STOCK TITAN

Ecolab (ECL) director David MacLennan purchases 1,000 common shares

Filing Impact
(Moderate)
Filing Sentiment
(Positive)
Form Type
4

Rhea-AI Filing Summary

ECOLAB INC. director David MacLennan reported an open-market purchase of 1,000 shares of Common Stock at $250.65 per share. Following this buy, he directly holds 25,230.01 shares. He also reports indirect holdings of 709 shares through sibling's trusts and 3,500 shares through a revocable trust.

Positive

  • None.

Negative

  • None.
Insider MacLennan David
Role null
Bought 1,000 shs ($251K)
Type Security Shares Price Value
Purchase Common Stock 1,000 $250.65 $251K
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 25,230.01 shares (Direct, null); Common Stock — 3,500 shares (Indirect, By Kathleen F. MacLennan Revocable Trust u/a dated 11/07/2002)
Footnotes (1)
Shares purchased 1,000 shares Open-market purchase of Common Stock
Purchase price $250.65 per share Price paid for purchased shares
Direct holdings after transaction 25,230.01 shares Common Stock held directly after purchase
Indirect holdings via sibling's trusts 709 shares Common Stock held indirectly
Indirect holdings via revocable trust 3,500 shares Common Stock held through revocable trust
Net buy shares 1,000 shares Net buy-sell activity in period
open-market purchase financial
"transaction_action": "open-market purchase""
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.
indirect ownership financial
""ownership_type": "indirect""
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.
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" financial
""transaction_code": "P""
SEC Form 4
FORM 4UNITED 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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock05/13/2026P1,000A$250.6525,230.01D
Common Stock3,500IBy Kathleen F. MacLennan Revocable Trust u/a dated 11/07/2002
Common Stock709IBy 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
/s/ Corinne Lawson, as Attorney-in-Fact for David W. MacLennan05/14/2026
** Signature of Reporting PersonDate
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 David MacLennan do in this Form 4?

David MacLennan reported an open-market purchase of 1,000 Ecolab common shares. The transaction was coded "P," indicating a purchase in the open market or a private transaction, and increased his directly held stake in the company.

How many Ecolab (ECL) shares did David MacLennan buy and at what price?

He bought 1,000 shares of Ecolab common stock at $250.65 per share. This was reported as a non-derivative, open-market purchase, reflecting a direct increase in his personal share ownership.

What is David MacLennan’s direct Ecolab (ECL) ownership after this transaction?

After the reported purchase, David MacLennan directly owns 25,230.01 shares of Ecolab common stock. This figure reflects his direct holdings only and excludes any shares reported as indirectly owned through trusts.

What indirect Ecolab (ECL) holdings are reported for David MacLennan?

The filing lists 709 Ecolab shares held indirectly through sibling's trusts and 3,500 shares held through the Kathleen F. MacLennan Revocable Trust. These positions are categorized as indirect ownership, separate from his directly held shares.

What transaction codes appear in this Ecolab (ECL) Form 4 for David MacLennan?

The primary transaction uses code "P," meaning an open-market or private purchase. Two additional entries are labeled as holdings with unknown codes, reflecting indirect ownership positions reported without a specific buy or sell designation.

Does this Ecolab (ECL) Form 4 show any stock sales by David MacLennan?

No stock sales are reported in this Form 4. The summary data shows one purchase totaling 1,000 shares and no sell transactions, resulting in a net-buy position for the reporting period.