X0306 4 2017-01-04 0000072741 EVERSOURCE ENERGY ES 0001101384 MAY THOMAS J C/O EVERSOURCE ENERGY 300 CADWELL DRIVE SPRINGFIELD MA 01104 1 Chrmn of the Board & Trustee Common Shares, $5.00 par value 2017-01-04 4 S 0 40000 55.2619 D 121842 I May Family Investments LLC Common Shares, $5.00 par value 2017-01-05 4 S 0 40000 55.13 D 81842 I May Family Investments LLC Common Shares, $5.00 par value 2017-01-06 4 S 0 40000 55.1979 D 41842 I May Family Investments LLC Common Shares, $5.00 par value 71148 I 401k Plan Common Shares, $5.00 par value 198093 D Phantom Shares Common Shares, $5.00 par value 52875 52875 D This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 9, 2016. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.95 to $55.59, 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. Represents common shares held by a limited liability company, the members of which consist of the reporting person's spouse and a family trust for the benefit of certain members of the reporting person's family, of which the reporting person's spouse is a trustee. The reporting person disclaims beneficial ownership of these securities. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.80 to $55.38, 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 $54.77 to $55.475, 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. Includes restricted share units and dividend equivalents thereon. 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 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 2017-01-06