Ecolab director granted 732 stock options

Ecolab Inc. director Michael Larson received a grant of 732 Non-Employee Director Stock Options linked to 732 shares of common stock.

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Rhea-AI Filing Summary

Ecolab Inc. director Michael Larson received a grant of 732 Non-Employee Director Stock Options linked to 732 shares of common stock. The options have an exercise price of $247.7000 per share and expire on May 15, 2036. They vest 25% at the end of each of the first three three-month periods after the grant date, with the remaining shares vesting on the earlier of the end of the fourth three-month period or the company’s next annual meeting. The options become fully exercisable if a Change in Control occurs. Following these transactions, Larson directly holds 19,007.5 shares of Ecolab common stock.

Insider Trade Summary

Grant/Award: 732 shares

Grant/Award 2 txns

Insider LARSON MICHAEL

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Non-Employee Director Stock Option (Right to Buy)	732	$0.00	$0.00
holding	Common Stock	--	--	--

Holdings After Transaction: Non-Employee Director Stock Option (Right to Buy) — 732 contracts (Direct); Common Stock — 19,007.5 shares (Direct)

Footnotes (1)

F1. The option will become exercisable, on a cumulative basis, as to 25% of the option shares (excluding any fractional portion less than one share), on the last day of each of the first, second and third three-month periods following its date of grant and as to the remaining shares on the earlier of the last day of the fourth three-month period following its date of grant or the company's next annual meeting date; provided, however, that if a Change in Control of the Company (as that term is defined in the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan) will occur, then the option will become immediately exercisable in full. The date listed in the Date Exercisable column represents the first vesting date.

Key Figures

Option grant size: 732 options Underlying shares: 732 shares Exercise price: $247.7000 per share +3 more

6 metrics

Option grant size 732 options Non-Employee Director Stock Option grant on May 15, 2026

Underlying shares 732 shares Common stock underlying granted director options

Exercise price $247.7000 per share Strike price for director stock options

Option expiration May 15, 2036 Expiration date of Non-Employee Director Stock Options

Common shares held 19,007.5 shares Direct Ecolab common stock holdings after transactions

Initial vesting portion 25% Portion of option shares vesting at each of first three three-month periods

Key Terms

Non-Employee Director Stock Option, Change in Control, Date Exercisable, Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan

4 terms

Non-Employee Director Stock Option financial

"Non-Employee Director Stock Option (Right to Buy)"

Change in Control financial

"if a Change in Control of the Company will occur, then the option will become immediately exercisable in full"

A "change in control" occurs when the ownership or management of a company shifts significantly, such as through a merger, acquisition, or sale of a large part of its assets. This change can impact how the company is run and may influence its future direction. For investors, it matters because it can affect the company's stability, strategy, and value, often signaling potential changes in investment risk or opportunity.

Date Exercisable financial

"The date listed in the Date Exercisable column represents the first vesting date."

Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan financial

"as that term is defined in the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Ecolab (ECL) director Michael Larson report in this Form 4?

Michael Larson reported a grant of 732 Non-Employee Director Stock Options. These options give him the right to buy 732 Ecolab common shares at a set price, reflecting routine director compensation rather than an open-market purchase or sale.

How many Ecolab (ECL) stock options were granted to Michael Larson?

Michael Larson was granted 732 Non-Employee Director Stock Options. Each option corresponds to one share of Ecolab common stock, creating potential future ownership if exercised according to the vesting schedule and exercise price stated in the filing.

What is the exercise price of Michael Larson’s Ecolab (ECL) stock options?

The options have an exercise price of $247.7000 per share. This means Larson can buy Ecolab common stock at $247.70 per share once the options vest, regardless of the market price at the time of exercise.

When do Michael Larson’s Ecolab (ECL) director stock options vest?

The options vest 25% at the end of each of the first three three-month periods after the grant date. The remaining shares vest on the earlier of the end of the fourth three-month period or Ecolab’s next annual meeting date, enhancing alignment over time.

What happens to Michael Larson’s Ecolab (ECL) options if there is a Change in Control?

If a Change in Control of Ecolab occurs, the options become immediately exercisable in full. This provision, defined in the company’s 2001 Non-Employee Director Stock Option and Deferred Compensation Plan, accelerates vesting under corporate control change scenarios.

How many Ecolab (ECL) common shares does Michael Larson hold after this filing?

After the reported transactions, Michael Larson directly holds 19,007.5 shares of Ecolab common stock. This figure represents his direct ownership position as disclosed, separate from the newly granted stock options that may be exercised in the future.

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Accepted by SEC EDGAR 05/19/2026 - 05:05 PM

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).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

LARSON MICHAEL

(Last)

(First)

(Middle)

C/O ECOLAB INC.

1 ECOLAB PLACE

(Street)

ST. PAUL

MINNESOTA

55102

(City)

(State)

(Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock								19,007.5	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Non-Employee Director Stock Option (Right to Buy)	$247.7	05/15/2026		A		732		08/15/2026⁽¹⁾	05/15/2036	Common Stock	732	$0	732	D

Explanation of Responses:

1. The option will become exercisable, on a cumulative basis, as to 25% of the option shares (excluding any fractional portion less than one share), on the last day of each of the first, second and third three-month periods following its date of grant and as to the remaining shares on the earlier of the last day of the fourth three-month period following its date of grant or the company's next annual meeting date; provided, however, that if a Change in Control of the Company (as that term is defined in the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan) will occur, then the option will become immediately exercisable in full. The date listed in the Date Exercisable column represents the first vesting date.

	/s/ Corinne Lawson, as Attorney-in-Fact for Michael Larson	05/19/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR