Exhibit 99.1







Aratana Therapeutics Reports Second Quarter 2017 Financial Results



LEAWOOD, Kan., August 3, 2017 — Aratana Therapeutics, Inc. (NASDAQ: PETX), a pet therapeutics company focused on the licensing, development and commercialization of innovative therapeutics for dogs and cats, announced its second quarter 2017 financial results. For the quarter ended June 30, 2017, Aratana reported total net revenues of $5.2 million and a net loss of $10.4 million or $0.26 diluted loss per share.

“We are pleased with the continued customer adoption of Galliprant and Nocita,” stated Steven St. Peter, M.D., President and Chief Executive Officer of Aratana Therapeutics. “In addition, we continue to advance our next wave of therapeutic candidates as evidenced by several recent regulatory submissions and a positive pivotal efficacy study in cats.”



Recent Updates



Financial Results

The second quarter net loss was $10.4 million or $0.26 diluted loss per share compared to net income of $21.2 million or $0.61 diluted net income per share for the corresponding quarter ended June 30, 2016. Aratana recorded $5.2 million in net revenues for the quarter ended June 30, 2017, which primarily includes approximately $3.7 million related to GALLIPRANT product sales as finished goods under its supply arrangement with Elanco, $804 thousand in GALLIPRANT licensing and collaboration revenue, and $637

thousand in NOCITA net product sales. The second quarter of 2016 included $38.1 million in net revenues of which, $38.0 million was the result of the GALLIPRANT Collaboration Agreement.

The cost of product sales totaled $3.7 million in the second quarter of 2017 in comparison to $1.7 million for the corresponding period in 2016. The increase in the second quarter of 2017 was primarily due to GALLIPRANT supply sold to Elanco for commercial distribution, as well as cost of product sales of NOCITA. In July, pursuant to our Collaboration Agreement, Elanco provided notice of its intent to assume responsibility for manufacturing and its intent to assume the registrations of the therapeutic. Aratana believes the transfers of manufacturing and the registration in the U.S. to Elanco will be completed by December 31, 2017.

Research and development expenses totaled $3.7 million in the second quarter ended June 30, 2017 in comparison to $5.3 million for the quarter ended June 30, 2016. The decrease was primarily due to lower milestone payments as compared to 2016.

Selling, general and administrative expenses totaled $6.9 million for the second quarter ended June 30, 2017 compared to $6.1 million for the corresponding period in 2016. The increase is primarily related to the expanded commercial organization. Aratana expects selling, general and administrative expenses to remain relatively consistent through the remainder of 2017 with the corporate infrastructure substantially in place to support the commercialization of NOCITA and GALLIPRANT, as well as the anticipated commercialization of ENTYCE.

As of June 30, 2017, Aratana had approximately $80.7 million in cash, cash equivalents, restricted cash and short-term investments, which includes approximately $26.0 million in net proceeds from the sale of shares of the Company’s common stock in the second quarter of 2017. 

For the full year 2017, the Company continues to estimate operating expenses of approximately $45 million, resulting in a year-end cash balance of approximately $65 million.

The Company believes that its existing cash, cash equivalents, short-term investments and restricted cash of $80.7 million as of June 30, 2017 will allow Aratana to fund the current operating plan and debt obligations through at least 2018. The Company’s current operating plan contemplates the launch of ENTYCE by the fall of 2017, as well as continued growth of our commercially available therapeutics.



Webcast & Conference Call Details

The Company will host a live conference call on Friday, August 4, 2017 at 8:30 a.m. ET to discuss financial results from the second quarter ended June 30, 2017.

Interested participants and investors may access the audio webcast or use the conference call dial-in:

    1 (866) 364-3820 (U.S.)

    1 (855) 669-9657 (Canada)

    1 (412) 902-4210 (International)



A replay of the second quarter results teleconference will be available the same day of the event by approximately 11 a.m. ET and an audio webcast will be accessible for 90 days in the Aratana Investor Room. For a replay of the call, use the below dial-in and conference ID 10110825:

    1 (877) 344-7529 (U.S.)

