Description of Registered Securities

Exhibit 4.5

DESCRIPTION OF SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE

SECURITIES EXCHANGE ACT OF 1934

AS OF DECEMBER 31, 2021

As of December 31, 2021, we had two classes of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended, our Class A Common Stock and our public warrants. The following is a summary of the material terms of these securities is not intended to be a complete summary of the rights and preferences of such securities, and is qualified by reference to our second amended and restated certificate of incorporation (the “Charter”), the second amended and restated bylaws (the “Bylaws”) and the warrant-related documents described herein, which are exhibits to the Annual Report on Form 10-K of which this exhibit is a part. We urge to you read each of the Charter, the Bylaws and the warrant-related documents described herein in their entirety for a complete description of the rights and preferences of our securities.

Common Stock

The Certificate of Incorporation authorizes the issuance of 410,000,000 shares of capital stock, par value of $0.0001 per share, consisting of (a) 400,000,000 shares of Class A Common Stock and (b) 10,000,000 shares of preferred stock.

Class A Common Stock

Voting Power

Except as otherwise required by law, the Charter or as otherwise provided in any certificate of designation for any series of preferred stock, the holders of Class A Common Stock possess all voting power for the election of directors and all other matters requiring stockholder action. Holders of Class A Common Stock are entitled to one vote per share on matters to be voted on by stockholders.

Director Elections

Under the Charter, our Board of Directors (the “Board”) is divided into three classes, each of which generally serves for a term of three years with only one class of directors being elected in each year. There is no cumulative voting with respect to the election of directors, with the result that the holders of more than 50% of the shares voted for the election of directors can elect all of the directors.

Dividend Rights

Subject to applicable law and the rights, if any, of holders of outstanding preferred stock, holders of Class A Common Stock are entitled to receive such dividends and other distributions (payable in cash, property or capital stock) when, as and if declared thereon by the Board from time to time out of any assets or funds legally available therefor, and will share equally on a per share basis in such dividends and distributions.

Liquidation, Dissolution and Winding Up

Subject to applicable law and the rights, if any, of holders of outstanding preferred stock, in the event of voluntary or involuntary liquidation, dissolution or winding-up, after payment or provision for payment of the debts and other liabilities of Hyzon, the holders of Class A Common Stock will be entitled to receive all the remaining assets of Hyzon available for distribution to its stockholders, ratably in proportion to the number of shares of Class A Common Stock held by them.

Preferred Stock

The Charter provides that shares of preferred stock may be issued from time to time in one or more series. The Board is authorized to fix the voting rights, if any, designations, powers, preferences and relative, participating, optional, special and other rights, if any, of each such series and any qualifications, limitations and restrictions thereof, applicable to the shares of each series.

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The Board is able to, without stockholder approval, issue preferred stock with voting and other rights that could adversely affect the voting power and other rights of the holders of the Class A Common Stock and could have antitakeover effects. The ability of the Board to issue preferred stock without stockholder approval could have the effect of delaying, deferring or preventing a change of control of Hyzon or the removal of Hyzon’s management. Hyzon has no Preferred Stock outstanding as of the date hereof.

Warrants

Public Stockholders’ Warrants

Each whole warrant entitles the registered holder to purchase one whole share of our Class A Common Stock at a price of $11.50 per share, subject to adjustment as discussed below, Pursuant to the Warrant Agreement (as defined below), a warrant holder may exercise its warrants only for a whole number of shares of Class A Common Stock. This means that only a whole warrant may be exercised at any given time by a warrant holder. The warrants will expire on July 16, 2026, at 5:00 p.m., New York City time, or earlier upon redemption or liquidation.

