| 2011-09-29 | BUREAU OF NATIONAL AFFAIRS INC | U | −787 sh | $39.50 | −$31.1K | 0 |
| 2011-09-29 | BUREAU OF NATIONAL AFFAIRS INC | U | −48.4K sh | $39.50 | −$1.91M | 0 |
| 2010-09-30 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+648 sh | $16.50 | ▲+$10.7K | 47,137 |
| 2010-09-18 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+631 sh | $16.50 | ▲+$10.4K | 47,137 |
| 2010-07-26 | BUREAU OF NATIONAL AFFAIRS INC | D | −10 sh | $16.00 | −$160 | 47,137 |
| 2010-04-01 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+594 sh | $16.00 | ▲+$9,504 | 47,137 |
| 2010-03-20 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+654 sh | $16.00 | ▲+$10.5K | 47,137 |
| 2009-10-01 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+587 sh | $15.75 | ▲+$9,245.25 | 44,620 |
| 2009-09-19 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+664 sh | $15.75 | ▲+$10.5K | 44,620 |
| 2009-04-02 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+544 sh | $15.75 | ▲+$8,568 | 44,620 |
| 2009-03-21 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+646 sh | $15.75 | ▲+$10.2K | 44,620 |
| 2007-12-31 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+472 sh | $15.00 | ▲+$7,080 | 39,827 |
| 2007-09-15 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+1,166 sh | $14.75 | ▲+$17.2K | 39,827 |
| 2007-03-17 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+292 sh | $14.00 | ▲+$4,088 | 39,827 |
| 2006-12-23 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+1,928 sh | $13.75 | ▲+$26.5K | 37,897 |
| 2006-03-18 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+269 sh | $13.00 | ▲+$3,497 | 37,897 |
| 2005-03-30 | BUREAU OF NATIONAL AFFAIRS INC | S | ▼+700 sh | $12.75 | ▼+$8,925 | 34,732 |
| 2004-12-31 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+806 sh | $12.00 | ▲+$9,672 | 33,716 |
| 2004-09-18 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+830 sh | $11.75 | ▲+$9,752.5 | 33,716 |
| 2004-08-16 | BUREAU OF NATIONAL AFFAIRS INC | S | ▼−1,500 sh | $11.75 | ▼−$17.6K | 1,487 |
| 2004-03-20 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+156 sh | $11.25 | ▲+$1,755 | 33,716 |
| 2003-12-31 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+666 sh | $11.25 | ▲+$7,492.5 | 31,924 |
| 2003-09-20 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+828 sh | $11.00 | ▲+$9,108 | 31,924 |
| 2003-03-22 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+200 sh | $10.50 | ▲+$2,100 | 31,924 |