| Industry Range | | Price / Earnings | N/A | |
| Book Value | 6.73 | |
| Earnings Per Share | -$2.59 | |
| Price To Sales Ratio | 48.42 | |
| Price To Book Ratio | 4.45 | |
| Price To Tangible Book Ratio | 4.45 | |
| Price/Cash Flow Ratio | N/A | |
| Price/Free Cash Flow Ratio | N/A | |
| Industry Range | | Market Capitalization | 428.7M | |
| Float (MRQ) | 90.78% | |
| Shares Outstanding (MRQ) | 48.8M | |
| Short Interest as a % of Float (MRQ) | 6.90% | |
| Shares Held By Institutions (MRQ) | 21.5M | |
| Industry Range | | Sales | $46.9M | |
| Gross Margin | 96.48% | |
| Net Profit Margin | -261.21% | |
| EBIT Margin | -267.51% | |
| EBITDA Margin | -261.15% | |
| Operating Margins | -267.51% | |
All fundamentals are Trailing Twelve Months (TTM) unless noted. Preliminary data is based on the company's 8-K
statement or press releases. MRQ = Most Recent Quarter
| Industry Range | | Current Ratio (MRQ) | 7.74 | |
| Quick Ratio (MRQ) | 7.74 | |
| Total Debt/Equity Ratio (MRQ) | 1.77 | |
| Debt/Common Equity Ratio (MRQ) | 1.77 | |
| Industry Range | | Return on Equity | -38.01% | |
| Return on Assets | -35.46% | |
| Asset Turnover | 0.14 | |
| Receivables Turnover | 5.15 | |
| Inventory Turnover | N/A | |
| Industry Range | | EPS Growth Annual | 42.31% | |
| Dividend Yield 5 Year Average | 0.00% | |
| Current Dividend Yield | 0.00% | |
| Current Payout Ratio | N/A | |
*PTGX does not pay a dividend. The average dividend yield for companies in the Biotechnology industry is 1.54%