We will not be obligated to deliver any shares of Class A Common Stock pursuant to the exercise of a warrant and will have no obligation to settle such warrant exercise unless a registration statement under the Securities Act of 1933, as amended (the “Securities Act”) with respect to the shares of Class A Common Stock underlying the warrants is then effective and a prospectus relating thereto is current, subject to our satisfying our obligations described below with respect to registration. No warrant will be exercisable and we will not be obligated to issue shares of Class A Common Stock upon exercise of a warrant unless the Class A Common Stock issuable upon such warrant exercise has been registered, qualified or deemed to be exempt under the securities laws of the state of residence of the registered holder of the warrants. In the event that the conditions in the two immediately preceding sentences are not satisfied with respect to a warrant, the holder of such warrant will not be entitled to exercise such warrant and such warrant may have no value and expire worthless. In no event will we be required to net cash settle any warrant. In the event that a registration statement is not effective for the exercised warrants, the purchaser of a unit containing such warrant will have paid the full purchase price for the unit solely for the share of Class A Common Stock underlying such unit.

We have agreed to use our best efforts to maintain the effectiveness of a registration statement for the registration, under the Securities Act, of the shares of Class A Common Stock issuable upon exercise of the warrants and a current prospectus relating thereto, until the expiration of the warrants in accordance with the provisions of the Warrant Agreement.

Notwithstanding the above, if our Class A Common Stock is at the time of any exercise of a warrant not listed on a national securities exchange such that it satisfies the definition of a “covered security” under Section 18(b)(1) of the Securities Act, we may, at our option, require holders of public warrants who exercise their warrants to do so on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act and, in the event we so elect, we will not be required to file or maintain in effect a registration statement, but we will be required to use our best efforts to register or qualify the shares under applicable blue sky laws to the extent an exemption is not available.

Redemption of Warrants for Cash When the Price Per Share of Class A Common Stock Equals or Exceeds $18.00

Once the warrants become exercisable, we may call the warrants for redemption (except as described below with respect to the private placement warrants):

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We will not redeem the warrants for cash unless a registration statement under the Securities Act covering the shares of Class A Common Stock issuable upon exercise of the warrants is effective and a current prospectus relating to those shares of Class A Common Stock is available throughout the 30-day redemption period. Any such exercise would not be on a “cashless” basis and would require the exercising warrant holder to pay the exercise price for each warrant being exercised. If and when the warrants become redeemable by us, we may exercise our redemption right even if we are unable to register or qualify the underlying securities for sale under all applicable state securities laws.

We have established the last of the redemption criterion discussed above to prevent a redemption call unless there is at the time of the call a significant premium to the warrant exercise price. If the foregoing conditions are satisfied and we issue a notice of redemption of the warrants, each warrant holder will be entitled to exercise his, her or its warrant prior to the scheduled redemption date. However, the price of the Class A Common Stock may fall below the $18.00 redemption trigger price (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) as well as the $11.50 (for whole shares) warrant exercise price after the redemption notice is issued.

Redemption of Warrants for Cash When the Price Per Share of Class A Common Stock Equals or Exceeds $10.00

Once the warrants become exercisable, we may call the warrants for redemption (except as described below with respect to the private placement warrants):

Beginning on the date the notice of redemption is given until the warrants are redeemed or exercised, holders may elect to exercise their warrants on a cashless basis. The numbers in the table below represent the number of shares of Class A Common Stock that a warrant holder will receive upon a cashless exercise in connection with a redemption by us pursuant to this redemption feature, based on the “fair market value” of our Class A Common Stock on the corresponding redemption date (assuming holders elect to exercise their warrants and such warrants are not redeemed for $0.10 per warrant), and the number of months that the corresponding redemption date precedes the expiration date of the warrants, each as set forth in the table below.

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The “fair market value” of our Class A Common Stock shall mean the average reported last sale price of our Class A Common Stock for the 10 trading days immediately following the date on which the notice of redemption is sent to the holders of warrants. We will provide our warrant holders with the final fair market value no later than one business day after the ten-trading day period described above ends.

