(Reuters) - Plug Power Inc said it bought fuel-cell stack maker ReliOn Inc for about $4 million in an all-stock deal, as the company looks to diversify its supplier base. Plug Power shares rose 4.5 ...

It has been a tough year for Plug Power (NASDAQ: PLUG) stock. At one point, shares were down in value by nearly 20%. But in ...

Plug Power has invested heavily to capitalize on the growing hydrogen market. The company has struggled mightly to make money. It has issued a lot of new shares to fund its operations and growth.

April 2 (Reuters) - Plug Power Inc said it bought hydrogen fuel-cell stack technology provider ReliOn Inc for about $4 million in an all-stock deal. Plug Power said it expects the acquisition to add ...