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[Form 4] ECOLAB INC. Insider Trading Activity

Filing Impact
(Low)
Filing Sentiment
(Neutral)
Form Type
4

Michael Larson, a director of Ecolab Inc. (ECL), reported a transaction dated 09/30/2025 on Form 4 showing an acquisition of 123.23 shares of Ecolab common stock at a reported price of $0. The filing states the position after the transaction was 17,396.17 shares beneficially owned. An explanatory note clarifies that 24.57 of the shares were acquired through a dividend reinvestment feature of the company’s 2001 Non-Employee Director Stock Option and Deferred Compensation Plan. The form is signed by an attorney-in-fact on behalf of Mr. Larson with a signature date of 10/02/2025.

Michael Larson, un direttore di Ecolab Inc. (ECL), ha riportato una transazione datata 30/09/2025 sul modulo 4 che mostra l'acquisizione di 123,23 azioni ordinarie di Ecolab a un prezzo riportato di $0. La dichiarazione indica che la posizione dopo la transazione era di 17.396,17 azioni detenute beneficiariamente. Una nota esplicativa chiarisce che 24,57 delle azioni sono state acquisite mediante una funzione di reinvestimento dei dividendi del piano di Opzioni su Azioni per Direttori non dipendenti e di Compensazione Differita della società del 2001. Il modulo è firmato da un procuratore che agisce per conto del signor Larson con la data di firma 02/10/2025.

Michael Larson, un director de Ecolab Inc. (ECL), reportó una transacción fechada el 30/09/2025 en el Formulario 4 que muestra la adquisición de 123,23 acciones comunes de Ecolab a un precio informado de $0. La presentación indica que la posición después de la transacción era de 17.396,17 acciones poseídas de manera beneficiosa. Una nota explicativa señala que 24,57 de las acciones se adquirieron a través de una función de reinversión de dividendos del plan de Opciones sobre Acciones para Directores no Empleados y de Compensación Diferida de 2001 de la empresa. El formulario está firmado por un procurador en nombre del Sr. Larson con fecha de firma de 02/10/2025.

Michael LarsonEcolab Inc. (ECL)이사로서 2025-09-30에 작성된 Form 4에서 123.23주의 Ecolab 보통주를 $0의 보고 가격으로 취득했다는 거래를 보고했습니다. 공시는 거래 후 소유 지분이 17,396.17주라고 밝힙니다. 설명 메모에선 회사의 2001년 비-직원 이사 주식매수선택권 및 보수지급 연기 계획의 배당 재투자 기능을 통해 24.57주가 취득되었다고 명시합니다. 양식은 Larson 씨를 대신하여 대리인으로 서명했으며 서명일은 2025-10-02입니다.

Michael Larson, un directeur de Ecolab Inc. (ECL), a déclaré une transaction datée du 30/09/2025 sur le formulaire 4 montrant une acquisition de 123,23 actions ordinaires d’Ecolab à un prix rapporté de $0. Le dépôt indique que la position après la transaction était de 17.396,17 actions détenues bénéficiairement. Une note explicative précise que 24,57 des actions ont été acquises par le biais d’une fonction de réinvestissement des dividendes du Plan d’options sur actions pour administrateurs non salariés et de rémunération différée de 2001 de l’entreprise. Le formulaire est signé par un mandataire agissant au nom de M. Larson avec une date de signature du 02/10/2025.

Michael Larson, ein Direktor von Ecolab Inc. (ECL), meldete eine Transaktion vom 30.09.2025 im Formular 4, die den Erwerb von 123,23 Stammaktien von Ecolab zu einem gemeldeten Preis von $0 zeigt. Die Einreichung gibt an, dass die Position nach der Transaktion 17.396,17 stimmberechtigte Aktien beträgt. Eine erläuternde Anmerkung klärt, dass 24,57 der Aktien durch eine Dividenden-Reinvestitionsfunktion des 2001er Non-Employee Director Stock Option and Deferred Compensation Plan des Unternehmens erworben wurden. Das Formular ist von einem Bevollmächtigten im Namen von Herrn Larson unterschrieben, mit einem Unterschriftsdatum vom 02.10.2025.

Michael Larson، مدير في Ecolab Inc. (ECL)، أبلغ عن صفقة مؤرخة 30/09/2025 في النموذج 4 تُظهر اكتساب 123.23 سهماً من أسهم Ecolab العادية عند سعر مُبلغ عنه قدره $0. تشير الوثيقة إلى أن الوضع بعد الصفقة كان 17,396.17 سهماً مملوكاً للفائدة بشكل مستفاد. توضح ملاحظة توضيحية أن 24.57 من تلك الأسهم تم الحصول عليها من خلال ميزة إعادة استثمار الأرباح من خطة خيار الأسهم للمديرين غير الموظفين والتعويض المؤجل لعام 2001 للشركة. النموذج موقّع من وكيل نيابة باسم السيد Larson وتاريخ التوقيع 02/10/2025.

