Amendment to Delisting Transaction Statement - Form SC 13E3/A

On November 21, 2024, at a special meeting of the Company's stockholders, the Company's stockholders voted to approve a proposal to adopt the Merger Agreement.

On November 22, 2024, the Company filed a Certificate of Merger with the Secretary of State of the State of Delaware, pursuant to which the Merger became effective. As a result of the Merger, the Company became a wholly-owned subsidiary of Parent.

At the effective time of the Merger (the "Effective Time"), in accordance with the terms and conditions set forth in the Merger Agreement, each share of common stock, $0.001 par value per share, of the Company (the "Company Common Stock") issued and outstanding as of immediately prior to the Effective Time (other than shares that are (i) held by the Company or its subsidiaries as treasury stock or otherwise, (ii) owned by Parent immediately prior to the Effective Time of the Merger, (iii) held by members of the Acquisition Group to be contributed to Parent immediately prior to the Effective Time in exchange for common units of Parent ("Rollover Shares"), (iv) issued to certain members of the Acquisition Group under the Company's 2021 Incentive Plan, 2014 Stock Incentive Plan and 2005 Stock Plan (in each case as amended and as in effect from time to time, the "Company Stock Plans"), which equity awards were settled, pursuant to the Merger Agreement, in shares of ARC Common Stock that such members of the Acquisition Group agreed to contribute to Parent immediately prior to the Effective Time in exchange for common units of Parent ("Rollover Equity Awards"), and (v) shares of Company Common Stock held by stockholders who properly and validly exercised their statutory rights of appraisal in respect of such shares in accordance with Section 262 of the DGCL) ("Dissenting Shares" and, together with (i)-(iv), the "Excluded Shares")) was cancelled and extinguished and automatically converted into the right to receive cash in an amount equal to $3.40 per share, payable to the holder thereof, without interest thereon (the "Merger Consideration"), and each share of Company Common Stock (other than the Excluded Shares) was automatically cancelled and extinguished without any conversion thereof or consideration paid therefor.

On November 22, 2024, the Company notified the New York Stock Exchange (the "NYSE") that the Merger had been completed. As a result, the NYSE suspended trading of Company common stock prior to the opening of trading on November 22, 2024. The Company requested that the NYSE file with the SEC a notification of removal from listing and registration on Form 25 with respect to the delisting of all Shares from the NYSE and the deregistration of such Shares under Section 12(b) of the Exchange Act. The deregistration will become effective 90 days after the filing of the Form 25 or such shorter period as may be determined by the SEC. Following the effectiveness of the Form 25 with respect to the delisting, the Company intends to file with the SEC a certification on Form 15 requesting the termination of registration of Company common stock under Section 12(g) of the Exchange Act and the suspension of reporting obligations under Sections 13 and 15(d) of the Exchange Act.