X0306 4 2015-08-19 0000072741 EVERSOURCE ENERGY ES 0001101384 MAY THOMAS J C/O EVERSOURCE ENERGY 300 CADWELL DRIVE SPRINGFIELD MA 01104 1 1 Chrmn of Bd, President & CEO Trustee Common Shares, $5.00 par value 2015-08-19 4 M 0 174496 26.90 A 515729 D Common Shares, $5.00 par value 2015-08-19 4 S 0 174496 51.3445 D 341233 D Common Shares, $5.00 par value 2015-08-20 4 S 0 17410 52.04 D 323823 D Common Shares, $5.00 par value 67403 I 401k Plan Employee Stock Option (Right to Buy) 26.90 2015-08-19 4 M 0 174496 0 D 2013-01-28 2020-01-28 Common Shares, $5.00 par value 174496 0 D Phantom Shares Common Shares, $5.00 par value 899930 899930 D Includes restricted share units and dividend equivalents thereon. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2015. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.02 to $51.72, inclusive. The reporting person undertakes to provide Eversource Energy, any security holder of Eversource Energy, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $52.00 to $52.14, inclusive. The reporting person undertakes to provide Eversource Energy, any security holder of Eversource Energy, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. Shares held in trust under the Eversource 401k Plan, a qualified plan, according to information supplied by the Plan's record keeper. Reporting Person's deferred compensation under the Eversource Deferred Compensation Plan, a non-qualified deferred compensation plan, that is nominally invested as common shares. Each phantom share represents the right to receive the cash value of one Eversource Energy common share upon a distribution event, following vesting. Additional phantom shares are issued upon the automatic reinvestment of dividend-equivalents exempt from line item reporting under SEC Rule 16a-11. /s/ Kerry J. Tomasevich, attorney-in-fact for Mr. May 2015-08-21