CapitolMarkets
Katherine M. Clark
U.S. Representative

Katherine M. Clark

DHouseMassachusetts · District 05

U.S. Representative (D) for Massachusetts, 63 years old, formerly district attorney.

Born
New Haven, New Haven County, Conn., 1963
Prior career
  • lawyer
  • district attorney
  • attorney
  • prosecutor
Education
  • B.A. Saint Lawrence University (1985)
  • J.D. Cornell University (1989)
Full biography

CLARK, Katherine M., a Representative from Massachusetts; born in New Haven, New Haven County, Conn., July 17, 1963; B.A., Saint Lawrence University, Canton, N.Y., 1985; J.D., Cornell University, Ithaca, N.Y., 1989; M.P.A., John F. Kennedy School of Government, Harvard University, Cambridge, Mass., 1997; lawyer, private practice; lawyer, Colorado district attorney's council; general counsel, Massachusetts state office of child care services; policy division chief, Office of the Attorney General, State of Massachusetts; clerk, federal court, 1990-1991; prosecutor, Office of the Attorney General, State of Colorado, 1991-1993; member of the Melrose, Mass. school committee, 2001-2007; member of the Massachusetts state house of representatives, 2008-2010; member of the Massachusetts state senate, 2010-2013; elected as a Democrat to the One Hundred Thirteenth Congress, by special election, to fill the vacancy caused by the resignation of United States Representative Edward J. Markey, and to the six succeeding Congresses (December 10, 2013-present); assistant Speaker (One Hundred Seventeenth Congress); minority whip (One Hundred Eighteenth and One Hundred Nineteenth Congresses).

Source: U.S. Congress Bioguide / public-record corporate filings.

Year-to-date performance
No priced trades disclosed this year yet.
Numbers populate once a disclosed trade is in a public-equity ticker we can price.
Profitable trades
No activity in window
House rank
#26/85
40
Total trades
$0
Volume YTD
62d
Avg hold
0
Conflicts

Track record by window

1 year
Gross flow$1.1M
Trades5
Bought / Sold4·1
Open book80%
5 years
+$4.2K
+53.0%
Gross flow$2.8M
Trades75
Bought / Sold28·45
Open book38%
Public-record gap+48.8%

