Company:  NL INDUSTRIES INC (NL)
Form Type:  4
Filing Date:  9/22/2011 
CIK:  0000072162 
Address:  5430 LBJ FREEWAY
SUITE 1700
 
City, State, Zip:  DALLAS, Texas 75240-2697 
Telephone:  972-233-1700 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$11.71  
Change: 
0.06 (0.52%)  
Trade Time: 
May 24  
Market Cap: 
$569.91M
Description of Business
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  FORM 4
    NAME AND TITLE
    NON DERIVATIVE SECURITIES
    DERIVATIVE SECURITIES
    EXPLANATIONS AND REMARKS
    REPORTING OWNERS
    SIGNATURES
  EXHIBIT 99