Mosaic (NYSE: MOS) officer awarded new restricted stock units

Rhea-AI Filing Summary

Mosaic Co principal accounting officer Russell A. Flugel reported awards of restricted stock units. He acquired 8,074 restricted stock units at a price of $0.00 per unit on March 4, 2026, and 11,560 restricted stock units on March 4, 2025, through grant or award transactions. A footnote states that one of these transactions was reported late due to administrative oversight. The award vests cumulatively, with 33% vesting on March 4, 2027, 66% on March 4, 2028, and 100% on March 4, 2029.

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^*

Flugel Russell A

(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)
	Principal Accounting Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2025

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								9,300	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)	03/04/2025(2)		A		11,560		03/04/2028	(3)	Common Stock	11,560	$0	11,560	D
Restricted Stock Units	$0(1)	03/04/2026		A		8,074		(4)	(3)	Common Stock	8,074	$0	8,074	D
Restricted Stock Units	$0(1)							03/09/2026	(3)	Common Stock	4,441		4,441	D
Restricted Stock Units	$0(1)							03/05/2027	(3)	Common Stock	8,540		8,540	D
Restricted Stock Units	$0(1)							11/18/2027	(3)	Common Stock	6,199		6,199	D

Explanation of Responses:

1. One-for-One

2. This transaction is being filed to report a transaction that was inadvertently reported late due to administrative oversight.

3. Not Applicable

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

Remarks:

	/s/ Philip E. Bauer, Attorney-in-Fact for Russell A. Flugel	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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

What insider activity did MOS principal accounting officer Russell Flugel report?

Russell A. Flugel reported acquiring restricted stock units in Mosaic Co through equity awards. He received 8,074 units on March 4, 2026 and 11,560 units on March 4, 2025, all at a stated price of $0.00 per unit as part of compensation.

How many restricted stock units did MOS officer Russell Flugel receive in 2026?

On March 4, 2026, Russell A. Flugel was granted 8,074 restricted stock units. These units were acquired at a stated price of $0.00 per unit, reflecting a non-cash equity compensation award rather than an open-market purchase of Mosaic Co common stock.

Were any of Russell Flugel’s MOS restricted stock unit transactions reported late?

Yes. A footnote explains that one transaction was reported late because of administrative oversight. This indicates the award itself still occurred as described, but the regulatory reporting was delayed and is now being corrected through this Form 4 filing for Mosaic Co.

What is the vesting schedule for Russell Flugel’s Mosaic restricted stock award?

The award vests cumulatively over three years. According to the disclosure, 33% vests on March 4, 2027, 66% vests on March 4, 2028, and 100% vests on March 4, 2029, aligning the officer’s compensation with longer-term company performance.

Does Russell Flugel’s Form 4 for MOS involve open-market stock purchases or sales?

No. The reported transactions involve grants of restricted stock units with a price of $0.00 per unit. They are classified as grant or award acquisitions rather than open-market buys or sells of Mosaic Co common stock, reflecting standard equity-based compensation.

What ownership type is reported for Russell Flugel’s Mosaic equity awards?

The Form 4 classifies Russell A. Flugel’s holdings as direct ownership. The transactions are coded with a direct ownership designation, meaning the restricted stock units and common stock referenced are held directly in his name rather than through an indirect entity.