Sec Form 3 Filing - Energy Capital Partners Holdings, LP @ Fast Radius, Inc. - 2022-02-04

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 Energy Capital Partners Holdings, LP 2. Issuer Name and Ticker or Trading Symbol Fast Radius, Inc. [ FSRD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O ECP CONTROLCO, LLC, 40 BEECHWOOD ROAD 3. Date of Earliest Transaction (MM/DD/YY) 02/04/2022 (Street) SUMMIT, NJ07901 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ 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 9,895,461 I See footnote( 1 )( 2 )

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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Energy Capital Partners Holdings, LP C/O ECP CONTROLCO, LLC 40 BEECHWOOD ROAD SUMMIT, NJ07901 X X ENNV GP, LLC C/O ECP CONTROLCO, LLC 40 BEECHWOOD ROAD SUMMIT, NJ07901 X X ECP Energy Transition Opportunities, LLC C/O ECP CONTROLCO, LLC 40 BEECHWOOD ROAD SUMMIT, NJ07901 X X ECP Energy Transition Opportunities GP, LP C/O ECP CONTROLCO, LLC 40 BEECHWOOD ROAD SUMMIT, NJ07901 X X ECP ENERGY TRANSITION OPPORTUNITIES FUND A, LP C/O ECP CONTROLCO, LLC 40 BEECHWOOD ROAD SUMMIT, NJ07901 X X ECP ENERGY TRANSITION OPPORTUNITIES FUND B, LP C/O ECP CONTROLCO, LLC 40 BEECHWOOD ROAD SUMMIT, NJ07901 X X Signatures Energy Capital Partners Holdings, LP, By: ECP ControlCo, LLC, its general partner, By: /s/ Tyler Reeder, Managing Member 02/25/2022 Signature of Reporting Person Date ENNV GP, LLC , By: ECP ControlCo, LLC, its managing member, By: /s/ Tyler Reeder, Managing Member 02/25/2022 Signature of Reporting Person Date ECP Energy Transition Opportunities, LLC, By: ECP ControlCo, LLC, its managing member, By: /s/ Tyler Reeder, Managing Member 02/25/2022 Signature of Reporting Person Date ECP Energy Transition Opportunities GP, LP, By: ECP Energy Transition Opportunities, LLC, its general partner, By: ECP ControlCo, LLC, its managing member, By: /s/ Tyler Reeder, Managing Member 02/25/2022 Signature of Reporting Person Date ECP Energy Transition Opportunities Fund A, LP, By: ECP Energy Transition Opportunities GP, LP, its gen. part., By: ECP Energy Transition Opportunities, LLC, its gen. part., By: ECP ControlCo, LLC, its man. member, By: /s/ Tyler Reeder, Managing Member 02/25/2022 Signature of Reporting Person Date ECP Energy Transition Opportunities Fund B, LP, By: ECP Energy Transition Opportunities GP, LP, its gen. part., By: ECP Energy Transition Opportunities, LLC, its gen. part., By: ECP ControlCo, LLC, its man. member, By: /s/ Tyler Reeder, Managing Member 02/25/2022 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Includes: (i) 8,340,000 shares of Common Stock held of record by ENNV Holdings, LLC (the "Sponsor"); (ii) 731,340 shares of Common Stock held of record by ECP Energy Transition Opportunities Fund A, LP ("Fund A"); (iii) 68,660 shares of Common Stock held of record by ECP Energy Transition Opportunities Fund B, LP ("Fund B"); and (iv) 755,461 shares of Common Stock held of record by Energy Capital Partners Holdings, LP ("ECP Holdings"). ( 2 )ECP ControlCo, LLC ("ECP ControlCo") is the managing member of each of ENNV GP, LLC ("ENNV GP") and ECP Energy Transition Opportunities, LLC ("Energy Transition") and the general partner of ECP Holdings. ENNV GP is the managing member of the Sponsor. Energy Transition is the general partner of ECP Energy Transition Opportunities GP, LP, which is the general partner of each of Fund A and Fund B. Douglas Kimmelman, Andrew Singer, Peter Labbat, Tyler Reeder and Rahman D'Argenio are the managing members of ECP ControlCo and may be deemed to share the power to vote and dispose of the securities reported herein. Each of them disclaims beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein.

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).

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