Catrina Harding filed an initial statement of beneficial ownership with the SEC on November 10, 2026, disclosing her new role as Chief Human Resources Officer at CoStar Group, Inc. (NASDAQ:CSGP), with an event date of November 9, 2026.

Key Highlights

  • New Officer: Catrina Harding disclosed her position as Chief Human Resources Officer of CoStar Group, Inc.
  • Event Date: The date of the event requiring the statement was November 9, 2026.
  • No Securities Held: The filing states explicitly that "No securities are beneficially owned" by the reporting person.
  • Signed by Attorney-in-Fact: The form was signed by Lisa M. Tanzi as attorney-in-fact for Catrina Harding on November 10, 2026.
  • Exchange and Ticker: CoStar Group is listed on NASDAQ under the symbol CSGP.

Catrina Harding's Initial Ownership Disclosure at CoStar Group

CoStar Group, Inc. is a provider of commercial real estate information, analytics, and online marketplaces, headquartered at 1201 Wilson Boulevard, Arlington, Virginia 22209. The company operates platforms used by commercial real estate professionals across research, listing, and transaction services.

According to the filing, Catrina Harding assumed the role of Chief Human Resources Officer at CoStar Group, with November 9, 2026 identified as the date of the event requiring the statement. As an officer-level insider subject to Section 16(a) of the Securities Exchange Act of 1934, Harding was required to file this initial beneficial ownership statement upon taking on that role. The filing confirms she is classified as an officer and not as a director or 10% owner.

Both Table I, covering non-derivative securities, and Table II, covering derivative securities such as options, warrants, and convertible instruments, were left blank. The filing includes the remark that "No securities are beneficially owned," indicating that Harding held no direct or indirect beneficial ownership in CoStar Group shares or derivative securities as of the event date. The filing was submitted by Lisa M. Tanzi acting as attorney-in-fact under a Power of Attorney listed as Exhibit 24.

What Was Disclosed

CoStar Group filed an initial beneficial ownership statement on behalf of newly appointed Chief Human Resources Officer Catrina Harding, dated November 10, 2026, covering an event date of November 9, 2026, and reporting no beneficial ownership of any securities.