Disclosed trades · 40

All filings →
Filed Oct 3, 2025·traded Sep 17, 2025
soldProcter & Gamble Company (PG)(PG)$15K-$50K
16 days to disclose
Flat·+0.0%
+4.2% vs S&P 500
Filed Apr 4, 2024·traded Mar 1, 2024
sold
N
Common Stock (NYCB)(NYCB)$1K-$15K
34 days to discloseprice pending
Filed Apr 4, 2024·traded Mar 1, 2024
sold
N
Common Stock (NYCB)(NYCB)$1K-$15K
34 days to discloseprice pending
Filed Nov 6, 2023·traded Oct 24, 2023
boughtCoca-Cola Company (KO)(KO)$250K-$500K
13 days to disclose
Good buy·+$140.4K+37.4%
31.0% vs S&P 500
Filed Jun 8, 2023·traded Apr 8, 2022
exchanged
W
A (WBD)(WBD)$1K-$15K
426 days to disclose · 381 past 45-day windowprice pending
Filed Jun 8, 2023·traded Apr 8, 2022
exchanged
W
A (WBD)(WBD)$1K-$15K
426 days to disclose · 381 past 45-day windowprice pending
Filed Oct 14, 2021·traded Sep 16, 2021
sold
E
Edwards lifesciences Corporation (EW)(EW)$1K-$15K
28 days to disclose
Flat·+0.0%
+59.6% vs S&P 500
Filed Oct 14, 2021·traded Sep 16, 2021
sold
A
Shares (AY)(AY)$1K-$15K
28 days to discloseprice pending
Filed Oct 14, 2021·traded Sep 16, 2021
sold
C
- Ordinary Shares (CCEP)(CCEP)$1K-$15K
28 days to disclose
Flat·+0.0%
+59.6% vs S&P 500
Filed Oct 14, 2021·traded Sep 16, 2021
soldHoneywell International Inc. (HON)(HON)$1K-$15K
28 days to disclose
Flat·+0.0%
+59.6% vs S&P 500
Filed Oct 14, 2021·traded Sep 16, 2021
soldMastercard Incorporated (MA)(MA)$1K-$15K
28 days to disclose
Flat·+0.0%
+59.6% vs S&P 500
Filed Oct 14, 2021·traded Sep 16, 2021
soldStock (MRK)(MRK)$1K-$15K
28 days to disclose
Flat·+0.0%
+59.6% vs S&P 500
Filed Oct 14, 2021·traded Sep 16, 2021
soldMicrosoft Corporation (MSFT)(MSFT)$1K-$15K
28 days to disclose
Flat·+0.0%
+134.4% vs S&P 500
Filed Oct 14, 2021·traded Sep 16, 2021
sold
N
Novo Nordisk A/S (NVO)(NVO)$1K-$15K
28 days to disclose
Flat·+0.0%
+59.6% vs S&P 500
Filed Oct 14, 2021·traded Sep 16, 2021
soldPepsico, Inc. (PEP)(PEP)$1K-$15K
28 days to disclose
Flat·+0.0%
+59.6% vs S&P 500
Filed Oct 14, 2021·traded Sep 16, 2021
sold
S
Depositary Shares (SONY)(SONY)$1K-$15K
28 days to disclose
Flat·+0.0%
+59.6% vs S&P 500
Filed Oct 14, 2021·traded Sep 16, 2021
soldManufacturing Company ltd. (TSM)(TSM)$1K-$15K
28 days to disclose
Flat·+0.0%
+59.6% vs S&P 500
Filed Oct 14, 2021·traded Sep 16, 2021
soldOracle Corporation (ORCl)(ORCL)$1K-$15K
28 days to discloseprice pending
Filed Oct 14, 2021·traded Sep 16, 2021
sold
S
S&P global Inc. (SPgI)(SPGI)$1K-$15K
28 days to discloseprice pending
Filed Aug 15, 2021·traded Jul 27, 2021
boughtMicrosoft Corporation (MSFT)(MSFT)$1K-$15K
19 days to disclose
Good buy·+$4.2K+53.0%
89.1% vs S&P 500
Filed Aug 15, 2021·traded Jul 27, 2021
soldCisco Systems, Inc. (CSCO)(CSCO)$1K-$15K
19 days to disclose
Flat·+0.0%
+62.6% vs S&P 500
Filed Aug 15, 2021·traded Jul 27, 2021
boughtCisco Systems, Inc. (CSCO)(CSCO)$1K-$15K
19 days to disclose
Good buy·+$4.9K+60.9%
1.7% vs S&P 500
Filed Aug 15, 2021·traded Jul 27, 2021
sold
I
Iron Mountain Incorporated (IRM)(IRM)$1K-$15K
19 days to disclose
Flat·+0.0%
+62.6% vs S&P 500
Filed Aug 15, 2021·traded Jul 27, 2021
boughtStock (MRK)(MRK)$1K-$15K
19 days to disclose
Good buy·+$3.5K+44.3%
18.2% vs S&P 500
Filed Aug 15, 2021·traded Jul 27, 2021
boughtStock (MRK)(MRK)$1K-$15K
19 days to disclose
Good buy·+$3.5K+44.3%
18.2% vs S&P 500
Filed Aug 15, 2021·traded Jul 27, 2021
soldMicrosoft Corporation (MSFT)(MSFT)$1K-$15K
19 days to disclose
Flat·+0.0%
+142.0% vs S&P 500
Filed Aug 15, 2021·traded Jul 27, 2021
sold
O
Orange (ORAN)(ORAN)$1K-$15K
19 days to discloseprice pending
Filed Aug 15, 2021·traded Jul 27, 2021
boughtVisa Inc. (V)(V)$1K-$15K
19 days to disclose
Good buy·+$1.9K+23.1%
39.4% vs S&P 500
Filed Aug 15, 2021·traded Jul 27, 2021
sold
I
Iron Mountain Incorporated (IRM)(IRM)$1K-$15K
19 days to disclose
Flat·+0.0%
+62.6% vs S&P 500
Filed Aug 15, 2021·traded Jul 27, 2021
boughtHoneywell International Inc. (HON)(HON)$1K-$15K
19 days to disclose
Bad buy·$170-2.1%
64.7% vs S&P 500
Filed Aug 15, 2021·traded Jul 27, 2021
boughtHoneywell International Inc. (HON)(HON)$1K-$15K
19 days to disclose
Bad buy·$170-2.1%
64.7% vs S&P 500
Filed Aug 15, 2021·traded Jul 27, 2021
sold
E
Edwards lifesciences Corporation (EW)(EW)$1K-$15K
19 days to disclose
Flat·+0.0%
+62.6% vs S&P 500
Filed Aug 15, 2021·traded Jun 4, 2021
bought
A
Shares (AY)(AY)$1K-$15K
72 days to disclose · 27 past 45-day windowprice pending
Filed Aug 15, 2021·traded Jun 4, 2021
bought
A
Shares (AY)(AY)$1K-$15K
72 days to disclose · 27 past 45-day windowprice pending
Filed Aug 15, 2021·traded Jun 4, 2021
sold
I
Iron Mountain Incorporated (IRM)(IRM)$1K-$15K
72 days to disclose · 27 past 45-day window
Flat·+0.0%
+68.9% vs S&P 500
Filed Aug 15, 2021·traded Jun 4, 2021
soldVisa Inc. (V)(V)$1K-$15K
72 days to disclose · 27 past 45-day window
Flat·+0.0%
+34.8% vs S&P 500
Filed Aug 15, 2021·traded Jun 4, 2021
sold
I
Iron Mountain Incorporated (IRM)(IRM)$1K-$15K
72 days to disclose · 27 past 45-day window
Flat·+0.0%
+68.9% vs S&P 500
Filed Aug 15, 2021·traded Jun 4, 2021
sold
O
Orange (ORAN)(ORAN)$1K-$15K
72 days to disclose · 27 past 45-day windowprice pending
Filed Aug 15, 2021·traded Jun 4, 2021
bought
S
depositary Shares (SONY)(SONY)$1K-$15K
72 days to disclose · 27 past 45-day window
Good buy·+$52+0.6%
68.2% vs S&P 500
Filed Aug 15, 2021·traded Jun 4, 2021
bought
S
depositary Shares (SONY)(SONY)$1K-$15K
72 days to disclose · 27 past 45-day window
Good buy·+$52+0.6%
68.2% vs S&P 500

Their record vs the S&P 500

29 priced trades compared to a same-direction S&P 500 benchmark.

Politician portfolio+$158.2K
S&P 500 benchmark+$209K
Alpha$50.8K
Gold line = cumulative dollar P&L · Dashed = S&P 500 over same window · Bars = monthly trade volume

Oversight committees · 0

Click any committee to see what it actually does, which sectors it regulates, and why each sector tag was attached. Sources cited.

No committee assignments on record.

Recent legislative activity · 23 bills

3 sponsored, 20 cosponsored in the 119th Congress. Color-coded by sector — yellow chips mark bills that overlap a sector this politician has actually traded in.