(a) Transactions between plan and party in interest
(1)
(2) No fiduciary who has authority or discretion to control or manage the assets of a plan shall permit the plan to hold any employer security or employer real property if he knows or should know that holding such security or real property violates section 1107(a) of this title.
(b) Transactions between plan and fiduciary
(1) deal with the assets of the plan in his own interest or for his own account,
(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
(3) receive any consideration for his own personal account from any party dealing with such plan in connection with a transaction involving the assets of the plan.
(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.