Keith Castaldo

Government Relations

Keith brings more than a decade of experience on Capitol Hill to the team at Subject Matter. He most recently worked as general counsel to Democratic Sen. Kirsten Gillibrand of New York, driving strategy, coalition building, business outreach and policy for her major legislative initiatives. Prior to his time in the Senate, he was a tax counsel and economic policy advisor to a senior member of the Ways and Means Committee and the Budget Committee. Keith works with clients to strategize how their assets and goals match the priorities of members of Congress and the Administration. He also helps train executives unfamiliar with D.C. on how to be their own best advocate. He has a deep policy background on a broad range of issues, including tax and finance, data security and technology, industrial policy and ethics and campaign finance. Keith maintains strong ties to New York City and New York State, and spent much of his career leading policy efforts pertaining to the finances and technologies of companies, ranging from start-ups to multinationals, across industries.

  • Lives with his wife, son and dog (Muddy) in D.C.
  • Is a stock photo of a Senate staffer
  • Builds motorcycles
Meet the Team