GRINSTEIN KEITH
Insider
First SEC filing: Nov. 22, 2004 · Latest: Nov. 22, 2004
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 |
|---|---|---|---|---|---|---|---|---|---|
| March 11, 2008 | FFIV | A | 10,215 | · | · | 10,215 Direct | · | Acquired | (price as of 2026-10-02) |
| March 10, 2008 | FFIV | M | 5,412 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 10, 2008 | FFIV | M | 5,412 | · | · | 32,412 Direct | +20.04% | Acquired | (price as of 2026-10-02) |
| Feb. 1, 2008 | TBI | A | 8,418 | · | · | 20,889 Direct | +67.50% | Acquired | (price as of 2026-10-02) |
| March 22, 2007 | FFIV | M | 2,706 | · | · | 2,706 Direct | · | Acquired | (price as of 2026-10-02) |
| March 21, 2007 | FFIV | M | 5,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 21, 2007 | FFIV | M | 5,000 | · | · | 13,500 Direct | +58.82% | Acquired | (price as of 2026-10-02) |
| Feb. 7, 2007 | FFIV | M | 5,000 | $28.10 | $140,500 | 5,000 Direct | -50.00% | Disposed | 3131.6% (price as of 2026-10-02) |
| Feb. 7, 2007 | FFIV | S | 5,000 | $73.00 | $365,000 | 8,500 Direct | -37.04% | Disposed | 1143.9% (price as of 2026-10-02) |
| Feb. 7, 2007 | FFIV | M | 5,000 | $28.10 | $140,500 | 13,500 Direct | +58.82% | Acquired | 3131.6% (price as of 2026-10-02) |
| Feb. 2, 2007 | TBI | A | 6,586 | · | · | 12,471 Direct | +111.91% | Acquired | (price as of 2026-10-02) |
| March 2, 2006 | FFIV | A | 5,000 | · | · | 5,000 Direct | · | Acquired | (price as of 2026-10-02) |
| March 2, 2006 | FFIV | M | 2,500 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 2, 2006 | FFIV | M | 2,500 | · | · | 8,500 Direct | +41.67% | Acquired | (price as of 2026-10-02) |
| Jan. 3, 2006 | TBI | A | 5,885 | · | · | 5,885 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 13, 2005 | FFIV | M | 5,000 | $28.10 | $140,500 | 5,000 Direct | -50.00% | Disposed | 3131.6% (price as of 2026-10-02) |
| Dec. 13, 2005 | FFIV | S | 5,000 | $52.57 | $262,850 | 6,000 Direct | -45.45% | Disposed | 1627.4% (price as of 2026-10-02) |
| Dec. 13, 2005 | FFIV | M | 5,000 | $28.10 | $140,500 | 11,000 Direct | +83.33% | Acquired | 3131.6% (price as of 2026-10-02) |
| Nov. 17, 2005 | FFIV | M | 5,000 | $28.10 | $140,500 | 10,000 Direct | -33.33% | Disposed | 3131.6% (price as of 2026-10-02) |
| Nov. 17, 2005 | FFIV | S | 5,000 | $54.50 | $272,500 | 6,000 Direct | -45.45% | Disposed | 1566.2% (price as of 2026-10-02) |
| Nov. 17, 2005 | FFIV | M | 5,000 | $28.10 | $140,500 | 11,000 Direct | +83.33% | Acquired | 3131.6% (price as of 2026-10-02) |
| Sept. 14, 2005 | FFIV | M | 15,000 | $12.79 | $191,850 | 0 Direct | -100.00% | Disposed | 6999.9% (price as of 2026-10-02) |
| Sept. 14, 2005 | FFIV | S | 15,000 | $43.65 | $654,750 | 6,000 Direct | -71.43% | Disposed | 1980.4% (price as of 2026-10-02) |
