Transaction Details

Footnotes

The price reflects a weighted average purchase price for multiple transactions ranging from 8.7600 to 9.0450 per share, inclusive. The reporting person undertakes to provide upon request by the SEC staff, the issuer, or a stockholder of the issuer, full information regarding the number of shares purchased at each separate price. | Julie Durr is the trustee of the Julie J. Durr Revocable Trust. | Angela Janssen is the trustee of the Angela K. Janssen Revocable Trust. | Mrs. Janssen's husband owns these shares. | Mrs. Durr, Mrs. Janssen, and Mrs. Gerdin are among the co-trustees of the Ann S. Gerdin Revocable Trust. | Mrs. Durr and Mrs. Janssen are among the co-trustees of the 2009 Gerdin Heartland Trust. As co-trustees, Mrs. Durr and Mrs. Janssen disclaim beneficial ownership with respect to this trust. | Mrs. Janssen is the trustee of trusts created for the benefit of her children. | Mrs. Durr is the trustee of trusts created for the benefit of her children. | Mrs. Durr and Mrs. Janssen are among the co-trustees of the 2007 Gerdin Heartland Trust. As co-trustees, Mrs. Durr and Mrs. Janssen disclaim beneficial ownership with respect to this trust. | The Ann S. Gerdin Revocable Trust, Mrs. Durr, and Mrs. Janssen are among the co-general partners of Gerdin Family Investments LP. Beneficial ownership is disclaimed except to the extent of each such reporting person's percentage ownership of general and limited partner shares in the partnership.