Sec Form 4 Filing - Toman Diana @ COMPASS MINERALS INTERNATIONAL INC - 2016-04-01

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 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

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person Toman Diana 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) Sr. VP, General Counsel (Last) (First) (Middle) C/O COMPASS MINERALS INTERNATIONAL, INC., 9900 WEST 109TH STREET, SUITE 100 3. Date of Earliest Transaction (MM/DD/YY) 04/01/2016 (Street) OVERLAND PARK, KS66210 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 18 ( 1 ) I Company 401(k) Plan

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 11/09/2018 11/09/2018 Common Stock 1,825 1,825 D Restricted Stock Unit $ 0 04/01/2016 A( 2 ) 1,137 04/01/2019 04/01/2019 Common Stcok 1,137 $ 0 1,137 D Stock Option (Right to Buy) $ 70.48 04/01/2016 A( 3 ) 8,112 04/01/2017 04/01/2023 Common Stcok 8,112 $ 0 8,112 D Performance Stock Unit(rTSR) $ 0 04/01/2016 A( 4 ) 1,068 04/01/2019 04/01/2019 Common Stcok 1,068 $ 0 1,068 D Performance Stock Unit(ROIC) $ 0 04/01/2016 A( 5 ) 1,137 04/01/2019 04/01/2019 Common Stcok 1,137 $ 0 1,137 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Toman Diana C/O COMPASS MINERALS INTERNATIONAL, INC. 9900 WEST 109TH STREET, SUITE 100 OVERLAND PARK, KS66210 Sr. VP, General Counsel Signatures /s/ Robert B. Porter, Attorney-in-Fact 04/05/2016 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The information on this report is based on 401(k) plan statement dated 04/04/2016. ( 2 )Restricted Stock Units granted: 3 year cliff vest on 04/01/2019, 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 athree-year period beginning on April 1, 2016, and ending on March 31, 2019. 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 marketindex. 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 investedcapital("ROIC") performance goals over a three-year period beginning in 2016 and ending in 2018. Payout for vested PSUs range from 0% to 200% based on the Company's ROIC performance. The number ofshares inthis grant are subject to adjustment, up or down, based upon attainment above or below the targeted ROIC.

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.