The Filings Report

Waters Corp insider trading

WATfinancial statementsForm 4 filings on EDGAR81 transactions since Nov 1, 2024

From August 4, 2026 to November 1, 2026, 0 insiders at Waters Corp bought $0 of stock in the open market, and 1 sold $1M. Officers and directors accounted for $0 of purchases and $1M of sales. The last reported transaction was an award by Knight Heather on September 30, 2026.

The answer card and chart use the same period. Change the range above the chart to update both. Form 4 filings through October 2, 2026; awards, option exercises, tax withholding and gifts are excluded from these totals.

Stock price and insider activity

Daily price candles with insider purchases and sales directly beneath them on the same timeline. Bars show individual days; totals sum all days in the selected period.

WAT daily priceSplit-adjusted prices in US dollars

Bought $0Sold $1MAug 4, 2026 – Nov 1, 2026

Oct 30, 2026O $479.04 · H $480.63 · L $458.85 · C $462.72Bought $0 (0)Sold $0 (0)
$373$402$431$460$4882026-08-04: open $383.39, high $402.18, low $379.50, close $396.082026-08-05: open $398.86, high $402.48, low $390.75, close $400.002026-08-06: open $397.94, high $400.23, low $388.74, close $399.702026-08-07: open $400.60, high $407.88, low $397.09, close $406.862026-08-10: open $405.77, high $413.34, low $402.63, close $411.772026-08-11: open $408.95, high $415.63, low $408.21, close $415.002026-08-12: open $404.77, high $416.62, low $404.77, close $416.152026-08-13: open $412.63, high $420.26, low $408.78, close $413.512026-08-14: open $414.96, high $415.77, low $408.69, close $412.172026-08-17: open $408.48, high $411.91, low $405.94, close $407.742026-08-18: open $407.24, high $409.61, low $400.90, close $401.252026-08-19: open $405.73, high $419.37, low $404.19, close $415.842026-08-20: open $410.00, high $421.74, low $403.43, close $404.692026-08-21: open $400.64, high $412.95, low $396.00, close $410.702026-08-24: open $406.45, high $411.20, low $401.60, close $410.752026-08-25: open $412.24, high $414.90, low $407.12, close $414.442026-08-26: open $409.75, high $418.48, low $406.87, close $414.172026-08-27: open $420.00, high $426.22, low $417.20, close $421.262026-08-28: open $417.80, high $422.50, low $412.38, close $414.692026-08-31: open $405.99, high $415.83, low $405.99, close $414.632026-09-01: open $415.31, high $417.67, low $404.24, close $405.842026-09-02: open $404.56, high $416.58, low $404.51, close $412.202026-09-03: open $415.91, high $418.56, low $404.51, close $413.562026-09-04: open $408.66, high $412.10, low $402.83, close $409.382026-09-08: open $405.33, high $407.42, low $399.72, close $402.912026-09-09: open $403.83, high $411.86, low $400.95, close $404.812026-09-10: open $397.57, high $403.49, low $392.95, close $401.642026-09-11: open $406.47, high $410.11, low $403.77, close $408.342026-09-14: open $411.66, high $411.66, low $402.13, close $410.012026-09-15: open $413.98, high $421.23, low $411.89, close $417.092026-09-16: open $417.86, high $424.73, low $415.94, close $418.642026-09-17: open $424.00, high $431.78, low $422.06, close $429.722026-09-18: open $429.23, high $430.64, low $420.80, close $421.632026-09-21: open $425.80, high $427.76, low $420.75, close $423.922026-09-22: open $424.13, high $433.09, low $422.83, close $425.742026-09-23: open $428.17, high $430.00, low $420.00, close $420.572026-09-24: open $418.33, high $436.34, low $418.00, close $430.302026-09-25: open $428.71, high $435.93, low $425.67, close $433.542026-09-28: open $427.27, high $445.48, low $423.89, close $442.942026-09-29: open $441.46, high $444.41, low $437.88, close $443.262026-09-30: open $443.26, high $448.21, low $439.19, close $439.392026-10-01: open $437.21, high $438.03, low $424.70, close $425.712026-10-02: open $426.78, high $433.34, low $423.44, close $425.212026-10-05: open $425.61, high $440.79, low $423.03, close $440.122026-10-06: open $445.74, high $454.54, low $431.62, close $436.432026-10-07: open $436.00, high $440.37, low $427.41, close $435.992026-10-08: open $431.70, high $432.46, low $421.61, close $429.132026-10-09: open $429.20, high $437.53, low $428.19, close $433.772026-10-12: open $433.73, high $435.07, low $426.50, close $432.102026-10-13: open $435.00, high $436.53, low $422.83, close $429.222026-10-14: open $430.88, high $441.89, low $429.90, close $436.612026-10-15: open $440.37, high $449.12, low $435.79, close $444.152026-10-16: open $444.48, high $448.39, low $431.99, close $436.952026-10-19: open $436.55, high $441.28, low $433.27, close $434.272026-10-20: open $434.37, high $448.03, low $427.97, close $442.832026-10-21: open $436.90, high $459.63, low $435.07, close $457.472026-10-22: open $459.48, high $465.36, low $449.09, close $455.662026-10-23: open $458.16, high $458.16, low $446.70, close $453.672026-10-26: open $455.98, high $461.55, low $449.85, close $455.982026-10-27: open $454.83, high $470.86, low $452.35, close $468.552026-10-28: open $468.02, high $482.28, low $465.30, close $476.882026-10-29: open $479.23, high $482.27, low $472.60, close $480.072026-10-30: open $479.04, high $480.63, low $458.85, close $462.72Insider purchases / sales · USD$2M$0−$2M2026-08-06: 0 purchases ($0), 1 sales ($1M)Aug 4Aug 26Sep 17Oct 9Oct 30

