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 or, for greater than

10% stockholder, not less than

110% of FMV at grant):

$0.50

Total Number of Shares Subject to Option:

Total Exercise Price:

Type of Option:

Incentive Stock Option (ISO) (Note: If the Option fails to qualify as an incentive stock option pursuant to Section 422 of the Code for any reason (including, but not limited to, failure of shareholders to timely approve the Plan), then this Option will not be treated as an incentive stock option within the meaning of Section 422 of the Code.)

Term/Expiration Date:

10 years (5 years if grantee owns more than 10% of all voting stock)

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 ______________ 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.