Weil Gotshal & Manges and US technology firm Fenwick & West are advising on Facebook’s $16bn (£9.6bn) acquisition of mobile messaging company WhatsApp.

The deal includes $4bn in cash and approximately $12bn in Facebook shares. WhatsApp’s founders and employees will get $3bn (£1.8bn) of the shares as restricted stock that will vest over four years after the deal closes.