Mosaic (MOS) EVP gains stock from awards, shares withheld to pay taxes

Rhea-AI Filing Summary

Mosaic Co EVP-Commercial Yijun Wang reported equity award activity on March 9, 2026. Wang received 7,613 shares of common stock from vested performance units and 3,211 additional common shares from equity awards. To cover related tax liabilities, 4,406 shares were withheld at $26.92 per share, leaving direct ownership of 59,613 common shares.

Wang also continues to hold several restricted stock unit awards that can convert into 8,224, 26,528, 20,487 and 29,463 shares of common stock, with one grant scheduled to vest 33% 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^*

Wang Yijun

(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)
	EVP-Commercial

3. Date of Earliest Transaction (Month/Day/Year)
03/09/2026

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	03/09/2026		M		7,613	A	$0	60,808	D
Common Stock	03/09/2026		M(1)		3,211	A	$0	64,019	D
Common Stock	03/09/2026		F(2)		4,406	D	$26.92	59,613	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(3)	03/09/2026		M			7,613	03/09/2026	(4)	Common Stock	7,613	$0	0	D
Restricted Stock Units	$0(3)							01/02/2027	(4)	Common Stock	8,224		8,224	D
Restricted Stock Units	$0(3)							(5)	(4)	Common Stock	26,528		26,528	D
Restricted Stock Units	$0(3)							03/05/2027	(4)	Common Stock	20,487		20,487	D
Restricted Stock Units	$0(3)							03/04/2028	(4)	Common Stock	29,463		29,463	D

Explanation of Responses:

1. 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.

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

3. One-for-One

4. Not Applicable

5. 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.

Remarks:

	/s/ Philip E. Bauer, Attorney-in-Fact for Yijun Wang	03/11/2026
	** 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 did Mosaic (MOS) EVP Yijun Wang report in this Form 4?

EVP-Commercial Yijun Wang reported vesting of equity awards that delivered new Mosaic common shares and a share-withholding transaction to cover taxes. The filing also updates Wang’s direct share ownership and remaining restricted stock unit awards.

How many Mosaic shares did Yijun Wang receive from vested awards?

Yijun Wang received 7,613 Mosaic common shares from a performance unit award and 3,211 additional common shares from equity awards on March 9, 2026. These shares were issued as part of previously granted compensation arrangements, not open-market purchases.

How were taxes handled on Yijun Wang’s Mosaic share vesting?

To satisfy tax liabilities from recent vesting of restricted stock and performance units, 4,406 Mosaic common shares were delivered at $26.92 per share. This is a tax-withholding disposition, meaning shares were used to pay taxes rather than sold in an open-market transaction.

What is Yijun Wang’s Mosaic common stock ownership after these transactions?

Following the March 9, 2026 transactions, Yijun Wang directly owns 59,613 shares of Mosaic common stock. This figure reflects the newly issued shares from vested awards, net of the 4,406 shares delivered to cover associated tax obligations on the vesting events.

What Mosaic restricted stock units does Yijun Wang still hold?

Yijun Wang holds restricted stock units tied to 8,224, 26,528, 20,487 and 29,463 underlying Mosaic shares. One RSU grant is scheduled to vest 33% on March 4, 2027, 66% on March 4, 2028 and 100% on March 4, 2029, subject to its terms.

Were Yijun Wang’s Mosaic transactions open-market buys or sells?

The Form 4 shows no open-market buys or sells. Shares were acquired through vesting and exercise of equity awards, while 4,406 shares were delivered to satisfy tax liabilities. The filing classifies this disposition as payment of tax using securities, not a market sale.