SCHLEIFER MARK A Insider Trading
Get the latest insider transactions of SCHLEIFER MARK A. SCHLEIFER MARK A is VP of IP Engineering in COGENT COMMUNICATIONS HOLDINGS, INC. ($COI). Discover the current value of SCHLEIFER MARK A shares.
Address: 1015 31ST ST., NW WASHINGTON 20007DC
SCHLEIFER MARK A is Insider in these Companies
| Ticker | Company Name | Current and Previous Positions | Total Shares | Current Value ($) |
|---|---|---|---|---|
| COI | COGENT COMMUNICATIONS HOLDINGS, INC. | VP of IP Engineering | 0 | 0.00 |
Insider Trading Transactions of SCHLEIFER MARK A
| Date | Ticker | Company | Owner | Relationship | Transaction | Cost ($) | Shares | Transaction Value ($) | Total Shares |
|---|---|---|---|---|---|---|---|---|---|
| Dec 05 2011 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 0.00 | 33,650 | 0 | 0 |
| Dec 05 2011 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 4.88 | 3,125 | 15,250 | 3,125 |
| Dec 05 2011 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 16.58 | 3,125 | 51,813 | 0 |
| Dec 05 2011 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 4.88 | 3,125 | 15,250 | 0 |
| Oct 17 2011 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 14.90 | 3,000 | 44,710 | 33,650 |
| Oct 03 2011 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 13.27 | 1,250 | 16,590 | 36,650 |
| Jul 15 2011 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 16.69 | 3,000 | 50,077 | 37,900 |
| Jul 01 2011 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 16.83 | 1,250 | 21,043 | 40,900 |
| Apr 18 2011 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 0.00 | 2,160 | 0 | 59,190 |
| Apr 18 2011 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 12.92 | 17,040 | 220,143 | 42,150 |
| Apr 04 2011 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 14.32 | 1,250 | 17,900 | 61,350 |
| Jan 05 2011 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 14.24 | 1,250 | 17,800 | 62,600 |
| Oct 13 2010 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 10.00 | 1,250 | 12,500 | 63,850 |
| Oct 12 2010 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 10.00 | 1,250 | 12,500 | 65,100 |
| Apr 16 2010 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 57,600 | 0 | 66,350 |
| Apr 01 2010 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 10.43 | 1,250 | 13,038 | 8,750 |
| Mar 04 2010 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 10.52 | 1,250 | 13,155 | 10,000 |
| Oct 13 2009 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 12.46 | 10,000 | 124,633 | 11,250 |
| Oct 02 2009 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 11.11 | 1,250 | 13,893 | 21,250 |
| Jul 01 2009 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 8.22 | 1,250 | 10,274 | 22,500 |
| May 01 2009 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 8.63 | 20,000 | 172,600 | 23,750 |
| Apr 02 2009 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 8.21 | 1,250 | 10,256 | 43,750 |
| Jan 05 2009 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 6.48 | 5,000 | 32,395 | 45,000 |
| Jun 23 2008 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 599 | 0 | 50,599 |
| Jun 23 2008 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 14.89 | 599 | 8,919 | 50,000 |
| Jun 23 2008 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 599 | 0 | 0 |
| Jun 09 2008 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 4.88 | 1,250 | 6,100 | 51,250 |
| Jun 09 2008 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 14.64 | 1,250 | 18,302 | 50,000 |
| Jun 09 2008 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 4.88 | 1,250 | 6,100 | 3,125 |
| Mar 20 2008 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 600 | 0 | 50,600 |
| Mar 20 2008 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 18.64 | 600 | 11,184 | 50,000 |
| Mar 20 2008 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 600 | 0 | 599 |
| Jan 02 2008 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 20,000 | 0 | 50,000 |
| Dec 20 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 600 | 0 | 30,600 |
| Dec 20 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 22.80 | 600 | 13,681 | 30,000 |
| Dec 20 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 600 | 0 | 1,199 |
| Dec 13 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 216 | 0 | 30,216 |
| Dec 13 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 4.88 | 625 | 3,050 | 30,841 |
| Dec 13 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 21.97 | 625 | 13,732 | 30,216 |
