Dennis R Harrison

CIK 1176516 · View on SEC EDGAR ↗

Insider

First SEC filing: April 2, 2004 · Latest: March 3, 2009

On this page

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 85 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

85 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
March 8, 2012 MTX P 0 — — 150 Indirect 0.00% Acquired (price as of 2026-08-21)
Feb. 17, 2012 MTX P 0 — — 23 Indirect 0.00% Acquired (price as of 2026-08-21)
Feb. 17, 2012 MTX S 8,077 $66.99 $541,078 9,080 Direct -47.08% Disposed 114.4% (price as of 2026-08-21)
Feb. 9, 2012 MTX P 0 — — 23 Direct 0.00% Acquired (price as of 2026-08-21)
Feb. 9, 2012 MTX P 0 — — 23 Direct 0.00% Acquired (price as of 2026-08-21)
Jan. 26, 2012 MTX P 0 — — 15 Indirect 0.00% Acquired (price as of 2026-08-21)
Jan. 26, 2012 MTX P 0 — — 15 Indirect 0.00% Acquired (price as of 2026-08-21)
Jan. 26, 2012 MTX P 0 — — 15 Indirect 0.00% Acquired (price as of 2026-08-21)
May 27, 2011 MTX S 498 $66.50 $33,117 16,307 Direct -2.96% Disposed 115.9% (price as of 2026-08-21)
Sept. 27, 2010 MTX S 214 $57.85 $12,380 3,231 Indirect -6.21% Disposed 148.2% (price as of 2026-08-21)
March 7, 2008 MTX S 1,100 $58.91 $64,801 2,843 Direct -27.90% Disposed 143.8% (price as of 2026-08-21)
Feb. 28, 2007 MTX S 2,500 $61.91 $154,775 2,149 Direct -53.78% Disposed 131.9% (price as of 2026-08-21)
Feb. 28, 2007 MTX S 2,500 $61.91 $154,775 2,149 Direct -53.78% Disposed 131.9% (price as of 2026-08-21)
Feb. 9, 2006 MTX S 6,000 $55.03 $330,180 1,500 Direct -80.00% Disposed 160.9% (price as of 2026-08-21)
Dec. 21, 2004 MTX S 437 $66.48 $29,052 1,500 Direct -22.56% Disposed 116.0% (price as of 2026-08-21)

