Amendment to Schedule 13G Filing for Reviva Pharmaceuticals Holdings, Inc.

CVI Investments, Inc. and Heights Capital Management, Inc. have jointly filed an amendment to their Schedule 13G, reporting beneficial ownership of Reviva Pharmaceuticals Holdings, Inc. common stock. CVI Investments, Inc. holds 666,667 shares, representing 5.2% of the outstanding stock. Heights Capital Management, Inc., as the investment manager for CVI Investments, Inc., may be deemed to beneficially own these shares. The filing confirms that the shares were not acquired for the purpose of influencing the control of the issuer. This filing is an amendment to previously filed information.