Transaction Details

Footnotes

The price reflects a weighted average purchase price for multiple transactions ranging from 7.7400 to 7.9200 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. | Mr. Gerdin is the trustee of the Michael J. Gerdin Revocable Trust. | Mr. Gerdin is the trustee of GRATs established by Ann S. Gerdin for her benefit. | Mr. Gerdin is a co-trustee of the Ann S. Gerdin Revocable Trust. | Mr. Gerdin's spouse is the trustee of the Michael J. Gerdin Family Trust. | Mr. Gerdin is a co-trustee of the 2009 Gerdin Heartland Trust. As a co-trustee, Mr. Gerdin disclaims beneficial ownership with respect to this trust. | Mr. Gerdin is the trustee of trusts created for the benefit of his children. | Mr. Gerdin is a co-trustee of the 2007 Gerdin Heartland Trust. As a co-trustee, Mr. Gerdin disclaims beneficial ownership with respect to this trust. | Mr. Gerdin is a co-general partner of Gerdin Family Investments LP. Beneficial ownership is disclaimed except to the extent of Mr. Gerdin's percentage ownership of general and limited partner shares in the partnership.