Insider at

04

Insider transactions

05
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
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Feb. 28, 2012 GPOR S 100,000 $35.65 $3,565,000 598,299 Direct -14.32% Disposed 333.1% (price as of 2026-10-02)
June 1, 2011 GPOR S 10b5-1 25,000 $29.14 $728,500 658,299 Direct -3.66% Disposed 429.9% (price as of 2026-10-02)
May 2, 2011 GPOR S 10b5-1 25,000 $34.87 $871,750 683,299 Direct -3.53% Disposed 342.8% (price as of 2026-10-02)
April 1, 2011 GPOR S 10b5-1 25,000 $36.52 $913,000 708,299 Direct -3.41% Disposed 322.8% (price as of 2026-10-02)
March 1, 2011 GPOR S 10b5-1 25,000 $28.72 $718,000 733,299 Direct -3.30% Disposed 437.6% (price as of 2026-10-02)
Feb. 1, 2011 GPOR S 10b5-1 25,000 $24.51 $612,750 758,299 Direct -3.19% Disposed 529.9% (price as of 2026-10-02)
Jan. 3, 2011 GPOR S 10b5-1 25,000 $21.57 $539,250 783,299 Direct -3.09% Disposed 615.8% (price as of 2026-10-02)
Dec. 12, 2007 GPOR S 675,000 $16.80 $11,340,000 19,081 Indirect -97.25% Disposed 819.0% (price as of 2026-10-02)
Feb. 26, 2007 GPOR P 10,000 $12.00 $120,000 650,178 Direct +1.56% Acquired 1186.7% (price as of 2026-10-02)
May 3, 2006 GPOR S 418,989 $14.00 $5,865,846 737,167 Indirect -36.24% Disposed 1002.9% (price as of 2026-10-02)
Nov. 16, 2005 GPOR S 175,000 $9.55 $1,671,250 1,123,070 Indirect -13.48% Disposed 1516.8% (price as of 2026-10-02)
Nov. 16, 2005 GPOR S 125,000 $9.60 $1,200,000 1,298,070 Indirect -8.78% Disposed 1508.3% (price as of 2026-10-02)

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/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).