Sec Form 4 Filing - Kazarinoff Dimitri @ XL Fleet Corp. - 2020-12-21

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Kazarinoff Dimitri 2. Issuer Name and Ticker or Trading Symbol XL Fleet Corp. [ XL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Executive Officer (Last) (First) (Middle) C/O XL FLEET CORP., 145 NEWTON STREET 3. Date of Earliest Transaction (MM/DD/YY) 12/21/2020 (Street) BOSTON, MA02135 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 12/21/2020 A 15,346 A 15,346 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Option (right to buy) $ 0.24 12/21/2020 A 3,808,966 ( 2 ) 12/05/2029 Common Stock 3,808,966 ( 3 ) 3,808,966 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Kazarinoff Dimitri C/O XL FLEET CORP. 145 NEWTON STREET BOSTON, MA02135 X Chief Executive Officer Signatures /s/ Jenna Stewart, Attorney-in-Fact 12/23/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Mr. Kazarinoff received 15,346 shares in exchange for his 20,267 shares of XL Hybrids, Inc., a Delaware corporation ("Legacy XL"), in connection with the Agreement and Plan of Reorganization, dated as of September 17, 2020, by and among Pivotal Investment Corporation II ("Pivotal"), PIC II Merger Sub Corp., a Delaware corporation and wholly owned subsidiary of Pivotal ("Merger Sub"), and Legacy XL, pursuant to which Merger Sub merged with and into Legacy XL (the "Merger"), with Legacy XL surviving as a wholly-owned subsidiary of Pivotal (which subsequently changed its name to "XL Fleet Corp.", the "Issuer"). ( 2 )The shares underlying this option vest in 48 equal monthly starting on October 7, 2019 subject to Mr. Kazarinoff's continued service through the applicable vesting dates. ( 3 )Received in the Merger in exchange for a stock option to acquire 5,030,400 shares of Legacy XL common stock for $0.18 per share.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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