Shearman & Sterling and McDermott Will & Emery have made up two partners apiece in the US  pair's latest partner promotion rounds.

Shearman has promoted London-based arbitration counsel Ximena Herrera-Bernal and project development and finance counsel Anthony Lepereto to partner, as part of its eight-strong global round.

All of the Shearman promotions are concentrated across the firm's London, New York and Washington DC offices.

Last year, the US firm promoted three partners in London out of a global round of 16.

Senior partner David Beveridge said: "Congratulations to this outstanding and diverse group on achieving such a significant career milestone. These lawyers from across our global network are committed to delivering excellent client service."

Meanwhile, McDermott has made up corporate associate Linda Zeman and private client counsel Lynsey McIntyre in its London office.

In total, McDermott has promoted 28 lawyers in its global offices, including five in Shanghai and seven in continental Europe.

McDermott only made up one lawyer in London last year within a 19-strong round.

McDermott chairman Ira Coleman said: "We are tremendously proud of our new partners. They are a talented, passionate and diverse group – representing both the firm's deep experience and path forward."

All of the appointments across both firms will take effect from 1 January 2019.

Shearman & Sterling 2018 appointments in full:

Ximena Herrera-Bernal – arbitration (London)

Tomasz Kulawik – finance (New York and Washington DC)

Grace Lee – litigation (New York)

Anthony Lepere – project development and finance (London)

Derrick Lott – M&A (New York)

Gillian Emmett Moldowan – compensation, governance and ERISA (New York)

Roger Morscheiser – M&A (New York)

Cody Wright – M&A (New York)

McDermott Will & Emery 2019 partner class in full:

Gary Adamson – litigation (New York)

Mimi Alexandre – health (Washington)

Alex An – regulatory (Shanghai)

Vanessa Barmack – corporate (New York)

Ike Chidi – corporate (Los Angeles)

Aymeric Discours – litigation (Paris)

Thomas Gennert – employee benefits and executive compensation (Duesseldorf)

Tala Jayadevan – litigation (Los Angeles)

Brian Jones – intellectual property (Chicago)

Joanna Lin – corporate (Dallas)

Michael Louis – US and international tax (Dallas)

Adam Marks – health (Chicago)

Jacob Mattinson – employee benefits and executive compensation (Chicago)

Lynsey McIntyre – private client (London)

Laura Morelli – intellectual property (Paris)

Chris Mou – litigation (Shanghai)

Katharine O'Connor – regulatory (Chicago)

Fabrice Piollet – corporate (Paris)

Dustin Schwerdtfeger – corporate (Duesseldorf)

Carol Sun – litigation (Shanghai)

Jonathan Ursprung – corporate (Boston)

Rebecca Waltuch – health (Boston)

Norman Wasse – corporate (Frankfurt)

Scott Weinstein – health (Washington)

Simon Weiβ – corporate (Frankfurt)

Wendy Wu – intellectual property (Shanghai)

Linda Zeman – corporate (London)

Roy Zhu – corporate (Shanghai)