Sprint Raises Offer for Clearwire Stake Sprint Nextel raised its offer for the wireless network operator Clearwire on Tuesday, just hours before shareholders were scheduled to vote on its earlier offer. Sprint is now offering $3.40 a share for the nearly 50 percent stake in Clearwire that it does not already own, a 14 percent premium to the previous offer of $2.97 announced in December. The new bid now values the stake at $2.5 billion. Sprint said it had submitted the revised offer to the board of Clearwire, which said it would review it. Clearwire postponed its special meeting until May 30. Shares of Clearwire rose 4 percent in morning trading, to $3.39. The new offer comes after some restive Clearwire shareholders argued that the company should hold out for a higher price. The Clearwire deal would allow Sprint to expand its Long-Term Evolution network, which is based on the same data standard used by the newest generation of smartphones. Clearwire owns spectrum that is similar to that used in Japan by SoftBank, which agreed in October to a $20.1 billion transaction to gain majority control of Sprint. That could potentially give the newly strengthened Sprint more bargaining power in ordering the latest devices.