ABB Ltd

Report Publication Announcement • May 22, 2017

ZURICH, SWITZERLAND, MAY 22, 2017

ABB to propose KPMG as external auditor from 2018

ABB announced today that its Board intends to appoint KPMG as its external auditor effective for the financial year 2018. This decision was taken following a year-long comprehensive external auditor tender process initiated in 2016 in line with international good governance practices. The proposal is subject to shareholder approval at ABB's 2018 Annual General Meeting.

Ernst & Young has been ABB's sole external auditors since 2001 and ABB's Board would like to thank the firm and its auditors for their contribution and dedication over the years. Ernst & Young will audit ABB for fiscal year 2017 as approved at ABB's recent Annual General Meeting.

ABB looks forward to a constructive and professional relationship with KPMG in the future.

ABB (ABBN: SIX Swiss Ex) is a pioneering technology leader in electrification products, robotics and motion, industrial automation and power grids, serving customers in utilities, industry and transport & infrastructure globally. Continuing a more than 125-year history of innovation, ABB today is writing the future of industrial digitalization and driving the Energy and Fourth Industrial Revolutions. ABB operates in more than 100 countries with about 132,000 employees. www.abb.com

For more information, please contact:

Media Relations Investor Relations ABB Ltd Phone: +41 43 317 65 68 Phone: +41 43 317 71 11 Affolternstrasse 44 Email: media.relations@ch.abb.com Email: investor.relations@ch.abb.com 8050 Zurich

Switzerland