Gordon Borteck
Insider
First SEC filing: April 2, 2004 · Latest: March 25, 2008
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 25, 2008 | MTX | M | 2,134 | · | · | 5,766 Direct | -27.01% | Disposed | (price as of 2026-10-05) |
| March 25, 2008 | MTX | M | 1,133 | · | · | 7,900 Direct | -12.54% | Disposed | (price as of 2026-10-05) |
| March 25, 2008 | MTX | S | 2,134 | $63.23 | $134,933 | 4,656 Direct | -31.43% | Disposed | 109.4% (price as of 2026-10-05) |
| March 25, 2008 | MTX | M | 2,134 | $61.56 | $131,369 | 6,790 Direct | +45.83% | Acquired | 115.1% (price as of 2026-10-05) |
| March 25, 2008 | MTX | S | 1,133 | $63.23 | $71,640 | 4,656 Direct | -19.57% | Disposed | 109.4% (price as of 2026-10-05) |
| March 25, 2008 | MTX | M | 1,133 | $61.94 | $70,178 | 5,789 Direct | +24.33% | Acquired | 113.8% (price as of 2026-10-05) |
| March 14, 2008 | MTX | M | 1,500 | · | · | 9,033 Direct | -14.24% | Disposed | (price as of 2026-10-05) |
| March 14, 2008 | MTX | S | 1,500 | $60.76 | $91,140 | 4,656 Direct | -24.37% | Disposed | 117.9% (price as of 2026-10-05) |
| March 14, 2008 | MTX | M | 1,500 | $54.23 | $81,345 | 6,156 Direct | +32.22% | Acquired | 144.1% (price as of 2026-10-05) |
| Feb. 28, 2008 | MTX | M | 1,334 | · | · | 9,432 Direct | -12.39% | Disposed | (price as of 2026-10-05) |
| Feb. 28, 2008 | MTX | F | 450 | $60.35 | $27,158 | 4,656 Direct | -8.81% | Disposed | 119.4% (price as of 2026-10-05) |
| Feb. 28, 2008 | MTX | M | 1,334 | · | · | 5,106 Direct | +35.37% | Acquired | (price as of 2026-10-05) |
| Feb. 22, 2008 | MTX | M | 967 | · | · | 3,772 Direct | +34.47% | Acquired | (price as of 2026-10-05) |
| Feb. 22, 2008 | MTX | M | 967 | · | · | 10,766 Direct | -8.24% | Disposed | (price as of 2026-10-05) |
| Feb. 6, 2008 | MTX | S | 1,127 | $60.29 | $67,947 | 0 Indirect | -100.00% | Disposed | 119.6% (price as of 2026-10-05) |
| Dec. 5, 2007 | MTX | S | 965 | $66.83 | $64,491 | 0 Indirect | -100.00% | Disposed | 98.1% (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | M | 1,500 | · | · | 10,533 Direct | -12.47% | Disposed | (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | M | 2,267 | · | · | 12,033 Direct | -15.85% | Disposed | (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | M | 5,400 | · | · | 14,300 Direct | -27.41% | Disposed | (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | M | 4,000 | · | · | 19,700 Direct | -16.88% | Disposed | (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | M | 522 | · | · | 23,700 Direct | -2.16% | Disposed | (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | M | 6,000 | · | · | 24,222 Direct | -19.85% | Disposed | (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | S | 1,500 | $69.83 | $104,745 | 2,805 Direct | -34.84% | Disposed | 89.6% (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | M | 1,500 | $54.23 | $81,345 | 4,305 Direct | +53.48% | Acquired | 144.1% (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | S | 2,267 | $69.83 | $158,305 | 2,805 Direct | -44.70% | Disposed | 89.6% (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | M | 2,267 | $61.94 | $140,418 | 5,072 Direct | +80.82% | Acquired | 113.8% (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | S | 5,400 | $69.83 | $377,082 | 2,805 Direct | -65.81% | Disposed | 89.6% (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | M | 5,400 | $53.90 | $291,060 | 8,205 Direct | +192.51% | Acquired | 145.6% (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | S | 4,000 | $69.83 | $279,320 | 2,805 Direct | -58.78% | Disposed | 89.6% (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | M | 4,000 | $49.12 | $196,480 | 6,805 Direct | +142.60% | Acquired | 169.5% (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | S | 552 | $69.83 | $38,546 | 2,805 Direct | -16.44% | Disposed | 89.6% (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | M | 522 | $46.63 | $24,341 | 3,327 Direct | +18.61% | Acquired | 183.9% (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | S | 6,000 | $69.83 | $418,980 | 2,805 Direct | -68.14% | Disposed | 89.6% (price as of 2026-10-05) |
