0001021408-01-510450 8-K 3 20011115 5 7 20011116 NORTHROP GRUMMAN CORP /DE/ 0001133421 3812 954840775 DE 1231 8-K 34 001-16411 1794570 1840 CENTURY PK E C/O NORTHROP GRUMMAN CORP LOS ANGELES CA 90067 3105536262 1840 CENTURY PARK EAST C/O NORTHROP GRUMMAN CORP LOS ANGELES CA 90067 NNG INC 20010129 8-K 1 d8k.txt FORM 8-K EX-1.1 3 dex11.txt UNDERWRITING AGREEMENT EX-8.1 4 dex81.txt TAX OPINION OF SHEPPARD MULLIN