Description of Registered Securities

Exhibit 4.6

XL FLEET CORP.

DESCRIPTION OF SECURITIES REGISTERED PURSUANT TO

SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934

XL Fleet Corp., a Delaware corporation (“Company,” “we,” “us,” or “our”), has one class of securities registered pursuant to Section 12 of the Securities Exchange Act of 1934 (the “Exchange Act”): our common stock, $0.0001 par value per share (“Common Stock”). The following summary of the material terms of our 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 (our “Certificate of Incorporation”) and our Amended and Restated Bylaws (our “Bylaws”) herein, which are filed as exhibits to our most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) as may be amended by a document filed with one of our periodic reports filed with the SEC subsequent to the date of that Annual Report. We urge you to read each of our Certificate of Incorporation and our Bylaws in their entirety for a complete description of the rights and preferences of our securities.

On December 21, 2020 (the “Closing Date”), Pivotal Investment Corporation II, a special purpose acquisition company incorporated on March 20, 2019 (“Pivotal”), consummated a business combination pursuant to that certain Agreement and Plan of Reorganization, dated as of September 17, 2020 (the “Merger Agreement”), by and among Pivotal, PIC II Merger Sub Corp., a Delaware corporation and wholly owned subsidiary of Pivotal (“Merger Sub”), and XL Hybrids, Inc., a Delaware corporation (“Legacy XL”). Pursuant to the terms of the Merger Agreement, a business combination between Pivotal and Legacy XL was effected through the merger of Merger Sub with and into Legacy XL, with Legacy XL surviving as the surviving company and as a wholly-owned subsidiary of Pivotal (the “Merger” and, collectively with the other transactions described in the Merger Agreement, the “Business Combination”). On the Closing Date, and in connection with the closing of the Business Combination (the “Closing”), Pivotal Investment Corporation II changed its name to XL Fleet Corp.

Authorized and Outstanding Stock

Our Certificate of Incorporation authorizes the issuance of 351,000,000 shares of Common Stock, $0.0001 par value per share, and 1,000,000 shares of preferred stock, $0.0001 par value per share. As of March 30, 2021, there were approximately 139,105,704 shares of Common Stock and no shares of preferred stock outstanding. The outstanding shares of Common Stock are duly authorized, validly issued, fully paid and non-assessable.

Common Stock

Except as otherwise required by law, our Certificate of Incorporation or as otherwise provided in any certificate of designation for any series of preferred stock, the holders of Common Stock possess all voting power for the election of the directors of our board of directors (our “Board”) and all other matters requiring stockholder action. Holders of Common Stock are entitled to one vote per share on matters to be voted on by stockholders. There is no cumulative voting. Subject to the rights of any holders of any shares of preferred stock which may from time to time come into existence and be outstanding, the holders of Common Stock are entitled to the payment of dividends when and as declared by our Board in accordance with applicable law and to receive other distributions from us. Holders of Common Stock have no conversion, preemptive or other subscription rights and there are no sinking fund or redemption provisions applicable to the Common Stock. Under our Certificate of Incorporation, our Board is divided into three classes, each of which generally serve for a term of three years with only one class of directors being elected in each year.

Under our Certificate of Incorporation, the affirmative vote of the holders of shares of voting stock representing at least seventy-five percent (75%) of the voting power of all of the then outstanding shares of the capital stock entitled to vote generally in the election of directors, voting together as a single class, shall be required to amend, alter or repeal, or adopt any provision inconsistent with, Articles Sixth, Seventh, Eighth, Ninth and Tenth of our Certificate of Incorporation, which articles generally govern the appointment of directors, the amendment of our Bylaws, limitation of liability and indemnification, forum selection, and amendments to our Certificate of Incorporation, respectively. Subject to the rights of the holders of shares of any series of preferred stock then outstanding, any director, or our entire Board, may be removed from office at any time only for cause and only by the affirmative vote of the holders of at least seventy-five percent (75%) of the voting power of all of the then-outstanding shares of capital stock entitled to vote at an election of directors, voting together as a single class.

