Sec Form 3 Filing - Robb Gary M @ Decarbonization Plus Acquisition Corp - 2021-07-16

FORM 3 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 Robb Gary M 2. Issuer Name and Ticker or Trading Symbol Decarbonization Plus Acquisition Corp [ HYZN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Technology Officer (Last) (First) (Middle) C/O 475 QUAKER MEETING HOUSE ROAD 3. Date of Earliest Transaction (MM/DD/YY) 07/16/2021 (Street) HONEOYE FALLS, NY14472 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

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 Employee Stock Options $ 2 ( 1 ) ( 1 ) Class A Common Stock, par value $0.0001 per share 1,772,000 ( 2 ) ( 3 ) D

Reporting Owners Reporting Owner Name / Address Relationships D irector 10% Owner Officer Other Robb Gary M C/O 475 QUAKER MEETING HOUSE ROAD HONEOYE FALLS, NY14472 Chief Technology Officer Signatures /s/ John Zavoli, Attorney-in-fact 07/16/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Employee stock options under the Hyzon Motors Inc. 2020 Stock Incentive Plan, granted on November 12, 2020 (the "Grant Date"); options vest pursuant to a five year vesting schedule, whereby approximately one-sixth of the total number of shares vests on the Grant Date and each year on the anniversary of the Grant Date, subject to continued employment with the Issuer. ( 2 )On July 16, 2021, pursuant to the Business Combination Agreement and Plan of Reorganization, dated as of February 8, 2021 (the "Business Combination Agreement"), by and among Hyzon Motors Inc. (f/k/a Decarbonization Plus Acquisition Corporation) (the "Issuer"), DCRB Merger Sub Inc. a wholly owned subsidiary of the Issuer ("Merger Sub") and Hyzon Motors USA Inc. (f/k/a Hyzon Motors Inc.) ("Old Hyzon"), Merger Sub merged with and into Old Hyzon with Old Hyzon as the surviving corporation and a wholly owned subsidiary of the Issuer (the "Merger"). At the effective time of the Merger, each option to purchase shares of Old Hyzon was assumed by the Issuer and converted into (A) an option to purchase shares of Class A common stock of the Issuer equal to the product (rounded down to the nearest whole number) of (x) the number of Old Hyzon shares subject to the option immediately prior to the effective time of the Merger and (y) 1.7720 (the "Exchange Ratio"), ( 3 )(Continued from footnote 2) at an exercise price (rounded up to the nearest whole cent) equal to (i) the exercise price per share of such option divided by (ii) the Exchange Ratio, on the same terms and conditions as the original award (including with respect to vesting) that applied to such option immediately prior to the Merger and (B) the contingent right to receive Earnout Shares (as defined in the Business Combination Agreement) in accordance with Section 3.03 of the Business Combination Agreement.

Remarks: See Exhibit 24 - Power of Attorney

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

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