Chris Hayden - 22 Mar 2023 Form 4 Insider Report for Sunnova Energy International Inc. (NOVA)

Footnote F1

The sale of such shares of common stock of Sunnova Energy International Inc. ("Common Stock") was authorized by the reporting person to cover the tax withholding obligation upon the March 22, 2023, settlement of the common stock that vested on March 10, 2023, and restricted stock units that vested on March 12, 2023.

Footnote F2

The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $13.91 to $14.10. The reporting person undertakes to provide to Sunnova Energy International Inc., any security holder thereof, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the such range.

Footnote F3

The sale of such shares of Common Stock was authorized by the reporting person to cover the tax withholding obligation upon the March 23, 2023 settlement of the restricted stock units that vested on March 22, 2023.

Footnote F4

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock.

Footnote F5

These RSUs were awarded under the Sunnova Energy International Inc. 2019 Long-Term Incentive Plan ("Plan") and vest in full on the third anniversary of the date of grant. Common Stock will be delivered to the reporting person no later than 15 days after the RSUs vest.

Footnote F6

These Nonqualified Stock Options ("Options") were granted under the Plan and become exercisable in full on the third anniversary of the date of grant.