Every Form 4 that Waters Corp (WAT) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow WAT and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full WAT filings page.
Waters Corp director Christopher A. Kuebler reported exercising stock options for 3,626 shares of common stock on August 6, 2026, at 136.4300 per share.
On the same date he sold 3,626 common shares at 397.9400 per share in a transaction described as a sale in open market or private transaction.
Waters Corp director Heather Knight reported a compensation-related equity award rather than a market trade. She acquired 63.03 common stock units of Waters common stock at a stated price of $0.00 per unit, bringing her direct holdings to 1,280.54 common stock units.
According to the disclosure, these common stock units were received in lieu of cash payment of director fees under the company’s 1996 Non-Employee Director Deferred Compensation Plan. The units are convertible into an equal number of Waters common shares upon distribution, which is scheduled to occur on January 1, 2027, based on a prior election.
Waters Corp director Wei Jiang reported a grant of common stock units received as board compensation. On this Form 4, Jiang acquired 67.42 common stock units at a stated price of $0.00 per unit, increasing direct holdings to 3,572.75 common stock units.
According to the filing, these units were received in lieu of cash payment of director fees under Waters Corp's 1996 Non-Employee Director Deferred Compensation Plan. Each common stock unit is convertible into one share of Waters Corp common stock upon distribution, which will occur automatically when Jiang's service on the board terminates.
Waters Corp SVP Robert L. Carpio III reported a routine tax-related share disposition. On June 24, 2026, 189 shares of Waters common stock were withheld by the company to cover tax obligations tied to the vesting of previously reported restricted stock units.
These shares were not sold on the open market but used to satisfy withholding requirements. After this transaction, Carpio directly holds 3,426 shares of Waters common stock.
Waters Corporation’s SVP & Chief Financial Officer Amol Chaubal reported a routine tax-related share disposition. On the reported date, 239 shares of common stock were withheld by the company to cover tax obligations tied to vesting of previously granted restricted stock units, rather than sold in the market.
After this withholding, Chaubal directly holds about 7,622.8449 common shares. This total includes 65.4519 shares acquired earlier through the Waters Corporation Amended and Restated 2009 Employee Stock Purchase Plan in a transaction described as exempt under Rule 16b-3(c), indicating ongoing equity participation.
Waters Corp senior vice president Jianqing Bennett reported a routine tax-related share disposition. On the vesting of previously reported restricted stock units, 302 shares of common stock were withheld by the company at $304.09 per share to cover tax obligations. Following this withholding, Bennett directly holds 6,532 shares of Waters common stock.
Jiang Wei reported acquisition or exercise transactions in this Form 4 filing.
Waters Corp director Jiang Wei reported an equity-based compensation grant. On this Form 4, Jiang received 64.06 common stock units in lieu of cash director fees under the company’s 1996 Non-Employee Director Deferred Compensation Plan.
The units are convertible into shares of Waters common stock on a one-for-one basis and are scheduled to be distributed on January 1, 2036, pursuant to a prior election. After this award, Jiang directly holds 3,505.33 common stock units/shares-equivalent.
Knight Heather reported acquisition or exercise transactions in this Form 4 filing.
Waters Corporation director Heather Knight received an equity grant of 68.44 common stock units as compensation in lieu of cash director fees. These units are convertible into shares of Waters common stock on a one-for-one basis and will be distributed on January 1, 2027, based on a prior election. Following this grant, Knight directly holds a total of 1,217.51 shares of the company’s common stock, reflecting a routine, non-cash adjustment to her board compensation rather than an open-market purchase or sale.
Waters Corp director Wei Jiang bought 500 shares of common stock in an open-market transaction at $289.46 per share. After this purchase, Jiang directly owns 3,441.27 Waters shares, increasing their personal stake in the company.
Waters Corporation director Richard H. Fearon bought 1,000 shares of common stock in an open-market transaction on March 6, 2026. The shares were purchased at a weighted average price of $306.34 per share, with individual trade prices ranging from $305.84 to $306.49. Following this purchase, he directly holds 3,302 Waters shares.