The exact fair market value and redemption date may not be set forth in the table above, in which case, if the fair market value is between two values in the table or the redemption date is between two redemption dates in the table, the number of shares of Class A Common Stock to be issued for each warrant exercised will be determined by a straight-line interpolation between the number of shares set forth for the higher and lower fair market values and the earlier and later redemption dates, as applicable, based on a 365-day year. For example, if the average reported last sale price of our Class A Common Stock for the 10 trading days immediately following the date on which the notice of redemption is sent to the holders of the warrants is $11.00 per share, and at such time there are 57 months until the expiration of the warrants, holders may choose to, in connection with this redemption feature, exercise their warrants for 0.277 shares of Class A Common Stock for each whole warrant. For an example where the exact fair market value and redemption date are not as set forth in the table above, if the average reported last sale price of our Class A Common Stock for the 10 trading days ending on the third trading date prior to the date on which the notice of redemption is sent to the holders of the warrants is $13.50 per share, and at such time there are 38 months until the expiration of the warrants, holders may choose to, in connection with this redemption feature, exercise their warrants for 0.298 shares of Class A Common Stock for each whole warrant. In no event will the warrants be exercisable in connection with this redemption feature for more than 0.361 shares of Class A Common Stock per whole warrant (subject to adjustment). Finally, as reflected in the table above, if the warrants are “out of the money” (i.e. the trading price of our Class A Common Stock is below the exercise price of the warrants) and about to expire, they cannot be exercised on a cashless basis in connection with a redemption by us pursuant to this redemption feature, since they will not be exercisable for any shares of Class A Common Stock.

This redemption feature differs from the typical warrant redemption features used in some other blank check offerings, which typically only provide for a redemption of warrants for cash (other than the private placement warrants) when the trading price for the Class A Common Stock exceeds $18.00 per share for a specified period of time. This redemption feature is structured to allow for all of the outstanding warrants to be redeemed when the Class A Common Stock is trading at or above $10.00 per share, which may be at a time when the trading price of our Class A Common Stock is below the exercise price of the warrants. We have established this redemption feature to provide the warrants with an additional liquidity feature, which provides us with the flexibility to redeem the warrants without the warrants having to reach the $18.00 per share threshold. Holders choosing to exercise their warrants in connection with a redemption pursuant to this feature will, in effect, receive a number of shares for their warrants, based on the “redemption price” as determined pursuant to the above table. We have calculated the “redemption prices” as set forth in the table above to reflect a Black-Scholes option pricing model with a fixed volatility input as of October 21, 2020. This redemption right provides us an additional mechanism by which to redeem all of the outstanding warrants and therefore have certainty as to our capital structure as the warrants would no longer be outstanding and would have been exercised or redeemed, and we will effectively be required to pay the redemption price to warrant holders if we choose to exercise this redemption right, it will allow us to quickly proceed with a redemption of the warrants if we determine it is in our best interest to do so. As such, we would redeem the warrants in this manner when we believe it is in our best interest to update our capital structure to remove the warrants and pay the redemption price to the warrant holders.

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As stated above, we can redeem the warrants when the Class A Common Stock is trading at a price starting at $10.00, which is below the exercise price of $11.50, because it will provide certainty with respect to our capital structure and cash position while providing warrant holders with the opportunity to exercise their warrants on a cashless basis for the applicable number of shares of Class A Common Stock. If we choose to redeem the warrants when the Class A Common Stock is trading at a price below the exercise price of the warrants, this could result in the warrant holders receiving fewer shares of Class A Common Stock than they would have received if they had chosen to wait to exercise their warrants for shares of Class A Common Stock if and when such shares of Class A Common Stock were trading at a price higher than the exercise price of $11.50. No fractional shares of Class A Common Stock will be issued upon exercise. If, upon exercise, a holder would be entitled to receive a fractional interest in a share, we will round down to the nearest whole number of the number of shares of Class A Common Stock to be issued to the holder.

Redemption Procedures

A holder of a warrant may notify us in writing in the event it elects to be subject to a requirement that such holder will not have the right to exercise such warrant, to the extent that after giving effect to such exercise, such person (together with such person’s affiliates), to the warrant agent’s actual knowledge, would beneficially own in excess 9.8% (or such other amount as a holder may specify) of the shares of Class A Common Stock outstanding immediately after giving effect to such exercise.

