STPK Star Peak Energy Transition Corp

FORM 4 [X] 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 * Star Peak Sponsor LLC	2. Issuer Name and Ticker or Trading Symbol Star Peak Energy Transition Corp. [ STPK ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                    __X__ 10% Owner _____ Officer (give title below)    _____ Other (specify below)
(Last)          (First)          (Middle) 1603 ORRINGTON AVENUE, 13TH FLOOR	3. Date of Earliest Transaction (MM/DD/YYYY) 4/28/2021
(Street) EVANSTON, IL 60201 (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
Common Stock	4/28/2021		M(1)		9509626	A	$0 (1)	9509626	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)	4/28/2021		M (1)			9509626	(1)	(1)	Class A Common Stock	9509626	$0	0	D (2)

Explanation of Responses:
(1)	As described in the registrant's registration statement on Form S-1 (File No. 333-240267) under the heading "Description of Securities-Founder Shares," the shares of Class B common stock were automatically convertible into shares of Class A common stock at the time of the registrant's initial business combination on a one-for-one basis, subject to certain adjustments described therein and have no expiration date. In connection with the closing of the registrant's initial business combination, the outstanding shares of Class B common stock were converted into shares of Class A common stock.
(2)	The reporting person is controlled by a board of managers consisting of Eric Scheyer, Alex Litowitz and Michael C. Morgan; voting and dispositive decisions with respect to the securities of the issuer held by the reporting person require the unanimous consent of the board of managers. Accordingly, each of Messrs. Scheyer, Litowitz and Morgan are deemed to have or share beneficial ownership of the securities held directly by the reporting person.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Star Peak Sponsor LLC 1603 ORRINGTON AVENUE 13TH FLOOR EVANSTON, IL 60201		X

Signatures
/s/ Eric Scheyer		4/30/2021
**Signature of Reporting Person		Date