Merger partners LeBoeuf Lamb Greene & MacRae and Dewey Ballantine have unveiled the make-up of the 22-member executive board that will oversee the running of the combined firm when their tie-up goes live on Monday (1 October).

Both London heads of the respective firms -LeBoeuf's Peter Sharpe and Fred Gander of Dewey – have claimed places on the board, which is headed by LeBoeuf chairman Steve Davis.

The make-up of the committee is split evenly between the two firms, with all 11 members of the former LeBoeuf board and all six of the Dewey executive involved.

The majority of the board's members – including former Dewey co-chairmen Morton Pierce and Gordon Warnke – are based in the US, although the European practice will have a significant voice, with six partners on the committee. LeBoeuf City partner Joseph Ferraro is joined by three Dewey Europe-based partners – Milan head Bruno Gatti, Polish chief Lejb Fogelman and German head Hanno Berger.

The board will meet once a month, with the first meeting scheduled in for mid-October.

Notably, Asia misses out on board-level representation. The region has been earmarked by Davis for significant expansion, with launches in Shanghai and Singapore among the options under consideration.

Davis commented: "We are underweight in East Asia and this is an area we will look at in due course. The coverage in Europe is better but we still need to grow our presence, especially in London."

Paul Weiss Rifkind Wharton & Garrison partner Toby Myerson advised on the merger, which will see the Dewey Ballantine partnership formally dissolved and its partners join an amended LeBoeuf structure.

The combined firm will have some 1,300 lawyers, with annual revenues of around $1bn (£496m).