Richard Kinder, the billionaire founder and Executive Chairman of Kinder Morgan (KMI), recently bought 300,000 shares. At a cost of just over $6 million, the buy only increases his stake by about 0.1 percent.

Insider data for the company as a whole shows major regular buys from Kinder, but more mixed results from other executives, including a few sales in the past year. On total share count, however, insiders are buyers far more than sellers.

Kinder Morgan is an energy infrastructure company with a focus on pipelines that transport oil and natural gas. Shares have beaten the S&P 500 Index by 5 points in the past year, and the company has returned to profitability after the slump in  energy prices led to a cut dividend.