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In litigation — no settlement yetother

CoStar Group Hotel Antitrust Class Action

Verified October 24, 2026Found via the federal court docketHow ClaimWatch verifies cases

Still being litigated: the claims below are allegations, not findings, and there is no settlement, claim form or payout yet.

Where this case stands

In litigation

The case has been filed and is being fought in court. There is no settlement, no claim form and no payout yet; many class actions are dismissed or never certified.

Pending in the District Court, W.D. Washington (No. 2:24-cv-00229).

  1. February 20, 2024
    Case filed

What happened

A proposed class action against CoStar Group Inc appears to concern antitrust claims, as indicated by the nature of suit. Docket entries also name hotel companies such as Hilton and Accor as defendants, suggesting the case may involve alleged anticompetitive conduct affecting hotel pricing or distribution. The allegations are unproven and the case is ongoing.

Do you qualify?

No settlement exists yet, so there is nothing to file and no class definition to check. If the case settles, the settlement will define exactly who qualifies — watch this case and we'll let you know.

How to file

There is no claim to file yet. If this case reaches a settlement, a claim process will open — usually with an official settlement website and a filing deadline.

Common questions

Can I file a claim in the CoStar Group Hotel Antitrust Class Action case?
No. The case is still being litigated — there is no settlement, no claim form, and no payout. It was filed February 20, 2024 in the District Court, W.D. Washington (No. 2:24-cv-00229).What a class action lawsuit is →
Who are the attorneys in the CoStar Group Hotel Antitrust Class Action?
For the plaintiffs: Rio Pierce (HAGENS BERMAN SOBOL SHAPIRO LLP); Steve W. Berman (HAGENS BERMAN SOBOL SHAPIRO LLP (WA)); Xiaoyi Fan (HAGENS BERMAN SOBOL SHAPIRO LLP (WA)); Theodore J Wojcik (HAGENS BERMAN SOBOL SHAPIRO LLP (WA)). For CoStar Group Inc: Michael J Ewart (HILLIS CLARK MARTIN & PETERSON); Jessica C. Kerr (HILLIS CLARK MARTIN & PETERSON); Carrie C Mahan (SIDLEY AUSTIN LLP (DC)); Chad Samuel Hummel (FAEGRE DRINKER BIDDLE & REATH LLP (LOS ANGELES)). From the public court docket.

Who's involved

Plaintiffs

  • Daniel Smith
  • Daniel Kassl
  • David Concepcion
  • Heriberto Valiente
  • Freddy Barajas
  • Alicia Coakley
  • Jeanette Portillo

Defendants

  • STR LLC
  • Hyatt Corporation
  • Hilton Domestic Operating Company Inc
  • Six Continents Hotels Inc
  • Accor Management US Inc
  • Marriott International Inc
  • Hilton Worldwide Holdings Inc
  • STR Inc

+ 4 more

Counsel for plaintiffs

Counsel for defendants

Other cases these firms appear in

From the public court docket, contact details as filed; not an endorsement.

In the news

Headlines via NewsAPI.

Guides:What is a class action lawsuit?How class membership worksYour options as a class member

Summarised from public settlement documents; confirm terms on the official settlement website. ClaimWatch is not a law firm, and filing a claim is free.

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