X0202 4/A 2006-08-10 2006-08-14 0 0001062379 KEYSPAN CORP KSE 0001260721 DRYER LAWRENCE S ONE METROTECH CENTER BROOKLYN NY 11201 0 1 0 0 Executive Officer Common Stock 2006-08-10 4 M 0 5000 32.66 A 9695 D Common Stock 2006-08-10 4 S 0 5000 40.541 D 4695 D Common Stock 2006-08-10 4 M 0 2640 32.40 A 7335 D Common Stock 2006-08-10 4 S 0 2640 40.549 D 4695 D Employee Stock Option 32.66 2006-08-10 4 M 0 5000 32.66 D 2012-02-29 Common Stock 5000 55718 D Employee Stock Option 32.40 2006-08-10 4 M 0 2640 32.40 D 2013-03-04 Common Stock 2640 53078 D The Form 4 previously filed on August 14, 2006 on behalf of the reporting person incorrectly indicated Securities Acquired rather than Securities Disposed, which is now correctly reflected in this amendment. The options vest ratably over a five year period commencing March 1, 2002. The options vest ratably over a five year period commencing March 5, 2003. /s/Alfred C. Bereche, as Attorney in Fact 2006-08-16