John McMahon Form 4 HESKA / John McMahon ownership change

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:	3235-0287
Estimated average burden
hours per response:	0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

McMahon John

(Last) (First) (Middle)

3760 ROCKY MOUNTAIN AVENUE

(Street)

LOVELAND CO 80538

(City) (State) (Zip)

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)
VP, Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
08/30/2017

4. If Amendment, Date of 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

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	08/30/2017		M		125	A	$28.39	193	D
Common Stock	08/30/2017		M		148	A	$72.85	341	D
Common Stock	08/30/2017		M		583	A	$39.76	924	D
Common Stock	08/30/2017		M		1,752	A	$72.85	2,676	D
Common Stock	08/30/2017		S		100	D	$100.6	2,576	D
Common Stock	08/30/2017		S		100	D	$100.81	2,476	D
Common Stock	08/30/2017		S		100	D	$100.84	2,376	D
Common Stock	08/30/2017		S		100	D	$100.89	2,276	D
Common Stock	08/30/2017		S		100	D	$100.93	2,176	D
Common Stock	08/30/2017		S		300	D	$100.98	1,876	D
Common Stock	08/30/2017		S		300	D	$101.22	1,576	D
Common Stock	08/30/2017		S		300	D	$101.23	1,276	D
Common Stock	08/30/2017		S		100	D	$101.2301	1,176	D
Common Stock	08/30/2017		S		21	D	$101.24	1,155	D
Common Stock	08/30/2017		S		85	D	$101.25	1,070	D
Common Stock	08/30/2017		S		85	D	$101.26	985	D
Common Stock	08/30/2017		S		15	D	$101.27	970	D
Common Stock	08/30/2017		S		102	D	$101.28	868	D
Common Stock	08/30/2017		S		100	D	$101.29	768	D
Common Stock	08/30/2017		S		100	D	$101.3	668	D
Common Stock	08/30/2017		S		100	D	$101.43	568	D
Common Stock	08/30/2017		S		200	D	$101.45	368	D
Common Stock	08/30/2017		S		300	D	$101.39	68	D

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 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: 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)	$28.39	08/30/2017		M			125	10/14/2015	10/13/2025	Common Stock	125	$0	1,084	D
Incentive Stock Option (right to buy)	$39.76	08/30/2017		M			583	12/29/2015	12/28/2025	Common Stock	583	$0	4,084	D
Incentive Stock Option (right to buy)	$72.85	08/30/2017		M			148	12/29/2016	12/28/2026	Common Stock	148	$0	1,923	D
Non-Qualified Stock Option (right to buy)	$72.85	08/30/2017		M			1,752	12/29/2016	12/28/2026	Common Stock	1,752	$0	7,577	D

Explanation of Responses:

	By: Jason A. Napolitano For: John McMahon	08/31/2017
	** 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 Number.