Walter F. Precourt III - 09 Mar 2026 Form 4 Insider Report for MOSAIC CO (MOS)

Reporting relationship: SVP - Chief Admin Officer
Issuer ticker: MOS
Reported as of: 09 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 11 Mar 2026, 16:09:19 UTC
Prior SEC filing: 06 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Philip E. Bauer, Attorney-in-Fact for Walter F. Precourt III

Key filing fact

Walter F. Precourt III filed Form 4 for MOSAIC CO (MOS) on 11 Mar 2026.

Key facts

This page summarizes Walter F. Precourt III's Form 4 filing for MOSAIC CO (MOS).
4 reported transactions and 4 derivative rows are listed below.
Accepted by SEC: 11 Mar 2026, 16:09.

Change

Previous filing in this sequence was filed on 06 Mar 2026.
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 0001609765 Primary reporting owner

Precourt Walter F. III

Relationship: SVP - Chief Admin Officer
Address: C/O THE MOSAIC COMPANY, 101 EAST KENNEDY BLVD., SUITE 2500, TAMPA
Signature: /s/ Philip E. Bauer, Attorney-in-Fact for Walter F. Precourt III
Signature date: 11 Mar 2026

Reported non-derivative transactions

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

MOS transaction

Common Stock

Options Exercise

Transaction value
Shares: +12,181
Change %: +9.5%
Price: $0.000000^*
Shares after: 140,727
Date: 09 Mar 2026
Ownership: Direct

MOS transaction

Common Stock

Options Exercise

Transaction value
Shares: +5,138
Change %: +3.7%
Price: $26.92^*
Shares after: 145,865
Date: 09 Mar 2026
Ownership: Direct
Footnotes: F1

MOS transaction

Common Stock

Tax liability

Transaction value
Shares: -6,667
Change %: -4.6%
Price: $26.92^*
Shares after: 139,198
Date: 09 Mar 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

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

MOS transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -12,181
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 09 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 12,181
Exercise price: $0.000000
Footnotes: F3, F4

MOS holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 24,606
Date: 09 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 24,606
Exercise price: $0.000000
Footnotes: F3, F4, F5

MOS holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 20,487
Date: 09 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 20,487
Exercise price: $0.000000
Footnotes: F3, F4

MOS holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 27,730
Date: 09 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 27,730
Exercise price: $0.000000
Footnotes: F3, F4

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

Shares Issued to reporting person upon the vesting of a performance unit award granted to reporting person on March 9, 2023. The performance unit award was not a derivative security.

Footnote F2

Shares sold to cover tax liability incurred as a result of most recent vesting of restricted stock and performance units.

Footnote F3

One-for-One

Footnote F4

Not Applicable

Footnote F5

The Restricted Stock Unit will vest a cumulative vesting percentage equal to 33% on March 4, 2027, 66% on March 4, 2028 and 100% on March 4, 2029.