 PALO ALTO, Calif. LOVELAND, Colo.--BUSINESS WIRE--GigCapital3, Inc. GigCapital3 NYSE: GIK announced today that the U.S. Securities and Exchange Commission the SEC, has declared effective its Registration Statement on Form S-4 as amended, the Registration Statement, which includes a definitive proxy statementprospectus in connection with GigCapital3s special meeting of stockholders the Special Meeting to consider the previously announced proposed business combination with 