Mosaic SVP Martus holds 21,651 common shares

Q: How many MOS shares does Christopher Edward Martus hold?

Christopher Edward Martus held 21,651 common shares directly as of November 1, 2026. The report also lists direct restricted stock units covering 2,669, 3,901 and 2,884 underlying common shares.

Q: When do Christopher Edward Martus's MOS restricted stock units vest?

The restricted-stock-unit entry covering 2,884 underlying common shares has cumulative vesting of 33% on March 4, 2027, 66% on March 4, 2028 and 100% on March 4, 2029.

The restricted-stock-unit entry covering 2,884 underlying shares has cumulative vesting milestones from March 2027 through March 2029.

Available on EDGAR 11/04/2026 - 04:11 PM EST Accepted by SEC EDGAR 11/04/2026 - 04:10 PM EST

Filing Impact

(Moderate)

Filing Sentiment

(Neutral)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

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Form Type

Rhea-AI Filing Summary

MOSAIC CO SVP - Supply Chain Christopher Edward Martus reported direct holdings of 21,651 common shares as of November 1, 2026, alongside three direct restricted-stock-unit positions covering 2,669, 3,901 and 2,884 underlying common shares. The 2,884-share entry has a cumulative vesting schedule through March 2029.

Insider Trade Summary

Holdings reported, no transactions

Holdings

Insider Martus Christopher Edward

Role SVP - Supply Chain

Type	Security	Shares	Price	Value
Holding	Restricted Stock Units ^{F1, F2}	--	--	--
Holding	Restricted Stock Units ^{F1, F2}	--	--	--
Holding	Restricted Stock Units ^{F1, F3, F2}	--	--	--
Holding	Common Stock	--	--	--

Holdings: Restricted Stock Units — 9,454 contracts (Direct); Common Stock — 21,651 shares (Direct)

Footnotes (3)

F1. One-for-One
F2. Not Applicable
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.

Key Figures

Direct common-stock holding: 21,651 shares Restricted stock units: 2,669 underlying common shares Restricted stock units: 3,901 underlying common shares +4 more

7 metrics

Direct common-stock holding 21,651 shares As of November 1, 2026

Restricted stock units 2,669 underlying common shares Direct holding reported November 1, 2026

Restricted stock units 3,901 underlying common shares Direct holding reported November 1, 2026

Restricted stock units 2,884 underlying common shares Direct holding with a stated cumulative vesting schedule

Cumulative vesting percentage 33% March 4, 2027

Cumulative vesting percentage 66% March 4, 2028

Cumulative vesting percentage 100% March 4, 2029

Key Terms

Restricted Stock Unit, One-for-One, cumulative vesting percentage

3 terms

Restricted Stock Unit financial

"The Restricted Stock Unit will vest"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

One-for-One technical

"One-for-One"

cumulative vesting percentage financial

"vest a cumulative vesting percentage equal to 33%"

FAQ

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

How many MOS shares does Christopher Edward Martus hold?

Christopher Edward Martus held 21,651 common shares directly as of November 1, 2026. The report also lists direct restricted stock units covering 2,669, 3,901 and 2,884 underlying common shares.

When do Christopher Edward Martus's MOS restricted stock units vest?

The restricted-stock-unit entry covering 2,884 underlying common shares has cumulative vesting of 33% on March 4, 2027, 66% on March 4, 2028 and 100% on March 4, 2029.

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

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SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Martus Christopher Edward

(Last)

(First)

(Middle)

101 EAST KENNEDY BLVD

SUITE 2500

(Street)

TAMPA

FLORIDA

33602

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
11/01/2026

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

3a. Foreign Trading Symbol

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

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	SVP - Supply Chain

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	21,651	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Restricted Stock Units	03/05/2027	⁽²⁾	Common Stock	2,669	$0⁽¹⁾	D
Restricted Stock Units	03/04/2028	⁽²⁾	Common Stock	3,901	$0⁽¹⁾	D
Restricted Stock Units	⁽³⁾	⁽²⁾	Common Stock	2,884	$0⁽¹⁾	D

Explanation of Responses:

1. One-for-One

2. Not Applicable

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.

Remarks:

	/s/ Philip E. Bauer, Attorney-in-Fact for Christopher E. Martus	11/04/2026
	** 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 5 (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 3: SEC 1473 (03-26)

Source: View Original Filing on SEC EDGAR