SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

AYRES JOHN C

(Last)

(First)

(Middle)

C/O ARATANA THERAPEUTICS, INC.

11400 TOMAHAWK CREEK PARKWAY, SUITE 340

(Street)

LEAWOOD

66211

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
01/04/2019

3. Issuer Name and Ticker or Trading Symbol
ARATANA THERAPEUTICS, INC. [ PETX ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	SEE REMARKS

5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	98,091	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Stock Option (Right to Buy)	⁽¹⁾	11/12/2023	Common Stock	66,667	$20.4	D
Stock Option (Right to Buy)	⁽²⁾	01/12/2024	Common Stock	20,000	$18.42	D
Stock Option (Right to Buy)	⁽³⁾	01/28/2025	Common Stock	25,000	$17.18	D
Stock Option (Right to Buy)	⁽⁴⁾	01/21/2026	Common Stock	70,000	$3.14	D
Stock Option (Right to Buy)	⁽⁵⁾	01/12/2027	Common Stock	37,500	$8.02	D
Stock Option (Right to Buy)	⁽⁶⁾	01/24/2028	Common Stock	60,000	$4.83	D

Explanation of Responses:

1. Fully vested as of November 13, 2017.

2. Fully vested as of January 13, 2018.

3. Vested as to 25% of the total number of shares (rounded down to the nearest whole share) on January 29, 2016 and vested or will vest, as applicable, as to an additional 1/48th of the total number of shares (rounded down to the nearest whole share) on the same day of each of the 36 successive calendar months thereafter, such that the stock option shall be vested as to all shares on January 29, 2019, subject to continued service with the Issuer through the applicable vesting dates.

4. Vested as to 25% of the total number of shares (rounded down to the nearest whole share) on January 29, 2017 and vested or will vest, as applicable, as to an additional 1/48th of the total number of shares (rounded down to the nearest whole share) on the same day of each of the 36 successive calendar months thereafter, such that the stock option shall be vested as to all shares on January 29, 2020, subject to continued service with the Issuer through the applicable vesting dates.

5. Vested as to 25% of the total number of shares (rounded down to the nearest whole share) on January 29, 2018 and vested or will vest, as applicable, as to an additional 1/48th of the total number of shares (rounded down to the nearest whole share) on the same day of each of the 36 successive calendar months thereafter, such that the stock option shall be vested as to all shares on January 29, 2021, subject to continued service with the Issuer through the applicable vesting dates.

6. Vests as to 25% of the total number of shares (rounded down to the nearest whole share) on January 29, 2019 and as to an additional 1/48th of the total number of shares (rounded down to the nearest whole share) on the same day of each of the 36 successive calendar months thereafter, such that the stock option shall be vested as to all shares on January 29, 2022, subject to continued service with the Issuer through the applicable vesting dates.

Remarks:

The Reporting Person is VP - Corporate Operations, General Counsel and Secretary.

	/s/ John C. Ayres	01/09/2019
	** 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 5 (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.