| 2014-11-13 | AMERICAN SCIENCE & ENGINEERING, INC. | P | ▲+1,000 sh | $44.97 | ▲+$45K | 4,099 |
| 2014-09-08 | AMERICAN SCIENCE & ENGINEERING, INC. | A | +2,819 sh | — | — | 3,099 |
| 2013-11-27 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−100 sh | $71.07 | ▼−$7,107 | 4,702 |
| 2013-11-22 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−1,000 sh | $70.00 | ▼−$70K | 3,155 |
| 2013-11-12 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−1,000 sh | $68.00 | ▼−$68K | 4,155 |
| 2013-10-25 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−1,000 sh | $66.00 | ▼−$66K | 6,155 |
| 2013-10-21 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−1,000 sh | $64.00 | ▼−$64K | 5,155 |
| 2013-10-11 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−1,000 sh | $62.00 | ▼−$62K | 7,155 |
| 2013-09-13 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−1,400 sh | $56.60 | ▼−$79.2K | 4,802 |
| 2013-09-04 | AMERICAN SCIENCE & ENGINEERING, INC. | A | +2,875 sh | — | — | 10,855 |
| 2013-02-22 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−750 sh | $63.98 | ▼−$48K | 7,980 |
| 2013-02-22 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−750 sh | $63.98 | ▼−$48K | 3,502 |
| 2013-02-20 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−2,000 sh | $62.88 | ▼−$126K | 4,252 |
| 2013-02-20 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−1,000 sh | $62.88 | ▼−$62.9K | 8,730 |
| 2013-02-14 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−2,000 sh | $64.18 | ▼−$128K | 6,252 |
| 2012-09-06 | AMERICAN SCIENCE & ENGINEERING, INC. | A | +2,700 sh | — | — | 9,730 |
| 2011-09-08 | AMERICAN SCIENCE & ENGINEERING, INC. | A | +2,602 sh | — | — | 15,452 |
| 2011-05-31 | AMERICAN SCIENCE & ENGINEERING, INC. | M | +10K sh | $62.50 | +$625K | 20,225 |
| 2011-05-31 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−10K sh | $85.93 | ▼−$859K | 10,225 |
| 2011-05-31 | AMERICAN SCIENCE & ENGINEERING, INC. | M | −10K sh | — | — | 0 |
| 2011-02-22 | AMERICAN SCIENCE & ENGINEERING, INC. | M | −3,500 sh | — | — | 0 |
| 2011-02-22 | AMERICAN SCIENCE & ENGINEERING, INC. | M | +3,500 sh | $47.47 | +$166K | 13,725 |
| 2011-02-22 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−3,500 sh | $90.89 | ▼−$318K | 10,225 |
| 2011-02-11 | AMERICAN SCIENCE & ENGINEERING, INC. | M | +3,500 sh | $47.47 | +$166K | 17,225 |
| 2011-02-11 | AMERICAN SCIENCE & ENGINEERING, INC. | M | −3,500 sh | — | — | 3,500 |
| 2011-02-11 | AMERICAN SCIENCE & ENGINEERING, INC. | M | −3,500 sh | — | — | 0 |
| 2011-02-11 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−7,000 sh | $89.97 | ▼−$630K | 10,225 |
| 2011-02-11 | AMERICAN SCIENCE & ENGINEERING, INC. | M | +3,500 sh | $28.50 | +$99.8K | 13,725 |
| 2011-01-10 | AMERICAN SCIENCE & ENGINEERING, INC. | A | +528 sh | — | — | 10,225 |
| 2010-11-12 | AMERICAN SCIENCE & ENGINEERING, INC. | M | −3,500 sh | $28.50 | −$99.8K | 55,358 |
| 2010-11-12 | AMERICAN SCIENCE & ENGINEERING, INC. | M | +2,520 sh | $15.50 | +$39.1K | 12,217 |
| 2010-11-12 | AMERICAN SCIENCE & ENGINEERING, INC. | M | +3,500 sh | $28.50 | +$99.8K | 15,717 |
| 2010-11-12 | AMERICAN SCIENCE & ENGINEERING, INC. | S | ▼−6,020 sh | $82.69 | ▼−$498K | 9,697 |
| 2010-11-12 | AMERICAN SCIENCE & ENGINEERING, INC. | M | −2,520 sh | $15.50 | −$39.1K | 58,858 |
| 2010-09-09 | AMERICAN SCIENCE & ENGINEERING, INC. | A | +10K sh | $74.79 | +$748K | 61,378 |
| 2010-01-10 | AMERICAN SCIENCE & ENGINEERING, INC. | A | +539 sh | $83.53 | +$45K | 9,697 |
| 2009-09-10 | AMERICAN SCIENCE & ENGINEERING, INC. | A | +10K sh | $62.50 | +$625K | 51,378 |
| 2009-01-10 | AMERICAN SCIENCE & ENGINEERING, INC. | A | +595 sh | $75.67 | +$45K | 9,158 |
| 2008-09-11 | AMERICAN SCIENCE & ENGINEERING, INC. | A | +10K sh | $67.98 | +$680K | 40,520 |
| 2007-09-13 | AMERICAN SCIENCE & ENGINEERING, INC. | A | +7,000 sh | $63.71 | +$446K | 23,520 |
| 2006-02-10 | AMERICAN SCIENCE & ENGINEERING, INC. | P | ▲+2,000 sh | $65.25 | ▲+$131K | 12,850 |
| 2005-02-25 | AMERICAN SCIENCE & ENGINEERING, INC. | P | ▲+500 sh | $43.70 | ▲+$21.9K | 2,809 |
| 2005-01-10 | AMERICAN SCIENCE & ENGINEERING, INC. | A | +869 sh | $34.52 | +$30K | 2,309 |
| 2004-09-16 | AMERICAN SCIENCE & ENGINEERING, INC. | A | +7,000 sh | $28.50 | +$200K | 7,000 |