| Feb 8, 2019 AForm 4 → | Feb 11, 4:11 pm EST | BROOKS AUTOMATION INCBRKS | 4,033 | — | — | 79,296 | — | plan? |
| Jan 2, 2019 MForm 4 → | Jan 4, 4:00 pm EST | LKQ CORPLKQ | 60,000 | $5.98 | $358,650 | 257,228 | — | plan? |
| Nov 29, 2018 GForm 4 → | Dec 3, 5:13 pm EST | BROOKS AUTOMATION INCBRKS | 300 | — | — | 75,263 | — | plan? |
| Aug 8, 2018 GForm 4 → | Dec 6, 6:04 pm EST | COLLECTORS UNIVERSE INCCLCT | 11,405 | — | — | 64,423 | — | plan? late |
| May 29, 2018 GForm 4 → | Jul 19, 5:08 pm EDT | COLLECTORS UNIVERSE INCCLCT | 6,250 | — | — | 75,828 | — | plan? late |
| May 7, 2018 AForm 4 → | May 9, 3:00 pm EDT | LKQ CORPLKQ | 3,770 | — | — | 197,228 | — | plan? |
| May 1, 2018 SForm 4 → | May 3, 4:30 pm EDT | COLLECTORS UNIVERSE INCCLCT | 11,000 | $15.51 | $170,600 | 82,006 | −11.8% | plan? |
| Apr 9, 2018 SForm 4 → | Apr 11, 4:30 pm EDT | COLLECTORS UNIVERSE INCCLCT | 11,000 | $16.13 | $177,375 | 93,006 | −10.6% | plan? |
| Mar 22, 2018 GForm 4 → | Apr 11, 4:30 pm EDT | COLLECTORS UNIVERSE INCCLCT | 200 | — | — | 103,871 | — | plan? late |
| Feb 26, 2018 GForm 4 → | Mar 12, 6:51 pm EDT | LKQ CORPLKQ | 200 | — | — | 193,458 | — | plan? late |
| Feb 23, 2018 SForm 4 → | Feb 26, 4:30 pm EST | COLLECTORS UNIVERSE INCCLCT | 30,000 | $16.24 | $487,290 | 104,071 | −22.4% | plan? |
| Feb 9, 2018 GForm 4 → | Feb 21, 6:00 pm EST | COLLECTORS UNIVERSE INCCLCT | 100 | — | — | 134,071 | — | plan? late |
| Feb 6, 2018 AForm 4 → | Feb 8, 4:10 pm EST | BROOKS AUTOMATION INCBRKS | 3,565 | — | — | 75,563 | — | plan? |
| Jan 10, 2018 GForm 4 → | Jan 11, 4:09 pm EST | BROOKS AUTOMATION INCBRKS | 50 | — | — | 71,998 | — | plan? |
| Dec 14, 2017 GForm 4 → | Dec 14, 4:19 pm EST | BROOKS AUTOMATION INCBRKS | 300 | — | — | 72,048 | — | plan? |
| Aug 24, 2017 SForm 4/A → | Aug 29, 4:35 pm EDT | LKQ CORPLKQ | 16,000 | $33.92 | $542,755 | 23,300 | −40.7% | plan? |
| Aug 24, 2017 SForm 4 → | Aug 25, 6:00 pm EDT | LKQ CORPLKQ | 16,000 | $32.92 | $526,755 | 23,300 | −40.7% | plan? amended |
| May 18, 2017 GForm 5 → | Mar 12, 2018, 4:00 pm EDT | LKQ CORPLKQ | 2,425 | — | — | 193,658 | — | plan? |
| May 8, 2017 AForm 4 → | May 10, 5:00 pm EDT | LKQ CORPLKQ | 3,662 | — | — | 196,083 | — | plan? |
| Apr 28, 2017 SForm 4 → | May 2, 6:00 pm EDT | LKQ CORPLKQ | 50,000 | $31.27 | $1,563,695 | 192,421 | −20.6% | plan? |
| Feb 14, 2017 AGForm 4 → | Dec 7, 4:31 pm EST | COLLECTORS UNIVERSE INCCLCT | 8,155 | — | — | 134,171 | — | plan? late |
| Feb 8, 2017 AForm 4 → | Feb 10, 4:24 pm EST | BROOKS AUTOMATION INCBRKS | 4,355 | — | — | 72,348 | — | plan? |
| Jan 5, 2017 GForm 4 → | Jan 5, 4:08 pm EST | BROOKS AUTOMATION INCBRKS | 200 | — | — | 67,993 | — | plan? |
| Dec 21, 2016 GForm 4 → | Dec 23, 7:51 am EST | BROOKS AUTOMATION INCBRKS | 600 | — | — | 68,193 | — | plan? |
| Dec 20, 2016 SForm 4 → | Dec 22, 5:00 pm EST | LKQ CORPLKQ | 30,000 | $31.98 | $959,460 | 245,846 | −10.9% | plan? |
| Dec 6, 2016 AForm 4 → | Dec 8, 4:01 pm EST | COLLECTORS UNIVERSE INCCLCT | 2,149 | — | — | 134,812 | — | plan? |
| Dec 2, 2016 GForm 4 → | Dec 22, 5:00 pm EST | LKQ CORPLKQ | 4,125 | — | — | 242,421 | — | plan? late |
| Oct 12, 2016 GForm 4 → | Oct 13, 4:13 pm EDT | BROOKS AUTOMATION INCBRKS | 100 | — | — | 68,793 | — | plan? |
