Blackstone completed a $130m minority investment in HH Global, a global outsourced marketing execution provider. "We look forward to working with Robert MacMillan and the excellent management team he has assembled. The Company is one of the few truly global operators in the market, which we believe is a strong differentiator to capture the exciting growth ahead of us. We look forward to supporting HH Global’s impressive growth trajectory, both organically and through M&A," Raphael de Botton, Blackstone Managing Director.