Anti-Dilution Adjustments

The stock prices set forth in the column headings of the table above shall be adjusted as of any date on which the number of shares issuable upon exercise of a warrant is adjusted pursuant to the following three paragraphs. The adjusted stock prices in the column headings shall equal the stock prices immediately prior to such adjustment, multiplied by a fraction, the numerator of which is the number of shares deliverable upon exercise of a warrant immediately prior to such adjustment and the denominator of which is the number of shares deliverable upon exercise of a warrant as so adjusted. The number of shares in the table above shall be adjusted in the same manner and at the same time as the number of shares issuable upon exercise of a warrant.

If the number of outstanding shares of Class A Common Stock is increased by a stock dividend payable in shares of Class A Common Stock, or by a split-up of shares of Class A Common Stock or other similar event, then, on the effective date of such stock dividend, split-up or similar event, the number of shares of Class A Common Stock issuable on exercise of each warrant will be increased in proportion to such increase in the outstanding shares of Class A Common Stock. A rights offering to holders of Class A Common Stock entitling holders to purchase shares of Class A Common Stock at a price less than the fair market value will be deemed a stock dividend of a number of shares of Class A Common Stock equal to the product of (i) the number of shares of Class A Common Stock actually sold in such rights offering (or issuable under any other equity securities sold in such rights offering that are convertible into or exercisable for Class A Common Stock) multiplied by (ii) 1 minus the quotient of (x) the price per share of Class A Common Stock paid in such rights offering divided by (y) the fair market value. For these purposes (i) if the rights offering is for securities convertible into or exercisable for Class A Common Stock, in determining the price payable for Class A Common Stock, there will be taken into account any consideration received for such rights, as well as any additional amount payable upon exercise or conversion and (ii) fair market value means the volume weighted average price of Class A Common Stock as reported during the 10 trading day period ending on the trading day prior to the first date on which the shares of Class A Common Stock trade on the applicable exchange or in the applicable market, regular way, without the right to receive such rights.

In addition, if we, at any time while the warrants are outstanding and unexpired, pay a dividend or make a distribution in cash, securities or other assets to the holders of Class A Common Stock on account of such shares of Class A Common Stock (or other shares of our capital stock into which the warrants are convertible), other than (a) as described above, (b) certain ordinary cash dividends, or (c) to satisfy the redemption rights of the holders of Class A Common Stock in connection with the Business Combination, then the warrant exercise price will be decreased, effective immediately after the effective date of such event, by the amount of cash and/or the fair market value of any securities or other assets paid on each share of Class A Common Stock in respect of such event.

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If the number of outstanding shares of our Class A Common Stock is decreased by a consolidation, combination, reverse stock split or reclassification of shares of Class A Common Stock or other similar event, then, on the effective date of such consolidation, combination, reverse stock split, reclassification or similar event, the number of shares of Class A Common Stock issuable on exercise of each warrant will be decreased in proportion to such decrease in outstanding shares of Class A Common Stock.

Whenever the number of shares of Class A Common Stock purchasable upon the exercise of the warrants is adjusted, as described above, the warrant exercise price will be adjusted by multiplying the warrant exercise price immediately prior to such adjustment by a fraction (x) the numerator of which will be the number of shares of Class A Common Stock purchasable upon the exercise of the warrants immediately prior to such adjustment, and (y) the denominator of which will be the number of shares of Class A Common Stock so purchasable immediately thereafter.

In case of any reclassification or reorganization of the outstanding shares of Class A Common Stock (other than those described above or that solely affects the par value of such shares of Class A Common Stock), or in the case of any merger or consolidation of us with or into another corporation (other than a consolidation or merger in which we are the continuing corporation and that does not result in any reclassification or reorganization of our outstanding shares of Class A Common Stock), or in the case of any sale or conveyance to another corporation or entity of the assets or other property of us as an entirety or substantially as an entirety in connection with which we are dissolved, the holders of the warrants will thereafter have the right to purchase and receive, upon the basis and upon the terms and conditions specified in the warrants and in lieu of the shares of our Class A Common Stock immediately theretofore purchasable and receivable upon the exercise of the rights represented thereby, the kind and amount of shares of stock or other securities or property (including cash) receivable upon such reclassification, reorganization, merger or consolidation, or upon a dissolution following any such sale or transfer, that the holder of the warrants would have received if such holder had exercised their warrants immediately prior to such event. If less than 70% of the consideration receivable by the holders of Class A Common Stock in such a transaction is payable in the form of common stock in the successor entity that is listed for trading on a national securities exchange or is quoted in an established over-the-counter market, or is to be so listed for trading or quoted immediately following such event, and if the registered holder of the warrant properly exercises the warrant within thirty days following public disclosure of such transaction, the warrant exercise price will be reduced as specified in the Warrant Agreement based on the Black-Scholes value (as defined in the Warrant Agreement) of the warrant.

