Katherine M. Clark

Democratic / House / Massachusetts

- Net Worth Est.

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- Last Traded

Current Member Yes
Years Active 2013 - Present
Age 62
Katherine Clark was born in New Haven, Connecticut, in 1963. She earned her bachelor's degree in history from St. Lawrence University in 1985, her J.D. from Cornell Law School in 1989, and her M.P.A. from the Kennedy School of Government at Harvard University in 1997. Her professional experience includes working as an attorney, as General Counsel of the Massachusetts Office of Child Care Services, and as Prosecutor for the Colorado Attorney General's Office. From 2001 to 2007, she served on the Melrose, Massachusetts, school committee, in the Massachusetts House of Representatives from 2008 to 2010, and the Massachusetts State Senate from 2010 to 2013.

* Biography data provided through our partnership with Ballotpedia.

Supporters
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Corporate Donors
Proposed Legislation
Trades
Live Stock Portfolio
Net Worth
Revolving Door

Trade Volume by Year

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Top Traded Sectors

Trades

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Estimated excess return of the underlying stock since the transaction

Stock	Transaction	Filed	Traded	Description	Excess Return

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Net Worth

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Top Holdings

Disclosed Holdings

Ticker	Asset Type	Asset Name	Amount	Owner	Report Year	Filed

*These holdings are collected from annual financial disclosure statements. There are occasionally parsing errors, and it does not include recent transactions.

Revolving Door

Former staff of Katherine M. Clark who went on to register as lobbyists, and the clients they were disclosed as representing at the time of filing. Parsed from the covered-position disclosures on Lobbying Disclosure Act filings — see the full Revolving Door dashboard.

3 Former staff who have lobbied

4 Public companies represented

32 Clients in total

Aug 04, 2026 Most recent filing

Lobbyist	Role in this office	Disclosed clients	Lobbying firm	Latest filing
Allison Blankenship New	Senior Floor Advisor, Floor Assistant, Democratic Whip Katherine Clark; Floor Assistant, Speaker Nancy Pelosi; Legislative Assistant, Legislative Aide, Rep. Lucy McBath; Legislative Correspondent, Staff Assistant, Rep. Pramila Jayapal	F TISI UAL AMERICAN KRATOM ASSOCIATION +14 more	MICHAEL BEST STRATEGIES LLC	Aug 04, 2026
Keith Stern New	Sr Advsr, House Dem Whip Katherine Clark; Dir of Floor Ops, House Spkr Pelosi; Dir of Floor Ops, House Dem Leader Pelosi; COS Rep James P. McGovern/House Rules Comm (shared); Rules Assoc, Rep James P. McGovern/House Rules Comm (shared)	HPE BROWN UNIVERSITY CHILDRENS HOSPITAL LOS ANGELES CHOBANI YOGURT +9 more	CORNERSTONE GOVERNMENT AFFAIRS, INC.	Jul 20, 2026
James Santos New	Rep Katherine Clark: Military Liaison & Constituent Services Rep; Office of the U/S of Defense (A&S): Special Assistant to the U/S of Defense; Office of Research Development & Acquisition, Dept of the Navy: Special Assistant for Maritime Statecraft	ASSOCIATION FOR UNCREWED VEHICL…	ASSOCIATION FOR UNCREWED VEHICLE SYSTEMS INTERNATIONAL	Jul 17, 2026

Spending in Support of Katherine M. Clark

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Outside Spending

Contributor	Support/Oppose	Amount	Date	Filed	Amendment	Details

Top Receipts

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* Note: This data may contain refunds given to the committee. Names are hidden for individual donations below $250,000.

Outside Spending

Contributor	Support/Oppose	Amount	Date	Filed	Amendment	Memo Text

Other Candidates in District

Candidate	Party	Fundraising over Last Year	Track

Corporate PAC Donors

Ticker	Company Committee	Recipient Committee	Amount	Date	Party	Cycle

Proposed Legislation

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Title	Introduced	Latest Action Date