Executive at Mosaic (MOS) granted 24,606 Restricted Stock Units

Rhea-AI Filing Summary

MOSAIC CO senior vice president and chief administrative officer Walter F. Precourt III received a grant of 24,606 Restricted Stock Units on March 4, 2026 at a stated price of $0.00 per unit, reported as a direct acquisition.

According to the accompanying footnote, this award vests cumulatively, with 33% on March 4, 2027, 66% on March 4, 2028, and 100% on March 4, 2029. As of March 4, 2026, he directly held 24,606 Restricted Stock Units and 128,546 shares of common stock.

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

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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^*

Precourt Walter F. III

(Last) (First) (Middle)

C/O THE MOSAIC COMPANY

101 EAST KENNEDY BLVD., SUITE 2500

(Street)

TAMPA FL 33602

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MOSAIC CO [ MOS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP - Chief Admin Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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								128,546	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
Restricted Stock Units	$0(1)	03/04/2026		A		24,606		(2)	(3)	Common Stock	24,606	$0	24,606	D
Restricted Stock Units	$0(1)							03/09/2026	(3)	Common Stock	12,181		12,181	D
Restricted Stock Units	$0(1)							03/05/2027	(3)	Common Stock	20,487		20,487	D
Restricted Stock Units	$0(1)							03/04/2028	(3)	Common Stock	27,730		27,730	D

Explanation of Responses:

1. One-for-One

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

3. Not Applicable

Remarks:

	/s/ Philip E. Bauer, Attorney-in-Fact for Walter F. Precourt III	03/06/2026
	** 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).
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FAQ

What insider transaction did MOS report for Walter F. Precourt III?

MOSAIC CO reported that Walter F. Precourt III received a grant of 24,606 Restricted Stock Units on March 4, 2026. The units were granted at a stated price of $0.00 per unit as a form of equity compensation.

How do the new Restricted Stock Units for MOS’s executive vest over time?

The 24,606 Restricted Stock Units for Walter F. Precourt III vest cumulatively. The award vests 33% on March 4, 2027, 66% on March 4, 2028, and 100% on March 4, 2029, based on the disclosed schedule.

What MOS equity holdings did Walter F. Precourt III report after the grant?

As of March 4, 2026, Walter F. Precourt III directly held 24,606 Restricted Stock Units and 128,546 shares of Mosaic common stock. These figures reflect his reported direct ownership following the newly granted RSU award.

What role does Walter F. Precourt III hold at MOSAIC CO?

Walter F. Precourt III is reported as an officer of MOSAIC CO, serving as Senior Vice President – Chief Administrative Officer. The Form 4 links his equity grant to this executive leadership position at the company.

Does the MOS Form 4 show any stock sales by Walter F. Precourt III?

The disclosed Form 4 shows an acquisition of 24,606 Restricted Stock Units as a grant and does not report any sell transactions. Other lines describe holdings and share balances, not open-market sales or disposals.