    1 (855) 669-9658 (Canada)

    1 (412) 317-0088 (International)



IMPORTANT SAFETY INFORMATION

GALLIPRANT® (grapiprant tablets) is not for use in humans. For use in dogs only. Keep this and all medications out of reach of children and pets. Store out of reach of dogs and other pets in a secured location in order to prevent accidental ingestion or overdose. Do not use in dogs that have a hypersensitivity to grapiprant. If Galliprant is used long term, appropriate monitoring is recommended. Concomitant use of Galliprant with other anti-inflammatory drugs, such as COX-inhibiting NSAIDs or corticosteroids, should be avoided. Concurrent use with other anti-inflammatory drugs or protein-bound drugs has not been studied. The safe use of Galliprant has not been evaluated in dogs younger than 9 months of age and less than 8 lbs (3.6 kg), dogs used for breeding, pregnant or lactating dogs, or dogs with cardiac disease. The most common adverse reactions were vomiting, diarrhea, decreased appetite, and lethargy. Please see full product label for full prescribing information  (https://www.elanco.us/galliprant/pdf/galliprantpi.pdf).

ENTYCE® (capromorelin oral solution) is for use in dogs only. Do not use in breeding, pregnant or lactating dogs. Use with caution in dogs with hepatic dysfunction or renal insufficiency.  Adverse reactions in dogs may include diarrhea, vomiting, polydipsia, and hypersalivation. Should not be used in dogs that have a hypersensitivity to capromorelin. Please see the full Prescribing Information (http://www.aratana.com/wp-content/uploads/2016/12/ENTYCE-Pkg_Insert-8_5x11-FINAL.pdf)  for more detail.

NOCITA® (bupivacaine liposome injectable suspension) is for use in dogs only. Do not use in dogs younger than 5 months of age, dogs used for breeding, or in pregnant or lactating dogs. Do not administer by intravenous or intra-arterial injection. Adverse reactions in dogs may include discharge from incision, incisional inflammation and vomiting. Avoid concurrent use with bupivacaine HCI, lidocaine or other amide local anesthetics. Please see the full Prescribing Information (http://www.aratana.com/wp-content/uploads/2016/08/NOCITA-Prescribing-Information.pdf)  for more detail.



About Aratana Therapeutics

Aratana Therapeutics is a pet therapeutics company focused on licensing, developing and commercializing innovative therapeutics for dogs and cats. Aratana believes that it can leverage the investment in the human biopharmaceutical industry to bring therapeutics to dogs and cats in a capital and time efficient manner. The Company's pipeline includes therapeutic candidates for the potential treatment of pain, inappetence, viral diseases, allergy, cancer and other serious medical conditions. Aratana believes the development and commercialization of these therapeutics will permit veterinarians and pet owners to manage pets' medical needs safely and effectively, resulting in longer and improved quality of life for pets. For more information, please visit www.aratana.com.



Forward-Looking Statements Disclaimer

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements contained in this press release that do not relate to matters of historical fact should be considered forward-looking statements, including without limitation statements with respect to anticipated financial performance, our ability to bring innovative therapeutics to the market; steps necessary for and timing of regulatory submissions and approvals of therapeutic candidates; study, development and commercialization of therapeutics or therapeutic candidates; timing of anticipated study results; increased market recognition of and demand for our therapeutics; Elanco’s intent to assume responsibility for manufacturing and regulatory approval for GALLIPRANT under the Collaboration Agreement; our belief that if our prior approval submission is approved, the Company would be able to make ENTYCE commercially available by the fall of 2017, depending on the timing of CVM’s approval, if any, of the PAS; expectations regarding trends in cost of product sales; anticipated 2017 operating expenses and year-end cash balance; and statements regarding the Company's efforts, plans and opportunities, including, without limitation, advancing our therapeutic candidates and offering innovative therapeutics that help manage pet’s medical needs safely and effectively and that result in longer and improved quality of life for pets.

