CoStar Group

Current directors and officers who also hold a role at another S&P 500 company.

• Christian M. LownALL · CFO
• Christine M. McCarthyPG · Director
• Louise S. SamsROL · Director
• Robert W. MusslewhiteCAH · Director

Latest Schedule 13D/13G filing per holder. Holders that reported falling below 5% are not shown. Index funds usually report once a year.

No 5% holder filings parsed yet for this company.

Open-market purchases and sales reported on Form 4. Grants, option exercises and tax withholding are excluded.

Every 8-K with Item 5.02 (departure, election or appointment of directors and officers). The text is the first paragraph of the item.

1. Jul 13, 2026

   On July 13, 2026, the Board of Directors (the “Board”) of CoStar Group, Inc. (the “Company” or “CoStar Group”) appointed Robin Rossmann to serve as the Company’s Chief Financial Officer, effective July 31, 2026 (“Effective Date”). Mr. Rossmann, 45, who currently serves as the Company’s Managing Director, Europe, and is a member of the Company's executive leadership team, brings more than 20 years of financial, operational and strategic leadership experience to the role of Chief Financial Officer. Over his nearly seven years with the Company, Mr. Rossmann has led several of CoStar Group’s businesses internationally, distinguished himself by dramatically improving the margins of CoStar Group's European business while delivering double-digit revenue growth and launching CoStar in France.

   Read the 8-K filing
2. Jun 25, 2026

   On June 23, 2026, at the Annual Meeting of Stockholders (the “Annual Meeting”) of CoStar Group, Inc. (the “Company” or “our”), the stockholders of the Company, upon the recommendation of the Board of Directors of the Company (the “Board”), approved the CoStar Group, Inc. 2026 Employee Stock Purchase Plan (the “2026 ESPP”), which was approved by the Board on April 27, 2026 and became effective upon stockholder approval at the Annual Meeting. The 2026 ESPP replaces the Company’s Second Amended and Restated Employee Stock Purchase Plan (the “2021 ESPP”), and no further shares will be issued pursuant to the 2021 ESPP. The 2026 ESPP authorizes the issuance of 2,500,000 shares of the Company’s common stock.

   Read the 8-K filing
3. Mar 16, 2026

   On March 15, 2026, the Board of Directors (the “Board”) of CoStar Group, Inc. (the “Company”) appointed Nana Banerjee to serve on the Board, effective immediately. Following his appointment to the Board, Mr. Banerjee will be entitled to participate in the Company’s director compensation program, which is described in Exhibit 10.20 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2025, filed with the Securities and Exchange Commission (the “SEC”) on February 26, 2026. Mr. Banerjee has not been named to serve on any committee of the Board at this time.

   Read the 8-K filing
4. Feb 13, 2026

   On February 13, 2026, CoStar Group, Inc., a Delaware corporation (“CoStar Group” or the “Company”), amended the CoStar Group Inc. Executive Severance Plan (as amended, the “Amended Severance Plan”) to remove a clause from the definition of “Change in Control” (the “director clause”) relating to the composition of the Board of Directors of the Company (the “Board”). All other terms and provisions of the Amended Severance Plan remain unchanged and in full force and effect. The director clause was designed in consultation with the Compensation Committee of the Board’s (the “Compensation Committee”) independent compensation consultant and other advisors to protect management continuity at the Company, and is comparable to executive severance programs across the Company’s peer group.

   Read the 8-K filing
5. Jan 7, 2026

   On January 7, 2026, CoStar Realty Information, Inc., a subsidiary of CoStar Group, Inc. (“CoStar” or the “Company”), entered into a second amendment (the “Amendment”) to its employment agreement with Andrew C. Florance, Founder and Chief Executive Officer (“CEO”) of the Company (the “Employment Agreement”). The Amendment, which became effective as of January 1, 2026, deletes Section 22 (Special Reimbursement) of the Employment Agreement, eliminating a legacy tax gross up entitlement related to Sections 280G and 4999 of the Internal Revenue Code of 1986, as amended, which had been in Mr. Florance's employment agreement since April 1998.

   Read the 8-K filing
6. Jun 27, 2025

   On June 26, 2025, at the Annual Meeting of Stockholders (the “Annual Meeting”) of CoStar Group, Inc. (the “Company” or “our”), the stockholders of the Company, upon the recommendation of the Board of Directors of the Company (the “Board”), approved the CoStar Group, Inc. 2025 Stock Incentive Plan (the “2025 Plan”), which was approved by the Board on April 28, 2025 (the “Effective Date”), subject to stockholder approval. The 2025 Plan, among other things, permits the grant of stock options, stock appreciation rights, restricted stock and restricted stock units to employees, officers, consultants and directors of the Company and its subsidiaries. The 2025 Plan replaces the CoStar Group, Inc. 2016 Stock Incentive Plan (the “2016 Plan”), and no further grants will be made pursuant to the 2016 Plan.

