A personal representative shall execute and file a bond with the registrar unless

1. (1) the estate is testate and the will expressly waives surety bond as to the person qualifying as personal representative;
2. (2) the devisees or the heirs file written waiver of surety bond;
3. (3) the personal representative is a qualified corporate fiduciary; or
4. (4) the personal representative, pursuant to statute, has deposited cash or collateral with an agency of the state to secure performance of the personal representative's duties.