Ecolab (ECL) director Marion Gross receives 137.82-share stock award

Rhea-AI Filing Summary

Ecolab Inc. director Marion K. Gross reported receiving a stock-based award of 137.82 shares of Common Stock on March 31, 2026 at no cash cost, classified as a grant or other acquisition. After this award, her direct holdings total 466.01 shares, including 0.52 shares acquired through a dividend reinvestment feature of Ecolab’s 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Gross Marion K.

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	137.82	$0.00	--

Holdings After Transaction: Common Stock — 466.01 shares (Direct)

Footnotes (1)

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Key Figures

Stock award size: 137.82 shares Holdings after transaction: 466.01 shares Dividend reinvestment shares: 0.52 shares +1 more

4 metrics

Stock award size 137.82 shares Common Stock grant on March 31, 2026

Holdings after transaction 466.01 shares Total direct Ecolab common stock after award

Dividend reinvestment shares 0.52 shares Acquired via dividend reinvestment feature of director plan

Transaction price per share $0.0000 Indicates compensation-related grant, not market purchase

Key Terms

Common Stock, dividend reinvestment, 2001 Non-Employee Director Stock Option and Deferred Compensation Plan, Grant, award, or other acquisition

4 terms

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

dividend reinvestment financial

"Includes 0.52 shares acquired pursuant to a dividend reinvestment feature"

Dividend reinvestment is when the money earned from a company's profit sharing, called dividends, is automatically used to buy more shares of that company instead of being received as cash. This process helps investors grow their holdings over time without extra effort, much like using earned interest to buy more of a savings account. It encourages long-term investment growth by continuously increasing the amount of shares owned.

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

"feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan"

Grant, award, or other acquisition financial

"transaction_code_description: "Grant, award, or other acquisition""

Form 4 Insider Transactions: What Each Field Means →

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^*

Gross Marion K.

(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)
03/31/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/31/2026		A		137.82	A	$0	466.01(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 0.52 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 Marion K. Gross	04/02/2026
	** 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)

FAQ

What insider transaction did Ecolab (ECL) director Marion K. Gross report?

Marion K. Gross reported receiving a grant of 137.82 shares of Ecolab common stock. The award was recorded on March 31, 2026 and classified as a grant, award, or other acquisition rather than an open-market purchase or sale.

How many Ecolab (ECL) shares does Marion K. Gross hold after this Form 4?

After the reported award, Marion K. Gross directly holds 466.01 shares of Ecolab common stock. This total includes the newly granted 137.82 shares and reflects all directly owned shares as shown in the filing’s post-transaction ownership figure.

Was the Ecolab (ECL) stock grant to Marion K. Gross an open-market purchase?

No, the 137.82 shares were reported with transaction code A, meaning a grant, award, or other acquisition. The transaction price per share is listed as 0.0000, indicating it was a compensation-related award, not an open-market purchase on an exchange.

What is the role of dividend reinvestment in Marion K. Gross’s Ecolab (ECL) holdings?

The filing notes that 0.52 of her Ecolab shares were acquired through a dividend reinvestment feature. This feature is part of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan and automatically reinvests dividends into additional shares.

What does transaction code A mean in the Ecolab (ECL) Form 4 filing?

Transaction code A in the Form 4 indicates a grant, award, or other acquisition of securities. In this case, it reflects a stock-based award of 137.82 Ecolab common shares to director Marion K. Gross, rather than a purchase or sale in the open market.