 SAN JOSE, Calif.--BUSINESS WIRE--Summit Wireless Technologies, Inc. NASDAQ: WISA, a leading provider of immersive, wireless sound technology for intelligent devices and next-generation home entertainment systems, provided an update for the fourth quarter ended December 31, 2020. Q4 2020 Financial Highlights: Revenue increased 141 to over 1.0 million, compared to 430,000 in the fourth quarter of 2019. Gross margin expanded to 24, compared to 17 in the third quarter of 2020. Cash and cas 