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Arlyn J Lanting
Insider
First SEC filing: Jan. 31, 2012 · Latest: Jan. 31, 2012
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 16, 2013 | GNTX | A | 6,000 | $24.73 | $148,380 | 6,000 Direct | · | Acquired | 78.6% (price as of 2026-10-02) |
| May 17, 2012 | GNTX | A | 6,000 | $22.39 | $134,340 | 6,000 Direct | · | Acquired | 97.2% (price as of 2026-10-02) |
| April 26, 2012 | GNTX | A | 10,000 | $21.88 | $218,800 | 240,000 Indirect | +4.35% | Acquired | 101.8% (price as of 2026-10-02) |
| April 23, 2012 | GNTX | A | 5,000 | $20.99 | $104,950 | 230,000 Indirect | +2.22% | Acquired | 110.4% (price as of 2026-10-02) |
| May 13, 2011 | GNTX | S | 41,100 | $31.46 | $1,293,006 | 250,150 Indirect | -14.11% | Disposed | 40.4% (price as of 2026-10-02) |
| May 12, 2011 | GNTX | A | 6,000 | $31.71 | $190,260 | 6,000 Direct | · | Acquired | 39.3% (price as of 2026-10-02) |
| May 6, 2011 | GNTX | G | 8,850 | $31.12 | $275,412 | 291,250 Indirect | -2.95% | Disposed | 41.9% (price as of 2026-10-02) |
| Jan. 31, 2011 | GNTX | S | 13,150 | $31.77 | $417,776 | 300,100 Indirect | -4.20% | Disposed | 39.0% (price as of 2026-10-02) |
| Dec. 10, 2010 | GNTX | M | 12,000 | $18.04 | $216,480 | 0 Direct | -100.00% | Disposed | 144.8% (price as of 2026-10-02) |
| Dec. 10, 2010 | GNTX | M | 12,000 | $15.92 | $191,040 | 0 Direct | -100.00% | Disposed | 177.4% (price as of 2026-10-02) |
| Dec. 10, 2010 | GNTX | M | 12,000 | $15.94 | $191,280 | 0 Direct | -100.00% | Disposed | 177.0% (price as of 2026-10-02) |
| Dec. 10, 2010 | GNTX | M | 10,000 | $13.70 | $137,000 | 0 Direct | -100.00% | Disposed | 222.3% (price as of 2026-10-02) |
| Dec. 10, 2010 | GNTX | S | 46,000 | $28.76 | $1,322,960 | 0 Direct | -100.00% | Disposed | 53.5% (price as of 2026-10-02) |
| Dec. 10, 2010 | GNTX | M | 12,000 | $18.04 | $216,480 | 46,000 Direct | +35.29% | Acquired | 144.8% (price as of 2026-10-02) |
| Dec. 10, 2010 | GNTX | M | 12,000 | $15.92 | $191,040 | 34,000 Direct | +54.55% | Acquired | 177.4% (price as of 2026-10-02) |
| Dec. 10, 2010 | GNTX | M | 12,000 | $15.94 | $191,280 | 22,000 Direct | +120.00% | Acquired | 177.0% (price as of 2026-10-02) |
| Dec. 10, 2010 | GNTX | M | 10,000 | $13.70 | $137,000 | 10,000 Direct | · | Acquired | 222.3% (price as of 2026-10-02) |
| May 13, 2010 | GNTX | A | 6,000 | $21.12 | $126,720 | 6,000 Direct | · | Acquired | 109.1% (price as of 2026-10-02) |
| May 10, 2010 | GNTX | M | 10,000 | $15.41 | $154,100 | 0 Direct | -100.00% | Disposed | 186.6% (price as of 2026-10-02) |
| May 10, 2010 | GNTX | G | 10,000 | $20.58 | $205,800 | 313,250 Indirect | +3.30% | Acquired | 114.6% (price as of 2026-10-02) |
| May 10, 2010 | GNTX | G | 10,000 | $20.58 | $205,800 | 0 Direct | -100.00% | Disposed | 114.6% (price as of 2026-10-02) |
| May 10, 2010 | GNTX | M | 10,000 | $15.41 | $154,100 | 10,000 Direct | · | Acquired | 186.6% (price as of 2026-10-02) |
| March 8, 2010 | GNTX | S | 50,000 | $20.32 | $1,016,000 | 303,250 Indirect | -14.15% | Disposed | 117.3% (price as of 2026-10-02) |
| May 14, 2009 | GNTX | A | 6,000 | $11.09 | $66,540 | 6,000 Direct | · | Acquired | 298.2% (price as of 2026-10-02) |
| May 15, 2008 | GNTX | A | 6,000 | $19.34 | $116,040 | 6,000 Direct | · | Acquired | 128.3% (price as of 2026-10-02) |
