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John P Obrien
Insider
First SEC filing: March 1, 2006 · Latest: March 1, 2006
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 |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 24, 2013 | CENX | A | 9,004 | · | · | 64,259 Direct | +16.30% | Acquired | (price as of 2026-10-02) |
| Sept. 19, 2012 | CENX | A | 11,078 | · | · | 55,255 Direct | +25.08% | Acquired | (price as of 2026-10-02) |
| June 8, 2011 | CENX | A | 4,565 | · | · | 44,177 Direct | +11.52% | Acquired | (price as of 2026-10-02) |
| June 9, 2010 | CENX | A | 6,732 | · | · | 39,612 Direct | +20.47% | Acquired | (price as of 2026-10-02) |
| May 28, 2009 | CENX | A | 13,833 | · | · | 32,880 Direct | +72.63% | Acquired | (price as of 2026-10-02) |
| Oct. 24, 2008 | CENX | M | 3,000 | $7.34 | $22,020 | 0 Direct | · | Acquired | 385.3% (price as of 2026-10-02) |
| Oct. 24, 2008 | CENX | M | 3,000 | $7.34 | $22,020 | 19,047 Direct | +18.70% | Acquired | 385.3% (price as of 2026-10-02) |
| Oct. 23, 2008 | CENX | P | 10,000 | $11.85 | $118,500 | 16,047 Direct | +165.37% | Acquired | 200.6% (price as of 2026-10-02) |
| June 25, 2008 | CENX | A | 1,047 | · | · | 6,047 Direct | +20.94% | Acquired | (price as of 2026-10-02) |
| May 24, 2007 | CENX | A | 3,000 | · | · | 3,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 12, 2006 | CENX | A | 3,000 | · | · | 3,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 12, 2006 | CENX | A | 3,000 | · | · | 3,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 27, 2006 | CENX | M | 2,000 | $15.87 | $31,740 | 0 Direct | -100.00% | Disposed | 124.4% (price as of 2026-10-02) |
| Feb. 27, 2006 | CENX | M | 10,000 | $13.31 | $133,100 | 0 Direct | -100.00% | Disposed | 167.6% (price as of 2026-10-02) |
| Feb. 27, 2006 | CENX | S | 12,000 | $35.80 | $429,600 | 0 Direct | -100.00% | Disposed | -0.5% (price as of 2026-10-02) |
| Feb. 27, 2006 | CENX | M | 2,000 | $15.87 | $31,740 | 12,000 Direct | +20.00% | Acquired | 124.4% (price as of 2026-10-02) |
| Feb. 27, 2006 | CENX | M | 10,000 | $13.31 | $133,100 | 10,000 Direct | · | Acquired | 167.6% (price as of 2026-10-02) |
| Aug. 11, 2005 | CENX | A | 3,000 | · | · | 3,000 Direct | · | Acquired | (price as of 2026-10-02) |
| July 19, 2004 | CENX | A | 3,000 | · | · | 3,000 Direct | · | Acquired | (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 |
|---|---|---|---|---|---|---|---|
| Oct. 24, 2008 | CENX | Stock Option [F2] | Common Stock | $7.34 | June 25, 2013 | 3,000 | Acquired |
| May 24, 2007 | CENX | Stock Option [F1] | Common Stock | $55.06 | May 24, 2007 | 3,000 | Acquired |
| June 12, 2006 | CENX | Stock Option | Common Stock | $37.31 | June 12, 2016 | 3,000 | Acquired |
| June 12, 2006 | CENX | Stock Option | Common Stock | $35.90 | June 12, 2016 | 3,000 | Acquired |
| Feb. 27, 2006 | CENX | Stock Option | Common Stock | $15.87 | · | 2,000 | Disposed |
| Feb. 27, 2006 | CENX | Stock Option | Common Stock | $13.31 | · | 10,000 | Disposed |
| Aug. 11, 2005 | CENX | Stock Option (right to buy) | Common Stock | $26.70 | Aug. 11, 2015 | 3,000 | Acquired |
| July 19, 2004 | CENX | Non-Employee Stock Options (Right to Buy) | Common Stock | $24.10 | July 19, 2014 | 3,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).