Ex1a-6-mat-ctrct.19 Sample Contracts

BLOCKSTACK APP REVIEWER AGREEMENT

App Reviewer Agreement • July 8th, 2019 • Blockstack Inc.

• Contract Type
  App Reviewer Agreement
• Filed
  July 8th, 2019
• Company
  Blockstack Inc.

This App Reviewer Agreement (“Agreement”) is made and entered into as of February , 2019 (“Effective Date”) between Blockstack PBC, a Delaware public benefit corporation (“Blockstack”), and , a with its principal pace of business at (“Reviewer”). The parties agree as follows:

AMENDMENT TO STOCK PURCHASE AGREEMENT AND PLAN OF REORGANIZATION

Stock Purchase Agreement • May 19th, 2020 • Chemesis International Inc. • Puerto Rico

• Contract Type
  Stock Purchase Agreement
• Filed
  May 19th, 2020
• Company
  Chemesis International Inc.
• Jurisdiction
  Puerto Rico

This amendment to stock purchase agreement and plan of reorganization (the “Amendment”) is made and entered into as of the effective date of December 6, 2018, by, between, and among: