Bloom Energy (BE -19.13%) shares are ending the week on a very sour note. The hydrogen energy company reported fourth-quarter results last night, and the market has sent its shares toward a four-year low today. As of 1:30 p.m. ET, Bloom shares were lower on the day by 19.2%. That's partially because the company reported a nearly 23% drop in revenue compared to last year's fourth quarter. But there was another reason why the shares are hitting multiyear lows. Losing its chief financial officer Along with its ...