| Dec 13 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 21.95 | 216 | 4,742 | 30,000 |
| Dec 13 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 216 | 0 | 1,799 |
| Dec 13 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 4.88 | 625 | 3,050 | 4,375 |
| Sep 24 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 600 | 0 | 30,600 |
| Sep 24 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 25.24 | 600 | 15,145 | 30,000 |
| Sep 24 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 600 | 0 | 2,015 |
| Aug 20 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 4.88 | 625 | 3,050 | 30,625 |
| Aug 20 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 24.78 | 625 | 15,487 | 30,000 |
| Aug 20 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 4.88 | 625 | 3,050 | 5,000 |
| Jun 22 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 600 | 0 | 30,600 |
| Jun 22 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 29.29 | 600 | 17,574 | 30,000 |
| Jun 22 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 600 | 0 | 2,615 |
| Jun 08 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 4.88 | 625 | 3,050 | 30,625 |
| Jun 08 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 25.77 | 625 | 16,107 | 30,000 |
| Jun 08 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 4.88 | 625 | 3,050 | 5,625 |
| Apr 30 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 20,000 | 0 | 30,000 |
| Mar 22 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 600 | 0 | 10,600 |
| Mar 22 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 4.88 | 3,750 | 18,300 | 14,350 |
| Mar 22 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 23.28 | 600 | 13,968 | 13,750 |
| Mar 22 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 23.80 | 3,750 | 89,250 | 10,000 |
| Mar 22 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 600 | 0 | 3,215 |
| Mar 22 2007 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 4.88 | 3,750 | 18,300 | 6,250 |
| Dec 21 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 600 | 0 | 10,600 |
| Dec 21 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 15.55 | 600 | 9,330 | 10,000 |
| Dec 21 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 600 | 0 | 3,815 |
| Oct 18 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 10,000 | 0 | 10,000 |
| Sep 26 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 600 | 0 | 2,280 |
| Sep 26 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 10.57 | 1,691 | 17,874 | 600 |
| Sep 26 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 10.57 | 600 | 6,342 | 0 |
| Sep 26 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 600 | 0 | 4,415 |
| Jun 21 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 600 | 0 | 3,680 |
| Jun 21 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 8.30 | 1,500 | 12,450 | 2,180 |
| Jun 21 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 8.30 | 500 | 4,150 | 1,680 |
| Jun 21 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 600 | 0 | 5,015 |
| Mar 21 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 4,000 | 0 | 8,480 |
| Mar 21 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 9.11 | 5,400 | 49,205 | 3,080 |
| Mar 21 2006 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 4,000 | 0 | 5,615 |
| Dec 09 2005 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 5.77 | 9,735 | 56,171 | 14,227 |
| Dec 09 2005 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Sell | 5.88 | 9,746 | 57,306 | 4,481 |
| Oct 28 2005 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 4.88 | 10,000 | 48,800 | 19,615 |
| Feb 16 2005 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Buy | 0.00 | 479,230 | 0 | 479,230 |
| Feb 16 2005 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 632 | 0 | 0 |
| Feb 16 2005 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.01 | 250 | 3 | 0 |
| Feb 16 2005 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 192,307 | 0 | 192,307 |
| Sep 10 2004 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.01 | 250 | 3 | 250 |
| Oct 10 2003 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 15.00 | 17,500 | 262,500 | 0 |
| Oct 10 2003 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 2.00 | 2,847 | 5,694 | 0 |
| Oct 10 2003 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 2.00 | 949 | 1,898 | 0 |
| Oct 10 2003 | COI | COGENT COMMUNICATIONS HOL ... | SCHLEIFER MARK A | VP of IP Engineering | Option Exercise | 0.00 | 623 | 0 | 623 |