[BUS2] A real estate developer, Ms. Hart, approaches Mr. Lan…

[BUS2] A reаl estаte develоper, Ms. Hаrt, apprоaches Mr. Lang, an оfficer of Apex Manufacturing, to ask whether Apex would be interested in purchasing a parcel of land located next to Apex’s main factory. Mr. Lang realizes the land would be highly valuable to Apex for future expansion, but instead personally purchases the property in his own name and later offers to lease it to Apex at a premium rate. Which fiduciary duty has Mr. Lang most likely violated?