| Aug 29, 2016 GForm 4 → | Sep 21, 1:19 pm EDT | COLLECTORS UNIVERSE INCCLCT | 5,300 | — | — | 132,663 | — | plan? late |
| Aug 3, 2016 GForm 4 → | Aug 4, 4:07 pm EDT | BROOKS AUTOMATION INCBRKS | 100 | — | — | 68,893 | — | plan? |
| Jul 19, 2016 GForm 4 → | Jul 21, 4:16 pm EDT | BROOKS AUTOMATION INCBRKS | 100 | — | — | 68,993 | — | plan? |
| May 11, 2016 GMForm 4 → | Sep 28, 9:05 pm EDT | LKQ CORPLKQ | 83,160 | $5.38 | $430,200 | 276,546 | — | plan? late |
| May 2, 2016 AForm 4 → | May 4, 6:00 pm EDT | LKQ CORPLKQ | 3,407 | — | — | 202,706 | — | plan? |
| Mar 7, 2016 PForm 4 → | Mar 9, 8:00 am EST | LKQ CORPLKQ | 3,000 | $30.09 | $90,261 | 199,299 | +1.53% | plan? |
| Feb 18, 2016 GForm 4 → | May 20, 6:05 am EDT | COLLECTORS UNIVERSE INCCLCT | 100 | — | — | 137,963 | — | plan? late |
| Feb 10, 2016 PForm 4 → | Feb 11, 4:31 pm EST | BROOKS AUTOMATION INCBRKS | 20,000 | $8.74 | $174,800 | 18,700 | — | plan? |
| Feb 2, 2016 AForm 4 → | Feb 4, 3:42 pm EST | BROOKS AUTOMATION INCBRKS | 8,520 | — | — | 59,093 | — | plan? |
| Jan 4, 2016 GForm 4 → | Jan 6, 4:25 pm EST | BROOKS AUTOMATION INCBRKS | 200 | — | — | 50,573 | — | plan? |
| Dec 15, 2015 GForm 4 → | Dec 17, 4:46 pm EST | BROOKS AUTOMATION INCBRKS | 4,500 | — | — | 50,773 | — | plan? |
| Dec 7, 2015 AForm 4 → | Dec 10, 4:30 pm EST | COLLECTORS UNIVERSE INCCLCT | 2,705 | — | — | 138,063 | — | plan? late |
| Oct 15, 2015 GForm 4 → | Oct 19, 4:47 pm EDT | BROOKS AUTOMATION INCBRKS | 500 | — | — | 55,273 | — | plan? |
| Sep 15, 2015 AForm 4 → | Sep 17, 4:24 pm EDT | PSYCHEMEDICS CORPPMD | 1,000 | — | — | 1,280 | — | plan? |
| Aug 11, 2015 GForm 4/A → | Sep 23, 4:31 pm EDT | BROOKS AUTOMATION INCBRKS | 1,100 | — | — | 55,673 | — | plan? |
| Aug 11, 2015 GForm 4 → | Aug 13, 3:56 pm EDT | BROOKS AUTOMATION INCBRKS | 550 | — | — | 56,323 | — | plan? amended |
| Jul 22, 2015 GForm 4 → | Jul 27, 2:41 pm EDT | BROOKS AUTOMATION INCBRKS | 300 | — | — | 56,873 | — | plan? late |
| Jul 16, 2015 GForm 4 → | Jul 20, 2:05 pm EDT | BROOKS AUTOMATION INCBRKS | 100 | — | — | 57,173 | — | plan? |
| Jul 9, 2015 GForm 4 → | Mar 9, 2016, 8:00 am EST | LKQ CORPLKQ | 3,275 | — | — | 196,299 | — | plan? late |
| Jun 18, 2015 GForm 4 → | Jun 22, 11:25 am EDT | BROOKS AUTOMATION INCBRKS | 1,150 | — | — | 57,273 | — | plan? |
| Mar 5, 2015 PForm 4 → | Mar 9, 4:30 pm EDT | COLLECTORS UNIVERSE INCCLCT | 5,000 | $22.99 | $114,966 | 135,358 | +3.84% | plan? |
| Mar 3, 2015 PForm 4 → | Mar 5, 4:35 pm EST | COLLECTORS UNIVERSE INCCLCT | 10,000 | $22.75 | $227,454 | 130,358 | +8.31% | plan? |
| Feb 25, 2015 AGForm 4 → | May 18, 6:00 am EDT | LKQ CORPLKQ | 4,723 | — | — | 199,574 | — | plan? late |
| Feb 13, 2015 GForm 4 → | Feb 17, 4:41 pm EST | BROOKS AUTOMATION INCBRKS | 100 | — | — | 58,423 | — | plan? |
| Feb 10, 2015 AForm 4 → | Feb 12, 5:22 pm EST | BROOKS AUTOMATION INCBRKS | 6,569 | — | — | 58,523 | — | plan? |
| Jan 6, 2015 GForm 4 → | Jan 7, 1:50 pm EST | BROOKS AUTOMATION INCBRKS | 200 | — | — | 51,954 | — | plan? |
| Dec 16, 2014 GForm 4 → | Jan 5, 2015, 4:30 pm EST | COLLECTORS UNIVERSE INCCLCT | 300 | — | — | 120,358 | — | plan? late |
| Jun 12, 2014 GForm 5 → | Feb 12, 2015, 4:39 pm EST | LKQ CORPLKQ | 6,650 | — | — | 197,051 | — | plan? |