equity stake in BlackBerry, made an offer to acquire BlackBerry for $4.7 billion (at $9.00 per share). Following the announcement, BlackBerry announced an acceptance of the offer provisionally but it would continue to seek other offers until November 4, 2013. On November 4, 2013, BlackBerry replaced Thorsten Heins with new interim CEO John S. Chen, the former CEO of Sybase. On November 8, the BlackBerry board rejected proposals from several technology companies for various BlackBerry assets on grounds that a break-up did not serve the interest of all stakeholders, which include employees, customers and suppliers in addition to shareholders, said the sources, who did not want to be identified as the discussions were confidential. On November 13, 2013, Chen released an open message: "We are committed to reclaiming our success." In early July 2014, the TechCrunch online publication published an article titled "BlackBerry Is One Of The Hottest Stocks Of 2014, Seriously", following a 50 percent rise in the company's stock, an increase that was greater than peer companies such as Apple and Google; however, an analysis of BlackBerry's financial results showed that neither revenue or profit margin were improved, but, instead, costs were markedly reduced. During the same period, BlackBerry also introduced the new Passport handset—consisting of a square screen with "Full HD-class" (1,440 x 1,440) resolution and marketed to professional fields such as healthcare and architecture—promoted its Messenger app and released minor updates for the BB10 mobile operating system. On December 17, 2014, the BlackBerry Classic was introduced; it is meant to be more in line with the former Bold series, incorporating navigation buttons similar to the previous BlackBerry OS devices. When it was discontinued in June 2016, it was the last BlackBerry with a keyboard that dominates the front of the phone in the classic style. In September 2015, BlackBerry officially unveiled the BlackBerry Priv, a slider, with a German made camera lens with 18 megapixels, phablet that utilizes the Android operating system with additional security and productivity-oriented features inspired by the BlackBerry operating systems. However, BlackBerry COO Marty Beard told Bloomberg that "The company's never said that we would not build another BB10 device." On July 26, 2016, the company hinted that another model with a physical keyboard was "coming shortly". The same day, BlackBerry unveiled a mid-range Android model with only an on-screen keyboard, the BlackBerry DTEK50, powered by the then latest version of Android,