| May 5, 2008 | GNTX | M | 20,000 | $8.73 | $174,600 | 20,000 Direct | · | Acquired | 405.8% (price as of 2026-10-02) |
| May 5, 2008 | GNTX | M | 20,000 | $8.73 | $174,600 | 0 Direct | -100.00% | Disposed | 405.8% (price as of 2026-10-02) |
| May 5, 2008 | GNTX | G | 20,000 | $18.41 | $368,200 | 353,250 Indirect | +6.00% | Acquired | 139.9% (price as of 2026-10-02) |
| May 5, 2008 | GNTX | G | 20,000 | $18.41 | $368,200 | 0 Direct | -100.00% | Disposed | 139.9% (price as of 2026-10-02) |
| Feb. 1, 2008 | GNTX | G | 333,250 | $15.91 | $5,302,008 | 333,250 Indirect | · | Acquired | 177.6% (price as of 2026-10-02) |
| Feb. 1, 2008 | GNTX | G | 333,250 | $15.91 | $5,302,008 | 0 Direct | -100.00% | Disposed | 177.6% (price as of 2026-10-02) |
| Dec. 27, 2007 | GNTX | J | 81,250 | · | · | 333,250 Direct | +32.24% | Acquired | (price as of 2026-10-02) |
| May 10, 2007 | GNTX | A | 6,000 | $18.41 | $110,460 | 6,000 Direct | · | Acquired | 139.9% (price as of 2026-10-02) |
| May 9, 2007 | GNTX | M | 10,000 | $4.66 | $46,600 | 0 Direct | -100.00% | Disposed | 847.6% (price as of 2026-10-02) |
| May 9, 2007 | GNTX | M | 10,000 | $4.66 | $46,600 | 252,000 Direct | +4.13% | Acquired | 847.6% (price as of 2026-10-02) |
| April 30, 2007 | GNTX | M | 10,000 | $4.66 | $46,600 | 10,000 Direct | -50.00% | Disposed | 847.6% (price as of 2026-10-02) |
| April 30, 2007 | GNTX | M | 10,000 | $4.66 | $46,600 | 242,000 Direct | +4.31% | Acquired | 847.6% (price as of 2026-10-02) |
| May 23, 2006 | GNTX | S | 40,000 | $14.91 | $596,400 | 232,000 Direct | -14.71% | Disposed | 196.2% (price as of 2026-10-02) |
| May 11, 2006 | GNTX | A | 6,000 | $14.76 | $88,560 | 6,000 Direct | · | Acquired | 199.2% (price as of 2026-10-02) |
| May 1, 2006 | GNTX | M | 40,000 | $4.59 | $183,600 | 0 Direct | -100.00% | Disposed | 862.1% (price as of 2026-10-02) |
| May 1, 2006 | GNTX | M | 40,000 | $4.59 | $183,600 | 272,000 Direct | +17.24% | Acquired | 862.1% (price as of 2026-10-02) |
| March 14, 2006 | GNTX | S | 40,000 | $16.93 | $677,200 | 232,000 Direct | -14.71% | Disposed | 160.8% (price as of 2026-10-02) |
| May 12, 2005 | GNTX | A | 6,000 | $17.71 | $106,260 | 6,000 Direct | · | Acquired | 149.4% (price as of 2026-10-02) |
| May 6, 2005 | GNTX | M | 10,000 | $4.94 | $49,400 | 0 Direct | -100.00% | Disposed | 1687.9% (price as of 2026-10-02) |
| May 6, 2005 | GNTX | M | 10,000 | $4.94 | $49,400 | 0 Direct | -100.00% | Disposed | 1687.9% (price as of 2026-10-02) |
| May 6, 2005 | GNTX | M | 10,000 | $4.94 | $49,400 | 136,000 Direct | +7.94% | Acquired | 1687.9% (price as of 2026-10-02) |
| May 6, 2005 | GNTX | M | 10,000 | $4.94 | $49,400 | 126,000 Direct | +8.62% | Acquired | 1687.9% (price as of 2026-10-02) |
| May 6, 2005 | GNTX | M | 10,000 | $4.94 | $49,400 | 0 Direct | -100.00% | Disposed | 1687.9% (price as of 2026-10-02) |
| May 6, 2005 | GNTX | M | 10,000 | $4.94 | $49,400 | 136,000 Direct | +7.94% | Acquired | 1687.9% (price as of 2026-10-02) |
| May 6, 2005 | GNTX | M | 10,000 | $4.94 | $49,400 | 126,000 Direct | +8.62% | Acquired | 1687.9% (price as of 2026-10-02) |
| May 13, 2004 | GNTX | A | 6,000 | $36.07 | $216,420 | 6,000 Direct | · | Acquired | 144.9% (price as of 2026-10-02) |
| April 29, 2004 | GNTX | M | 10,000 | $4.94 | $49,400 | 0 Direct | -100.00% | Disposed | 1687.9% (price as of 2026-10-02) |
| April 29, 2004 | GNTX | M | 10,000 | $6.75 | $67,500 | 0 Direct | -100.00% | Disposed | 1208.4% (price as of 2026-10-02) |
