PETX Broadfin Capital acquires a 10.6% position in PETX in 13G filing http://secfilings.nasdaq.com/filingFrameset.asp?FilingID=12059608&RcvdDate=5/11/2017&CoName=ARATANA%20THERAPEUTICS%2C%20INC.&FormType=SC%2013G/A&View=html