These forward-looking statements are based on management's current expectations. These statements are neither promises nor guarantees, but involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements, including, but not limited to, the following: the risk that the securities offering will not close in the timeframe we expect, or at all; the amount of net proceeds we receive from such offering and how we use them may differ from our current expectations; our history of operating losses and our expectation that we will continue to incur losses for the foreseeable future; failure to obtain sufficient capital to fund our operations; risks relating to the impairment of intangible assets, including BLONTRESS, TACTRESS, AT-007 and AT-011; risks pertaining to stockholder class action lawsuits; unstable market and economic conditions; restrictions on our financial flexibility due to the terms of our credit facility; our substantial dependence upon the commercial success of our therapeutics; development of our biologic therapeutic candidates is dependent upon relatively novel technologies and uncertain regulatory pathways, and biologics may not be commercially viable; denial or delay of regulatory approval for our existing or future therapeutic candidates; failure of our therapeutic candidates that receive regulatory approval to achieve market acceptance or achieve commercial success; product liability lawsuits that could cause us to incur substantial liabilities and limit commercialization of current and future therapeutics; failure to realize anticipated benefits of our acquisitions and difficulties associated with integrating the acquired businesses; development of pet therapeutics is a lengthy and expensive process with an uncertain outcome; competition in the pet therapeutics market, including from generic alternatives to our therapeutic candidates, and failure to compete

effectively; failure to identify, license or acquire, develop and commercialize additional therapeutic candidates; failure to attract and retain senior management and key scientific personnel; our reliance on third-party manufacturers, suppliers and partners; regulatory restrictions on the marketing of our approved therapeutics and therapeutic candidates; our small commercial sales organization, and any failure to create a sales force or collaborate with third-parties to commercialize our approved therapeutics and therapeutic candidates; difficulties in managing the growth of our company; significant costs of being a public company; risks related to the restatement of our financial statements for the year ended December 31, 2013, and the identification of a material weakness in our internal control over financial reporting; changes in distribution channels for pet therapeutics; consolidation of our veterinarian customers; limitations on our ability to use our net operating loss carryforwards; impacts of generic products; safety or efficacy concerns with respect to our therapeutic candidates; effects of system failures or security breaches; delay or termination of the development of grapiprant therapeutic candidates and commercialization of grapiprant products that may arise from termination of or failure to perform under the collaboration agreement and/or the co-promotion agreement with Elanco; failure to obtain ownership of issued patents covering our therapeutic candidates or failure to prosecute or enforce licensed patents; failure to comply with our obligations under our license agreements; effects of patent or other intellectual property lawsuits; failure to protect our intellectual property; changing patent laws and regulations; non-compliance with any legal or regulatory requirements; litigation resulting from the misuse of our confidential information; the uncertainty of the regulatory approval process and the costs associated with government regulation of our therapeutic candidates; failure to obtain regulatory approvals in foreign jurisdictions; effects of legislative or regulatory reform with respect to pet therapeutics; the volatility of the price of our common stock; our status as an emerging growth company, which could make our common stock less attractive to investors; dilution of our common stock as a result of future financings; the influence of certain significant stockholders over our business; and provisions in our charter documents and under Delaware law could delay or prevent a change in control. These and other important factors discussed under the caption "Risk Factors" in the Company's Annual Report on Form 10-K filed with the Securities and Exchange Commission, or SEC, on March 14, 2017, along with our other reports filed with the SEC could cause actual results to differ materially from those indicated by the forward-looking statements made in this press release. Any such forward-looking statements represent management's estimates as of the date of this press release. While we may elect to update such forward-looking statements at some point in the future, we disclaim any obligation to do so, even if subsequent events cause our views to change, except as required under applicable law. These forward-looking statements should not be relied upon as representing our views as of any date subsequent to the date of this press release.





Contacts

For investor inquires:

Craig Tooman

ctooman@aratana.com 

(913) 353-1026



For media inquiries:

Rachel Reiff

rreiff@aratana.com 

(913) 353-1050







ARATANA THERAPEUTICS, INC.

Consolidated Statements of Operations (Unaudited)

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ARATANA THERAPEUTICS, INC.

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