FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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OMB Number: 3235-0287
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Davis Gary N. 		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)
Sr VP - Phosphate Operations
(Last)          (First)          (Middle)

ATRIA CORPORATE CENTER, SUITE E490, 3033 CAMPUS DRIVE 		3. Date of Earliest Transaction (MM/DD/YYYY)

3/5/2015
(Street)

PLYMOUTH, MN 55441
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
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. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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                  27047   D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 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 of Derivative Security: 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
Stock Option (Right to Buy)   $127.21                      (1) 7/31/2018   Common Stock   2195.0     2195   D    
Stock Option (Right to Buy)   $52.72                      (1) 7/27/2019   Common Stock   4507.0     4507   D    
Stock Option (Right to Buy)   $44.93                      (1) 7/27/2020   Common Stock   10130.0     10130   D    
Stock Option (Right to Buy)   $70.62                      (1) 7/21/2021   Common Stock   6460.0     6460   D    
Restricted Stock Units   $0.0   (2)                  7/19/2015     (3) Common Stock   4050.0     4050   D    
Stock Option (Right to Buy)   $57.62                      (4) 7/19/2022   Common Stock   10198.0     10198   D    
Restricted Stock Units   $0.0   (2)                  7/18/2016     (3) Common Stock   4319.0     4319   D    
Stock Option (Right to Buy)   $54.03                      (5) 7/18/2023   Common Stock   11048.0     11048   D    
Restricted Stock Units   $0.0   (2)                  3/7/2017     (3) Common Stock   4692.0     4692   D    
Stock Option (Right to Buy)   $49.73                      (6) 3/7/2024   Common Stock   12418.0     12418   D    
Stock Option (Right to Buy)   $50.43   3/5/2015     A      14923         (7) 3/5/2025   Common Stock   14923.0   $0   14923   D    

Explanation of Responses:
( 1)  This Stock Option is 100% exercisable.
( 2)  One-for-One
( 3)  Not Applicable
( 4)  Grant Date 07/19/2012; option becomes exercisable in three equal installments commencing on the first anniversary of the grant date and on each anniversary thereafter.
( 5)  Grant Date 07/18/2013; option becomes exercisable in three equal installments commencing on the first anniversary of the grant date and on each anniversary thereafter.
( 6)  Grant Date 03/07/2014; option becomes exercisable in three equal installments commencing on the first anniversary of the grant date and on each anniversary thereafter.
( 7)  Grant Date 03/05/2015; option becomes exercisable in three equal installments commencing on the first anniversary of the grant date and on each anniversary thereafter.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Davis Gary N.
ATRIA CORPORATE CENTER, SUITE E490
3033 CAMPUS DRIVE
PLYMOUTH, MN 55441

Sr VP - Phosphate Operations

Signatures
/s/Mark J. Isaacson, Attorney-in-Fact for Gary N. Davis 3/9/2015
** 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 control number.
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