   Read the 8-K filing
7. Apr 7, 2025

   Effective as of April 6, 2025, the Board elected each of Christine M. McCarthy, John Berisford and Rachel C. Glaser to serve on the Board. Following their appointment to the Board, each of Christine M. McCarthy, John Berisford and Rachel C. Glaser will be entitled to participate in the Company’s director compensation program, which generally provides for an annual cash retainer for service on the Board of $50,000 (payable in biannual installments) and a restricted stock award for service on the Board with a grant date value of $250,000, which will be granted on or around the first regularly scheduled Board meeting following the 2025 Annual Meeting and which will vest in four equal annual installments, subject to continued service on the vesting date.

   Read the 8-K filing
8. Jul 11, 2024

   On July 8, 2024, the Board of Directors of CoStar Group, Inc. (“CoStar” or the “Company”) appointed Cynthia Eakin as Chief Accounting Officer of the Company, effective immediately. In her role, Ms. Eakin will serve as the Company's principal accounting officer, effective immediately, and will report to Christian Lown, who will continue to serve in his role as the Company's Chief Financial Officer and principal financial officer. Ms. Eakin, age 57, has served in multiple other senior management and financial leadership roles at CoStar since joining the Company in October 2016. In her most recent role as Senior Vice President of Investor Relations, Ms. Eakin was responsible for working with investors, shareholders and analysts to convey CoStar’s performance, business strategy, and strategic positioning.

   Read the 8-K filing
9. Jun 18, 2024

   On June 18, 2024, CoStar Group, Inc. (“CoStar” or the “Company”) announced the appointment of Christian Lown as Chief Financial Officer of the Company, effective July 1, 2024. Mr. Lown will also serve as the Company's principal accounting officer. Mr. Lown, age 54, has served as executive vice president and chief financial officer of Freddie Mac since June 2020. In this position, he was responsible for the company’s accounting, capital oversight, sustainability, financial controls, investor relations, financial planning and reporting, procurement and tax functions. Previously, he served as EVP and CFO at Navient Corporation from 2017 to 2020. Prior to joining Navient, Mr.

   Read the 8-K filing
10. Feb 20, 2024

    On February 20, 2024, Scott Wheeler notified the Company of his intention to retire from his position as Chief Financial Officer. Mr. Wheeler has served as the Company’s Chief Financial Officer since 2016, and the Company extends its gratitude to Mr. Wheeler for his years of service and contributions to the Company. Mr. Wheeler’s decision to step down is not the result of any disagreement with the Company on any matter relating to the Company’s operations, policies, or practices. The Company plans to initiate a process to identify a successor. Mr. Wheeler plans to continue as Chief Financial Officer through June 15, 2024 to help facilitate the transition of his responsibilities.

    Read the 8-K filing
11. Aug 1, 2023

    On July 28, 2023, the Board of Directors (the "Board") of CoStar Group, Inc. ("CoStar" or the "Company") appointed Angelique Brunner to serve on its Board of Directors, effective August 1, 2023. Ms. Brunner is entitled to participate in CoStar's director compensation program, which is described in the Company's proxy statement on Schedule 14A filed with the Securities and Exchange Commission on April 27, 2023. Ms. Brunner has not been named to serve on any committee of the Board at this time.

    Read the 8-K filing
12. Oct 1, 2020

    On September 27, 2020, Matthew Linnington provided notice of his resignation as Executive Vice President, Sales of CoStar Group, Inc. (the “Company”). Mr. Linnington has agreed to continue to serve the Company in order to assist with the transition and intends to leave the Company’s employ before the end of the fiscal year in order to pursue personal interests.

    Read the 8-K filing
13. Dec 18, 2019

    On December 12, 2019, the Board of Directors (the “Board”) of the Company increased the size of the Board from seven to nine members and elected Louise S. Sams and Robert W. Musslewhite to fill the vacancies created as a result of the increase in the number of Board members. Ms. Sams was the Executive Vice President and General Counsel of Turner Broadcasting System, Inc., a television and media conglomerate, from 2000 until September 2019. Ms. Sams also served as President, Turner Broadcasting System International, Inc. from September 2003 until May 2012. As General Counsel, Ms. Sams oversaw legal work relating to all of the business activities of Turner and its subsidiaries worldwide.

    Read the 8-K filing
14. Jul 24, 2018

    On July 23, 2018, Francis A. Carchedi, Executive Vice President, Corporate Development, provided notice to the company of his plan to retire. Mr. Carchedi plans to retire before the end of fiscal year 2018, after assisting with the transition of his responsibilities.

    Read the 8-K filing
15. Apr 27, 2016

    On April 22, 2016, the Board of Directors (the “Board”) of the Company increased the size of the Board from seven to eight members and elected Laura Cox Kaplan to fill the vacancy created as a result of the increase in the number of Board members. Ms. Kaplan has more than 24 years of experience in communications, corporate governance, stakeholder engagement and public policy strategy. She lends her experience and voice publicly to a range of topics important to the public and private sectors including career and talent development, the importance of developing a diversified workforce and of the value of diversified teams, women’s leadership, and corporate governance. As a result of her experience, Ms. Kaplan brings to the Board valuable leadership, management and corporate governance experience. Ms.

    Read the 8-K filing

Proxy statements (DEF 14A): 2026 · 2025 · 2024 · 2023 · 2022 · 2021

From the company's 10-K XBRL data (SEC companyfacts).

People who stopped filing as an insider of this company. “Last filing” is the last Form 3/4/5, an upper bound on when they left.