As male-dominated industries go, oil and gas production has to be near the top. That hasn't stopped Jennifer Grigsby from becoming a veteran in the sector and putting her mark on important finance functions at Oklahoma City-based Chesapeake Energy Corp.

As treasurer since 2007 at Chesapeake, which had $9.37 billion in 2010 revenue, Grigsby, who is also senior vice president and corporate secretary, has responsibilities that include overseeing cash and risk management, debt compliance and corporate compliance initiatives.

Like many of her finance peers at energy companies, much of Grigsby's time is spent monitoring swings in oil and gas prices and looking for opportunities to hedge the company's future oil and gas production. “We have a very active hedging program,” she says. “When we see an opportunity to layer on futures, we lock it in.”