ECOLAB INC. (ECL) Insider Transactions

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 3.08 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 This transaction was executed in multiple trades at prices ranging from $276.370 to $276.890, inclusive. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F2 This transaction was executed in multiple trades at prices ranging from $277.120 to $277.410, inclusive. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

References: F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 This transaction was executed in multiple trades at prices ranging from $276.370 to $276.890, inclusive. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F2 This transaction was executed in multiple trades at prices ranging from $277.120 to $277.410, inclusive. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 This transaction was executed in multiple trades at prices ranging from $279.950 to $280.400, inclusive. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F2 Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of July 31, 2026. Includes 19.783 UNITS acquired since the reporting person's last report. (The 1,755.391 UNITS are the equivalent of approximately 3,221 SHARES of the issuer's Common Stock.)

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 This transaction was executed in multiple trades at prices ranging from $285.1277 to $285.265, inclusive. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F2 Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of July 31, 2026. Includes 9.656 UNITS acquired since the reporting person's last report. (The 3,624.511 UNITS are the equivalent of approximately 6,650 SHARES of the issuer's Common Stock.)

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 On August 3, 2022, the reporting person was granted 6,457 restricted stock units, vesting as to 100% of the units on the fourth anniversary of the date of grant.

F2 The total includes 32.363 shares resulting from automatic dividend reinvestment in transactions exempt pursuant to Rule 16a-11 under Section 16 of the Securities Exchange Act of 1934.

F3 Reflects the reporting person's payment of minimum statutory tax obligations by withholding shares of Ecolab Common Stock incident to the vesting of restricted stock units in accordance with Rule 16b-3.

F4 Restricted stock units convert into common stock on a one-for-one basis.

References: F4, F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 On August 3, 2022, the reporting person was granted 6,457 restricted stock units, vesting as to 100% of the units on the fourth anniversary of the date of grant.

F2 The total includes 32.363 shares resulting from automatic dividend reinvestment in transactions exempt pursuant to Rule 16a-11 under Section 16 of the Securities Exchange Act of 1934.

F3 Reflects the reporting person's payment of minimum statutory tax obligations by withholding shares of Ecolab Common Stock incident to the vesting of restricted stock units in accordance with Rule 16b-3.

F4 Restricted stock units convert into common stock on a one-for-one basis.

References: F3

Reported filing row; may be amended. Do not sum filings blindly.

F1 On August 3, 2022, the reporting person was granted 6,457 restricted stock units, vesting as to 100% of the units on the fourth anniversary of the date of grant.

F2 The total includes 32.363 shares resulting from automatic dividend reinvestment in transactions exempt pursuant to Rule 16a-11 under Section 16 of the Securities Exchange Act of 1934.

F3 Reflects the reporting person's payment of minimum statutory tax obligations by withholding shares of Ecolab Common Stock incident to the vesting of restricted stock units in accordance with Rule 16b-3.

F4 Restricted stock units convert into common stock on a one-for-one basis.

References: F1, F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of June 30, 2026. Includes 21.817 UNITS acquired since the reporting person's last report. (The 1,477.401 UNITS are the equivalent of approximately 2,710 SHARES of the issuer's Common Stock.)

F2 Option granted under the Ecolab Inc. 2010 Stock Incentive Plan. The option became or becomes exercisable, on a cumulative basis, as to one-third of the option shares (excluding any fractional portion less than one share), on each of the first and second anniversaries of the date of grant and as to the remaining option shares on the third anniversary of the date of grant. The date listed is the first anniversary of the date of grant.

References: F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of June 30, 2026. Includes 21.817 UNITS acquired since the reporting person's last report. (The 1,477.401 UNITS are the equivalent of approximately 2,710 SHARES of the issuer's Common Stock.)

F2 Option granted under the Ecolab Inc. 2010 Stock Incentive Plan. The option became or becomes exercisable, on a cumulative basis, as to one-third of the option shares (excluding any fractional portion less than one share), on each of the first and second anniversaries of the date of grant and as to the remaining option shares on the third anniversary of the date of grant. The date listed is the first anniversary of the date of grant.

References:

Reported filing row; may be amended. Do not sum filings blindly.

F1 Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of June 30, 2026. Includes 21.817 UNITS acquired since the reporting person's last report. (The 1,477.401 UNITS are the equivalent of approximately 2,710 SHARES of the issuer's Common Stock.)

F2 Option granted under the Ecolab Inc. 2010 Stock Incentive Plan. The option became or becomes exercisable, on a cumulative basis, as to one-third of the option shares (excluding any fractional portion less than one share), on each of the first and second anniversaries of the date of grant and as to the remaining option shares on the third anniversary of the date of grant. The date listed is the first anniversary of the date of grant.

References:

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 1.18 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 0.89 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 2.70 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 23.62 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 21.51 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 20.47 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References:

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 20.47 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 9.94 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References:

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 9.94 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 24.62 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References:

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 24.62 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 0.55 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 43.39 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 17.51 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

References: F1