This company has been marked as potentially delisted and may not be actively trading. NASDAQ:MACK Merrimack Pharmaceuticals (MACK) Stock Price, News & Analysis Add Compare Share Share Stock Analysis Stock AnalysisBuy This Stock About Merrimack Pharmaceuticals Stock (NASDAQ:MACK) Get MACK alerts:Sign Up Key Stats Today's Range$15.13▼$15.1350-Day Range$14.65▼$15.1352-Week Range$11.53▼$15.89VolumeN/AAverage Volume396,929 shsMarket Capitalization$223.77 millionP/E Ratio1.09Dividend YieldN/APrice TargetN/AConsensus RatingN/A Company Overview Merrimack Pharmaceuticals, Inc. operates as a biopharmaceutical company in the United States. The company was incorporated in 1993 and is headquartered in Cambridge, Massachusetts. Read More Receive MACK Stock News and Ratings via Email Sign-up to receive the latest news and ratings for Merrimack 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. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. MACK Stock News HeadlinesYasir Al-Wakeel Appointed CEO of Vesalius Therapeutics and CEO-Partner of Flagship PioneeringSeptember 16, 2025 | tmcnet.comMerrimack Pharma Stock Price HistoryJune 4, 2025 | investing.comNvidia CEO Makes First Ever Tesla AnnouncementWhile headlines focus on Tesla’s car sales, tech analyst Jeff Brown says the real story is Tesla’s role in a $25 trillion AI revolution — one that Nvidia’s CEO himself has called a “multi-trillion-dollar future industry” — and he’s uncovered a little-known stock 168 times smaller than Nvidia that could be positioned to ride this breakthrough. | Brownstone Research (Ad)College football connection: Easton’s Hutchison posts 2 TDs in F&M victorySeptember 25, 2024 | msn.comMACK Stock Earnings: Merrimack Pharmaceuticals Reported Results for Q1 2024May 16, 2024 | investorplace.comMerrimack Pharmaceuticals Shareholders OK Dissolution PlanMay 10, 2024 | marketwatch.comMerrimack Pharmaceuticals, Inc. Announces Stockholder Approval of Plan of Dissolution And Cash Liquidating Dividend Amount of $15.10 Per Share of Common StockMay 10, 2024 | businesswire.comMerrimack Pharmaceuticals intends to declare $15.10 dividendMay 9, 2024 | msn.comSee More Headlines MACK Stock Analysis - Frequently Asked Questions How were Merrimack Pharmaceuticals' earnings last quarter? Merrimack Pharmaceuticals, Inc. (NASDAQ:MACK) issued its earnings results on Friday, May, 10th. The biopharmaceutical company reported ($0.78) earnings per share (EPS) for the quarter, beating analysts' consensus estimates of ($0.92) by $0.14. When did Merrimack Pharmaceuticals' stock split? Merrimack Pharmaceuticals's stock reverse split before market open on Wednesday, September 6th 2017.The 1-10 reverse split was announced on Thursday, August 31st 2017. The number of shares owned by shareholders was adjusted after the closing bell on Tuesday, September 5th 2017. An investor that had 100 shares of stock prior to the reverse split would have 10 shares after the split. What other stocks do shareholders of Merrimack Pharmaceuticals own? Based on aggregate information from My MarketBeat watchlists, some other companies that Merrimack Pharmaceuticals investors own include Rite Aid (RAD), Agenus (AGEN), Anavex Life Sciences (AVXL), Inovio Pharmaceuticals (INO), Gilead Sciences (GILD), Bristol Myers Squibb (BMY) and Meta Platforms (META). Company Calendar Last Earnings5/10/2019Today10/21/2025Fiscal Year End12/31/2025Get Stock AlertsIndustry, Sector and Symbol Stock ExchangeNASDAQ SectorMedical Industry Pharmaceutical preparations Sub-IndustryBiotechnology Current SymbolNASDAQ:MACK Previous SymbolNASDAQ:MACK CIK1274792 Webwww.merrimackpharma.com Phone617-720-8606Fax617-491-1386Employees426Year Founded2000Profitability EPS (Trailing Twelve Months)$13.87 Trailing P/E Ratio1.09 Forward P/E RatioN/A P/E GrowthN/ANet Income-$1.18 million Net MarginsN/A Pretax MarginN/A Return on Equity-1.93% Return on Assets-1.78% Debt Debt-to-Equity RatioN/A Current Ratio10.78 Quick Ratio10.78 Sales & Book Value Annual SalesN/A Price / SalesN/A Cash FlowN/A Price / Cash FlowN/A Book Value$1.31 per share Price / Book11.55Miscellaneous Outstanding Shares14,790,000Free Float10,267,000Market Cap$223.77 million OptionableOptionable Beta1.45 Social Links A Guide To High-Short-Interest StocksMarketBeat's analysts have just released their top five short plays for October 2025. Learn which stocks have the most short interest and how to trade them. Enter your email address to see which companies made the list.Get This Free Report This page (NASDAQ:MACK) was last updated on 10/21/2025 by MarketBeat.com Staff From Our PartnersCapital Gains Tax Strategies for SeniorsCapital gains taxes can take a bite out of your retirement income—unless you have a smart strategy. From holdi...SmartAsset | SponsoredINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | Sponsored$100 Trillion “AI Metal” Found in American Ghost TownJeff Brown recently traveled to a ghost town in the middle of an American desert… To investigate what could...Brownstone Research | SponsoredClaim Your Share of $5.39 BILLION in AI Equity ChecksThe U.S. government just took advantage of Public Law 81-774 to crack down on AI companies... In turn, enfo...Angel Publishing | Sponsored7 market signals flashing red right nowRight now, the same 7 key indicators that predicted 1929, the 1970s stagflation, and the 2008 meltdown are all...American Alternative | SponsoredFront-Run Buffett's Shocking Gold MoveA Historic Gold Announcement Is About to Rock Wall Street? For months, sharp-eyed analysts have watched the...Golden Portfolio | SponsoredBitcoin grabs headlines, but smart money likes this tokenBitcoin grabs headlines, but smart money likes this token My research team has identified the token positio...Crypto 101 Media | SponsoredMove $1,000 into this stock before Nov 6The End of Tesla? "Hold onto your Tesla stock." That's the message insiders at Tesla have been giving staff...Altimetry | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added ten stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding Merrimack Pharmaceuticals, Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share Merrimack Pharmaceuticals With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. Advanced Stock Screeners and Research Tools Use our seven stock screeners to find suitable stocks. Stay informed with MarketBeat's real-time news. Export data to Excel for personal analysis. Sign in to your free account to enjoy these benefits In-depth profiles and analysis for 20,000 public companies. Real-time analyst ratings, insider transactions, earnings data, and more. Our daily ratings and market update email newsletter. Sign in to your free account to enjoy all that MarketBeat has to offer. Sign In Create Account Your Email Address: Email Address Required Your Password: Password Required Log In or Sign in with Facebook Sign in with Google Forgot your password? Your Email Address: Please enter your email address. Please enter a valid email address Choose a Password: Please enter your password. Your password must be at least 8 characters long and contain at least 1 number, 1 letter, and 1 special character. Create My Account (Free) or Sign in with Facebook Sign in with Google By creating a free account, you agree to our terms of service. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
