A plan fiduciary and, in general, any other person who handles plan assets must be the subject of a bond which protects the plan assets against theft or other misappropriation. A domestic trust or insurance company with capital and surplus in excess of $1,000,000 and subject to Federal or state supervision need not supply a bond. Moreover, no bond may be required if the plan benefits are completely unfunded, i.e., payable only from the general assets of an employer. The face amount of the bond must not be less than 10% of the funds handled but not less than $1,000 nor, in general, more than $500,000.