Mosaic director exercises RSUs, gets new stock grant

Mosaic Co director Timothy S. Gitzel increased his equity exposure through routine compensation-related transactions.

Rhea-AI Filing Summary

Mosaic Co director Timothy S. Gitzel increased his equity exposure through routine compensation-related transactions. He exercised 4,873 restricted stock units into an equal number of common shares, bringing his directly held common stock to 79,527 shares. The vested units were tied to Mosaic’s 2026 Annual Meeting of Stockholders.

On the same date, he received a new grant of 7,273 restricted stock units, each convertible one-for-one into Mosaic common stock. According to the footnotes, these new units will vest and be paid on the date of Mosaic’s 2027 Annual Meeting of Stockholders, assuming applicable conditions are met.

Insider Trade Summary

4,873 shares exercised/converted

Exercise 3 txns

Insider Gitzel Timothy S.

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	7,273	$0.00	$0.00
Exercise	Restricted Stock Units	4,873	$0.00	$0.00
Exercise	Common Stock	4,873	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 7,273 contracts (Direct); Common Stock — 79,527 shares (Direct)

Footnotes (4)

1. F1. One-for-One
2. F2. The restricted stock units will vest and be paid to the reporting person on the date of the issuer's 2027 Annual Meeting of Stockholders.
3. F3. Not Applicable
4. F4. The restricted stock units vested on the date of the issuer's 2026 Annual Meeting of Stockholders.

Key Figures

RSUs exercised: 4,873 units Common shares after transaction: 79,527 shares New RSU grant: 7,273 units +3 more

6 metrics

RSUs exercised 4,873 units Restricted stock units converted into common stock on May 28, 2026

Common shares after transaction 79,527 shares Direct Mosaic common stock holdings following Form 4 transactions

New RSU grant 7,273 units Restricted stock units granted on May 28, 2026

RSU conversion ratio One-for-one Each restricted stock unit converts into one share of common stock

2026 vesting trigger 2026 Annual Meeting Previously granted RSUs vested on the 2026 Annual Meeting date

2027 vesting trigger 2027 Annual Meeting Newly granted RSUs vest and are paid at the 2027 Annual Meeting

Key Terms

Restricted Stock Units, Exercise or conversion of derivative security, Annual Meeting of Stockholders, Grant, award, or other acquisition

4 terms

Restricted Stock Units financial

"The restricted stock units will vest and be paid to the reporting person on the date of the issuer's 2027 Annual Meeting of Stockholders."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Exercise or conversion of derivative security financial

"transaction_code_description: Exercise or conversion of derivative security"

Annual Meeting of Stockholders financial

"The restricted stock units vested on the date of the issuer's 2026 Annual Meeting of Stockholders."

Grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/01/2026 - 07:24 PM EDT Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Gitzel Timothy S.

(Last) (First) (Middle)

C/O THE MOSAIC COMPANY

101 EAST KENNEDY BLVD., SUITE 2500

(Street)

TAMPA FLORIDA 33602

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/28/2026

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

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

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

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	05/28/2026		M		4,873	A	$0	79,527	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)	05/28/2026		A		7,273		(2)	(3)	Common Stock	7,273	$0	7,273	D
Restricted Stock Units	$0(1)	05/28/2026		M			4,873	(4)	(3)	Common Stock	4,873	$0	0	D

Explanation of Responses:

1. One-for-One

2. The restricted stock units will vest and be paid to the reporting person on the date of the issuer's 2027 Annual Meeting of Stockholders.

3. Not Applicable

4. The restricted stock units vested on the date of the issuer's 2026 Annual Meeting of Stockholders.

Remarks:

	/s/Philip E. Bauer, Attorney-in-Fact for Timothy S. Gitzel	06/01/2026
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)