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30 HARTFORDBUSINESS.COM | JUNE 29, 2026 The Lists LIFE SCIENCES & BIOTECHNOLOGY COMPANIES IN CONNECTICUT Ranked by number of Conn.-based employees Life sciences & biotechnology companies in Connecticut Ranked by number of Conn.-based employees Company Conn.-based employees/ companywide Headquarters/ focus Ownership type/ ticker symbol Head of company/ year founded 1 Medtronic Inc. 60 Middletown Ave., North Haven 06473 203-492-5000 • medtronic.com 3,000 (1) 95,000 Galway, Ireland Healthcare technology with treatments for 70 health conditions, cardiac devices, surgical robotics, insulin pumps, surgical tools, patient monitoring systems Public NYSE:MDT Geoffrey S. Martha CEO 1949 2 Pfizer Inc. (2) 445 Eastern Point Road, Groton 06340 860-441-4100 • pfizer.com 2,200 77,000 New York, N.Y. Pharmaceutical research, development and manufacturing Public NYSE:PFE Albert Bourla CEO 1849 3 Boehringer Ingelheim Pharmaceuticals Inc. 900 Ridgebury Road, Ridgefield 06877 203-798-9988 • boehringer-ingelheim.us 2,000 8,500 Ridgefield Development and manufacturing of human healthcare products, especially in areas of unmet medical need Private Brian Hilberdink President, U.S. Human Pharma Jean-Michel Boers President, CEO & managing director, Boehringer Ingelheim USA 1885 4 Alexion, AstraZeneca Rare Disease 100 College St., New Haven 06510 475-230-2596 • alexion.com 775 96,000 Boston, Mass. Development & delivery of life-changing medicines for rare diseases Public NASDAQ:AZN Marc Dunoyer CEO 1992 5 CooperSurgical Inc. (3) 75 Corporate Drive, Trumbull 06611 203-601-5200 • coopersurgical.com 609 (4) 3,328 (4) Trumbull Development and commercialization of medical devices and diagnostics for women's health Public NASDAQ:COO (5) Holly Sheffield President 1990 6 Becton, Dickinson and Co. 14 Grace Way, Canaan 06018 860-824-5487 • bd.com 550 60,000 Franklin Lakes, N.J. Syringe manufacturing Public NYSE:BDX Thomas E. Polen Jr. President & CEO 1897 7 The Jackson Laboratory for Genomic Medicine 10 Discovery Drive, Farmington 06032 860-837-2474 • jax.org 439 (6) 3,000 Bar Harbor, Maine Discovery of genomic causes of disease and development of diagnostics and therapeutics Non-profit Lon Cardon President & CEO Mark Adams Interim scientific director 2014 (7) 8 Avna Inc. 200 Ellis St., New Britain 06051 860-225-8707 • avna.com 340 450 New Britain Medical devices, surgical components & sub- assemblies for mechanical, precision-powered & robotic applications Private Jason M. Howey CEO Aaron Mambrino President & CFO 1911 9 Paragon Medical (8) 1146 Barnum Ave., Bridgeport 06610 203-336-0121 • paragonmedical.com 300 2,500 Pierceton, Ind. Medical device manufacturing and components for robotic assisted surgery, endoscopy, minimally invasive surgery, drug delivery, cosmetic surgery Public NYSE:AME Matt Williams Vice president of operations 1991 10 MannKind Corp. 1 Casper St., Danbury 06810 203-798-8000 • mannkindcorp.com 270 600 Danbury Development and commercialization of solutions in cardiometabolic and orphan lung diseases Public NASDAQ:MNKD Michael Castagna CEO 1991 11 TOMZ Corp. 47 Episcopal Road, Berlin 06037 860-829-0670 • tomz.com 250 (4) 250 (4) Berlin Medical device manufacturing Private Tom Matulaniec CEO 1988 12 Sheffield Pharmaceuticals 170 Broad St., New London 06320 800-222-1087 • sheffieldpharma.com 165 (9) N/A New London Manufacturing & distribution of prescription, healthcare and beauty products Private Jeffrey Davis President & CEO 1850 13 Knoa Pharma LLC (10) 201 Tresser Blvd., Stamford 06901 203-588-8000 • knoapharma.com 150 430 Stamford Pharmaceuticals Private Norbert Riedel Chair, Knoa Pharma Board of Directors Paul Rothman Chair, Knoa Foundation Board of Trustees 2026 14 Young Pharmaceuticals Inc. 105 Progress Drive, Wethersfield 06109 860-529-7919 • youngpharm.com 140 320 Wethersfield Skincare and aesthetic technologies Private John Kulesza CEO 1977 15 Arthur G. Russell 750 Clark Ave., Bristol 06010 860-583-4109 • arthurgrussell.com 107 (4) 127 (4) Bristol Medical device assembly Private Jason Ensminger President 1945 16 Yale Ventures 101 College St., New Haven 06510 203-436-8096 • ventures.yale.edu 60 60 New Haven Protect & license intellectual property developed at Yale, with oversight of accelerators, innovation centers and industry mentors Private Josh Geballe Managing director 2022 17 Bexorg Inc. 55 Church St., Suite 800, New Haven 06510 203-414-3517 • bexorg.com 50 50 New Haven Central nervous system (CNS) drug discovery and development using integrated whole-human brain wet-lab and AI platform Private Zvonimir Vrselja CEO & co-founder 2021 18 Quantum-Si Inc. 29 Business Park Drive, Branford 06405 866-688-7374 • quantum-si.com 46 (11) 145 Branford Life sciences and protein sequencing Public NASDAQ:QSI Jeff Hawkins CEO 2013 19 Trevi Therapeutics Inc. 195 Church St., New Haven 06510 203-304-2499 • trevitherapeutics.com 45 45 New Haven Clinical-stage biopharmaceuticals Public NASDAQ:TRVI Jennifer L. Good Co-founder, president & CEO 2011 20 Celldex Therapeutics Inc. 545 Long Wharf Drive, New Haven 06511 203-483-3500 • celldex.com 42 (4) 198 Hampton, N.J. Immunotherapy, therapeutic antibodies, antibody drug conjugates, immune system modulators Public NASDAQ:CLDX Anthony Marucci President & CEO 2005 21 KUBTEC 111 Research Drive, Stratford 06615 203-364-8544 • kubtec.com 41 76 Stratford (12) Medical imaging equipment and gamma probe detection system manufacturing Private Vikram Butani CEO 2005 Source: Each company via survey as of Q2 2026, websites, press releases, annual 10-K reports and Labor Market Information database, Conn. Dept. of Labor. Note: N/A = Not available. Unable to confirm data by press time for New Haven's Arvinas Inc., which reported 253 Conn.-based employees on its 2024 survey; the company laid off 92 Conn.-based employees in May 2025. PerkinElmer U.S. LLC plans to permanently close its Shelton manufacturing facility in 2026, according to a notice filed with the state Department of Labor. Layoffs began in November 2025. Stamford's Purdue Pharma was dissolved in May 2026. Plainville's Innovative Medical Products Inc. and Stamford's GeneDx, formerly Sema4 Holdings Corp., no longer disclose employee counts. In May 2026, Bristol-based IDEX Health & Science LLC announced plans to close by Q3 2026, laying off 73 employees. (1) According to Industry Select. (2) Additional clinical research site in New Haven. (3) A wholly owned subsidiary of The Cooper Cos. with an additional location in Guilford. (4) From HBJ's 2025 survey. (5) For parent company, The Cooper Cos. (6) 259 on-site employees, including 98 research faculty. (7) Year founded for the Farmington site; The Jackson Laboratory was founded in 1929. (8) Additional location at 75 Aircraft Road in Southington. (9) From Q4 2025. (10) Took over operations of Purdue Pharma on May 1, 2026. (11) Estimate based on public filings and HBJ's 2024 survey. (12) Moving headquarters to 75 Merritt Blvd. in Trumbull. -Compiled by Stephanie R. Meagher, research@nebusinessmedia.com