John Peter Walker
Insider
First SEC filing: Jan. 30, 2009 · Latest: Jan. 30, 2009
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 |
|---|---|---|---|---|---|---|---|---|---|
| Jan. 30, 2009 | GERN | M | 1,117 | $3.97 | $4,434 | 155,000 Direct | -0.72% | Disposed | -68.0% (price as of 2026-10-02) |
| Jan. 30, 2009 | GERN | M | 15,000 | $3.97 | $59,550 | 156,117 Direct | -8.77% | Disposed | -68.0% (price as of 2026-10-02) |
| Jan. 30, 2009 | GERN | M | 10,000 | $5.08 | $50,800 | 171,117 Direct | -5.52% | Disposed | -75.0% (price as of 2026-10-02) |
| Jan. 30, 2009 | GERN | M | 2,500 | $5.08 | $12,700 | 181,117 Direct | -1.36% | Disposed | -75.0% (price as of 2026-10-02) |
| Jan. 30, 2009 | GERN | M | 20,000 | $5.08 | $101,600 | 183,617 Direct | -9.82% | Disposed | -75.0% (price as of 2026-10-02) |
| Jan. 30, 2009 | GERN | S | 48,617 | $8.28 | $402,549 | 39,119 Direct | -55.41% | Disposed | -84.7% (price as of 2026-10-02) |
| Jan. 30, 2009 | GERN | M | 1,117 | $3.97 | $4,434 | 87,736 Direct | +1.29% | Acquired | -68.0% (price as of 2026-10-02) |
| Jan. 30, 2009 | GERN | M | 15,000 | $3.97 | $59,550 | 86,619 Direct | +20.94% | Acquired | -68.0% (price as of 2026-10-02) |
| Jan. 30, 2009 | GERN | M | 10,000 | $5.08 | $50,800 | 71,619 Direct | +16.23% | Acquired | -75.0% (price as of 2026-10-02) |
| Jan. 30, 2009 | GERN | M | 2,500 | $5.08 | $12,700 | 61,619 Direct | +4.23% | Acquired | -75.0% (price as of 2026-10-02) |
| Jan. 30, 2009 | GERN | M | 20,000 | $5.08 | $101,600 | 59,119 Direct | +51.13% | Acquired | -75.0% (price as of 2026-10-02) |
| May 28, 2008 | GERN | A | 6,700 | $3.97 | $26,599 | 215,900 Direct | +3.20% | Acquired | -68.0% (price as of 2026-10-02) |
| May 28, 2008 | GERN | A | 15,000 | $3.97 | $59,550 | 209,200 Direct | +7.72% | Acquired | -68.0% (price as of 2026-10-02) |
| May 28, 2008 | GERN | A | 7,500 | · | · | 59,744 Direct | +14.36% | Acquired | (price as of 2026-10-02) |
| May 28, 2008 | GERN | A | 7,557 | · | · | 52,244 Direct | +16.91% | Acquired | (price as of 2026-10-02) |
| May 23, 2007 | GERN | A | 15,000 | $9.32 | $139,800 | 194,200 Direct | +8.37% | Acquired | -86.4% (price as of 2026-10-02) |
| May 23, 2007 | GERN | A | 7,500 | · | · | 44,687 Direct | +20.17% | Acquired | (price as of 2026-10-02) |
| May 23, 2007 | GERN | A | 15,000 | · | · | 37,187 Direct | +67.61% | Acquired | (price as of 2026-10-02) |
| Jan. 3, 2007 | GERN | A | 20,000 | · | · | 22,187 Direct | +914.49% | Acquired | (price as of 2026-10-02) |
| May 24, 2006 | GERN | A | 30,000 | $6.63 | $198,900 | 191,100 Direct | +18.62% | Acquired | -80.9% (price as of 2026-10-02) |
| May 6, 2005 | GERN | A | 2,187 | · | · | 2,187 Direct | · | Acquired | (price as of 2026-10-02) |
| May 6, 2005 | GERN | A | 22,500 | $6.40 | $144,000 | 161,100 Direct | +16.23% | Acquired | -80.2% (price as of 2026-10-02) |
| Jan. 12, 2005 | GERN | A | 10,000 | $8.83 | $88,300 | 138,600 Direct | +7.78% | Acquired | -85.6% (price as of 2026-10-02) |
| May 27, 2004 | GERN | A | 22,500 | $7.56 | $170,100 | 128,600 Direct | +21.21% | Acquired | -83.2% (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 |
|---|---|---|---|---|---|---|---|
| Jan. 30, 2009 | GERN | Stock Option (right to buy) | Common Stock | $3.97 | April 28, 2009 | 1,117 | Disposed |
| Jan. 30, 2009 | GERN | Stock Option (right to buy) | Common Stock | $3.97 | April 28, 2009 | 15,000 | Disposed |
| Jan. 30, 2009 | GERN | Stock Option (right to buy) | Common Stock | $5.08 | April 28, 2009 | 10,000 | Disposed |
| Jan. 30, 2009 | GERN | Stock Option (right to buy) | Common Stock | $5.08 | April 28, 2009 | 2,500 | Disposed |
| Jan. 30, 2009 | GERN | Stock Option (right to buy) | Common Stock | $5.08 | April 28, 2009 | 20,000 | Disposed |
| May 28, 2008 | GERN | Stock Option (right to buy) | Common Stock | $3.97 | May 28, 2018 | 6,700 | Acquired |
| May 28, 2008 | GERN | Stock Option (right to buy) | Common Stock | $3.97 | May 28, 2018 | 15,000 | Acquired |
| May 23, 2007 | GERN | Stock Option (right to buy) | Common Stock | $9.32 | May 23, 2017 | 15,000 | Acquired |
| May 24, 2006 | GERN | Stock Option (right to buy) | Common Stock | $6.63 | May 24, 2016 | 30,000 | Acquired |
| May 6, 2005 | GERN | Stock Option (right to buy) | Common Stock | $6.40 | May 2, 2015 | 22,500 | Acquired |
| Jan. 12, 2005 | GERN | Stock Option (right to buy) | Common Stock | $8.83 | Jan. 12, 2015 | 10,000 | Acquired |
| May 27, 2004 | GERN | Stock Option (right to buy) | Common Stock | $7.56 | May 27, 2014 | 22,500 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).