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Who Lobbies for Costar Group Inc
Every firm filing a lobbying report has to name the individuals who worked the account and disclose the covered government positions they held. These are the people named on Costar Group Inc's filings who came out of such a job.
What CSGP spends on lobbying →Former staff lobbying
4
Members they worked for
8
named unambiguously
Position named as filed
1
agency or committee, not a member
Latest filing
2026
Former staff now lobbying
Sorted by how many members someone worked for. The chips in the last column are the other companies each person is also registered for.
| Lobbyist | Previously worked for |
|---|---|
| Jerr RosenbaumLegislative Director, Sen. John Cornyn; Chief of Staff, Rep. Robert Hurt; Chief of Staff, Rep. Jack Kingston; Chief of Staff, Rep. Virgil Goodefiled 2026CSGP | John Cornyn· Legislative DirectorRobert Hurt· Chief of StaffJack Kingston· Chief of StaffVirgil Goode· Chief of Staff |
| James GrimmChief Counsel, Policy and Strategy, Counsel, Chief Adviser, Policy, Strategy and Communications, Rep. Jim Jordan. Deputy Chief of Staff, Legislative Director, Senior Staff Member, Rep. Darrell Issa. Senior Staff Member, Rep. Jason Chaffetzfiled 2026CSGP | |
| Lauren ReamyDeputy Chief of Staff/Legislative Director/Legislative Assistant, Senator Marco Rubio; Professional Staff Member/Staff Assistant, Senate Judiciary Committeefiled 2026CSGP | |
| Timothy HanneganU.S. General Accounting Officefiled 2026CSGP | No member named |
Source: quarterly LD-2 lobbying reports filed under the Lobbying Disclosure Act. A member is linked only where the filing names them unambiguously; positions naming an agency, a committee or a surname shared by several members are shown as filed but not linked. Moving from government to lobbying is lawful and disclosed, which is why it is possible to count it here at all.
More on CSGP
Company overviewEverything on CSGP in one place, with the price.SEC filingsWhat CSGP's 8-Ks say happened: results, departures, auditor changes.Insider tradingWhat CSGP's own officers and directors buy and sell.Executive payWhat CSGP awarded its chief executive, and what it became.Who owns itEvery manager reporting a position in CSGP.Funds holding itWhich funds and ETFs hold CSGP, and how big a bet.LobbyingWhat CSGP spends lobbying Congress, and on what.Federal contractsWhat federal agencies pay CSGP.PatentsWhat CSGP is filing at the patent office.