| April 29, 2004 | GNTX | M | 10,000 | $6.75 | $67,500 | 116,000 Direct | +9.43% | Acquired | 1208.4% (price as of 2026-10-02) |
| April 28, 2004 | GNTX | M | 10,000 | $6.75 | $67,500 | 10,000 Direct | -50.00% | Disposed | 1208.4% (price as of 2026-10-02) |
| April 28, 2004 | GNTX | M | 10,000 | $6.75 | $67,500 | 106,000 Direct | +10.42% | Acquired | 1208.4% (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.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| May 16, 2013 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $24.73 | May 16, 2023 | 6,000 | Acquired |
| May 17, 2012 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $22.39 | May 17, 2022 | 6,000 | Acquired |
| May 12, 2011 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $31.71 | May 12, 2021 | 6,000 | Acquired |
| Dec. 10, 2010 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $18.04 | May 13, 2014 | 12,000 | Disposed |
| Dec. 10, 2010 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $15.92 | May 14, 2013 | 12,000 | Disposed |
| Dec. 10, 2010 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $15.94 | May 9, 2012 | 12,000 | Disposed |
| Dec. 10, 2010 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $13.70 | May 16, 2011 | 10,000 | Disposed |
| May 13, 2010 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $21.12 | May 13, 2020 | 6,000 | Acquired |
| May 10, 2010 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $15.41 | May 18, 2010 | 10,000 | Disposed |
| May 14, 2009 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $11.09 | May 14, 2019 | 6,000 | Acquired |
| May 15, 2008 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $19.34 | May 15, 2018 | 6,000 | Acquired |
| May 5, 2008 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $8.73 | May 21, 2008 | 20,000 | Disposed |
| May 10, 2007 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $18.41 | May 10, 2017 | 6,000 | Acquired |
| May 9, 2007 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $4.66 | May 15, 2007 | 10,000 | Disposed |
| April 30, 2007 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $4.66 | May 15, 2007 | 10,000 | Disposed |
| May 11, 2006 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $14.76 | May 11, 2016 | 6,000 | Acquired |
| May 1, 2006 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $4.59 | May 9, 2006 | 40,000 | Disposed |
| May 12, 2005 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $17.71 | May 12, 2015 | 6,000 | Acquired |
| May 6, 2005 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $4.94 | May 11, 2005 | 10,000 | Disposed |
| May 6, 2005 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $4.94 | May 11, 2005 | 10,000 | Disposed |
| May 6, 2005 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $4.94 | May 11, 2005 | 10,000 | Disposed |
| May 13, 2004 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $36.07 | May 13, 2014 | 6,000 | Acquired |
| April 29, 2004 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $4.94 | May 11, 2005 | 10,000 | Disposed |
| April 29, 2004 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $6.75 | May 15, 2004 | 10,000 | Disposed |
| April 28, 2004 | GNTX | Non-Employee Director Stock Option Grant | Common Stock | $6.75 | May 12, 2004 | 10,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).