| Oct. 31, 2007 | MTX | M | 6,000 | $34.83 | $208,980 | 8,805 Direct | +213.90% | Acquired | 280.1% (price as of 2026-10-05) |
| May 16, 2007 | MTX | S | 1,498 | $66.76 | $100,006 | 974 Indirect | -60.60% | Disposed | 98.3% (price as of 2026-10-05) |
| March 23, 2007 | MTX | M | 3,832 | · | · | 30,222 Direct | -11.25% | Disposed | (price as of 2026-10-05) |
| March 23, 2007 | MTX | S | 3,832 | $63.84 | $244,635 | 2,805 Direct | -57.74% | Disposed | 107.4% (price as of 2026-10-05) |
| March 23, 2007 | MTX | M | 3,832 | $39.53 | $151,479 | 6,637 Direct | +136.61% | Acquired | 234.9% (price as of 2026-10-05) |
| Feb. 28, 2007 | MTX | A | 4,000 | · | · | 11,733 Direct | +51.73% | Acquired | (price as of 2026-10-05) |
| Feb. 28, 2007 | MTX | A | 6,400 | · | · | 34,054 Direct | +23.14% | Acquired | (price as of 2026-10-05) |
| Feb. 22, 2007 | MTX | M | 967 | · | · | 7,733 Direct | -11.11% | Disposed | (price as of 2026-10-05) |
| Feb. 22, 2007 | MTX | F | 323 | $61.43 | $19,842 | 2,805 Direct | -10.33% | Disposed | 115.5% (price as of 2026-10-05) |
| Feb. 22, 2007 | MTX | M | 967 | · | · | 3,128 Direct | +44.75% | Acquired | (price as of 2026-10-05) |
| Feb. 22, 2007 | MTX | M | 967 | · | · | 7,733 Direct | -11.11% | Disposed | (price as of 2026-10-05) |
| Feb. 22, 2007 | MTX | M | 967 | · | · | 3,128 Direct | +44.75% | Acquired | (price as of 2026-10-05) |
| Feb. 22, 2006 | MTX | A | 4,500 | $54.23 | $244,035 | 29,254 Direct | +18.18% | Acquired | 144.1% (price as of 2026-10-05) |
| Feb. 22, 2006 | MTX | A | 2,900 | · | · | 8,700 Direct | +50.00% | Acquired | (price as of 2026-10-05) |
| Feb. 22, 2006 | MTX | A | 4,500 | · | · | 29,254 Direct | +18.18% | Acquired | (price as of 2026-10-05) |
| May 5, 2005 | MTX | M | 1,600 | · | · | 27,654 Direct | -5.47% | Disposed | (price as of 2026-10-05) |
| May 5, 2005 | MTX | F | 939 | $67.35 | $63,242 | 2,161 Direct | -30.29% | Disposed | 96.6% (price as of 2026-10-05) |
| May 5, 2005 | MTX | M | 1,600 | $39.53 | $63,248 | 3,100 Direct | +106.67% | Acquired | 234.9% (price as of 2026-10-05) |
| Feb. 23, 2005 | MTX | A | 2,300 | · | · | 5,800 Direct | +65.71% | Acquired | (price as of 2026-10-05) |
| Feb. 23, 2005 | MTX | A | 3,400 | · | · | 24,754 Direct | +15.92% | Acquired | (price as of 2026-10-05) |
| Nov. 11, 2004 | MTX | M | 1,940 | · | · | 21,354 Direct | -8.33% | Disposed | (price as of 2026-10-05) |
| Nov. 11, 2004 | MTX | S | 1,440 | $63.01 | $90,734 | 1,500 Direct | -48.98% | Disposed | 110.1% (price as of 2026-10-05) |
| Nov. 11, 2004 | MTX | M | 1,940 | $39.53 | $76,688 | 2,940 Direct | +194.00% | Acquired | 234.9% (price as of 2026-10-05) |
| April 1, 2004 | MTX | M | 4,100 | · | · | 24,294 Direct | -14.44% | Disposed | (price as of 2026-10-05) |
| April 1, 2004 | MTX | S | 3,100 | $57.10 | $177,010 | 1,000 Direct | -75.61% | Disposed | 131.9% (price as of 2026-10-05) |
| April 1, 2004 | MTX | M | 900 | $39.53 | $35,577 | 4,100 Direct | +28.12% | Acquired | 234.9% (price as of 2026-10-05) |
| April 1, 2004 | MTX | M | 3,200 | $39.53 | $126,496 | 3,200 Direct | · | Acquired | 234.9% (price as of 2026-10-05) |
| April 1, 2004 | MTX | M | 5,100 | · | · | 23,294 Direct | -17.96% | Disposed | (price as of 2026-10-05) |
| April 1, 2004 | MTX | S | 3,200 | $57.10 | $182,720 | 1,000 Direct | -76.19% | Disposed | 131.9% (price as of 2026-10-05) |
| April 1, 2004 | MTX | S | 900 | $57.28 | $51,552 | 4,200 Direct | -17.65% | Disposed | 131.1% (price as of 2026-10-05) |
| April 1, 2004 | MTX | M | 5,100 | $39.53 | $201,603 | 5,100 Direct | · | Acquired | 234.9% (price as of 2026-10-05) |
