#1 Pursuant to the Agreement and Plan of Merger, dated as of September 9, 2023 (as may be amended from time to time, the "Merger Agreement") by and among the Issuer, Aretec Group, Inc., a Delaware corporation ("Parent"), and C2023 Sub Corp., a Delaware corporation and a wholly-owned subsidiary of Parent ("Acquisition Sub"), effective November 27, 2023, among other things, Acquisition Sub merged with and into the Issuer (the "Merger"), with the Issuer surviving as a wholly-owned subsidiary of Parent.

#2 Pursuant to the terms of the Merger Agreement, at the effective time of the Merger (the "Effective Time"), these shares of the Issuer's common stock ("Common Stock") and restricted stock units of the Issuer that vest solely on the basis of time ("RSUs") were automatically canceled and converted into the right to receive an amount in cash, without interest, equal to the product of (i) the reported number of shares multiplied by (ii) $26.00 (less any required tax withholdings).

#3 On January 3, 2023, the reporting person was granted 8,477 performance-based restricted stock units ("PSUs"), which were eligible to vest from 0% to 200% at the end of a three-year performance period based on the Issuer's satisfaction of certain performance criteria. Pursuant to the terms of the Merger Agreement, these PSUs vested prior to the Effective Time at 109% of the target level of performance based on the Company's EBITDA and relative total shareholder return measured over the applicable performance period, as adjusted for the Merger.

#4 Pursuant to the terms of the Merger Agreement, at the Effective Time, these PSUs were automatically canceled and converted into the right to receive an amount in cash, without interest, equal to the product of (i) the number of shares of Common Stock underlying such PSU multiplied by (ii) $26.00 (less any required tax withholdings).