each such series of preferred stock the voting powers, designations, preferences, and special rights, qualifications, limitations, or restrictions as permitted by law, in each case without further vote of action by our stockholders. Our board of directors may also increase or decrease the number of shares of any series of preferred stock, but not below the number of shares of that series then outstanding, without any further vote or action by our stockholders. Our board of directors may authorize the issuance of preferred stock with voting or conversion rights that could adversely affect the voting power or other rights of the holders of common stock. The issuance of preferred stock, while providing flexibility in connection with possible acquisitions and other corporate purposes, could, among other things, have the effect of delaying, deferring or preventing a change in control of our company and might adversely affect the market price of our common stock and the voting and other rights of the holders of our common stock. We have no current plan to issue any shares of preferred stock.
Registration Rights
Boustead Securities, LLC
Pursuant to the warrant issued on June 26, 2017, Boustead Securities, LLC may demand registration of the shares of common stock underlying such warrant. Subject to certain exceptions, within 60 days after receipt of such a demand notice, we are obligated to file a registration statement with the Securities and Exchange Commission covering such shares of common stock and use our reasonable best efforts to have such registration statement declared effective promptly thereafter. Such demand right expires four years after the initial exercise date of the warrant. Further, unless all the shares of common stock underlying the warrant are included in an effective registration statement with a current prospectus, Boustead Securities, LLC is entitled, at any time during the five-year period beginning December 22, 2017, to include such shares as part of certain other registration statements we file, subject to exceptions.
December 2020 PIPE Financing
On December 24, 2020, we entered into a securities purchase agreement with certain institutional and accredited investors, whereby we sold shares of our common stock and warrants to purchase additional shares of our common stock.
The first closing of the financing occurred on December 29, 2020, at which we raised gross cash proceeds of $5,425,000 through the sale and issuance of 11,500,000 shares of our common stock and warrants to purchase up to an aggregate of 8,625,001 additional shares of our common stock. The second closing of the financing is subject to, and contingent upon, the effectiveness of a registration statement filed with the Securities and Exchange Commission (the “SEC”) registering the shares of our common stock sold, or issuable under the warrants, in connection with the financing and the closing of our acquisition of Envirotech Drive Systems, Inc., which transaction was completed on March 16, 2021. At the second closing, we have agreed to sell and issue an additional 38,333,334 shares of our common stock and additional warrants to purchase up to an aggregate of 19,166,670 shares of our common stock.
The securities sold in the financing have not been registered under the Securities Act of 1933, as amended (the “Securities Act”), or any state securities laws and may not be offered or sold in the United States absent registration or an applicable exemption from registration. However, in connection with the first closing of the financing, we entered into a registration rights agreement with the participating investors, pursuant to which we agreed to register, on behalf of such investors, the shares of common stock issued to such investors in the financing, including the shares of common stock underlying the warrants.
Pursuant to the registration rights agreement, on or before the date that is 20 calendar days following the earlier of (i) the date on which we file the audited financial statements of Envirotech Drive Systems, Inc. in connection with the completion of our acquisition thereof with the SEC on a Current Report on Form 8-K, and (ii) March 31, 2021, we agreed to file an initial registration statement covering the resale of all of the shares of
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