BTIG analyst Joel Fishbein thinks an eventual sale is likely for Imperva after Reuters reported Friday that the company is interviewing investment banks for help in exploring strategic options. The analyst expects a minimum price range of $55-65 per share, representing 23%-45% upside from current levels. Shares of Imperva are up 9%, or $4.24, to $49.00 in pre-market trading. Several strategic acquirers could be interested in Imperva and would benefit from the company's "strong product portfolio and leadership position in the space," Fishbein tells investors in a research note. Imperva provides cyber-security solutions.