc.2019-06-302026-08-191,984$1,099,255None
Twin Lakes Capital Management, LLC2026-06-302026-08-19598$16,935None
Orion Capital Management LLC2026-06-302026-08-19100$2,832None
Liontrust Investment Partners LLP2026-06-302026-08-1935,058$992,843None
Ensign Peak Advisors, Inc2026-03-312026-08-192,734,289$110,301,218None
Ensign Peak Advisors, Inc2025-12-312026-08-19578,356$38,888,657None
Ensign Peak Advisors, Inc2025-09-302026-08-19698,001$58,890,344None
Fulcrum Asset Management LLP2026-06-302026-08-19656$19,234None
Livforsakringsbolaget Skandia, Omsesidigt2026-06-302026-08-192,100$59,430None
PIN OAK INVESTMENT ADVISORS INC2026-06-302026-08-191,672$47,000None
NORTH STAR ASSET MANAGEMENT INC2026-06-302026-08-19220$6,230None
NORTH STAR ASSET MANAGEMENT INC2026-06-302026-08-19111,853$3,167,677None
Rakuten Investment Management, Inc.2026-06-302026-08-1968,040$1,994,932None
Caitlin John, LLC2026-06-302026-08-1812$340None
Corient Private Wealth LP2026-06-302026-08-1882,804$2,345,395None
Empowered Funds, LLC2026-06-302026-08-188,195$232,082None
Empowered Funds, LLC2026-06-302026-08-185,506$155,930None
Empowered Funds, LLC2026-06-302026-08-182,807$79,494None
Empowered Funds, LLC2026-06-302026-08-18666$18,861None
Transamerica Financial Advisors, LLC2026-06-302026-08-181,156$32,737None
UNITED CAPITAL FINANCIAL ADVISORS, LLC2026-06-302026-08-1824,222$685,967None
CAPSTONE INVESTMENT ADVISORS, LLC2026-06-302026-08-1822,000$623,040Put
CAPSTONE INVESTMENT ADVISORS, LLC2026-06-302026-08-1814,117$399,793None
Fayez Sarofim & Co2026-06-302026-08-1825,791$730,401None
Fayez Sarofim & Co2026-06-302026-08-1865,740$1,861,757None
Jefferies Financial Group Inc.2026-06-302026-08-18148,731$4,212,063None
FORMULA GROWTH LTD2026-06-302026-08-1834,000$962,880None
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO2026-06-302026-08-18117,069$3,315,394None
CENTAURUS FINANCIAL, INC.2026-06-302026-08-1813,390$379,000None
EFG International AG2026-06-302026-08-15865$24,497None
Blue Sparrow, LLC /DE2026-06-302026-08-156,160$174,451None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Advisors Asset Management, Inc. ↗Corient Private Wealth LP ↗Principia Wealth Advisory, LLC ↗Principia Wealth Advisory, LLC ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗

Recent Congressional disclosures

Ro Khanna2026-10-082026-09-25purchase$1,001 - $15,000
Ro Khanna2026-10-082026-09-11purchase$1,001 - $15,000
Gilbert Ray Cisneros, Jr.2026-09-112026-08-19purchase$1,001 - $15,000

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.