| Date Filed | Type | Description |
| 09/29/2011 |
15-12B
| Form 15-12B - Securities registration termination [Section 12(b)] |
| 09/28/2011 |
8-K
| Quarterly results |
| 09/22/2011 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 09/22/2011 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 09/22/2011 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 09/22/2011 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 09/22/2011 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 09/22/2011 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 09/22/2011 |
POSASR
| Form POSASR - Post-effective Amendment to an automatic shelf registration statement |
| 09/21/2011 |
8-K
| Completion of Acquisition or Disposition of Assets, Creation of a Direct Financial Obligation or an Obligation under an Off-B... |
| 09/19/2011 |
SC 13D/A
| Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend] |
| 09/19/2011 |
25-NSE
| Form 25-NSE - Notification filed by national security exchange to report the removal from listing and registration of matured, redeemed or retired securities |
| 09/14/2011 |
8-K
| Other Events, Financial Statements and Exhibits |
| 09/09/2011 |
8-K
| Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements... |
| 08/25/2011 |
SC 13D/A
| Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend] |
| 08/05/2011 |
10-Q
| Quarterly Report for the period ended June 30, 2011 |
| 07/27/2011 |
8-K
| Quarterly results |
| 07/01/2011 |
8-K
| Other Events, Financial Statements and Exhibits |
| 06/30/2011 |
SC 13D
| Form SC 13D - General statement of acquisition of beneficial ownership: |
| 06/28/2011 |
11-K
| Form 11-K - Annual report of employee stock purchase, savings and similar plans |
| 06/20/2011 |
8-K
| Form 8-K - Current report |
| 06/09/2011 |
8-K
| Submission of Matters to a Vote of Security Holders, Other Events, Financial Statements and Exhibits |
| 06/09/2011 |
BW
| Lubrizol Shareholders Overwhelmingly Approve Acquisition by Berkshire Hathaway |
| 05/09/2011 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material: |
| 05/06/2011 |
10-Q
| Quarterly Report for the period ended March 31, 2011 |
| 05/05/2011 |
DEFM14A
| Form DEFM14A - Definitive proxy statement relating to merger or acquisition |
| 04/28/2011 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 04/28/2011 |
8-K
| Form 8-K - Current report |
| 04/28/2011 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material |
| 04/26/2011 |
8-K
| Other Events, Financial Statements and Exhibits |
| 04/26/2011 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material |
| 04/18/2011 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material |
| 04/11/2011 |
PRER14A
| Form PRER14A - Preliminary Proxy Soliciting materials |
| 04/07/2011 |
8-K
| Other Events, Financial Statements and Exhibits |
|