Note 9 Significant shareholders

Investor AB, Sweden, held 182,030,142 and 179,030,142 ABB Ltd shares as of December 31, 2012 and 2011, respectively. These holdings represent 7.9 percent and 7.7 percent of ABB Ltd’s total share capital and voting rights as registered in the Commercial Register on December 31, 2012 and 2011, respectively.

Pursuant to its disclosure notice, BlackRock, Inc., USA, disclosed that, as per July 25, 2011, it, together with its direct and indirect subsidiaries, held 69,702,100 ABB Ltd shares. These holdings correspond to 3.0 percent of ABB Ltd’s total share capital and voting rights as registered in the Commercial Register on December 31, 2012 and 2011, respectively.

To the best of the Company’s knowledge, no other shareholder holds 3 percent or more of the total share capital and voting rights on December 31, 2012 and 2011, respectively.