| Feb. 25, 2004 | MTX | A | 1,900 | · | · | 3,500 Direct | +118.75% | Acquired | (price as of 2026-10-05) |
| Feb. 25, 2004 | MTX | A | 5,400 | · | · | 34,232 Direct | +18.73% | Acquired | (price as of 2026-10-05) |
| Dec. 31, 2003 | MTX | A | 32 | · | · | 243 Direct | +15.17% | Acquired | (price as of 2026-10-05) |
| Nov. 5, 2003 | MTX | A | 1,600 | · | · | 1,600 Direct | · | Acquired | (price as of 2026-10-05) |
| Aug. 29, 2003 | MTX | J | 4 | $50.55 | $202 | 1,859 Indirect | +0.22% | Acquired | 161.9% (price as of 2026-10-05) |
| July 1, 2003 | MTX | None | · | · | · | · | · | (price as of 2026-10-05) |
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 25, 2008 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $61.56 | Feb. 28, 2017 | 2,134 | Disposed |
| March 25, 2008 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $61.94 | Feb. 23, 2015 | 1,133 | Disposed |
| March 14, 2008 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $54.23 | Feb. 22, 2016 | 1,500 | Disposed |
| Feb. 28, 2008 | MTX | Deferred Restricted Stock Units ("DRSUs") | Common Stock | · | · | 1,334 | Disposed |
| Feb. 22, 2008 | MTX | Deferred Restricted Stock Units ("DRSUs") | Common Stock | · | · | 967 | Disposed |
| Oct. 31, 2007 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $54.23 | Feb. 22, 2016 | 1,500 | Disposed |
| Oct. 31, 2007 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $61.94 | Feb. 23, 2015 | 2,267 | Disposed |
| Oct. 31, 2007 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $53.90 | Feb. 25, 2014 | 5,400 | Disposed |
| Oct. 31, 2007 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $49.12 | July 1, 2013 | 4,000 | Disposed |
| Oct. 31, 2007 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $46.63 | Jan. 24, 2012 | 522 | Disposed |
| Oct. 31, 2007 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $34.83 | March 16, 2011 | 6,000 | Disposed |
| March 23, 2007 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $39.53 | Jan. 28, 2009 | 3,832 | Disposed |
| Feb. 28, 2007 | MTX | Deferred Restricted Stock Units ("DRSUs") | Common Stock | · | · | 4,000 | Acquired |
| Feb. 28, 2007 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $61.56 | Feb. 28, 2017 | 6,400 | Acquired |
| Feb. 22, 2007 | MTX | Deferred Restricted Stock Units ("DRSUs") | Common Stock | · | · | 967 | Disposed |
| Feb. 22, 2007 | MTX | Deferred Restricted Stock Units ("DRSUs") | Common Stock | · | · | 967 | Disposed |
| Feb. 22, 2006 | MTX | Employee Stock Option (Right to Buy) | Common Stock | · | Feb. 22, 2016 | 4,500 | Acquired |
| Feb. 22, 2006 | MTX | Deferred Stock | Common Stock | · | · | 2,900 | Acquired |
| Feb. 22, 2006 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $53.79 | Feb. 22, 2016 | 4,500 | Acquired |
| May 5, 2005 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $39.53 | Jan. 28, 2009 | 1,600 | Disposed |
| Feb. 23, 2005 | MTX | Deferred Stock | Common Stock | · | · | 2,300 | Acquired |
| Feb. 23, 2005 | MTX | Employee Stock Option (Right to Buy) | Common Stock | $61.94 | · | 3,400 | Acquired |
| Nov. 11, 2004 | MTX | EMPLOYEE STOCK OPTION (RIGHT TO BUY) | COMMON STOCK | $39.53 | · | 1,940 | Disposed |
| April 1, 2004 | MTX | EMPLOYEE STOCK OPTION (RIGHT TO BUY) | COMMON STOCK | $39.53 | · | 4,100 | Disposed |
| April 1, 2004 | MTX | EMPLOYEE STOCK OPTION (RIGHT TO BUY) | COMMON STOCK | $39.53 | · | 5,100 | Disposed |
| Feb. 25, 2004 | MTX | DEFERRED STOCK | COMMON STOCK | · | Feb. 25, 2009 | 1,900 | Acquired |
| Feb. 25, 2004 | MTX | EMPLOYEE STOCK OPTION (RIGHT TO BUY) | COMMON STOCK | $53.89 | · | 5,400 | Acquired |
| Dec. 31, 2003 | MTX | PHANTOM STOCK UNITS | COMMON STOCK | · | · | 32 | Acquired |
| Nov. 5, 2003 | MTX | DEFERRED STOCK [F1] | COMMON STOCK | · | · | 1,600 | Acquired |
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 |
|---|---|---|---|---|
| April 2, 2004 | MTX | EMPLOYEE STOCK OPTION (RIGHT TO BUY) | · | Direct |