Investor Relations

Notice to Stockholders of Power-One Common Stock:

On July 25, 2013 ABB (NYSE:ABB) completed the acquisition of Power-One, Inc. (Nasdaq:PWER) for $6.35 per share or approximately $1 billion in equity value. As a result of the transaction, Power-One common shares have ceased trading on Nasdaq. As defined in the merger agreement, immediately upon closing, each outstanding share of Power-One common stock was converted into the right to receive $6.35 in cash, payable to the holder thereof. As a result, payment was made by ABB or its Paying Agent (American Stock Transfer & Trust Company) directly into the account of stockholders of record whose shares are held electronically (book entry) or in street name by their broker for the cash value of their liquidated shares.

If you are a stockholder of Power-One and have stock certificates in your possession, you should be contacted by American Stock Transfer & Trust Company with instructions as to how to exchange your certificates for cash. If you have any questions, please contact American Stock Transfer & Trust Company at (800) 937-5449 for assistance.

ABB Investor Center