Michael Larson,一位Ecolab Inc. (ECL)董事,在4号表格上报告了日期为2025/09/30的交易,显示以报道价格$0购得123.23股Ecolab普通股。该申报称交易后持股数为17,396.17股,受益所有。解释性说明指出,通过公司2001年非雇员董事股票期权与递延补偿计划的股息再投资功能,取得了24.57股。该表格由代表Larson先生的代理人签名,签名日期为2025/10/02

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Michael Larson, un direttore di Ecolab Inc. (ECL), ha riportato una transazione datata 30/09/2025 sul modulo 4 che mostra l'acquisizione di 123,23 azioni ordinarie di Ecolab a un prezzo riportato di $0. La dichiarazione indica che la posizione dopo la transazione era di 17.396,17 azioni detenute beneficiariamente. Una nota esplicativa chiarisce che 24,57 delle azioni sono state acquisite mediante una funzione di reinvestimento dei dividendi del piano di Opzioni su Azioni per Direttori non dipendenti e di Compensazione Differita della società del 2001. Il modulo è firmato da un procuratore che agisce per conto del signor Larson con la data di firma 02/10/2025.

Michael Larson, un director de Ecolab Inc. (ECL), reportó una transacción fechada el 30/09/2025 en el Formulario 4 que muestra la adquisición de 123,23 acciones comunes de Ecolab a un precio informado de $0. La presentación indica que la posición después de la transacción era de 17.396,17 acciones poseídas de manera beneficiosa. Una nota explicativa señala que 24,57 de las acciones se adquirieron a través de una función de reinversión de dividendos del plan de Opciones sobre Acciones para Directores no Empleados y de Compensación Diferida de 2001 de la empresa. El formulario está firmado por un procurador en nombre del Sr. Larson con fecha de firma de 02/10/2025.

Michael LarsonEcolab Inc. (ECL)이사로서 2025-09-30에 작성된 Form 4에서 123.23주의 Ecolab 보통주를 $0의 보고 가격으로 취득했다는 거래를 보고했습니다. 공시는 거래 후 소유 지분이 17,396.17주라고 밝힙니다. 설명 메모에선 회사의 2001년 비-직원 이사 주식매수선택권 및 보수지급 연기 계획의 배당 재투자 기능을 통해 24.57주가 취득되었다고 명시합니다. 양식은 Larson 씨를 대신하여 대리인으로 서명했으며 서명일은 2025-10-02입니다.

Michael Larson, un directeur de Ecolab Inc. (ECL), a déclaré une transaction datée du 30/09/2025 sur le formulaire 4 montrant une acquisition de 123,23 actions ordinaires d’Ecolab à un prix rapporté de $0. Le dépôt indique que la position après la transaction était de 17.396,17 actions détenues bénéficiairement. Une note explicative précise que 24,57 des actions ont été acquises par le biais d’une fonction de réinvestissement des dividendes du Plan d’options sur actions pour administrateurs non salariés et de rémunération différée de 2001 de l’entreprise. Le formulaire est signé par un mandataire agissant au nom de M. Larson avec une date de signature du 02/10/2025.

Michael Larson, ein Direktor von Ecolab Inc. (ECL), meldete eine Transaktion vom 30.09.2025 im Formular 4, die den Erwerb von 123,23 Stammaktien von Ecolab zu einem gemeldeten Preis von $0 zeigt. Die Einreichung gibt an, dass die Position nach der Transaktion 17.396,17 stimmberechtigte Aktien beträgt. Eine erläuternde Anmerkung klärt, dass 24,57 der Aktien durch eine Dividenden-Reinvestitionsfunktion des 2001er Non-Employee Director Stock Option and Deferred Compensation Plan des Unternehmens erworben wurden. Das Formular ist von einem Bevollmächtigten im Namen von Herrn Larson unterschrieben, mit einem Unterschriftsdatum vom 02.10.2025.

SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
LARSON MICHAEL

(Last) (First) (Middle)
C/O ECOLAB INC.
1 ECOLAB PLACE

(Street)
ST. PAUL MN 55102

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
ECOLAB INC. [ ECL ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
09/30/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 09/30/2025 A 123.23 A $0 17,396.17(1) D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
1. Includes 24.57 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.
/s/ Corinne Lawson, as Attorney-in-Fact for Michael Larson 10/02/2025
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What transaction did Michael Larson report for ECL?

The Form 4 reports an acquisition of 123.23 shares of Ecolab common stock on 09/30/2025.

How many ECL shares does Michael Larson own after the reported transaction?

The filing shows beneficial ownership of 17,396.17 shares following the transaction.

Why is the reported purchase price listed as $0 on the Form 4?

The Form 4 lists the transaction price as $0 and includes a note that 24.57 shares were acquired via a dividend reinvestment feature of the director plan.

When was the Form 4 signed and by whom?

The Form 4 was signed on behalf of Michael Larson by Corinne Lawson, as Attorney-in-Fact with a signature date of 10/02/2025.

What position does Michael Larson hold at Ecolab?

The filing indicates Michael Larson is a Director of Ecolab Inc.
Ecolab Inc

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77.71B
283.10M
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92.73%
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Specialty Chemicals
Soap, Detergents, Cleang Preparations, Perfumes, Cosmetics
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