Clearwire Corp.'s (CLWR) first-quarter loss widened as the financially struggling wireless broadband provider saw its revenue slip and total subscriber rolls fall.

Majority shareholder Sprint Nextel Corp. (S) has agreed to buy the half of Clearwire it doesn't already own in a $2.2 billion deal, and Clearwire's shareholders are slated to vote on the merger May 21. Sprint has also agreed to provide up to $800 million in financing to Clearwire.

Sprint owns more than 50% of Clearwire, but needs the majority of other shareholders to back the deal.

For the latest quarter, Clearwire reported a loss of $227 million compared with a year-earlier loss of $181.8 million. On a per-share basis, the loss was 33 cents compared with 44 cents a year earlier, as the latest period had fewer shares outstanding.

Revenue fell 1.4% to $318 million.

Analysts polled by Thomson Reuters most recently projected a loss of 25 cents a share on $304 million in revenue.

The company ended the quarter with 9.4 million total subscribers, down 1.8% from 9.6 million in the prior quarter and 14% from 11 million a year earlier. The vast majority of Clearwire's subscribers are wholesale customers from Sprint. The declines in wholesale revenue and subscribers continued to stem from Sprint's discontinuation of WiMAX-based plans in the latest period.

Retail churn, or customer turnover, was 4.2% in the latest quarter, down from 5% in the previous quarter, but up from 3.7% a year earlier.

Total operating expenses fell 16%.

Class A shares closed Thursday at $3.31 and were unchanged after hours. Through the close, the stock was up 15% so far this year.

Write to Ben Fox Rubin at ben.rubin@dowjones.com

Subscribe to WSJ: http://online.wsj.com?mod=djnwires

Clearwire Corp. - Class A (MM) (NASDAQ:CLWR)
Historical Stock Chart
From Jun 2024 to Jul 2024 Click Here for more Clearwire Corp. - Class A (MM) Charts.
Clearwire Corp. - Class A (MM) (NASDAQ:CLWR)
Historical Stock Chart
From Jul 2023 to Jul 2024 Click Here for more Clearwire Corp. - Class A (MM) Charts.