MOSAIC CO — Director's Dealing 2010

Aug 4, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MOSAIC CO (MOS)
CIK: 0001285785
Period of Report: 2010-08-02

Reporting Person: REDDING CINDY C (VP-Human Resources)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-08-02	Common Stock	M	5933	$0.00	Acquired	5933	Direct
2010-08-02	Common Stock	F	1941	$49.39	Disposed	3992	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-08-02	Restricted Stock Units	$0.00	M	5933	Disposed		Common Stock (5933)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1041.505	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (Right to Buy)	$40.03	2017-08-02	Common Stock (8194)	8194	Direct
Stock Option (Right to Buy)	$127.21	2018-07-31	Common Stock (2560)	2560	Direct
Restricted Stock Units	$0.00		Common Stock (1376)	1376	Direct
Stock Option (Right to Buy)	$52.72	2019-07-27	Common Stock (5409)	5409	Direct
Restricted Stock Units	$0.00		Common Stock (5121)	5121	Direct
Stock Option (Right to Buy)	$44.93	2020-07-27	Common Shares (8104)	8104	Direct
Restricted Stock Units	$0.00		Common Shares (4451)	4451	Direct

Footnotes

F1: One-for-One

F2: Not Applicable

F3: Grant Date 07/31/2008; option becomes exercisable in three equal installments commencing on the first anniversary of the grant date and on each anniversary thereafter.

F4: Grant Date 07/27/2009; option becomes exercisable in three equal installments commencing on the first anniversary of the grant date and on each anniversary thereafter.

F5: Grant Date 07/27/2010; option becomes exercisable in three equal installments commencing on the first anniversary of the grant date and on each anniversary thereafter.

F6: Shares withheld to cover tax liability incurred as a result of vesting of Restricted Stock Units.

F7: This Stock Option is 100% exercisable.