STOCK Act disclosures · WATERS CORP /DE/

Which Members of Congress Traded Waters (WAT)?

9 members of Congress have disclosed 23 trades in Waters (WAT) stock between Jun 27, 2019 and Aug 13, 2026: 12 purchases and 9 full or partial sales, plus 2 exchanges. In the last 12 months, 5 members disclosed 2 purchases and 3 sales. The latest is Kevin Hern’s sale of $1k – $15k on Aug 13, 2026.

Of the 20 trades whose filing names the account owner, 2 werein a spouse’s account and 2 in a joint account.

House PTR filings as of Oct 20, 2026

Senate PTR filings as of Nov 30, 2020 · archive; later Senate trades are not included yet

Members
9
Disclosed trades
23
Purchases
12
Sales
9
Est. bought*
$96k
Est. sold*
$72k

Who are the members of Congress trading WAT?

9 members
MemberPartyStateChamberTradesBuysSellsEst. volume*Latest
Gil CisnerosDCA-31House550$40k2026-03-18
Lois FrankelDFL-22House422$32k2023-09-08
Julia LetlowRLA-05House321$24k2025-12-08
Robert Bresnahan JrRPA-08House321$24k2025-05-15
Kevin HernROK-01House201$16k2026-08-13
Tom Kean Jr.RNJ-07House202$16k2026-03-10
Lisa McClainRMI-09House211$16k2025-07-22
Debbie DingellDMI-06House100$8k2026-02-10
Angus King JrIMESenate101$8k2019-07-23

*Estimated volume adds up the midpoint of each disclosed amount band (e.g. $8,000 for $1,001–$15,000). It is an estimate, not a reported figure. Chamber is the one each trade was filed with.

Are members of Congress buying or selling WAT?

Trade yearTradesBuysSellsMembers
20266134
202510824
20242111
20231011
20211011
20193212

By the year of the trade. Trades can be reported up to 45 days after they happen, so the latest months fill in as filings arrive.

How quickly were WAT trades reported?

Median days to report
29
90th percentile
36 days
Filed after 45 days
2 of 22
Longest gap
447 days

Days from each trade to the date its periodic transaction report was filed. The STOCK Act asks members to report a trade no later than 45 days after it happens; a later report is a matter of public record, not by itself evidence of wrongdoing. 1 trade could not be matched to a filing date and is not counted. Compare every member on the late-filing tracker.

What are the latest WAT trades by members of Congress?

Newest 23 of 23
Trade dateMemberTypeAmountOwnerFiledFiling
2026-08-13Kevin Hern · R-OK-01 · HouseSell$1k – $15kJoint2026-09-01 · 19dPTR
2026-03-18Gil Cisneros · D-CA-31 · HouseBuy$1k – $15kSelf2026-04-07 · 20dPTR
2026-03-10Tom Kean Jr. · R-NJ-07 · HousePartial sell$1k – $15kSelf2026-04-13 · 34dPTR
2026-02-13Tom Kean Jr. · R-NJ-07 · HousePartial sell$1k – $15kSelf2026-03-18 · 33dPTR
2026-02-10Debbie Dingell · D-MI-06 · HouseExchange$1k – $15kSelf2026-02-23 · 13dPTR
2026-02-09Kevin Hern · R-OK-01 · HouseExchange$1k – $15kJoint2026-03-06 · 25dPTR
2025-12-08Julia Letlow · R-LA-05 · HouseBuy$1k – $15kSelf2026-01-13 · 36dPTR
2025-09-30Gil Cisneros · D-CA-31 · HouseBuy$1k – $15kSelf2025-10-10 · 10dPTR
2025-08-26Gil Cisneros · D-CA-31 · HouseBuy$1k – $15kSelf2025-09-12 · 17dPTR
2025-08-13Gil Cisneros · D-CA-31 · HouseBuy$1k – $15kSelf2025-09-12 · 30dPTR
2025-08-12Gil Cisneros · D-CA-31 · HouseBuy$1k – $15kSelf2025-09-12 · 31dPTR
2025-07-22Lisa McClain · R-MI-09 · HouseSell$1k – $15kSpouse2025-08-13 · 22dPTR
2025-07-16Lisa McClain · R-MI-09 · HouseBuy$1k – $15kSpouse2025-08-13 · 28dPTR
2025-05-15Robert Bresnahan Jr · R-PA-08 · HouseBuy$1k – $15kSelf2025-06-09 · 25dPTR
2025-04-08Robert Bresnahan Jr · R-PA-08 · HouseSell$1k – $15kSelf2025-05-08 · 30dPTR
2025-02-25Robert Bresnahan Jr · R-PA-08 · HouseBuy$1k – $15kSelf2025-03-27 · 30dPTR
2024-11-19Julia Letlow · R-LA-05 · HouseSell$1k – $15kSelf2026-01-13 · 420dPTR
2024-10-23Julia Letlow · R-LA-05 · HouseBuy$1k – $15kSelf2026-01-13 · 447dPTR
2023-09-08Lois Frankel · D-FL-22 · HouseSell$1k – $15kSelf2023-10-10 · 32dPTR
2021-08-04Lois Frankel · D-FL-22 · HousePartial sell$1k – $15kSelf2021-08-18 · 14dPTR
2019-08-29Lois Frankel · D-FL-22 · HouseBuy$1k – $15k—2019-09-30 · 32d—
2019-07-23Angus King Jr · I-ME · SenatePartial sell--$1k – $15k——PTR
2019-06-27Lois Frankel · D-FL-22 · HouseBuy$1k – $15k—2019-07-19 · 22d—

