7.2016 PRIVATE PLACEMENT FINANCING

Beginning May 24, 2016 and through May 26, 2016, we entered into a series of substantially similar subscription agreements (each a “2016 Subscription Agreement”) with 18 accredited investors (collectively, the “2016 Investors”) providing for the issuance and sale by the Company to the 2016 Investors, in a private placement, of an aggregate of 9,418,334 Units at a purchase price of $0.36 per Unit (the “2016 Private Placement Financing”). Each Unit consisted of a share of Common Stock, and a Series E Warrant to purchase 0.75 shares of Common Stock at an exercise price of $0.4380 per share at any time prior to the fifth anniversary of the issuance date of the Series E Warrant (the “Series E Warrants” and the shares issuable upon exercise of the Series E Warrants, collectively, the “Series E Warrant Shares”). The exercise price of the Series E Warrants was set to equal the closing price of our Common Stock on the date of their issuance (May 26, 2016), which was $0.4380, and therefore the Series E Warrants were not issued at a discount to the market price of our Common Stock as of such date. The gross proceeds to Arch were approximately $3.4 million before deducting financing costs of approximately $281,000.

The number of shares of Common Stock into which each of the Series E Warrants is exercisable and the exercise price therefor are subject to adjustment as set forth in the Series E Warrants, including adjustments for stock subdivisions or combinations (by any stock split, stock dividend, recapitalization, reorganization, scheme, arrangement or otherwise). In addition, (i) at any time during the term of the Series E Warrants, we may reduce the then-current exercise price to any amount and for any period of time deemed appropriate by our Board of Directors (the “Board”); and (ii) certain of the Series E Warrants provide that they shall not be exercisable in the event and to the extent that the exercise thereof would result in the holder of the Series E Warrant, together with its affiliates and any other persons whose beneficial ownership of Common Stock would be aggregated with the holder’s, would be deemed to beneficially own more than 4.99% of the Common Stock; provided, however , the holder, upon notice to us, may increase or decrease the ownership limitation, provided that any increase is limited to a maximum of 9.99% of the Company’s Common Stock, and any increase in the ownership limitation will not become effective until the 61st day after delivery of such notice.

During the three and six months ended March 31, 2021 and 2020, no Series E Warrants had been exercised. As of March 31, 2021, up to 4,214,582 shares may be acquired upon the exercise of the Series E Warrants.

Common Stock

At May 26, 2016, the Closing Date of the 2016 Private Placement Financing, the Company issued 9,418,334 shares of Common Stock.

Equity Value of Warrants

The Company accounted for the Series E Warrants relating to the aforementioned 2016 Private Placement Financing in accordance with ASC 815‑40, Derivatives and Hedging. Because the Series E Warrants are indexed to the Company’s stock, they are classified within stockholders’ equity (deficit) in the accompanying consolidated financial statements.