LARSON MICHAEL 4

4 · ECOLAB INC. · Filed May 19, 2026

AI-generated summary of this filing

Updated May 19, 2026

Ecolab (ECL) Director Michael Larson Receives Option Grant — 732 Shares

What Happened

Michael Larson, a director of Ecolab Inc. (ECL), received a derivative equity award on 2026-05-15 covering 732 shares. The filing reports an acquisition price of $0.00, indicating a non-cash option/award grant rather than an open-market purchase or sale.

Key Details

Transaction date: 2026-05-15; Form 4 filed 2026-05-19.
Transaction type: Award/Grant (derivative) — 732 option shares acquired at $0.00 per share.
Vesting: The option vests 25% at the end of each of the first three three-month periods following the grant, with the remainder vesting at the earlier of the end of the fourth three-month period or the company’s next annual meeting. The option becomes fully exercisable immediately upon a defined Change in Control.
Shares owned after transaction: not specified in the provided filing excerpt.
Timeliness: filing date is 2026-05-19 for a 2026-05-15 transaction (timeliness not specified in excerpt).

Context

This was a grant of an equity award (an option-style derivative) subject to time-based vesting, not an open-market purchase or sale. Such grants compensate directors and align incentives but are not direct signals of buying or selling by the insider. The award includes standard acceleration on a Change in Control.

Form 4

Period: 2026-05-15

Director

Transactions

Award
Non-Employee Director Stock Option (Right to Buy)
[F1]
2026-05-15+732→ 732 total
Exercise: $247.70From: 2026-08-15Exp: 2036-05-15→ Common Stock (732 underlying)

Holdings

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.

Signature

/s/ Corinne Lawson, as Attorney-in-Fact for Michael Larson|2026-05-19

1 file