| 29 Sept 2011 | TENDER | BUREAU OF NATIONAL AFFAIRS INC | 31,144 | 39.50 USD | |
| 29 Sept 2011 | TENDER | BUREAU OF NATIONAL AFFAIRS INC | 33,259 | 39.50 USD | |
| 19 Mar 2011 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 74 | 17.50 USD | |
| 20 Mar 2010 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 623 | 16.00 USD | |
| 30 Sept 2010 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 415 | 16.50 USD | |
| 26 Jul 2010 | OTHER | BUREAU OF NATIONAL AFFAIRS INC | 87 | 16.00 USD | |
| 01 Apr 2010 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 378 | 16.00 USD | |
| 18 Sept 2010 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 732 | 16.50 USD | |
| 18 Sept 2010 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 79 | 16.50 USD | |
| 20 Mar 2010 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 81 | 16.00 USD | |
| 21 Mar 2009 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 690 | 15.75 USD | |
| 01 Oct 2009 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 370 | 15.75 USD | |
| 19 Sept 2009 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 772 | 15.75 USD | |
| 02 Apr 2009 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 338 | 15.75 USD | |
| 19 Sept 2009 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 82 | 15.75 USD | |
| 21 Mar 2009 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 83 | 15.75 USD | |
| 20 Sept 2008 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 559 | 15.75 USD | |
| 02 Oct 2008 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 325 | 15.75 USD | |
| 15 Mar 2008 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 311 | 15.50 USD | |
| 18 Jun 2008 | OTHER | BUREAU OF NATIONAL AFFAIRS INC | 51 | 15.50 USD | |
| 02 Apr 2008 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 319 | 15.50 USD | |
| 20 Sept 2008 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 82 | 15.75 USD | |
| 15 Mar 2008 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 58 | 15.50 USD | |
| 15 Sept 2007 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 753 | 14.75 USD | |
| 17 Mar 2007 | PURCHASE | BUREAU OF NATIONAL AFFAIRS INC | 228 | 14.00 USD | |