0000899243-01-501832 8-K 2 20011118 5 7 20011119 QUANTA SERVICES INC 0001050915 1731 742851603 DE 1231 8-K 34 001-13831 1795524 1360 POST OAK BLVD SUITE 2100 HOUSTON TX 77056 7133506000 1360 POST OAK BLVD SUITE 2100 HOUSTON TX 77056 8-K 1 d8k.txt CURRENT REPORT EX-4.7 3 dex47.txt AMENDMENT NO. 1 TO RIGHTS AGMT.