Showing latest 100 of 111 transactions

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
Feb. 9, 2012 MTX Employee Stock Option (Right to Buy) Common Stock (4,000) $34.83 March 15, 2011 4,000 Acquired
Jan. 28, 2012 MTX Deferred Restricted Stock Units (DRSUs) Common Stock (2,433) — — 2,433 Disposed
Jan. 27, 2012 MTX Deferred Restricted Stock Units (DRSUs) Common Stock (1,967) — — 1,967 Disposed
Jan. 26, 2012 MTX Deferred Restricted Stock Units (DRSUs) Common Stock (1,499) — — 1,499 Disposed
May 27, 2011 MTX Employee Stock Option (Right to Buy) Common Stock (498) $46.62 Jan. 24, 2012 498 Disposed
Feb. 27, 2011 MTX Deferred Restricted Stock Units (DRSUs) Common Stock (1,500) — — 1,500 Disposed
Jan. 28, 2011 MTX Deferred Restricted Stock Units (DRSUs) Common Stock (2,433) — — 2,433 Disposed
Jan. 27, 2011 MTX Deferred Restricted Stock Units (DRSUs) Common Stock (1,967) — — 1,967 Disposed
Jan. 26, 2011 MTX Deferred Restricted Stock Units (DRSUs) Common Stock (4,496) — — 4,496 Acquired
Jan. 26, 2011 MTX Employee Stock Option (Right to Buy) Common Stock (7,411) $64.46 Jan. 26, 2021 7,411 Acquired
March 1, 2010 MTX DRSUs Common Stock (1,300) — — 1,300 Disposed
March 1, 2010 MTX Deferred Restricted Stock Units (DRSUs) Common Stock (1,500) — — 1,500 Disposed
Feb. 23, 2010 MTX Deferred Restricted Stock Units (DRSUs) Common Stock (2,300) — — 2,300 Disposed
Jan. 28, 2010 MTX DRSUs Common Stock (2,434) — — 2,434 Disposed
Jan. 27, 2010 MTX Deferred Restricted Stock Units (DRSUs) Common Stock (5,900) — — 5,900 Acquired
Jan. 27, 2010 MTX Employee Stock Option (Right to Buy) Common Stock (9,725) $49.12 Jan. 27, 2020 9,725 Acquired
March 2, 2009 MTX DRSUs Common Stock (1,300) — — 1,300 Disposed
Feb. 27, 2009 MTX Deferred Restricted Stock Units ("DRSUs") Common Stock (1,500) — — 1,500 Disposed
Feb. 25, 2009 MTX Deferred Restricted Stock Units ("DRSUs") Common Stock (1,800) — — 1,800 Disposed
Feb. 23, 2009 MTX Deferred Restricted Stock Units ("DRSUs") Common Stock (933) — — 933 Disposed
Jan. 28, 2009 MTX Deferred Restricted Stock Units (DRSUs) Common Stock (7,300) — — 7,300 Acquired
Jan. 28, 2009 MTX Employee Stock Option (Right to Buy) Common Stock (12,000) $39.71 Jan. 28, 2019 12,000 Acquired
July 1, 2008 MTX Deferred Restricted Stock Units ("DRSUs") Common Stock (1,600) — — 1,600 Disposed
Feb. 28, 2008 MTX DRSUs Common Stock (1,300) — — 1,300 Disposed
Feb. 27, 2008 MTX Deferred Restricted Stock Units ("DRSUs") Common Stock (4,500) — — 4,500 Acquired
Feb. 27, 2008 MTX Employee Stock Option (Right to Buy) Common Stock (7,500) $64.16 Feb. 27, 2018 7,500 Acquired
Feb. 22, 2008 MTX Deferred Restricted Stock Units ("DRSUs") Common Stock (933) — — 933 Disposed
Feb. 28, 2007 MTX Employee Stock Option (Right to Buy) [F2] Common Stock (2,500) $51.38 — 2,500 Disposed
Feb. 28, 2007 MTX Deferred Restricted Stock Units ("DRSUs") Common Stock (3,900) — — 3,900 Acquired
Feb. 28, 2007 MTX Employee Stock Option (Right to Buy) Common Stock (6,200) $61.56 Feb. 28, 2017 6,200 Acquired
Feb. 28, 2007 MTX Deferred Restricted Stock Units ("DRSUs") Common Stock (2,500) $51.38 — 2,500 Disposed
Feb. 22, 2007 MTX Deferred Restricted Stock Units ("DRSUs") Common Stock (934) — — 934 Disposed
Feb. 22, 2007 MTX Deferred Restricted Stock Units ("DRSUs") Common Stock (934) — — 934 Disposed
Feb. 22, 2006 MTX Employee Stock Option (Right to Buy) Common Stock (4,400) — Feb. 22, 2016 4,400 Acquired
Feb. 22, 2006 MTX Deferred Stock Common Stock (2,800) — — 2,800 Acquired
Feb. 22, 2006 MTX Employee Stock Option (Right to Buy) Common Stock (4,400) $53.79 Feb. 22, 2016 4,400 Acquired
Feb. 9, 2006 MTX Employee Stock Option (Right to Buy) COMMON STOCK (6,000) $34.83 — 6,000 Disposed
Feb. 23, 2005 MTX Deferred Stock Common Stock (2,300) — — 2,300 Acquired
Feb. 23, 2005 MTX Employee Stock Option (Right to Buy) COMMON STOCK (3,300) $61.94 — 3,300 Acquired
Dec. 21, 2004 MTX EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (437) $39.53 — 437 Disposed
Dec. 21, 2004 MTX EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (2,000) $39.53 — 2,000 Disposed
April 1, 2004 MTX EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (5,000) $39.53 — 5,000 Disposed
Feb. 25, 2004 MTX DEFERRED STOCK COMMON STOCK (1,800) — Feb. 25, 2009 1,800 Acquired
Feb. 25, 2004 MTX EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (5,300) $53.89 — 5,300 Acquired
Dec. 31, 2003 MTX PHANTOM STOCK UNITS COMMON STOCK (37) — — 37 Acquired
Nov. 5, 2003 MTX DEFERRED STOCK [F1] COMMON STOCK (1,600) — — 1,600 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 2 holdings

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)→ COMMON STOCK — Direct
April 2, 2004 MTX EMPLOYEE STOCK OPTION (RIGHT TO BUY)→ COMMON STOCK — Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

MTX

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2011 $315,000 — $289,970 $164,747 — — — $1,614,287

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.