Waters Corporation President and CEO Udit Batra reported an automatic share disposition related to tax withholding. On this Form 4, 3,417 shares of common stock were withheld by the company at a price of $307.23 per share to cover tax obligations tied to vesting performance stock units.
These shares were not sold in an open-market transaction but were retained by the issuer to satisfy withholding requirements. After this tax-withholding disposition, Batra directly owned 33,140 shares of Waters common stock.
Waters Corp senior vice president and chief financial officer Amol Chaubal reported an insider transaction related to equity compensation. On this Form 4, 709 shares of common stock were withheld by the company on March 2, 2026 to satisfy tax obligations tied to the vesting of previously reported performance stock units, at a price of $307.23 per share. This was a tax-withholding disposition rather than an open-market sale. After this withholding, Chaubal directly holds 7,796.393 shares of Waters common stock.
Waters Corporation senior vice president Jianqing Bennett reported a tax-related share disposition. On this Form 4, 410 shares of common stock were withheld by the company at a price of $307.23 per share to satisfy tax withholding obligations tied to vesting of previously reported performance stock units. After this withholding, Bennett directly owns 6,834 shares of Waters common stock.
Carpio Robert L III reported acquisition or exercise transactions in this Form 4 filing.
Waters Corp senior vice president Robert L. Carpio III received new equity awards, not open-market purchases or sales. He was granted 4,884 stock options and 997 restricted stock units as of February 25, 2026. The options and RSUs both vest in four equal annual installments starting on February 25, 2027, contingent on his continued service. Following the RSU grant, his directly held common stock position is 3,615 shares.
Waters Corporation SVP Jianqing Bennett reported equity awards that increase his direct ownership. He received stock options for 4,826 shares at an exercise price of $0.0000 per share and a grant of 986 shares of common stock, both described as grant or award acquisitions.
The common stock grant represents restricted stock units that convert into one share of common stock each upon vesting and settlement. Both the RSUs and the stock options will vest in four equal annual installments, with the first installment scheduled to vest on February 25, 2027, contingent on his continued service with the company.
Waters Corporation SVP & Chief Financial Officer Amol Chaubal received new equity awards. He was granted a stock option covering 7,125 shares and an award of 1,455 shares of common stock as a grant or other acquisition at no cash cost per share.
The 1,455-share grant represents restricted stock units that vest in four equal annual installments starting on February 25, 2027, and convert into common stock on a one-to-one basis at settlement. The 7,125-share stock option also vests in four equal annual installments beginning on February 25, 2027, contingent on his continued service.
Waters Corporation President and CEO Udit Batra reported equity awards that increase his direct holdings through compensation grants, not open-market trades. He received a stock option covering 25,283 shares at a grant price of $0.00 and a grant of 5,165 shares of common stock.
The 5,165-share grant represents restricted stock units that convert one-for-one into common stock and vest in four equal annual installments starting on February 25, 2027, subject to continued service. The 25,283-share stock option also vests in four equal annual installments beginning on February 25, 2027, and becomes exercisable on the same schedule.
Waters Corporation director Mark Vergnano reported equity awards rather than open-market trades. On February 25, 2026, he received a grant of stock options for 57 shares at an exercise price of $0.00 per share and an award of 23 shares of common stock, both as acquisitions.
The 23 common shares are restricted stock that remain subject to restrictions until February 9, 2027, when 100% of these restrictions lapse. All 57 shares underlying the stock option will vest and become exercisable on February 9, 2027. After these awards, he directly owns 4,540 shares of Waters common stock.
Waters Corp director Christopher A. Kuebler reported equity awards that increase his direct holdings. On February 25, 2026, he received a stock option for 57 shares at an exercise price of $0.00 per share and a grant of 23 shares of common stock at $0.00 per share.
The 23 common shares are subject to restrictions that lapse for all shares on February 9, 2027, and all 57 option shares vest and become exercisable on the same date. Following the stock grant, Kuebler directly owns 17,808 shares of Waters common stock.
