The decision is part of Dish Network CEO Charlie Ergen’s sweeping change in the top ranks that the company says is designed to “align its business to more fully respond to the dynamic pay-TV environment” and become a player in wireless communications.

Erik Carlson, who was EVP of Operations, is now President — a title Ergen had held — and COO. Previous COO Bernie Han became EVP of Strategic Planning. Both will continue to report to Ergen as will EVP of Corporate Development Tom Cullen, General Counsel Stanton Dodge, and Sling TV CEO Roger Lynch.

“Erik joined us just before our first satellite launch and has consistently demonstrated remarkable leadership across his many assignments throughout our business,” Ergen says. “He has a clear vision for how Dish will deliver the best customer experience and claim share in our category.”

He also says that Han’s “unparalleled depth as an operational and financial leader will be indispensable as we advance our work on the strategic transformation of DISH, including our entry into the wireless industry.”

In addition to these changes, Paul Orban moved from Corporate Controller to Chief Accounting Officer, reporting to CFO Steve Swain.

Thr group reporting to Carlson includes Vivek Khemka, promoted to Chief Technology Officer from SVP of Product Management. Brian Neylon, previously SVP of Sales, is now EVP of Customer Acquisition and Retention.

Warren Schlichting was upped to EVP of Marketing, Programming, and Media Sales from SVP of Programming and Media Sales.

Carlson’s old job as EVP of Operations goes to John Swieringa, who was CIO.

Reporting to him will be the new CIO Rob Dravenstott, who had been VP of IT Application Development.

Dish shares are down more than 18% so far in 2015 as its satellite business has weakened, while its wireless strategy remains unclear.