KEYSTAR CORP 2023 STOCK PLAN NOTICE OF STOCK OPTION GRANT

Date of Grant:

April 10, 2023

Vesting Commencement Date:

April 10, 2023

Exercise Price per Share (Not less than FMV at grant):

$0.50

Total Number of Shares Subject to Option:

Total Exercise Price:

Type of Option:

Nonstatutory Stock Option (NSO)

Term/Expiration Date:

10 years

Vesting Schedule:

Subject to the Plan and the Stock Option Award Agreement, this Option may be exercised, in whole or in part, in accordance with the following schedule:

The Options will vest as to 25% of the shares subject to the Option on __________, 2023. Thereafter, the Option will further vest as to 1/48th of the shares subject to the Option on the ______ day of each month, beginning on ______________ 2023, for a period of 36 months; provided all vesting is subject to Grantee having provided Continuous Service to the Company or a Related Corporation through each such vesting date.

Exercise Period:

To the extent vested, the Option may be exercised for the period provided under Section 4 of the Stock Option Award Agreement (but in no event later than the Expiration Date); provided that upon a termination for Cause vested and unvested Options will be immediately terminated and forfeited.