CoStar Group, Inc. (CSGP)
Nasdaq: CSGP · Services-Business Services, NEC · Arlington, VA · filing with the SEC since 1998
Grade6.1
◀ Past 6.8● Present 5.5▶ Future 6.1
Who runs CoStar Group, Inc.
Officers and directors as they report to the SEC on Forms 3, 4 and 5, named as filedChief executive, as filed
Florance Andrew C
Founder and CEO. First filing Mar 2006, latest Aug 5, 2026, 14 filings in all.
Officers reporting now
10
of 18 people with a filing in the last fifteen months
Directors reporting now
8
27 people on the record since 2006
Officerssales are open-market, Nov 10, 2025 to Nov 10, 2026
| Name | Title as filed | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Harding Catrina | Chief Human Resources Officer | Nov 2026 | Nov 10, 2026 | none |
| Rossmann Robin Jack | Chief Financial Officer | Aug 2026 | Oct 16, 2026 | none |
| Cann Cynthia Cammett | Chief Accounting Officer | Jul 2024 | Aug 10, 2026 | 2 · $300,000 |
| Florance Andrew C | Founder and CEO | Mar 2006 | Aug 5, 2026 | none |
| Saint Frederick G. | President, Marketplaces | Oct 2020 | Aug 4, 2026 | none |
| Lown Christian M. | Chief Financial Officer | Jul 2024 | Jul 6, 2026 | none |
| Desmarais Michael J | Chief Human Resources Officer | Apr 2022 | Mar 17, 2026 | none |
| Simuro Frank | Chief Technology Officer | Apr 2022 | Mar 17, 2026 | none |
| Boxer Gene | General Counsel and Secretary | Apr 2022 | Mar 17, 2026 | none |
| Ruggles Lisa | Senior VP, Global Operations | Sep 2017 | Mar 17, 2026 | none |
Directorssales are open-market, Nov 10, 2025 to Nov 10, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Hill John W | director | Oct 2012 | Aug 10, 2026 | 2 · $300,000 |
| Berisford John L | director | Apr 2025 | Jun 24, 2026 | none |
| Brunner Angelique G. | director | Aug 2023 | Jun 24, 2026 | none |
| Glaser Rachel C | director | Apr 2025 | Jun 24, 2026 | none |
| Mccarthy Christine M | director | Apr 2025 | Jun 24, 2026 | none |
| Musslewhite Robert W | director | Dec 2019 | Jun 24, 2026 | none |
| Sams Louise S | director | Dec 2019 | Jun 24, 2026 | none |
| Banerjee Nana | director | Mar 2026 | Mar 17, 2026 | none |
Earlier names on the record9, newest filing first
Klein Michael R · director · last filing Dec 2024Nassetta Christopher J · director · last filing Dec 2024Kaplan Laura Cox · director · last filing Aug 2024Wheeler Scott T · officer · last filing Apr 2024Glosserman Michael J · director · last filing Nov 2023Linnington Matthew · officer · last filing Aug 2020Steinberg David Jay · director · last filing Mar 2020Carchedi Francis · officer · last filing Oct 2018Haber Warren H · director · last filing Sep 2018
A person is listed as reporting now after a filing in the last fifteen months. The record shows when someone last filed; it does not say why they stopped. Each name links to the filings on sec.gov.