Is Oblong, Inc. overvalued or undervalued?

As of 12 November 2018, Oblong, Inc. has moved from an attractive to a risky valuation grade. The company is currently overvalued, given its significant losses reflected in a P/E ratio of NA and a negative EV to Sales ratio of -0.09. Notably, the Price to Book Value stands at 1.23, while the EV to EBITDA and EV to EBIT are both extremely low at 0.06, indicating a concerning financial position.
In comparison to its peers, Oblong, Inc. exhibits a P/E ratio of -1.3477, which is worse than Allot Ltd. at -94.7145 and Silicom Ltd. at -8.5116. The stark contrast in performance is further highlighted by the fact that SuperCom Ltd., classified as very attractive, has a P/E ratio of 7.0511. Additionally, Oblong's stock has underperformed significantly against the S&P 500, with a one-year return of -51.24% compared to the index's 10.26%, reinforcing the notion of its overvaluation.