San Antonio oil executive Bill Greehey bought $15 million of stock in NuStar Energy LP this week.
Greehey, NuStar’s board chairman, now owns 8.9% of the company, having bought an additional 527,426 units — the term for shares in a limited partnership — at $28.44 each. Before the purchase, he owned about 8.4% of NuStar (NYSE: NS).
The shares were newly issued and sold to Greehey in a private placement, according to a document filed by NuStar with the U.S. Securities and Exchange Commission.…