The warrants have been issued in registered form under a warrant agreement (the “Warrant Agreement”) between Continental Stock Transfer & Trust Company, as warrant agent, and us. The Warrant Agreement provides that the terms of the warrants may be amended without the consent of any holder to cure any ambiguity or correct any defective provision, but requires the approval by the holders of at least 50% of the then outstanding public warrants to make any change that adversely affects the interests of the registered holders of public warrants. If an amendment adversely affects the private placement warrants in a different manner than the public warrants or vice versa, then approval of holders of at least 65% of the then-outstanding public warrants and 65% of the then-outstanding private placement warrants, voting as separate classes, is required.

The warrants may be exercised upon surrender of the warrant certificate on or prior to the expiration date at the offices of the warrant agent, with the exercise form on the reverse side of the warrant certificate completed and executed as indicated, accompanied by full payment of the exercise price (or on a cashless basis, if applicable), by certified or official bank check payable to us, for the number of warrants being exercised. The warrant holders do not have the rights or privileges of holders of Class A Common Stock or any voting rights until they exercise their warrants and receive shares of Class A Common Stock. After the issuance of shares of Class A Common Stock upon exercise of the warrants, each holder will be entitled to one vote for each share held of record on all matters to be voted on by stockholders.

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No fractional shares will be issued upon exercise of the warrants. If, upon exercise of the warrants, a holder would be entitled to receive a fractional interest in a share, we will, upon exercise, round down to the nearest whole number of shares of Class A Common Stock to be issued to the warrant holder.

Private Placement Warrants

The private placement warrants will not be redeemable by us (except as described above under “—Public Stockholders’ Warrants – Redemption of Warrants for Cash When the Price Per Share of Class A Common Stock Equals or Exceeds $10.00”) so long as they are held by the initial purchasers of the private placement warrants or their permitted transferees. The initial purchasers, or their permitted transferees, have the option to exercise the private placement warrants on a cashless basis. Otherwise, the private placement warrants have terms and provisions that are identical to those of the public warrants, including as to exercise price, exercisability and exercise period. If the private placement warrants are held by holders other than the initial purchasers or their permitted transferees, the private placement warrants will be redeemable by us in all redemption scenarios and exercisable by the holders on the same basis as the public warrants.

If holders of the private placement warrants elect to exercise them on a cashless basis, they would pay the exercise price by surrendering their warrants for that number of shares of Class A Common Stock equal to the quotient obtained by dividing (x) the product of the number of shares of Class A Common Stock underlying the warrants, multiplied by the difference between the exercise price of the warrants and the “fair market value” (defined below) by (y) the fair market value. The “fair market value” shall mean the average reported last sale price of the Class A Common Stock for the 10 trading days ending on the third trading day prior to the date on which the notice of warrant exercise is sent to the warrant agent.

Dividends

We have not paid any cash dividends on the Class A Common Stock to date. We may retain future earnings, if any, for future operations, expansion and debt repayment and have no current plans to pay cash dividends for the foreseeable future. Any decision to declare and pay dividends in the future will be made at the discretion of the Board and will depend on, among other things, our results of operations, financial condition, cash requirements, contractual restrictions and other factors that the Board may deem relevant. In addition, our ability to pay dividends may be limited by covenants of any existing and future outstanding indebtedness we or our subsidiaries incur.

