Ecolab (NYSE: ECL) director adds 7,750 shares in open-market stock purchase

Rhea-AI Filing Summary

ECOLAB INC. director Michel D. Doukeris reported an open-market purchase of 7,750 shares of common stock at a weighted average price of $258.00 per share. The trade was executed in multiple lots between $257.97 and $258.00. Following this transaction, he directly owns 8,326.26 shares.

Insider Trade Summary

Net Buyer: 7,750 shares ($1,999,500)

Net Buy 1 txn

Insider Doukeris Michel D

Role null

Bought 7,750 shs ($2.00M)

Type	Security	Shares	Price	Value
Purchase	Common Stock	7,750	$258.00	$2.00M

Holdings After Transaction: Common Stock — 8,326.26 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares purchased: 7,750 shares Weighted average price: $258.00 per share Post-transaction holdings: 8,326.26 shares +1 more

4 metrics

Shares purchased 7,750 shares Open-market purchase of Ecolab common stock

Weighted average price $258.00 per share Price paid for purchased shares

Post-transaction holdings 8,326.26 shares Total common shares directly owned after trade

Trade price range $257.97–$258.00 Range of prices across multiple executed trades

Key Terms

open-market purchase, weighted average purchase price, Form 4, transaction code "P"

4 terms

open-market purchase financial

"reported an open-market purchase of 7,750 shares of common stock"

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

weighted average purchase price financial

"The price reported above reflects the weighted average purchase price"

The weighted average purchase price is the average cost per share you paid across multiple buys, calculated so larger purchases count more than smaller ones. Imagine buying apples at different prices: the overall price you effectively paid depends on how many apples you bought at each price. Investors use it to measure true cost basis, calculate gains or losses, decide when to sell, and manage taxes and portfolio performance.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

transaction code "P" regulatory

"transaction_code_description": "Purchase in open market or private transaction""

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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^*

Doukeris Michel D

(Last) (First) (Middle)

C/O ECOLAB INC.

1 ECOLAB PLACE

(Street)

ST. PAUL MINNESOTA 55413

(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)
06/10/2026

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	06/10/2026		P		7,750	A	$258(1)	8,326.26	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. This transaction was executed in multiple trades at prices ranging from $257.97 to $258.00, 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.

	/s/ Youhao Dong, as Attorney-in-Fact for Michel D. Doukeris	06/11/2026
	** 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 did Ecolab (ECL) director Michel D. Doukeris report in this Form 4?

He reported an open-market purchase of 7,750 Ecolab common shares. The filing shows this as a direct ownership transaction, increasing his holdings and reflecting a net-buy position in the company’s stock.

At what price did the Ecolab (ECL) director buy the 7,750 shares?

The weighted average purchase price was $258.00 per share. A footnote explains the trade was executed in multiple lots, with individual prices ranging from $257.97 to $258.00 during the same trading day.

How many Ecolab (ECL) shares does Michel D. Doukeris own after this transaction?

After the purchase, he directly owns 8,326.26 Ecolab common shares. The Form 4 lists this as the total shares following the transaction, indicating his updated direct equity position in the company.

What type of transaction is disclosed in this Ecolab (ECL) Form 4?

The filing discloses an open-market purchase of common stock, coded as “P.” This code represents a standard buy transaction in the market or a private transaction, rather than an option exercise, gift, or tax-related share withholding.

Was the Ecolab (ECL) stock purchase by the director done in a single trade?

No, the footnote states the transaction occurred in multiple trades. These trades were executed at prices between $257.97 and $258.00, with the reported $258.00 figure representing the weighted average purchase price across all lots.