Days after the filing date count from the trade to the report; a highlighted figure is past the 45-day deadline.

What do these records cover?

House trades come from the official House Clerk filings from 2021 on; earlier House rows come from an archive of the same reports. Senate trades come from an archive that ends on Nov 30, 2020. Senators’ WAT trades after that date are not included until the Senate eFD import is live, so this page undercounts Senate activity since then (1 of the 23 trades here are Senate filings). Scanned paper filings are not itemised, so their trades are not counted.

These are trades reported on periodic transaction reports, not current holdings: a member who bought WAT may have sold it since, and a position bought before the records start, or held through a fund, does not show here. Amounts are disclosed as bands. This page is educational and is not a recommendation to buy or sell WAT.

WAT Congress trades: questions answered from the filings

Which members of Congress have traded Waters (WAT) stock?

9 members of Congress disclosed 23 trades in WAT between Jun 27, 2019 and Aug 13, 2026. The most active were Gil Cisneros (D-CA-31, 5 trades), Lois Frankel (D-FL-22, 4 trades) and Julia Letlow (R-LA-05, 3 trades). Senate trades after Nov 30, 2020 are not in these records yet.

Are members of Congress buying or selling WAT?

Across every disclosed trade, 12 were purchases and 9 were full or partial sales, plus 2 exchanges. In the 12 months since Oct 22, 2025, 5 members disclosed 2 purchases and 3 sales.

Who was the latest member of Congress to trade WAT?

Kevin Hern (R-OK-01) disclosed a sale of $1k – $15k dated Aug 13, 2026, reported on Sep 1, 2026 (19 days later). The earliest WAT trade in these records is Lois Frankel's purchase on Jun 27, 2019.

How much WAT stock have members of Congress bought and sold?

Periodic transaction reports give an amount band, not an exact value. Taking the midpoint of each band, disclosed purchases add up to about $96k and sales to about $72k; this is an estimate. The largest single disclosed trade was Kevin Hern's sale of $1k – $15k on Aug 13, 2026.

How long did members of Congress take to report WAT trades?

Of the 22 WAT trades matched to a filing date, the median was reported 29 days after the trade and 90% within 36 days. 2 were filed after the STOCK Act's 45-day deadline, the longest 447 days after the trade.

Do Democrats or Republicans trade WAT more?

3 Democrats disclosed 10 WAT trades and 5 Republicans disclosed 12 trades; 1 independent disclosed 1 trade. Republicans account for more of the trades.

Source: periodic transaction reports filed under the STOCK Act with the House Clerk and the Senate. See Waters’s WAT stock page for insider, 13F and company data, the stocks Congress members are buying, the most active traders in Congress and how we collect this.