Certain Anti-Takeover Provisions of Delaware Law and our Charter and Bylaws

Under Section 203 of the DGCL, Hyzon is prohibited from engaging in any business combination with any stockholder for a period of three years following the time that such stockholder (the “interested stockholder”) came to own at least 15% of our outstanding voting stock (the “acquisition”), except if:

Generally, a “business combination” includes any merger, consolidation, asset or stock sale or certain other transactions resulting in a financial benefit to the interested stockholder. Subject to certain exceptions, an “interested stockholder” is a person who, together with that person’s affiliates and associates, owns, or within the previous three years owned, 15% or more of our voting stock.

Under certain circumstances, declining to opt out of Section 203 of the DGCL will make it more difficult for a person who would be an “interested stockholder” to effect various business combinations with Hyzon for a three-year period. This may encourage companies interested in acquiring Hyzon to negotiate in advance with the Board because the stockholder approval requirement would be avoided if the Board approves the acquisition which results in the stockholder becoming an interested stockholder. This may also have the effect of preventing changes in the Board and may make it more difficult to accomplish transactions which stockholders may otherwise deem to be in their best interests.

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Written Consent by Stockholders

Under the Charter, subject to the rights of any series of Preferred Stock then outstanding, any action required or permitted to be taken by our stockholders must be effected at a duly called annual or special meeting of our stockholders and may not be effected by any consent in writing by such stockholders.

Special Meeting of Stockholders

Under the Charter, special meetings of our stockholders may be called only by the chairperson of the Board, the Chief Executive Officer of Hyzon or the Board acting pursuant to a resolution adopted by a majority of the total number of authorized directors whether or not there exist any vacancies in previously authorized directorships, and may not be called by any other person or persons. Only such business shall be considered at a special meeting of stockholders as shall have been stated in the notice for such meeting.

Advance Notice Requirements for Stockholder Proposals and Director Nominations

Under the Charter, advance notice of stockholder nominations for the election of directors and of business to be brought by stockholders before any meeting of our stockholders shall be given in the manner and to the extent provided in our Bylaws.

Exclusive Forum

The Charter provides that, unless Hyzon consents in writing to the selection of an alternative forum, to the fullest extent permitted by law, a state court located within the State of Delaware (or, if no court located within the State of Delaware has jurisdiction, the federal district court for the District of Delaware) shall be the sole and exclusive forum for any internal or intra-corporate claim or any action asserting a claim governed by the internal affairs doctrine as defined by the laws of the State of Delaware, including, but not limited to (i) any derivative action or proceeding brought on our behalf; (ii) any action asserting a claim of breach of a fiduciary duty owed by any of our directors, officers or other employees or stockholders to us or our stockholders; or (iii) any action asserting a claim arising pursuant to any provision of the DGCL or the Charter or the Bylaws (in each case, as they may be amended from time to time), or as to which the DGCL confers jurisdiction on the Court of Chancery of the State of Delaware.

Notwithstanding the foregoing, the Charter provides that, unless we consent in writing to the selection of an alternative forum, to the fullest extent permitted by law, the sole and exclusive forum for any action asserting a cause of action arising under the Securities Act or any rule or regulation promulgated thereunder (in each case, as amended) shall be the federal district court for the District of Delaware (or, if such court does not have jurisdiction over such action, any other federal district court of the United States); provided, however, that if the foregoing provisions are, or the application of such provisions to any person or entity or any circumstance is, illegal, invalid or unenforceable, the sole and exclusive forum for any action asserting a cause of action arising under the Securities Act or any rule or regulation promulgated thereunder (in each case, as amended) will be the Court of Chancery of the State of Delaware. To the fullest extent permitted by law, any person or entity purchasing or otherwise acquiring or holding any interest in our shares of capital stock will be deemed to have notice of and consented to the forum provision in the Charter.

Our Transfer Agent and Warrant Agent

The transfer agent for our common stock and warrant agent for our warrants is Continental Stock Transfer & Trust Company.

Listing of Securities

Our Class A Common Stock and public warrants are listed on NASDAQ under the symbols “HYZN” and “HYZNW,” respectively.

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