I'm trying to value a private biopharmaceutical firm. I need to use comparable firms as part of ny valuation analysis, however i'm having a lot of trouble trying to find comparable public firms (based on size (total assets) and industry) that have a positive PE ratio or EBITDA. How do i value it if they all have negative key multiples? Is there other meaningful multiples that i can use to value the company? thanks!

Question

I'm trying to value a private biopharmaceutical firm.  I need to use comparable firms as part of ny valuation analysis, however i'm having a lot of trouble trying to find comparable public firms (based on size (total assets) and industry) that have a positive PE ratio or EBITDA.  How do i value it if they all have negative key multiples?  Is there other meaningful multiples that i can use to value the company?  thanks!