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 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Foulston Matthew J.   2. Issuer Name and Ticker or Trading Symbol COMPASS MINERALS INTERNATIONAL INC [CMP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chief Financial Officer (Last) (First) (Middle) C/O COMPASS MINERALS INTERNATIONAL, INC., 9900 WEST 109TH STREET, SUITE 100 3. Date of Earliest Transaction (Month/Day/Year) 03/10/2015 (Street) OVERLAND PARK, KS 66210 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) 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               13 (1) I Company 401(k) Plan

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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 Underlying Securities (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

Restricted Stock Unit

$ 0

03/02/2016

03/02/2016

Common Stock

3,543

3,543

D

Restricted Stock Unit

$ 0

03/10/2015

A(2)

1,636

03/10/2018

03/10/2018

Common Stock

1,636

$ 0

1,636

D

Stock Option (Right to Buy)

$ 91.75

03/10/2015

A(3)

9,940

03/10/2016

03/10/2022

Common Stock

9,940

$ 0

9,940

D

Performance Stock Unit(rTSR)

$ 0

03/10/2015

A(4)

1,350

03/10/2018

03/10/2018

Common Stock

1,350

$ 0

1,350

D

Performance Stock Unit(ROIC)

$ 0

03/10/2015

A(5)

1,636

03/10/2018

03/10/2018

Common Stock

1,636

$ 0

1,636

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Foulston Matthew J. C/O COMPASS MINERALS INTERNATIONAL, INC. 9900 WEST 109TH STREET, SUITE 100 OVERLAND PARK, KS 66210			Chief Financial Officer

Signatures

/s/ Robert E. Marsh, Attorney in Fact		03/12/2015
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	The information in this report is based on a 401(k) plan statement dated as of 03-09-15.
(2)	Restricted Stock Units granted: 3 year cliff vest on 3-10-2018, provided performance threshold satisfied.
(3)	Stock options granted: vesting 25% after year one and then 25% per year thereafter.
(4)	On the third anniversary of the grant date, these PSUs cliff vest and shares of Company common stock are granted based on achievement of relative total shareholder return ("rTSR") performance goals over a three-year period beginning in 2015 and ending in 2017. Payout for vested PSUs range from 0% to 150% based on the Company's rTSR percentile compared to the rTSR of the companies comprising a market index. The number of shares in this grant are subject to adjustment, up or down, based upon attainment above or below the targeted percentile rank.
(5)	On the third anniversary of the grant date, these PSUs cliff vest and shares of Company common stock are granted based on an average of three annual calculations of achievement of return on invested capital ("ROIC") performance goals over a three-year period beginning in 2015 and ending in 2017. Payout for vested PSUs range from 0% to 200% based on the Company's ROIC performance. The number of shares in this grant are subject to adjustment, up or down, based upon attainment above or below the targeted ROIC.

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