Luciano Siani Pires - 04 Mar 2026 Form 4 Insider Report for MOSAIC CO (MOS)

Reporting relationship: EVP and CFO
Issuer ticker: MOS
Reported as of: 04 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 06 Mar 2026, 13:22:02 UTC
Prior SEC filing: 06 Mar 2025
Source filing: View source filing
Reporting owner signature: /s/ Philip E. Bauer, Attorney-in-fact for Luciano Siani Pires

Key filing fact

Luciano Siani Pires filed Form 4 for MOSAIC CO (MOS) on 06 Mar 2026.

Key facts

This page summarizes Luciano Siani Pires's Form 4 filing for MOSAIC CO (MOS).
1 reported transaction and 3 derivative rows are listed below.
Accepted by SEC: 06 Mar 2026, 13:22.

Change

Previous filing in this sequence was filed on 06 Mar 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001727455 Primary reporting owner

Pires Luciano Siani

Relationship: EVP and CFO
Address: C/O THE MOSAIC COMPANY, 101 EAST KENNEDY BLVD., SUITE 2500, TAMPA
Signature: /s/ Philip E. Bauer, Attorney-in-fact for Luciano Siani Pires
Signature date: 06 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MOS holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 10,000
Date: 04 Mar 2026
Ownership: Waterside International Ventures Limited

MOS holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 6,040
Date: 04 Mar 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MOS transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +38,447
Change %
Price: $0.000000^*
Shares after: 38,447
Date: 04 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 38,447
Exercise price: $0.000000
Footnotes: F1, F2, F3

MOS holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 15,498
Date: 04 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 15,498
Exercise price: $0.000000
Footnotes: F1, F3

MOS holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 43,328
Date: 04 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 43,328
Exercise price: $0.000000
Footnotes: F1, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

One-for-One

Footnote F2

The award vests cumulatively as follows: 33% on March 4, 2027, 66% on March 4, 2028 and 100% on March 4, 2029.

Footnote F3

Not Applicable