Waters Corporation director Heather Knight reported awards of both stock options and restricted common shares. She received stock options for 57 shares at an exercise price of $0.0000 per share and a grant of 23 common shares, all as awards rather than open-market purchases.
The 23 common shares are subject to restrictions that lapse for all of the shares on February 9, 2027. All 57 option shares will vest and become exercisable on February 9, 2027. After these grants, her directly owned common shares total 1,149.070.
Waters Corporation director Jiang Wei reported receiving new equity awards. He acquired 23 shares of common stock at no cost, which are subject to restrictions that lapse in full on February 9, 2027. He was also granted a stock option for 57 shares that becomes fully exercisable on February 9, 2027. Both positions are held as direct ownership.
Waters Corporation director Pearl S. Huang reported receiving new equity awards. On February 25, 2026, she was granted stock options for 57 shares of common stock at an exercise price of $0.00 per share. All of these option shares will vest and become exercisable on February 9, 2027.
On the same date, she also acquired 23 shares of common stock at $0.00 per share as a restricted stock award. The restrictions on 100% of these shares are scheduled to lapse on February 9, 2027. Following these awards, her directly held common stock position increased to 3,276.3 shares.
Waters Corporation director Claire Fraser reported equity awards consisting of stock options and restricted common shares. On February 25, 2026, she was granted options for 877 shares of common stock at an exercise price of $0.0000 per share and 358 shares of common stock at no cost, both as awards rather than open-market purchases.
According to the disclosures, all 358 common shares are subject to restrictions that lapse on February 9, 2027. The 877 stock options will fully vest and become exercisable on the same date, aligning Fraser’s longer-term incentives with Waters’ future performance.
Waters Corporation director Richard H. Fearon reported awards of stock-based compensation. On February 25, 2026, he acquired a stock option covering 57 shares of common stock at an exercise price of $0.00 per share, which will vest and become exercisable on February 9, 2027.
He also received 23 shares of restricted common stock at no cost, subject to restrictions that lapse in full on February 9, 2027. Following these awards, he directly owned 2,302 shares of Waters common stock.
Waters Corporation director Daniel J. Brennan reported equity awards that increase his direct ownership in the company. He received a stock option covering 57 shares of common stock at an exercise price of $0.00 per share, and a grant of 23 shares of restricted common stock, both on February 25, 2026.
The restricted shares remain subject to restrictions until February 9, 2027, when they fully lapse. All 57 option shares will vest and become exercisable on the same February 9, 2027 date. Following these grants, Brennan directly owns 1,355 shares of Waters common stock.
Waters Corp director Linda Baddour reported receiving new equity awards. On February 25, 2026, she acquired stock options for 57 shares of common stock at an exercise price of $0.00 per share and 23 shares of common stock granted at no cost.
All 57 option shares and the 23 restricted common shares vest on February 9, 2027. Following these grants, she directly holds 2,899 shares of common stock and 57 stock options in Waters Corp.
Ornskov Flemming reported acquisition or exercise transactions in this Form 4 filing.
Waters Corp director Flemming Ornskov reported equity awards, not open-market trades. On February 25, 2026, he received a grant of 336 shares of common stock at no cash cost, increasing his directly held common shares to 5,271.
He also received a stock option for 57 shares at no cash cost. According to the footnotes, the 336-share award is subject to restrictions that lapse on February 9, 2027, and all 57 option shares will vest and become exercisable on February 9, 2027.
Waters Corporation senior vice president Robert L. Carpio III reported a small insider transaction involving company common stock. On February 5, 2026, 38 shares were withheld by Waters to cover tax obligations tied to the vesting of previously reported restricted stock units at $376.89 per share. After this tax withholding, Carpio beneficially owns 2,618 shares of Waters common stock directly.
Waters Corporation senior vice president Jianqing Bennett reported equity compensation activity involving company common stock. On February 4, 2026, Bennett acquired 1,385 shares at $0 per share upon certification of performance-based restricted stock units that were originally granted on February 8, 2023, and tied to service and performance conditions.
