Live Earnings Conference Call: ClearSign Technologies will host a live Q1 2026 earnings call on May 20, 2026 at 5:00PM ET. Follow this link to get details and listen to ClearSign Technologies' Q1 2026 earnings call when it goes live. Get details. ClearSign Technologies (CLIR) Options Chain & Prices $4.64 +0.23 (+5.12%) Closing price 05/19/2026 03:46 PM EasternExtended Trading$4.51 -0.12 (-2.61%) As of 05/19/2026 05:10 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more. Add Compare Share Share Options Chain Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock CLIR Put and Call Options List 8/21/2026 Options Date Put and Call Options Put Options Call Options Options Type All In The Money Out of The Money Moneyness With Volume Without Volume All Volume Strike Price Min Strike Price Max Export ExpiresStrike PriceClose PricePut/CallVolumeVolume AskVolume BidOpen InterestImplied VolatilityDeltaTradesEnd-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies Data I/O Options Trane Technologies Options Keysight Technologies Options Teradyne Options Veralto Options Fortive Options Nova Options Revvity Options Camtek Options Sensata Technologies Options Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NASDAQ:CLIR) was last updated on 5/20/2026 by MarketBeat.com Staff. From Our PartnersTrump's gold order: the announcement they won't put on the front pageOn August 15, 1971, Nixon interrupted prime-time television and ended the gold standard in 15 minutes - no deb...Reagan Gold Group | SponsoredIran's New Leader Just Said Something That Should Terrify Every AmericanIran's Supreme Leader has declared the Strait of Hormuz closed as leverage against the U.S. - and with 40% of ...American Alternative | SponsoredHey, it's Jon Najarian. The SpaceX IPO is right around the corner. 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