NioCorp Developments Ltd. Completes Convertible Security Funding Agreement for Institutional Investment of up to US $10.5 Million CENTENNIAL, Colo. (December 15, 2015)– NioCorp Developments Ltd. (“NioCorp”or the “Company”, TSX: NB; OTCQX: NIOBF; and FSE: BR3) announces today that it has completed and signed a definitive convertible security funding agreement (the...