purchases above zero; sales below. Both use the transaction date and the same dollar scale. Hover, tap, or use arrow keys to inspect a date. Awards, exercises, tax withholding and gifts are excluded.

Dates with prices or insider activity are spaced evenly; empty weekends and holidays are omitted. Prices through Oct 30, 2026. Insider data through Nov 1, 2026. Prices are adjusted for splits; transaction values are reported dollars.

Every transaction

81 transactions from November 1, 2024 to November 1, 2026, newest first. Open-market purchases and sales are coloured; awards, exercises, tax withholding and gifts are grey and not counted.

TradedInsiderRoleTransactionSharesPriceValueHeld afterFiled
Sep 30, 2026Knight HeatherDirectoraward57$0.00—1,338Oct 2, 2026
Sep 30, 2026Jiang WeiDirectoraward57$0.00—3,630Oct 2, 2026
Aug 6, 2026Kuebler Christopher ADirectoroption exercise3,626$136.43$495K21,434Aug 7, 2026
Aug 6, 2026Kuebler Christopher ADirectoropen-market sale3,626$397.94$1M17,808Aug 7, 2026
Jun 30, 2026Knight HeatherDirectoraward63$0.00—1,281Jul 2, 2026
Jun 30, 2026Jiang WeiDirectoraward67$0.00—3,573Jul 2, 2026
Jun 24, 2026Carpio Robert L IIISVP Waters Analytical Sciencestax withholding189$369.18$70K3,426Jun 25, 2026
May 12, 2026Chaubal AmolSVP & Chief Financial Officertax withholding239$352.21$84K7,623May 14, 2026
Apr 6, 2026Bennett JianqingSVP Waters Adv. Diagnosticstax withholding302$304.09$92K6,532Apr 7, 2026
Mar 31, 2026Jiang WeiDirectoraward64$0.00—3,505Apr 2, 2026
Mar 31, 2026Knight HeatherDirectoraward68$0.00—1,218Apr 2, 2026
Mar 16, 2026Jiang WeiDirectoropen-market buy500$289.46$145K3,441Mar 18, 2026
Mar 6, 2026Fearon Richard HDirectoropen-market buy1,000$306.34$306K3,302Mar 10, 2026
Mar 2, 2026Batra UditPresident and CEO, Directortax withholding3,417$307.23$1M33,140Mar 3, 2026
Mar 2, 2026Chaubal AmolSVP & Chief Financial Officertax withholding709$307.23$218K7,796Mar 3, 2026
Mar 2, 2026Bennett JianqingSVP Waters Adv. Diagnosticstax withholding410$307.23$126K6,834Mar 3, 2026
Feb 25, 2026Carpio Robert L IIISVP Waters Analytical Sciencesaward997$0.00—3,615Feb 27, 2026
Feb 25, 2026Bennett JianqingSVP Waters Adv. Diagnosticsaward986$0.00—7,244Feb 27, 2026
Feb 25, 2026Chaubal AmolSVP & Chief Financial Officeraward1,455$0.00—8,505Feb 27, 2026
Feb 25, 2026Batra UditPresident and CEO, Directoraward5,165$0.00—36,557Feb 27, 2026
Feb 25, 2026Vergnano MarkDirectoraward23$0.00—4,540Feb 27, 2026
Feb 25, 2026Kuebler Christopher ADirectoraward23$0.00—17,808Feb 27, 2026
Feb 25, 2026Knight HeatherDirectoraward23$0.00—1,149Feb 27, 2026
Feb 25, 2026Jiang WeiDirectoraward23$0.00—2,941Feb 27, 2026
Feb 25, 2026Huang Pearl SDirectoraward23$0.00—3,276Feb 27, 2026
Feb 25, 2026Fraser ClaireDirectoraward358$0.00—489Feb 27, 2026
Feb 25, 2026Fearon Richard HDirectoraward23$0.00—2,302Feb 27, 2026
Feb 25, 2026Brennan Daniel J.Directoraward23$0.00—1,355Feb 27, 2026
Feb 25, 2026Baddour LindaDirectoraward23$0.00—2,899Feb 27, 2026
Feb 25, 2026Ornskov FlemmingDirectoraward336$0.00—5,271Feb 27, 2026
Feb 5, 2026Carpio Robert L IIISVP, Waters Divisiontax withholding38$376.89$14K2,618Feb 6, 2026
Feb 5, 2026Bennett JianqingSVP TA Instruments Divisiontax withholding43$376.89$16K6,258Feb 6, 2026
Feb 5, 2026Chaubal AmolSVP & Chief Financial Officertax withholding58$376.89$22K7,050Feb 6, 2026
Feb 5, 2026Batra UditPresident and CEO, Directortax withholding218$376.89$82K31,392Feb 6, 2026
Feb 4, 2026Bennett JianqingSVP TA Instruments Divisionaward1,385$0.00—6,301Feb 6, 2026
Feb 4, 2026Chaubal AmolSVP & Chief Financial Officeraward1,884$0.00—7,108Feb 6, 2026
Feb 4, 2026Batra UditPresident and CEO, Directoraward7,066$0.00—31,610Feb 6, 2026
Jan 2, 2026Vergnano MarkDirectoraward307$0.00—4,517Jan 5, 2026
Jan 2, 2026Kuebler Christopher ADirectoraward307$0.00—17,785Jan 5, 2026
Jan 2, 2026Huang Pearl SDirectoraward307$0.00—3,253Jan 5, 2026
Jan 2, 2026Fearon Richard HDirectoraward307$0.00—2,279Jan 5, 2026
Jan 2, 2026Brennan Daniel J.Directoraward307$0.00—1,332Jan 5, 2026
Jan 2, 2026Baddour LindaDirectoraward307$0.00—2,876Jan 5, 2026
Jan 2, 2026Ornskov FlemmingDirectoraward307$0.00—4,935Jan 5, 2026
Jan 2, 2026Jiang WeiDirectoraward307$0.00—2,918Jan 5, 2026
Jan 2, 2026Knight HeatherDirectoraward307$0.00—1,126Jan 5, 2026
Dec 31, 2025Jiang WeiDirectoraward60$0.00—2,611Jan 5, 2026
Dec 31, 2025Knight HeatherDirectoraward60$0.00—819Jan 5, 2026
Nov 5, 2025Kuebler Christopher ADirectortax withholding1,318$371.97$490K17,478Nov 7, 2025
Nov 5, 2025Kuebler Christopher ADirectoroption exercise3,761$130.35$490K18,796Nov 7, 2025