Preferred Stock

If we issue preferred stock, such preferred stock would have priority over our Common Stock with respect to dividends and other distributions, including the distribution of assets upon liquidation. Our Certificate of Incorporation grants our Board the authority, without further stockholder authorization, to issue from time to time up to 1,000,000 shares of preferred stock in one or more series and to fix the terms, limitations, voting rights, relative rights and preferences and variations of each series.

Warrants

As of December 31, 2020, we had 12,149,117 warrants outstanding, consisting of 249,117 Legacy XL warrants, 7,666,667 public warrants and 4,233,333 private placement warrants..

Each outstanding warrant enables the holder to purchase one share of Common Stock at a price of $11.50 per share, subject to adjustment as discussed below. The warrants will expire at 5:00 p.m., New York City time, five years after the consummation of the Business Combination or earlier upon redemption or liquidation.

We may call the warrants for redemption (excluding the private placement warrants), in whole and not in part, at a price of $0.01 per warrant,

The right to exercise will be forfeited unless the warrants are exercised prior to the date specified in the notice of redemption. On and after the redemption date, a record holder of a warrant will have no further rights except to receive the redemption price for such holder’s warrant upon surrender of such warrant.

If we call the warrants for redemption as described above, our management will have the option to require all holders that wish to exercise warrants to do so on a “cashless basis.” In such event, each holder would pay the exercise price by surrendering the warrants for that number of shares of Common Stock equal to the quotient obtained by dividing (x) the product of the number of shares of our 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. In this case, the “fair market value” shall mean the average reported last sale price of the shares of our Common Stock for the 10 trading days ending on the third trading day prior to the date on which the notice of redemption is sent to the holders of warrants. Whether we will exercise our option to require all holders to exercise their warrants on a “cashless basis” will depend on a variety of factors including the price of shares of our Common Stock at the time the warrants are called for redemption, our cash needs at such time and concerns regarding dilutive stock issuances.

The exercise price and number of shares of Common Stock issuable upon exercise of the warrants may be adjusted in certain circumstances including in the event of a share dividend, extraordinary dividend or our recapitalization, reorganization, merger or consolidation. However, the warrants will not be adjusted for issuances of shares of Common Stock at a price below the respective exercise prices of the warrants.

After the issuance of shares of Common Stock upon exercise of the warrants, each holder will be entitled to one vote for each share of Common Stock held of record on all matters to be voted on by stockholders.

Warrant holders may elect to be subject to a restriction on the exercise of their warrants such that an electing warrant holder would not be able to exercise their warrants to the extent that, after giving effect to such exercise, such holder would beneficially own in excess of 4.9% or 9.8% (as specified by the holder) of the shares of our Common Stock outstanding immediately after giving effect to such exercise.

If the number of outstanding shares of Common Stock is increased by a share dividend payable in shares of Common Stock, or by a split-up of shares of Common Stock or other similar event, then, on the effective date of such share dividend, split-up or similar event, the number of shares of Common Stock issuable on exercise of each warrant will be increased in proportion to such increase in the outstanding Common Stock. A rights offering to holders of Common Stock entitling holders to purchase shares of Common Stock at a price less than the fair market value will be deemed a stock dividend of a number of shares of Common Stock equal to the product of (i) the number of shares of 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 Common Stock) and (ii) one (1) minus the quotient of (x) the price per share of 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 Common Stock, in determining the price payable for 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 Common Stock as reported during the ten (10) trading day period ending on the trading day prior to the first date on which the shares of 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 Common Stock on account of such Common Stock (or other securities into which the warrants are convertible), other than (a) as described above, or (b) certain ordinary cash dividends, which are dividends of $0.50 or less in any fiscal year (subject to adjustments), 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 Common Stock in respect of such event.

If the number of outstanding shares of Common Stock is decreased by a consolidation, combination, reverse stock split or reclassification of 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 Common Stock issuable on exercise of each warrant will be decreased in proportion to such decrease in outstanding shares of Common Stock. We will not be required to make adjustments to the exercise price for any other events including the issuance of additional shares of Common Stock other than dividends paid in Common Stock as described above.

Whenever the number of shares of 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 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 Common Stock so purchasable immediately thereafter.

