Mosaic executive sells 23,000 shares at $22.12

MOSAIC CO (MOS) executive Walter F. Precourt III, SVP – Chief Admin Officer, reported an open-market sale of 23,000 shares of Common Stock on 2026-08-19 at a weighted average price of $22.12, with individual trade prices from $22.11 to $22.13.

Rhea-AI Filing Summary

MOSAIC CO (MOS) executive Walter F. Precourt III, SVP – Chief Admin Officer, reported an open-market sale of 23,000 shares of Common Stock on 2026-08-19 at a weighted average price of $22.12, with individual trade prices from $22.11 to $22.13. Following the sale, he directly holds 116,198 Common shares, plus Restricted Stock Units convertible on a one-for-one basis into 24,606, 20,487, and 27,730 shares of Common Stock at a $0.00 exercise price. The filing’s Rule 10b5-1 checkbox indicates the transaction was not made pursuant to a Rule 10b5-1 trading plan.

Insider Trade Summary

Net Seller: 23,000 shares

Net Sell 4 txns

Insider Precourt Walter F. III

Role SVP - Chief Admin Officer

Sold 23,000 shs ($509K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	23,000	$22.12	$509K
holding	Restricted Stock Units F2, F3, F4	--	--	--
holding	Restricted Stock Units F2, F4	--	--	--
holding	Restricted Stock Units F2, F4	--	--	--

Holdings After Transaction: Common Stock — 116,198 shares (Direct); Restricted Stock Units — 72,823 contracts (Direct)

Footnotes (4)

1. F1. The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $22.11 to $22.13, inclusive. The reporting person undertakes to provide to The Mosaic Company, any security holder of The Mosaic Company, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth above.
2. F2. One-for-One
3. F3. 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.
4. F4. Not Applicable

Key Figures

Shares sold: 23,000 shares of Common Stock Weighted average sale price: $22.12 per share Sale price range: $22.11–$22.13 per share +5 more

8 metrics

Shares sold 23,000 shares of Common Stock Open-market sale by Walter F. Precourt III on 2026-08-19

Weighted average sale price $22.12 per share Weighted average price for the 23,000 MOS shares sold

Sale price range $22.11–$22.13 per share Range of prices for multiple sale transactions on 2026-08-19

Shares owned after transaction 116,198 shares of Common Stock Direct MOS Common Stock holdings following the sale

RSUs underlying shares (award 1) 24,606 underlying shares of Common Stock Direct Restricted Stock Units with one-for-one conversion

RSUs underlying shares (award 2) 20,487 underlying shares of Common Stock Direct Restricted Stock Units with one-for-one conversion

RSUs underlying shares (award 3) 27,730 underlying shares of Common Stock Direct Restricted Stock Units with one-for-one conversion

RSU exercise price $0.0000 per share Exercise price for reported MOS Restricted Stock Units

Key Terms

Restricted Stock Units, weighted average price, Rule 10b5-1 trading plan, one-for-one

4 terms

Restricted Stock Units financial

"The filing lists three direct RSU positions, each convertible one-for-one"

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.

weighted average price financial

"The price reported in Column 4 is weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Rule 10b5-1 trading plan regulatory

"The filing’s Rule 10b5-1 checkbox indicates the transaction was not made"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

one-for-one financial

"One-for-One"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

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

Walter F. Precourt III reported an open-market sale of 23,000 MOS Common shares on 2026-08-19. The shares were sold at a weighted average price of $22.12, with individual trades between $22.11 and $22.13, as disclosed in the Form 4 footnote.

At what price were the MOS shares sold in this Form 4 filing?

The 23,000 MOS shares were sold at a weighted average price of $22.12 per share. According to the disclosure, the sales occurred in multiple transactions at prices ranging from $22.11 to $22.13, inclusive, with full trade detail available upon request.

How many MOS shares does Walter F. Precourt III own after the reported sale?

After the reported sale, Walter F. Precourt III directly owns 116,198 shares of MOS Common Stock. This figure reflects his direct Common Stock holdings immediately following the 23,000-share disposition on 2026-08-19.

What Restricted Stock Unit (RSU) positions related to MOS Common Stock are reported?

The filing lists three direct RSU positions, each convertible one-for-one into MOS Common Stock: 24,606 underlying shares, 20,487 underlying shares, and 27,730 underlying shares. All have an exercise price of $0.0000 per share.

Was the MOS insider sale made under a Rule 10b5-1 trading plan?

No. The Form 4’s Rule 10b5-1 checkbox is not checked, and the filing does not state that the 23,000-share sale of MOS Common Stock on 2026-08-19 was made pursuant to a Rule 10b5-1 trading plan.

What is the vesting information disclosed for the MOS Restricted Stock Units?

One RSU award is disclosed as vesting at a cumulative percentage of 33% on March 4, 2027, 66% on March 4, 2028, and 100% on March 4, 2029. This vesting schedule applies to the RSU award referenced by that specific footnote.

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

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Available on EDGAR 08/21/2026 - 04:13 PM Accepted by SEC EDGAR 08/21/2026 - 04:13 PM 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^*

Precourt Walter F. III

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/19/2026

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	08/19/2026		S		23,000	D	$22.12(1)	116,198	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(2)							(3)	(4)	Common Stock	24,606		24,606	D
Restricted Stock Units	$0(2)							03/05/2027	(4)	Common Stock	20,487		20,487	D
Restricted Stock Units	$0(2)							03/04/2028	(4)	Common Stock	27,730		27,730	D

Explanation of Responses:

1. The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $22.11 to $22.13, inclusive. The reporting person undertakes to provide to The Mosaic Company, any security holder of The Mosaic Company, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth above.

2. One-for-One

3. 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.

4. Not Applicable

Remarks:

	/s/ Philip E. Bauer, Attorney-in-Fact for Walter F. Precourt III	08/20/2026
	** 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)