Who the insiders are

Everyone who reported a transaction since November 1, 2024, by open-market value over twelve months. Shares held are after the insider’s latest directly held transaction.

InsiderRoleLast transactionKindShares heldBought, 12 monthsSold, 12 monthsSales under a plan
Kuebler Christopher ADirectorAug 6, 2026option exercise21,434—$1M (1)0 of 1
Fearon Richard HDirectorMar 6, 2026open-market buy3,302$306K (1)——
Jiang WeiDirectorSep 30, 2026award3,630$145K (1)——
Knight HeatherDirectorSep 30, 2026award1,338———
Chaubal AmolSVP & Chief Financial OfficerMay 12, 2026tax withholding7,623———
Bennett JianqingSVP Waters Adv. DiagnosticsApr 6, 2026tax withholding6,532———
Batra UditPresident and CEO, DirectorMar 2, 2026tax withholding33,140———
Carpio Robert L IIISVP Waters Analytical SciencesJun 24, 2026tax withholding3,426———
Huang Pearl SDirectorFeb 25, 2026award3,276———
Brennan Daniel J.DirectorFeb 25, 2026award1,355———
Baddour LindaDirectorFeb 25, 2026award2,899———
Ornskov FlemmingDirectorFeb 25, 2026award5,271———
Vergnano MarkDirectorFeb 25, 2026award4,540———
Fraser ClaireDirectorFeb 25, 2026award489———
Vergnano Mark PDirectorJan 2, 2025award4,210———

Questions

Are Waters Corp insiders buying or selling?

Over the twelve months to November 1, 2026, 1 insider at Waters Corp sold $1M of stock in the open market, all by officers and directors, and 2 insiders bought $451K, all by officers and directors. Net, insiders sold $992K. Only open-market purchases and sales are counted.

Who sold the most Waters Corp stock in the last year?

Kuebler Christopher A (Director) sold $1M in 1 open-market sale over the twelve months to November 1, 2026.

Do Waters Corp executives sell under 10b5-1 plans?

0 of the 1 open-market sales in the last twelve months (0%) were reported as made under a Rule 10b5-1 trading plan, set up in advance. A sale under a plan is still counted as a sale.

What counts as insider buying here?

Only open-market purchases (Form 4 code P) and sales (code S) by officers, directors and 10% owners. Stock awards, option exercises, shares withheld for tax and gifts are listed in the table but never counted as buying or selling.

More on Waters Corp

From Form 4, 4/A and 5 filings with the SEC. A record of insider transactions, not a recommendation.