The units convert into common stock on a one-to-one basis upon vesting and settlement, with full vesting scheduled upon satisfaction of the service-based requirement on March 1, 2026. On February 5, 2026, 43 shares at $376.89 per share were withheld by Waters to cover tax obligations related to previously reported restricted stock unit vesting, leaving Bennett with 6,258 directly held shares.
Waters Corp SVP & CFO Amol Chaubal reported equity compensation activity. On February 4, 2026, he acquired 1,884 shares of common stock at $0 following the vesting of previously granted performance-based restricted stock units, increasing his direct holdings to 7,108.393 shares.
On February 5, 2026, 58 shares at $376.89 were withheld by Waters to cover tax obligations tied to earlier restricted stock unit vesting, leaving Chaubal with 7,050.393 directly owned shares. The performance-based units were originally granted on February 8, 2023 and are scheduled to vest in full on March 1, 2026, converting to common stock on a one-to-one basis upon vesting and settlement.
Waters Corporation President and CEO Udit Batra reported equity award activity involving company common stock. On February 4, 2026, he acquired 7,066 shares at $0 upon certification of performance-based restricted stock units granted in 2023. These PSUs convert one-for-one into common shares when vesting conditions are met.
On February 5, 2026, 218 shares of common stock were withheld at $376.89 per share to cover tax obligations tied to vesting of previously reported restricted stock units. Following these transactions, Batra directly owned 31,392 shares of Waters common stock.
Waters Corp (WAT) director equity grant reported
Director Mark Vergnano reported receiving 307 shares of Waters Corp common stock on January 2, 2026, at a stated price of $0. These shares are restricted and the filing states that restrictions lapse on January 2, 2027. Following this grant, he beneficially owns 4,517 common shares directly.
On the same date, he was also granted a stock option covering 828 shares of common stock with an exercise price of $381.96 per share. The option becomes fully exercisable on January 2, 2027 and expires on January 2, 2036. After this grant, he holds 828 derivative securities (stock options) directly.
Waters Corp director reports new stock awards. Director Christopher A. Kuebler reported receiving 307 shares of Waters Corp common stock on January 2, 2026 as a restricted stock grant at a price of $0 per share. These shares are subject to restrictions that lapse in full on January 2, 2027. Following this grant, he beneficially owns 17,785 common shares directly.
On the same date, he was granted a stock option covering 828 shares of common stock with an exercise price of $381.96 per share. All 828 option shares will vest and become exercisable on January 2, 2027, and the option expires on January 2, 2036. Both the stock and option holdings are reported as directly owned.
Waters Corp director reports new stock and option awards. A director of Waters Corp (WAT) acquired 307 shares of common stock on 01/02/2026 at a price of $0, increasing direct beneficial ownership to 3,253.3 shares. These 307 shares are restricted and will fully vest on January 2, 2027.
The director also received a stock option for 828 shares of common stock with an exercise price of $381.96 per share, granted on 01/02/2026. All 828 option shares will vest and become exercisable on January 2, 2027 and will expire on January 2, 2036, if not exercised.
Waters Corp director equity grant: A director of Waters Corp received new equity awards on January 2, 2026. The director was granted 307 shares of common stock at a price of $0, which are restricted and scheduled to fully lapse on January 2, 2027. After this grant, the director beneficially owns 2,279 shares of Waters common stock directly.
The director was also granted a stock option covering 828 shares of Waters common stock at an exercise price of $381.96 per share. All 828 option shares are scheduled to vest and become exercisable on January 2, 2027, and the option expires on January 2, 2036. These awards are typical director compensation in equity form, aligning the director’s holdings with the company’s stock performance.
Waters Corp director reports equity awards in a Form 4 dated 01/02/2026. The reporting person, a director of Waters Corp, acquired 307 shares of common stock at a price of $0, bringing total directly held common shares to 1,332.
