type subsidiary industry medical founded 1985 founder thomas grogan m.d. headquarters tucson arizona usa area served worldwide key people thomas grogan m.d founder ann costello president products medical equipment assay development services clinical laboratory number of employees 1 500 parent f. hoffman la roche ltd. divisions roche diagnostics website www.ventana.com ventana medical systems inc. is a global leader in tissue diagnostics . 1 the company develops manufactures and markets instrument reagent systems that automate tissue and slide staining in anatomic pathology laboratories . these products assist in the diagnosis and treatment of cancer and infectious diseases . 2 part of the roche diagnostics division ventana is a member of the roche group . 3 contents 1 company history 2 key people 3 products 4 company profile 5 external links 6 references company history edit pathologist and university of arizona professor thomas grogan m.d. founded ventana in 1985 . the company launched its first instrument reagent system in 1991 and held an initial public offering ipo in 1996 trading under the symbol vmsi on the nasdaq stock exchange . 4 in 2007 ventana acquired spring bioscience corp a developer and supplier of monoclonal antibodies . 5 that same year ventana rejected a hostile takeover bid from roche holding ag for 75 a share . 3 in february 2008 roche acquired ventana with a cash offer of 89.50 per share 3.4 billion . 3 key people edit thomas grogan m.d. founder ventana medical systems inc. ann costello president ventana medical systems inc. head roche tissue diagnostics products edit ventana manufactures products within eight areas immunohistochemistry ihc in situ hybridization ish hematoxylin and eosin h & e special stains personalized medicine digital pathology workflow image analysis company profile edit ventana medical systems inc. yahoo external links edit ventana medical systems inc. website roche website references edit ventana medical gets congressional props . inside tucson business . 2012 04 23 . retrieved 2012 10 20 . ventana medical systems inc . bloomberg . retrieved 2012 11 09 . a b c doherty dermot january 22 2008 . roche s higher offer wins ventana after seven months update11 . bloomberg . retrieved november 3 2012 . ventana medical systems . bioportfolio . retrieved 2012 11 03 . sherman debra 2007 09 05 . ventana buys spring bioscience raises outlook . reuters . retrieved 2012 11 03 . this united states manufacturing company related article is a stub . you can help wikipedia by expanding it . v t e retrieved from https en.wikipedia.org w index.php title ventana medical systems & oldid 730415816 categories companies based in tucson arizonaunited states manufacturing company stubshidden categories all stub articles navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 18 july 2016 at 22 05 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view