X0101 4 2003-05-09 0 0001062379 KEYSPAN CORP KSE 0001195021 PULEO LENORE F 0 1 0 0 Executive Officer Common Stock 2003-05-09 4 M 0 77334 22.50 A 92365 D Common Stock 2003-05-09 4 S 0 77334 33.95 D 15031 D Common Stock 2003-05-09 4 M 0 15000 27.0625 A 30031 D Common Stock 2003-05-09 4 S 0 15000 33.95 D 15031 D Common Stock 2003-05-09 4 M 0 5667 27.75 A 20698 D Common Stock 2003-05-09 4 S 0 5667 33.95 D 15031 D Common Stock 2003-05-09 4 M 0 6900 22.50 A 21931 D Common Stock 2003-05-09 4 S 0 4952 33.95 D 16979 D Employee Stock Option (Right to Buy) 22.50 2003-05-09 4 M 0 77334 22.50 D 2001-01-20 2010-01-19 Common Stock 77334 323672 D Employee Stock Option (Right to Buy) 27.0625 2003-05-09 4 M 0 15000 27.0625 D 2000-05-20 2009-05-19 Common Stock 15000 308672 D Employee Stock Option (Right to Buy) 27.75 2003-05-09 4 M 0 5667 27.75 D 1999-08-13 2008-08-12 Common Stock 5667 303005 D Employee Stock Option (Right to Buy) 22.50 2003-05-09 4 M 0 6900 22.50 D 2001-01-20 2010-01-19 Common Stock 6900 296105 D (1) The options vested ratably over a three year period begininng 1/20/01 (2) The options vested ratably over a three year period beginning 5/20/00 (3) The options vested on 8/13/99 /s/Colleen A. Meade, as Attorney-in-Fact 2003-05-13