On: Twitter kills its San Francisco headquarters, will...

[runako]

Many sources for this, including:

https://www.thestreet.com/technology/elon-musk-has-a-huge-tw... and

https://www.nytimes.com/2022/10/30/technology/elon-musk-twit...

https://www.bloomberg.com/news/articles/2023-05-03/twitter-s...

If you don't like my choice of sources, any popular search engine will help you surface additional sources.