In the case of any reclassification or reorganization of the outstanding Common Stock (other than those described above or that solely affects the par value of such 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 Common Stock), or in the case of any sale or conveyance to another corporation or entity of the assets or other property of ours as an entirety or substantially as an entirety in connection with which we is 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 Common Stock immediately theretofore purchasable and receivable upon the exercise of the rights represented thereby, the kind and amount of Common 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 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 purpose of such exercise price reduction is to provide additional value to holders of the warrants when an extraordinary transaction occurs during the exercise period of the warrants pursuant to which the holders of the warrants otherwise do not receive the full potential value of the warrants in order to determine and realize the option value component of the warrant. This formula is to compensate the warrantholder for the loss of the option value portion of the warrant due to the requirement that the warrantholder exercise the warrant within 30 days of the event. The Black-Scholes model is an accepted pricing model for estimating fair market value where no quoted market price for an instrument is available.

No fractional shares of Common Stock 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 of Common Stock, we will, upon exercise, follow the requirements of the DGCL.

Lock-Up Restrictions 

Certain of our stockholders are subject to certain restrictions on transfer until the termination of applicable lock-up periods.

Certain Anti-Takeover Provisions of Delaware Law

Staggered Board

Our Certificate of Incorporation provides that our Board be classified into three classes of directors of approximately equal size. As a result, in most circumstances, a person can gain control of our Board only by successfully engaging in a proxy contest at two or more annual or special meetings. Furthermore, because our Board is classified, directors may be removed only with cause by a majority of our outstanding shares.

Special meeting of stockholders

Our Bylaws provide that special meetings of stockholders may be called only by a majority vote of our Board.

Advance notice requirements for stockholder proposals and director nominations

Our Bylaws provide that stockholders of record seeking to bring business before an annual meeting of stockholders, or to nominate candidates for election as directors at our annual meeting of stockholders, must provide timely notice of their intent in writing. To be timely, a stockholder’s notice will need to be received by our secretary at our principal executive offices not later than the close of business on the 90th day nor earlier than the open of business on the 120th day prior to the anniversary date of the immediately preceding annual meeting of stockholders. Pursuant to Rule 14a-8 of the Exchange Act, proposals seeking inclusion in our annual proxy statement must comply with the notice periods contained therein. Our Bylaws also specify certain requirements as to the form and content of a stockholders’ meeting. These provisions may preclude our stockholders from bringing matters before the annual meeting of stockholders or from making nominations for directors at our annual meeting of stockholders.

Authorized but unissued shares

Our authorized but unissued Common Stock and preferred stock are available for future issuances without stockholder approval and could be utilized for a variety of corporate purposes, including future offerings to raise additional capital, acquisitions and employee benefit plans. The existence of authorized but unissued and unreserved Common Stock and preferred stock could render more difficult or discourage an attempt to obtain control of us by means of a proxy contest, tender offer, merger or otherwise.

Stockholder action by written consent

Our Certificate of Incorporation and Bylaws provide that any action required or permitted to be a taken by stockholders must be effected at an annual or special meeting, and may not be taken by written consent (subject to the rights of any preferred stock then outstanding).

Exclusive forum selection

Our Certificate of Incorporation requires that unless we consent in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware (or, in the event that the Chancery Court does not have jurisdiction, the federal district court for the District of Delaware or other state courts of the State of Delaware) shall, to the fullest extent permitted by law, be the sole and exclusive forum for (i) any derivative action or proceeding brought on behalf of we, (ii) any action asserting a claim of breach of a fiduciary duty owed by any current or former director, officer, employee or agent of we to we or its stockholders, (iii) any action asserting a claim against we arising pursuant to any provision of the Delaware General Corporation Law ( the “DGCL”) or our Certificate of Incorporation or Bylaws (as either may be amended from time to time), (iv) any action or proceeding to interpret, apply, enforce or determine the validity of our Certificate of Incorporation or Bylaws (including any right, obligation, or remedy thereunder) or (v) any action asserting a claim against we governed by the internal affairs doctrine. The enforceability of similar choice of forum provisions in other companies’ organizational documents has been challenged in legal proceedings, and it is possible that, in connection with claims arising under federal securities laws, a court could find the choice of forum provisions contained in our Certificate of Incorporation to be inapplicable or unenforceable. If that were the case, because stockholders will not be deemed to have waived our compliance with the federal securities laws and the rules and regulations thereunder, it would allow stockholders to bring claims for breach of these provisions in any appropriate forum. Although we believe this provision benefits us by providing increased consistency in the application of Delaware law in the types of lawsuits to which it applies, the provision may have the effect of discouraging lawsuits against our directors and officers.

