Bert Vandervelde serves as Executive at KYPHON INC, where they oversee executive responsibilities. Since joining the company, Bert Vandervelde has executed 35 insider transactions totaling $6.7M, demonstrating a bearish approach to their equity position. Their most recent transaction on Nov 2, 2007 involved exercising options for 30,000 shares valued at $1.2M.
Bert Vandervelde currently holds 176,000 shares of KYPHON INC (KYPH), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Bert Vandervelde has been a net seller of KYPH stock. They have purchased $0 and sold $6.7M worth of shares.
Bert Vandervelde's most recent insider trade was on Nov 2, 2007, when they sold 30,000 shares at $39.27 per share.
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| 100,000 |
| $37.41 |
| Discretionary |
| Nov 2, 2007 | KYPH | $873.4K | Option Exercise | 36,000 | $24.26 | Discretionary |
| Nov 2, 2007 | KYPH | $0 | Disposition | 176,000 | $N/A | Discretionary |
| Nov 1, 2007 | KYPH | $242.6K | Option Exercise | 10,000 | $24.26 | Discretionary |
| Nov 1, 2007 | KYPH | $708.0K | Sale | 10,000 | $70.80 | Discretionary |
| Oct 1, 2007 | KYPH | $700.0K | Sale | 10,000 | $70.00 | Discretionary |
| Oct 1, 2007 | KYPH | $242.6K | Option Exercise | 10,000 | $24.26 | Discretionary |
| Sep 4, 2007 | KYPH | $67.0K | Sale | 1,000 | $66.99 | Discretionary |
| Sep 4, 2007 | KYPH | $339.6K | Option Exercise | 14,000 | $24.26 | Discretionary |
| Sep 4, 2007 | KYPH | $937.9K | Sale | 14,000 | $66.99 | Discretionary |
| Sep 4, 2007 | KYPH | $15.4K | Option Exercise | 1,000 | $15.40 | Discretionary |
| Aug 10, 2007 | KYPH | $0 | Award | 10,000 | $N/A | Discretionary |
| Aug 1, 2007 | KYPH | $718.6K | Sale | 11,000 | $65.33 | Discretionary |
| Aug 1, 2007 | KYPH | $215.6K | Option Exercise | 14,000 | $15.40 | Discretionary |
| Aug 1, 2007 | KYPH | $914.6K | Sale | 14,000 | $65.33 | Discretionary |
| Aug 1, 2007 | KYPH | $11.0K | Option Exercise | 11,000 | $1.00 | Discretionary |
| Aug 1, 2007 | KYPH | $914.6K | Sale | 14,000 | $65.33 | Discretionary |
| Aug 1, 2007 | KYPH | $11.0K | Option Exercise | 11,000 | $1.00 | Discretionary |
| Aug 1, 2007 | KYPH | $718.6K | Sale | 11,000 | $65.33 | Discretionary |
| Aug 1, 2007 | KYPH | $215.6K | Option Exercise | 14,000 | $15.40 | Discretionary |
| Jul 16, 2007 | KYPH | $270.1K | Sale | 5,000 | $54.01 | Discretionary |
| Jul 16, 2007 | KYPH | $5.0K | Option Exercise | 5,000 | $1.00 | Discretionary |
| Jun 14, 2007 | KYPH | $270 | Option Exercise | 270 | $1.00 | Discretionary |
| Jun 14, 2007 | KYPH | $13.0K | Sale | 270 | $48.14 | Discretionary |
| Jun 14, 2007 | KYPH | $107.4K | Sale | 2,230 | $48.14 | Discretionary |
| Jun 14, 2007 | KYPH | $2.2K | Option Exercise | 2,230 | $1.00 | Discretionary |
| May 14, 2007 | KYPH | $113.0K | Sale | 2,500 | $45.21 | Discretionary |
| May 14, 2007 | KYPH | $2.5K | Option Exercise | 2,500 | $1.00 | Discretionary |
| Mar 14, 2006 | KYPH | $101.4K | Sale | 3,000 | $33.81 | Discretionary |