| Sept. 14, 2005 | FFIV | M | 15,000 | $12.79 | $191,850 | 21,000 Direct | +250.00% | Acquired | 6999.9% (price as of 2026-10-02) |
| Aug. 1, 2005 | FFIV | A | 2,500 | · | · | 2,500 Direct | · | Acquired | (price as of 2026-10-02) |
| May 31, 2005 | FFIV | M | 10,000 | $11.12 | $111,200 | 0 Direct | -100.00% | Disposed | 8066.2% (price as of 2026-10-02) |
| May 31, 2005 | FFIV | S | 10,000 | $50.75 | $507,500 | 6,000 Direct | -62.50% | Disposed | 1689.3% (price as of 2026-10-02) |
| May 31, 2005 | FFIV | M | 10,000 | $11.12 | $111,200 | 16,000 Direct | +166.67% | Acquired | 8066.2% (price as of 2026-10-02) |
| Feb. 25, 2005 | FFIV | M | 5,000 | $11.12 | $55,600 | 10,000 Direct | -33.33% | Disposed | 8066.2% (price as of 2026-10-02) |
| Feb. 25, 2005 | FFIV | S | 5,000 | $54.45 | $272,250 | 6,000 Direct | -45.45% | Disposed | 1567.7% (price as of 2026-10-02) |
| Feb. 25, 2005 | FFIV | M | 5,000 | $11.12 | $55,600 | 11,000 Direct | +83.33% | Acquired | 8066.2% (price as of 2026-10-02) |
| Feb. 24, 2005 | FFIV | A | 7,500 | $53.73 | $402,975 | 7,500 Direct | · | Acquired | 1590.1% (price as of 2026-10-02) |
| Feb. 10, 2005 | FFIV | M | 2,500 | $9.50 | $23,750 | 0 Direct | -100.00% | Disposed | 9458.7% (price as of 2026-10-02) |
| Feb. 10, 2005 | FFIV | S | 2,500 | $50.21 | $125,525 | 6,000 Direct | -29.41% | Disposed | 1708.6% (price as of 2026-10-02) |
| Feb. 10, 2005 | FFIV | M | 2,500 | $9.50 | $23,750 | 8,500 Direct | +41.67% | Acquired | 9458.7% (price as of 2026-10-02) |
| Jan. 27, 2005 | FFIV | M | 5,000 | $9.50 | $47,500 | 2,500 Direct | -66.67% | Disposed | 9458.7% (price as of 2026-10-02) |
| Jan. 27, 2005 | FFIV | S | 5,000 | $48.25 | $241,250 | 6,000 Direct | -45.45% | Disposed | 1782.0% (price as of 2026-10-02) |
| Jan. 27, 2005 | FFIV | M | 5,000 | $9.50 | $47,500 | 11,000 Direct | +83.33% | Acquired | 9458.7% (price as of 2026-10-02) |
| Jan. 3, 2005 | TBI | A | 5,000 | $16.98 | $84,900 | 5,000 Direct | · | Acquired | -45.9% (price as of 2026-10-02) |
| Nov. 16, 2004 | TBI | A | 2,000 | $15.83 | $31,660 | 2,000 Direct | · | Acquired | -42.0% (price as of 2026-10-02) |
| Oct. 29, 2004 | FFIV | M | 5,000 | $8.10 | $40,500 | 11,000 Direct | +83.33% | Acquired | 11110.9% (price as of 2026-10-02) |
| Oct. 29, 2004 | FFIV | S | 5,000 | $39.52 | $197,600 | 6,000 Direct | -45.45% | Disposed | 2197.8% (price as of 2026-10-02) |
| Oct. 29, 2004 | FFIV | M | 5,000 | $8.10 | $40,500 | 0 Direct | -100.00% | Disposed | 11110.9% (price as of 2026-10-02) |
| April 29, 2004 | FFIV | A | 15,000 | $28.10 | $421,500 | 15,000 Direct | · | Acquired | 3131.6% (price as of 2026-10-02) |
| Feb. 10, 2004 | FFIV | M | 10,000 | $8.10 | $81,000 | 5,000 Direct | -66.67% | Disposed | 11110.9% (price as of 2026-10-02) |
| Feb. 10, 2004 | FFIV | S | 10,000 | $35.38 | $353,800 | 6,000 Direct | -62.50% | Disposed | 2466.6% (price as of 2026-10-02) |
