(a) Transactions between plan and party in interestExcept as provided in section 1108 of this title:
(1) A fiduciary with respect to a plan shall not cause the plan to engage in a transaction, if he knows or should know that such transaction constitutes a direct or indirect—
(E)
acquisition, on behalf of the plan, of any employer security or employer real property in violation of section 1107(a) of this title.
(b) Transactions between plan and fiduciaryA fiduciary with respect to a plan shall not—
(2)
in his individual or in any other capacity act in any transaction involving the plan on behalf of a party (or represent a party) whose interests are adverse to the interests of the plan or the interests of its participants or beneficiaries, or
(c) Transfer of real or personal property to plan by party in interest
A transfer of real or personal property by a party in interest to a plan shall be treated as a sale or exchange if the property is subject to a mortgage or similar lien which the plan assumes or if it is subject to a mortgage or similar lien which a party-in-interest placed on the property within the 10-year period ending on the date of the transfer.