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 OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      
1. Name and Address of Reporting Person * Tepper Jeffrey 2. Issuer Name and Ticker or Trading Symbol Decarbonization Plus Acquisition Corp III [ DCRC ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)__X__ Director                    _____ 10% Owner
_____ Officer (give title below)    _____ Other (specify below)
(Last)         (First)         (Middle)
C/O DECARBONIZATION PLUS ACQ CORP III, 2744 SAND HILL ROAD, SUITE 100
3. Date of Earliest Transaction (MM/DD/YYYY)
10/25/2021
(Street)
MENLO PARK, CA 94025
(City)       (State)       (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)
 
6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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
Class A Common Stock  10/25/2021    C    40000  A  (1) 40000  D   

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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
Class B Common Stock   (1) 10/25/2021    C        40000    (2)  (2) Class A Common Stock  40000   (1) 0  D   

Explanation of Responses:
(1)  In accordance with the amended and restated certificate of incorporation of Decarbonization Plus Acquisition Corporation III ("DCRC"), the Reporting Person elected to convert his shares of Class B Common Stock into shares of Class A Common Stock on a one-for-one basis.
(2)  The shares of Class B Common Stock were (i) convertible into shares of Class A Common Stock at the Reporting Person's election on a one-for-one basis and (ii) automatically convertible into shares of Class A Common Stock at the time of DCRC's initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights (which rights were waived by the Reporting Person in connection with DCRC's proposed business combination), and had no expiration date.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Tepper Jeffrey
C/O DECARBONIZATION PLUS ACQ CORP III
2744 SAND HILL ROAD, SUITE 100
MENLO PARK, CA 94025
X



Signatures
Jeffrey Tepper, /s/ Peter Haskopoulos, Attorney-in-fact 10/27/2021
**Signature of Reporting Person Date
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