The filing also shows a grant of a stock option covering 828 shares of common stock with an exercise price of $381.96 per share, expiring on 01/02/2036. All 307 common shares are restricted stock that will fully lapse in restrictions on January 2, 2027, and all 828 option shares will vest and become exercisable on January 2, 2027.
Waters Corp director reports new stock and option awards. Director Linda Baddour reported receiving 307 shares of Waters common stock on January 2, 2026, at a stated price of $0, increasing her directly held stake to 2,876 shares. These shares are restricted and all restrictions lapse on January 2, 2027, meaning they fully vest on that date.
On the same date, she also received a stock option for 828 shares of common stock with an exercise price of $381.96 per share. The option becomes fully exercisable on January 2, 2027 and expires on January 2, 2036. Following this grant, she directly holds options covering 828 shares in addition to her common stock holdings.
Waters Corp director Flemming Ornskov reported new equity awards, including 307 shares of common stock and a stock option for 828 shares, both dated January 2, 2026. The 307 shares are restricted stock that remain subject to restrictions until January 2, 2027, when all of them are scheduled to vest. The option has an exercise price of $381.96 per share and will become fully exercisable on January 2, 2027, with an expiration date of January 2, 2036. After these transactions, the director beneficially owns 4,935 shares of Waters common stock directly and holds 828 stock options.
Waters Corp director Wei Jiang reported new equity awards in the company. On December 31, 2025, Jiang received 59.79 common stock units in lieu of cash director fees under Waters’ 1996 Non-Employee Director Deferred Compensation Plan. These units convert into the same number of common shares on January 1, 2035 based on a prior election.
On January 2, 2026, Jiang acquired 307 shares of common stock at $0, which are subject to restrictions that lapse in full on January 2, 2027, increasing beneficial ownership to 2,918.27 shares held directly. The same day, Jiang was also granted a stock option to buy 828 shares at an exercise price of $381.96 per share, which will vest and become exercisable on January 2, 2027 and expire on January 2, 2036.
Waters CorpDecember 31, 2025, she received 59.79 common stock units in lieu of cash director fees under the 1996 Non-Employee Director Deferred Compensation Plan. These units convert to common shares on a one-for-one basis, with distribution scheduled for January 1, 2027, based on a prior election.
On January 2, 2026, she was granted 307 shares of restricted common stock, which remain subject to restrictions that lapse in full on January 2, 2027. She also received a stock option for 828 shares at an exercise price of $381.96 per share. All 828 option shares will vest and become exercisable on January 2, 2027. After these transactions, she directly owned 1,126.07 shares of common stock and 828 stock options.
Waters Corporation (WAT) director Christopher Kuebler exercised stock options for 3,761 shares at $130.35 on November 5, 2025. The issuer withheld 1,318 shares at $371.97 to cover the exercise price; this was not a sale. After the transactions, he directly owned 17,478 shares.
The exercised option was granted on January 4, 2017 and was set to expire on January 4, 2026, and now has zero remaining.
Heather Knight, a Director of Waters Corp (WAT), reported a Form 4 disclosing receipt of 77.88 common stock units on 09/30/2025 under the Issuer's 1996 Non-Employee Director Deferred Compensation Plan. The filing states these common stock units were received in lieu of cash director fees and are convertible one-for-one into shares of the company's common stock upon distribution, which the reporting person elected to occur on 01/01/2027. After the reported transaction the form shows 759.28 shares beneficially owned by the reporting person. The Form 4 was signed by attorney-in-fact Michael Lynn on 10/02/2025.
The reporting person, Wei Jiang, a director of Waters Corp (WAT), received 72.91 common stock units on 09/30/2025 in lieu of cash director fees under the issuer's 1996 Non-Employee Director Deferred Compensation Plan. Those units convert one-for-one into shares on distribution, and the reporting person elected to have distributions occur on January 1, 2035. Following the transaction the reporting person beneficially owns 2,551.48 shares (or equivalent units). The units were reported as acquired at a price of $0 and were signed on behalf of the reporting person by an attorney-in-fact.