LIDDELL MIKE
CIK 950000 · View on SEC EDGAR ↗
Insider
First SEC filing: Sept. 30, 2004 · Latest: Sept. 30, 2004
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 17 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
17 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 28, 2012 | GPOR | S | 100,000 | $35.65 | $3,565,000 | 598,299 Direct | -14.32% | Disposed | 386.4% (price as of 2026-08-20) |
| June 1, 2011 | GPOR | S 10b5-1 | 25,000 | $29.14 | $728,500 | 658,299 Direct | -3.66% | Disposed | 495.1% (price as of 2026-08-20) |
| May 2, 2011 | GPOR | S 10b5-1 | 25,000 | $34.87 | $871,750 | 683,299 Direct | -3.53% | Disposed | 397.3% (price as of 2026-08-20) |
| April 1, 2011 | GPOR | S 10b5-1 | 25,000 | $36.52 | $913,000 | 708,299 Direct | -3.41% | Disposed | 374.8% (price as of 2026-08-20) |
| March 1, 2011 | GPOR | S 10b5-1 | 25,000 | $28.72 | $718,000 | 733,299 Direct | -3.30% | Disposed | 503.8% (price as of 2026-08-20) |
| Feb. 1, 2011 | GPOR | S 10b5-1 | 25,000 | $24.51 | $612,750 | 758,299 Direct | -3.19% | Disposed | 607.5% (price as of 2026-08-20) |
| Jan. 3, 2011 | GPOR | S 10b5-1 | 25,000 | $21.57 | $539,250 | 783,299 Direct | -3.09% | Disposed | 703.9% (price as of 2026-08-20) |
| Dec. 12, 2007 | GPOR | S | 675,000 | $16.80 | $11,340,000 | 19,081 Indirect | -97.25% | Disposed | 932.1% (price as of 2026-08-20) |
| Feb. 26, 2007 | GPOR | P | 10,000 | $12.00 | $120,000 | 650,178 Direct | +1.56% | Acquired | 1345.0% (price as of 2026-08-20) |
| May 3, 2006 | GPOR | S | 418,989 | $14.00 | $5,865,846 | 737,167 Indirect | -36.24% | Disposed | 1138.6% (price as of 2026-08-20) |
| Nov. 16, 2005 | GPOR | S | 175,000 | $9.55 | $1,671,250 | 1,123,070 Indirect | -13.48% | Disposed | 1715.7% (price as of 2026-08-20) |
| Nov. 16, 2005 | GPOR | S | 125,000 | $9.60 | $1,200,000 | 1,298,070 Indirect | -8.78% | Disposed | 1706.3% (price as of 2026-08-20) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Jan. 30, 2008 | GPOR | Employee Stock Option (Right to Buy) | Common Stock (91,454) | $3.36 | Jan. 24, 2015 | 91,454 | Disposed |
| Jan. 26, 2007 | GPOR | Employee Stock Option (right to buy) | Common Stock (91,454) | $3.36 | Jan. 24, 2015 | 91,454 | Disposed |
| Dec. 7, 2006 | GPOR | Employee Stock Option (right to buy) | Common Stock (91,454) | $3.36 | Jan. 24, 2015 | 91,454 | Disposed |
| Dec. 7, 2006 | GPOR | Employee Stock Option (right to buy) | Common Stock (203,635) | $2.00 | Jan. 17, 2010 | 203,635 | Disposed |
| Dec. 7, 2006 | GPOR | Employee Stock Option (right to buy) | Common Stock (253,635) | $2.00 | June 1, 2009 | 253,635 | Disposed |
| Aug. 18, 2004 | GPOR | Subscription Rights (right to buy) | Common Stock (734,924) | $1.20 | Aug. 20, 2004 | 734,924 | Disposed |
| Aug. 18, 2004 | GPOR | Subscription Rights (right to buy) | Common Stock (46,443) | $1.20 | Aug. 20, 2004 | 46,443 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).