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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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 *

NAPOLITANO JASON A 		2. Issuer Name and Ticker or Trading Symbol

HESKA CORP [ HSKA ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
COO, Chief Strategist and Sec.
(Last)          (First)          (Middle)

3760 ROCKY MOUNTAIN AVENUE 		3. Date of Earliest Transaction (MM/DD/YYYY)

11/15/2016
(Street)

LOVELAND, CO 80538
(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   11/15/2016     M    2668   A $17.17   41212   (1) D    
Common Stock   11/15/2016     M    6331   A $17.17   47543   (1) D    
Common Stock   11/15/2016     M    1   A $17.17   47544   (1) D    
Common Stock   11/15/2016     F    2345   (3) D $65.88   45199   (1) D    
Common Stock   11/15/2016     F    1497   (3) D $65.88   43702   (1) D    
Common Stock                  602   I   by Spouse   (2)

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
Incentive Stock Option (right to buy)   $17.17   11/15/2016     M         2668    11/17/2006   11/17/2026   Common Stock   2668   $0   0   D    
Non-Qualified Stock Option (right to buy)   $17.17   11/15/2016     M         6331    11/17/2006   11/17/2026   Common Stock   6331   $0   0   D    
Non-Qualified Stock Option (right to buy)   $17.17   11/15/2016     M         1    11/17/2006   (4) 11/17/2026   (4) Common Stock   1   $0   0   D    

Explanation of Responses:
( 1)  Includes one share jointly owned with Robert Grieve.
( 2)  Mr. Napolitano disclaims beneficial ownership of all securities of the Issuer owned by his wife.
( 3)  Mr. Napolitano offered to deliver 3,842 previously owned shares and $39.78 in cash to fulfill all exercise price and minimum statutory tax withholding obligations for stock option exercises referenced herein.
( 4)  Represents a combination of stock option exercises involving fractional shares: 0.7 shares at a price of $17.17 per share from a stock option granted on 11/17/06 exercisable on 11/17/2010 with an expiration date of 11/17/2016 and 0.3 shares at a price of $17.17 per share from a stock option granted on 11/17/06 exercisable on 11/17/2010 with an expiration date of 11/17/2016.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
NAPOLITANO JASON A
3760 ROCKY MOUNTAIN AVENUE
LOVELAND, CO 80538

COO, Chief Strategist and Sec.

Signatures
/s/ Jason A. Napolitano 11/15/2016
** 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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