Ecolab director David MacLennan receives stock awards

ECOLAB INC. director David MacLennan reported stock awards of common shares.

Rhea-AI Filing Summary

ECOLAB INC. director David MacLennan reported stock awards of common shares. On March 31, 2026, he received 137.82 shares of Ecolab common stock at no cost and an additional 48.71 shares valued at $263.03 per share as grant or award acquisitions.

Following these awards, MacLennan directly owns 23,430.01 common shares of Ecolab. The filing also reports indirect ownership of 3,500 shares held by the Kathleen F. MacLennan Revocable Trust and 709 shares held by sibling's trusts. A footnote states that 19.43 shares were acquired through a dividend reinvestment feature of an Ecolab director compensation plan.

Insider Trade Summary

Grant/Award: 186.53 shares

Grant/Award 4 txns

Insider MacLennan David

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	137.82	$0.00	$0.00
Grant/Award	Common Stock	48.71	$263.03	$13K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 23,430.01 shares (Direct); Common Stock — 3,500 shares (Indirect, By Kathleen F. MacLennan Revocable Trust u/a dated 11/07/2002); Common Stock — 709 shares (Indirect, By sibling's trusts)

Footnotes (1)

1. F1. Includes 19.43 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan.

Key Figures

Awarded shares (no-cost grant): 137.82 shares Awarded shares (priced grant): 48.71 shares at $263.03/share Total shares awarded: 186.53 shares +4 more

7 metrics

Awarded shares (no-cost grant) 137.82 shares Common stock grant on March 31, 2026

Awarded shares (priced grant) 48.71 shares at $263.03/share Common stock grant on March 31, 2026

Total shares awarded 186.53 shares Sum of reported March 31, 2026 stock awards

Direct holdings after transactions 23,430.01 shares Common stock directly owned after March 31, 2026 awards

Indirect trust holdings (revocable trust) 3,500 shares Held by Kathleen F. MacLennan Revocable Trust

Indirect holdings (sibling's trusts) 709 shares Held by sibling's trusts

Dividend reinvestment shares 19.43 shares Acquired via dividend reinvestment feature of director plan

Key Terms

dividend reinvestment feature, Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan, indirect ownership, revocable trust

4 terms

dividend reinvestment feature financial

"Includes 19.43 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001..."

Ecolab Inc. 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."

indirect ownership financial

"The filing also reports indirect ownership of 3,500 shares held by the Kathleen F. MacLennan Revocable Trust..."

revocable trust financial

"By Kathleen F. MacLennan Revocable Trust u/a dated 11/07/2002"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

FAQ

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

What did Ecolab (ECL) director David MacLennan report in this Form 4?

David MacLennan reported receiving additional Ecolab common shares as compensation-related stock awards. The filing shows two award acquisitions on March 31, 2026, along with updated totals for his direct and indirect holdings in the company’s common stock.

How many Ecolab (ECL) shares did David MacLennan acquire?

David MacLennan acquired 137.82 Ecolab common shares at no cost and 48.71 additional shares valued at $263.03 per share. Together, these compensation awards total 186.53 shares and increase his overall reported ownership stake in Ecolab.

What are David MacLennan’s direct Ecolab (ECL) share holdings after the awards?

After the March 31, 2026 awards, David MacLennan directly owns 23,430.01 Ecolab common shares. This figure reflects his updated direct position following the two reported grant or award acquisitions disclosed in the Form 4 filing.

What indirect Ecolab (ECL) holdings related to David MacLennan are disclosed?

The filing reports 3,500 Ecolab common shares held indirectly through the Kathleen F. MacLennan Revocable Trust and 709 shares held by sibling’s trusts. These amounts represent indirect ownership interests associated with MacLennan in addition to his direct holdings.

What does the dividend reinvestment feature mean in this Ecolab (ECL) filing?

The footnote explains that 19.43 shares were acquired via a dividend reinvestment feature of Ecolab’s 2001 Non-Employee Director Stock Option and Deferred Compensation Plan. This means cash dividends were automatically used to buy additional Ecolab shares for the director.

Were David MacLennan’s Ecolab (ECL) transactions open-market buys or compensation awards?

The transactions are classified as grant or award acquisitions, not open-market purchases. Both reported entries use code A, indicating stock awards or similar acquisitions tied to compensation arrangements rather than discretionary buying or selling in the open market.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/02/2026 - 05:04 PM Learn about SEC filing dates

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^*

MacLennan David

(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	23,381.3(1)	D
Common Stock	03/31/2026		A		48.71	A	$263.03	23,430.01	D
Common Stock								3,500	I	By Kathleen F. MacLennan Revocable Trust u/a dated 11/07/2002
Common Stock								709	I	By sibling's trusts

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 19.43 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 David W. MacLennan	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)