FORM 3
        
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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 *

Hultberg Kelsey
2. Date of Event Requiring Statement (MM/DD/YYYY)
5/16/2021 

3. Issuer Name and Ticker or Trading Symbol

Sunnova Energy International Inc. [NOVA]
(Last)        (First)        (Middle)

20 EAST GREENWAY PLAZA,, SUITE 540
4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                          _____ 10% Owner
___X___ Officer (give title below)        _____ Other (specify below)
See Remarks /
(Street)

HOUSTON, TX 77046      

(City)              (State)              (Zip)
5. 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 Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 10512 D  
Common Stock 675 I By Spouse 

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(MM/DD/YYYY)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Non-Qualified Stock Option (Right to Buy)  (1)4/2/2028 Common Stock 4286.0 $13.58 D  
Non-Qualified Stock Option (Right to Buy)  (2)9/5/2028 Common Stock 12858.0 $13.58 D  
Non-Qualified Stock Option (Right to Buy)  (3)2/25/2029 Common Stock 10715.0 $13.58 D  
Restricted Stock Units  (4) (4)Common Stock 3710.0  (5)D  
Restricted Stock Units  (6) (6)Common Stock 2376.0  (5)D  
Restricted Stock Units  (7) (7)Common Stock 895.0  (5)D  

Explanation of Responses:
(1) These Nonqualified Stock Options ("Options") were originally granted under the Stock Option Plan of Sunnova Energy Corporation (the "Plan") on April 2, 2018 and are fully vested.
(2) These Options were originally granted under the Plan on September 5, 2018 and are fully vested.
(3) These Options were originally granted under the Plan on February 25, 2019 and are fully vested.
(4) The Restricted Stock Units ("RSUs") will vest in two equal annual installments beginning on March 12, 2022. Common stock of the Issuer ("Common Stock") will be delivered to the reporting person no later than 15 days after the RSUs vest.
(5) Each RSU represents a contingent right to receive one share of Common Stock.
(6) The RSUs will vest in three equal annual installments beginning on March 22, 2022. Common Stock will be delivered to the reporting person no later than 15 days after the RSUs vest.
(7) The RSUs will vest in full on April 1, 2022. Common Stock will be delivered to the reporting person no later than 15 days after the RSUs vest.

Remarks:
Executive Vice President, Chief of Staff

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Hultberg Kelsey
20 EAST GREENWAY PLAZA,
SUITE 540
HOUSTON, TX 77046


See Remarks

Signatures
/s/ Walter A. Baker by Power of Attorney5/18/2021
**Signature of Reporting PersonDate

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