X0202 4 2004-12-10 0000105634 EMCOR GROUP INC EME 0001160599 MACINNIS FRANK T 301 MERRITT SEVEN NORWALK CT 06851 1 1 0 0 Chairman & CEO Common Stock 2004-12-10 4 M 0 34283 4.75 A 98978 D Common Stock 2004-12-10 4 S 0 2000 42.50 D 96978 D Common Stock 2004-12-10 4 S 0 1000 42.51 D 95978 D Common Stock 2004-12-10 4 S 0 1500 42.70 D 94478 D Common Stock 2004-12-10 4 S 0 500 42.72 D 93978 D Common Stock 2004-12-10 4 S 0 1000 42.80 D 92978 D Common Stock 2004-12-10 4 S 0 500 42.90 D 92478 D Common Stock 2004-12-10 4 S 0 1000 43.00 D 91478 D Common Stock 2004-12-10 4 S 0 4000 43.30 D 87478 D Common Stock 2004-12-10 4 S 0 1000 43.35 D 86478 D Common Stock 2004-12-10 4 S 0 2000 43.12 D 84478 D Common Stock 2004-12-10 4 S 0 1000 43.70 D 83478 D Common Stock 2004-12-10 4 S 0 1000 43.90 D 82478 D Common Stock 2004-12-10 4 S 0 100 43.93 D 82378 D Common Stock 2004-12-10 4 S 0 1000 43.96 D 81378 D Common Stock 2004-12-10 4 S 0 1400 43.97 D 79978 D Common Stock 2004-12-10 4 S 0 1000 44.00 D 78978 D Employee Stock Options (right to buy) 4.75 2004-12-10 4 M 0 34283 0 D 1998-04-05 2005-04-04 Common Stock 34283 155717 D Derivative security is an employee stock option. The option became exercisable in three equal installments on April 5, 1996, April 5, 1997, and April 5, 1998. Frank T. MacInnis 2004-12-13