MacOS 10.12.0

macOS 10.12.0 (build 16A323) is the first public release of macOS 10.12 (Sierra) on September 20, 2016 by Apple Inc.

Development history
The first developer beta of macOS 10.12.0 was seeded on June 13 during the 2016 Worldwide Developers Conference. The fifth beta was released on August 9, 2016. Archived 2022-06-13.