On this page we presented the PHAT PE Ratio History information for Phathom Pharmaceuticals' stock. The average PHAT PE ratio history based on using the annualized quarterly earnings result at each measurement period (for the "E" in the PE calculation; and the closing price on earnings date as the "P") is NA. Meanwhile, using the trailing twelve month (TTM) quarterly earnings result as our method of calculation the "E" value at each measurement period, the average PHAT PE ratio history based on this TTM earnings result method is NA. Note: any PE calculations involving negative earnings were discarded as not meaningful.

Let's now compare this PHAT PE ratio history result, against the recent PE: when this page was posted on 5/15/2026, the most recent closing price for PHAT had been 11.87, and the most recent quarterly earnings result, annualized, was NA. Meanwhile, the most recent TTM earnings summed to NA.

For self directed investors doing their due diligence on PHAT or any other given stock, valuation analysis for PHAT can greatly benefit from studying the past earnings and resulting PE ratio history calculations. This type of study can help inform an analysis as to whether the earnings trajectory over time and current versus historical average PE ratios justify the current stock market value.

That's why we bring you HistoricalPERatio.com to make it easy for investors to investigate Phathom Pharmaceuticals PE ratio history — or the PE history for any stock in our coverage universe. And in your continued research we hope you will be sure to check out the further links included for next earnings dates and also historical earnings surprises history for PHAT. Thanks for visiting, and the next time you need to research PHAT PE Ratio History or the PE ratio history for another stock, we hope our site will come to mind as your go-to PE ratio history research resource of choice.