Activist Blackwells Pushes For New Directors at IHS

An activist investor is ratcheting up the pressure on IHS IHS -5.10%decrease; red down pointing triangle

 Holding, pushing for the cell-tower operator to appoint new independent directors to its board and offer investors more transparency to boost its stock price.

Blackwells Capital, a long-term shareholder of IHS, says the board changes are necessary to reverse the company’s growing losses and its weak stock price, according to a copy of a letter reviewed by The Wall Street Journal that will be sent to the company’s directors Wednesday.