| Feb. 10, 2004 | FFIV | M | 10,000 | $8.10 | $81,000 | 16,000 Direct | +166.67% | Acquired | 11110.9% (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 |
|---|---|---|---|---|---|---|---|
| March 11, 2008 | FFIV | Restricted Stock Units [F2] | Common Stock | $0.00 | March 11, 2018 | 10,215 | Acquired |
| March 10, 2008 | FFIV | Restricted Stock Units | Common Stock | $0.00 | March 22, 2017 | 5,412 | Disposed |
| March 22, 2007 | FFIV | Restricted Stock Units [F2] | Common Stock | $0.00 | March 22, 2017 | 2,706 | Acquired |
| March 21, 2007 | FFIV | Restricted Stock Units | Common Stock | $0.00 | March 2, 2016 | 5,000 | Disposed |
| Feb. 7, 2007 | FFIV | Non-Qualified Stock Options (right to buy) | Common Stock | $28.10 | April 29, 2014 | 5,000 | Disposed |
| March 2, 2006 | FFIV | Restricted Stock Units [F2] | Common Stock | $0.00 | March 2, 2016 | 5,000 | Acquired |
| March 2, 2006 | FFIV | Restricted Stock Units | Common Stock | $0.00 | Aug. 1, 2015 | 2,500 | Disposed |
| Dec. 13, 2005 | FFIV | Non-Qualified Stock Option (right to buy) | Common Stock | $28.10 | April 29, 2014 | 5,000 | Disposed |
| Nov. 17, 2005 | FFIV | Non-Qualified Stock Option (right to buy) | Common Stock | $28.10 | April 29, 2014 | 5,000 | Disposed |
| Sept. 14, 2005 | FFIV | Non-Qualified Stock Option (right to buy) | Common Stock | $12.79 | Feb. 13, 2013 | 15,000 | Disposed |
| Aug. 1, 2005 | FFIV | Restricted Stock Units [F1] | Common Stock | $0.00 | Aug. 1, 2015 | 2,500 | Acquired |
| May 31, 2005 | FFIV | Non-Qualified Stock Option (right to buy) | Common Stock | $11.12 | May 6, 2012 | 10,000 | Disposed |
| Feb. 25, 2005 | FFIV | Non-Qualified Stock Options (right to buy) | Common Stock | $11.12 | May 6, 2012 | 5,000 | Disposed |
| Feb. 24, 2005 | FFIV | Non-Qualified Stock Option (right to buy) [F1] | Common Stock | $53.73 | Feb. 24, 2015 | 7,500 | Acquired |
| Feb. 10, 2005 | FFIV | Non-Qualified Stock Option (right to buy) | Common Stock | $9.50 | Jan. 1, 2011 | 2,500 | Disposed |
| Jan. 27, 2005 | FFIV | Non-Qualified Stock Option (right to buy) | Common Stock | $9.50 | Jan. 1, 2011 | 5,000 | Disposed |
| Jan. 3, 2005 | TBI | Options (Right to buy) | Common stock | $16.98 | Jan. 3, 2015 | 5,000 | Acquired |
| Nov. 16, 2004 | TBI | Options (Right to buy) | Common stock | $15.83 | Nov. 16, 2014 | 2,000 | Acquired |
| Oct. 29, 2004 | FFIV | Non-Qualified Stock Option (right to buy) | Common Stock | $8.10 | April 20, 2011 | 5,000 | Disposed |
| April 29, 2004 | FFIV | Non-Qualified Stock Option (right to buy) [F1] | Common Stock | $28.10 | April 29, 2014 | 15,000 | Acquired |
| Feb. 10, 2004 | FFIV | Non-Qualified Stock Option (right to buy) | Common Stock | $8.10 | April 20, 2011 | 10,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Nov. 22, 2004 | TBI | Common stock | 0 | Direct |