X0303 4 2010-03-03 0 0001050915 QUANTA SERVICES INC PWR 0001079430 COLSON JOHN R 1360 POST OAK BLVD., SUITE 2100 HOUSTON TX 77056-3023 1 1 0 0 Chief Executive Officer Common Stock 2010-03-03 4 S 0 2100 19.00 D 1392252 D Common Stock 2010-03-03 4 S 0 1400 19.01 D 1390852 D Common Stock 2010-03-03 4 S 0 1200 19.02 D 1389652 D Common Stock 2010-03-03 4 S 0 700 19.03 D 1388952 D Common Stock 2010-03-03 4 S 0 700 19.04 D 1388252 D Common Stock 2010-03-03 4 S 0 1300 19.05 D 1386952 D Common Stock 2010-03-03 4 S 0 500 19.06 D 1386452 D Common Stock 2010-03-03 4 S 0 1200 19.07 D 1385252 D Common Stock 2010-03-03 4 S 0 1300 19.08 D 1383952 D Common Stock 2010-03-03 4 S 0 2600 19.10 D 1381352 D Common Stock 2010-03-03 4 S 0 2800 19.11 D 1378552 D Common Stock 2010-03-03 4 S 0 4100 19.12 D 1374452 D Common Stock 2010-03-03 4 S 0 4100 19.13 D 1370352 D Common Stock 2010-03-03 4 S 0 3300 19.14 D 1367052 D Common Stock 2010-03-03 4 S 0 13300 19.15 D 1353752 D Common Stock 2010-03-03 4 S 0 9600 19.16 D 1344152 D Common Stock 2010-03-03 4 S 0 4600 19.17 D 1339552 D Common Stock 2010-03-03 4 S 0 800 19.18 D 1338752 D Common Stock 2010-03-03 4 S 0 7200 19.19 D 1331552 D Common Stock 2010-03-03 4 S 0 1900 19.20 D 1329652 D Common Stock 2010-03-03 4 S 0 1200 19.21 D 1328452 D Common Stock 2010-03-03 4 S 0 1100 19.22 D 1327352 D Common Stock 2010-03-03 4 S 0 3600 19.23 D 1323752 D Common Stock 2010-03-03 4 S 0 1800 19.24 D 1321952 D Common Stock 2010-03-03 4 S 0 5900 19.25 D 1316052 D Common Stock 2010-03-03 4 S 0 1600 19.26 D 1314452 D Common Stock 2010-03-03 4 S 0 600 19.27 D 1313852 D Common Stock 2010-03-03 4 S 0 700 19.28 D 1313152 D Common Stock 2010-03-03 4 S 0 400 19.29 D 1312752 D /s/ John R. Colson 2010-03-04