This company has been marked as potentially delisted and may not be actively trading. NASDAQ:RTTR Ritter Pharmaceuticals (RTTR) Stock Price, News & Analysis Add Compare Share Share Stock Analysis Stock AnalysisCompetitorsTrendsBuy This Stock About Ritter Pharmaceuticals Stock (NASDAQ:RTTR) Get Ritter Pharmaceuticals alerts:Sign Up Key Stats Today's Range$3.60▼$3.7750-Day Range$0.45▼$4.0952-Week Range$0.15▼$1.27Volume64,428 shsAverage Volume14.23 million shsMarket Capitalization$168.00 millionP/E RatioN/ADividend YieldN/APrice TargetN/AConsensus RatingN/A Company Overview Ritter Pharmaceuticals, Inc. develops and sells novel therapeutic products that modulate the human gut microbiome to treat gastrointestinal diseases. Its lead product candidate is RP-G28, a novel microbiome modulator, which has completed Phase 2b clinical trial for the reduction of symptoms associated with lactose intolerance. The company's product, RP-G28 is designed to stimulate the growth of lactose-metabolizing bacteria in the colon, thereby adapting the gut microbiome to assist in digesting the lactose that reaches the large intestine. The company was formerly known as Ritter Natural Sciences, LLC and changed its name to Ritter Pharmaceuticals, Inc. in September 2008. Ritter Pharmaceuticals, Inc. was founded in 2004 and is headquartered in Los Angeles, California. Read More Receive RTTR Stock News and Ratings via Email Sign-up to receive the latest news and ratings for Ritter Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. Submit View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. 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Just clear steps to move from intrigued to informed about crypto.October 18 at 2:00 AM | Crypto 101 Media (Ad)Kristen RitterSeptember 15, 2023 | health.usnews.comDr. Harold K. RitterJuly 8, 2023 | health.usnews.comDenver Business Journal welcomes new tech reporterJuly 1, 2023 | bizjournals.comJason Ritter and Drew Barrymore's raw conversation on her show may matter more than you thinkApril 10, 2023 | usatoday.comRitter Pharmaceuticals Changing the Game With Lactose Intolerance TreatmentMarch 29, 2023 | thestreet.comSee More Headlines RTTR Stock Analysis - Frequently Asked Questions How were Ritter Pharmaceuticals' earnings last quarter? Ritter Pharmaceuticals Inc (NASDAQ:RTTR) posted its quarterly earnings data on Friday, May, 1st. The biotechnology company reported ($0.05) EPS for the quarter, missing analysts' consensus estimates of ($0.04) by $0.01. When did Ritter Pharmaceuticals' stock split? Ritter Pharmaceuticals's stock reverse split before market open on Friday, March 23rd 2018.The 1-10 reverse split was announced on Thursday, March 22nd 2018. The number of shares owned by shareholders was adjusted after the market closes on Thursday, March 22nd 2018. An investor that had 100 shares of stock prior to the reverse split would have 10 shares after the split. When did Ritter Pharmaceuticals IPO? Ritter Pharmaceuticals (RTTR) raised $20 million in an initial public offering on Wednesday, June 24th 2015. The company issued 4,000,000 shares at $5.00 per share. Aegis Capital Corp and Chardan Capital Markets served as the underwriters for the IPO and Barrington Research was co-manager. What other stocks do shareholders of Ritter Pharmaceuticals own? Based on aggregate information from My MarketBeat watchlists, some other companies that Ritter Pharmaceuticals investors own include Endologix (ELGX), Chipotle Mexican Grill (CMG), Aegean Marine Petroleum Network (ANW), APA (APA), Charles Schwab (SCHW), Genocea Biosciences (GNCA) and Hudson Technologies (HDSN). Company Calendar Last Earnings5/01/2020Today10/18/2025Get Stock AlertsIndustry, Sector and Symbol Stock ExchangeNASDAQ SectorMedical Industry Pharmaceutical Preparations Sub-IndustryN/A Current SymbolNASDAQ:RTTR CIK1460702 Webwww.ritterpharmaceuticals.com Phone310-203-1000FaxN/AEmployees7Year FoundedN/AProfitability EPS (Trailing Twelve Months)N/A Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet Income-$10.13 million Net MarginsN/A Pretax MarginN/A Return on EquityN/A Return on Assets-162.05% Debt Debt-to-Equity RatioN/A Current Ratio3.67 Quick Ratio3.67 Sales & Book Value Annual SalesN/A Price / SalesN/A Cash FlowN/A Price / Cash FlowN/A Book Value$0.10 per share Price / Book36.40Miscellaneous Outstanding Shares46,153,000Free FloatN/AMarket Cap$168.00 million OptionableNot Optionable Beta-0.43 (Almost) Everything You Need To Know About The EV MarketLooking to profit from the electric vehicle mega-trend? Enter your email address and we'll send you our list of which EV stocks show the most long-term potential.Get This Free Report This page (NASDAQ:RTTR) was last updated on 10/18/2025 by MarketBeat.com Staff From Our PartnersThis Crypto Is Set to Explode in JanuaryCurious about crypto but still stuck scrolling endless threads? People who get in early aren’t just lucky—they...Crypto 101 Media | SponsoredHoly ****... This could actually MAGAA new document circulating from Washington is stirring major controversy — one that some say could redefine Am...StocksToTrade | SponsoredTrump’s new nightmare beginsPorter Stansberry and Jeff Brown say a new U.S. national emergency is already underway — and it could trigger ...Porter & Company | SponsoredNvidia CEO’s Regret: ‘I Wish I Gave [Elon] More’…Earlier this year I predicted that the only reason Elon was in Washington was to push an AI-first agenda. 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