Notwithstanding the foregoing, Section 27 of the Exchange Act creates exclusive federal jurisdiction over all suits brought to enforce any duty or liability created by the Exchange Act or the rules and regulations thereunder. As a result, the exclusive forum provision will not apply to suits brought to enforce any duty or liability created by the Exchange Act or any other claim for which the federal courts have exclusive jurisdiction.

Section 203 of the Delaware General Corporation Law

We have not opted out of Section 203 of the DGCL under our Certificate of Incorporation. As a result, pursuant to Section 203 of the DGCL, we are 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 the 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 outstanding 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 us for a three-year period. This may encourage companies interested in acquiring us to negotiate in advance with our Board because the stockholder approval requirement would be avoided if our Board approves the acquisition which results in the stockholder becoming an interested stockholder. This may also have the effect of preventing changes in our Board and may make it more difficult to accomplish transactions which stockholders may otherwise deem to be in their best interests.

Limitation on Liability and Indemnification of Directors and Officers

Our Certificate of Incorporation limits our directors’ liability to the fullest extent permitted under the DGCL. The DGCL provides that directors of a corporation will not be personally liable for monetary damages for breach of their fiduciary duties as directors, except for liability:

If the DGCL is amended to authorize corporate action further eliminating or limiting the personal liability of directors, then the liability of our directors will be eliminated or limited to the fullest extent permitted by the DGCL, as so amended.

Delaware law and our Bylaws provide that, in certain circumstances and subject to certain limitations, we will indemnify our directors and officers and may indemnify other employees and other agents, to the fullest extent permitted by law. Any indemnified person is also entitled, subject to certain limitations, to advancement, direct payment, or reimbursement of reasonable expenses (including attorneys’ fees and disbursements) in advance of the final disposition of the proceeding.

In addition, we have entered into separate indemnification agreements with each of our directors and officers. These agreements, among other things, require us to indemnify our directors and officers for certain expenses, including attorneys’ fees, judgments, fines and settlement amounts incurred by a director or officer in any action or proceeding arising out of their services as one of our directors or officers or any other company or enterprise to which the person provides services at our request.

We currently maintain a directors’ and officers’ insurance policy pursuant to which our directors and officers are insured against liability for actions taken in their capacities as directors and officers.

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers, or control persons, in the opinion of the SEC, such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable.

Rule 144

Rule 144 is not available for the resale of securities initially issued by shell companies (other than business combination related shell companies) or issuers that have been at any time previously a shell company, such as the Company. However, Rule 144 also includes an important exception to this prohibition if the following conditions are met:

Upon the Closing, the Company ceased to be a shell company.

When and if Rule 144 becomes available for the resale of our securities, a person who has beneficially owned restricted shares of our Common Stock for at least six months would be entitled to sell their securities, provided that (i) such person is not deemed to have been one of our affiliates at the time of, or at any time during the three months preceding, a sale and (ii) we are subject to the Exchange Act periodic reporting requirements for at least three months before the sale and have filed all required reports under Section 13 or 15(d) of the Exchange Act during the 12 months (or such shorter period as we were required to file reports) preceding the sale.

Persons who have beneficially owned restricted shares of our Common Stock for at least six months but who are our affiliates at the time of, or at any time during the three months preceding, a sale, would be subject to additional restrictions, by which such person would be entitled to sell within any three-month period only a number of securities that does not exceed the greater of:

Sales by our affiliates under Rule 144 will also be limited by manner of sale provisions and notice requirements and to the availability of current public information about us.

Transfer Agent and Registrar

The transfer agent and registrar for our Common Stock is Continental Stock Transfer & Trust Company.

Listing of Securities

Our Common Stock is listed on the NYSE under the symbol “XL”.

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