Health food supplier NatureBox has now raised $28m in funding, and has secured Softbank as an investor.

SoftBank Capital, the corporate venturing unit of Japan-based telecommunications company Softbank, has participated in an $18m series B funding round for US-based health food snack company NatureBox.

Softbank joined Canaan Partners, the lead investor, and existing investor General Catalyst Partners in the round. This is the second time Softbank has invested in NatureBox, having participated in an $8.5m funding round in 2013.

NatureBox has managed to raise $28.5m since 2012, and Redpoint Ventures and Plug & Play Ventures are also…