X0306 4/A 2012-10-17 2012-10-19 0000072741 NORTHEAST UTILITIES NU 0001101384 MAY THOMAS J C/O NORTHEAST UTILITIES ONE FEDERAL STREET, BUILDING 111-4 SPRINGFIELD MA 01105 1 President, CEO & Trustee Common Shares, $5.00 par value 2012-10-17 4 M 0 262400 18.45 A 632136 D Common Shares, $5.00 par value 2012-10-17 4 M 0 73682 22.57 A 705818 D Common Shares, $5.00 par value 2012-10-17 4 S 0 336082 39.5604 D 369736 D Common Shares, $5.00 par value 2012-10-18 4 M 0 188718 22.57 A 558454 D Common Shares, $5.00 par value 2012-10-18 4 S 0 188718 39.5231 D 369736 D Common Shares, $5.00 par value 61190 I 401k Plan Employee Stock Option (Right to Buy) 18.45 2012-10-17 4 M 0 262400 0 D 2007-04-28 2014-04-28 Common Shares, $5.00 par value 262400 0 D Employee Stock Option (Right to Buy) 22.57 2012-10-17 4 M 0 73682 0 D 2008-06-09 2015-06-09 Common Shares, $5.00 par value 73682 188718 D Employee Stock Option (Right to Buy) 22.57 2012-10-18 4 M 0 188718 0 D 2008-06-09 2015-06-09 Common Shares, $5.00 par value 188718 0 D Phantom Shares Common Shares, $5.00 par value 818977 818977 D This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 4, 2012. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $39.50 to $39.72, inclusive. The reporting person undertakes to provide Northeast Utilities, any security holder of Northeast Utilities, or the staff of the Securities and Exchange Commission, upon request, full information regarding number of shares sold at each separate price within the ranges set forth in footnotes (2) and (3) to this Form 4. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $39.50 to $39.58, inclusive. Phantom shares held in the NSTAR Deferred Compensation Plan. Each phantom share represents the right to receive the cash value of one Common Share upon a distribution event, following vesting. Additional phantom shares are issued upon the automatic reinvestment of dividend-equivalents exempt from the line item reporting under SEC Rule 16a-11. Gregory B. Butler, attorney-in-fact for Mr. May 2012-10-19