STOCK TITAN

Mosaic (MOS) director acquires shares and receives 7,273 RSUs

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Mosaic Co director Emery N. Koenig reported equity compensation activity involving restricted stock units. He exercised 4,873 restricted stock units into 4,873 shares of common stock in connection with vesting on the date of Mosaic’s 2026 Annual Meeting of Stockholders, bringing his direct holdings to 86,228 shares of common stock.

Koenig also received a new grant of 7,273 restricted stock units, which will vest and be paid on the date of Mosaic’s 2027 Annual Meeting of Stockholders. Each restricted stock unit corresponds one-for-one to a share of common stock. No open-market purchases or sales were reported in this filing.

Positive

  • None.

Negative

  • None.
Insider Koenig Emery N.
Role null
Type Security Shares Price Value
Grant/Award Restricted Stock Units 7,273 $0.00 --
Exercise Restricted Stock Units 4,873 $0.00 --
Exercise Common Stock 4,873 $0.00 --
Holdings After Transaction: Restricted Stock Units — 7,273 shares (Direct, null); Common Stock — 86,228 shares (Direct, null)
Footnotes (1)
  1. One-for-One 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. Not Applicable The restricted stock units vested on the date of the issuer's 2026 Annual Meeting of Stockholders.
RSUs exercised into common stock 4,873 shares Restricted stock units converted to Mosaic common stock on May 28, 2026
New RSU grant 7,273 units Restricted stock units granted on May 28, 2026, vesting at 2027 Annual Meeting
Shares owned after transaction 86,228 shares Direct Mosaic common stock holdings following Form 4 transactions
Exercise price per RSU $0.00 per unit Non-cash derivative exercise of 4,873 restricted stock units
One-for-one conversion ratio 1 unit = 1 share Each restricted stock unit corresponds to one Mosaic common share
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.
derivative security financial
"transaction_code_description": "Exercise or conversion of derivative security""
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
Annual Meeting of Stockholders 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."
Grant, award, or other acquisition financial
"transaction_code_description": "Grant, award, or other acquisition""
One-for-One financial
"One-for-One"
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SEC Form 4
FORM 4UNITED 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*
Koenig Emery N.

(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)
XDirector10% 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)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock05/28/2026M4,873A$086,228D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units$0(1)05/28/2026A7,273 (2) (3)Common Stock7,273$07,273D
Restricted Stock Units$0(1)05/28/2026M4,873 (4) (3)Common Stock4,873$00D
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 Emery N. Koenig06/01/2026
** Signature of Reporting PersonDate
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)

FAQ

What insider transactions did Mosaic (MOS) director Emery N. Koenig report?

Emery N. Koenig reported equity compensation activity, not market trades. He exercised 4,873 restricted stock units into the same number of Mosaic common shares and received a new grant of 7,273 restricted stock units linked one-for-one to common stock.

How many Mosaic (MOS) shares does Emery N. Koenig hold after these transactions?

After exercising restricted stock units, Emery N. Koenig directly holds 86,228 shares of Mosaic common stock. This figure reflects his position following the May 28, 2026 transactions disclosed, excluding the new 7,273 restricted stock units that will vest in the future.

Did Mosaic (MOS) director Emery N. Koenig sell any shares in this Form 4?

No, the Form 4 shows no open-market sales or purchases. The activity consists of exercising 4,873 restricted stock units into common shares and receiving a grant of 7,273 new restricted stock units as part of equity compensation arrangements.

What are the terms of Emery N. Koenig’s new 7,273 Mosaic (MOS) restricted stock units?

Koenig’s 7,273 restricted stock units convert one-for-one into Mosaic common stock. According to the disclosure, these units will vest and be paid on the date of Mosaic’s 2027 Annual Meeting of Stockholders, subject to the plan’s standard conditions.

When did the previously granted Mosaic (MOS) restricted stock units vest for Emery N. Koenig?

The previously granted restricted stock units vested on the date of Mosaic’s 2026 Annual Meeting of Stockholders. Upon vesting, Emery N. Koenig exercised 4,873 units, receiving 4,873 shares of Mosaic common stock in a non-cash derivative exercise transaction.