William Js Wilkins

Insider

First SEC filing: June 11, 2007 · Latest: June 5, 2009

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

MTX selling March 3, 2011

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 43 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

43 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 3, 2011	MTX	M	7,000	$64.16	$449,120	19,025 Direct	+58.21%	Acquired	120.3% (price as of 2026-08-20)
March 3, 2011	MTX	M	8,000	$39.71	$317,680	27,025 Direct	+42.05%	Acquired	256.0% (price as of 2026-08-20)
March 3, 2011	MTX	M	3,244	$49.12	$159,345	30,269 Direct	+12.00%	Acquired	187.8% (price as of 2026-08-20)
March 3, 2011	MTX	S	18,546	$65.90	$1,222,181	11,723 Direct	-61.27%	Disposed	114.5% (price as of 2026-08-20)
March 3, 2011	MTX	M	3,000	—	—	36,143 Direct	-7.66%	Disposed	(price as of 2026-08-20)
March 3, 2011	MTX	M	7,000	—	—	29,143 Direct	-19.37%	Disposed	(price as of 2026-08-20)
March 3, 2011	MTX	M	8,000	—	—	21,143 Direct	-27.45%	Disposed	(price as of 2026-08-20)
March 3, 2011	MTX	M	3,244	—	—	17,899 Direct	-15.34%	Disposed	(price as of 2026-08-20)
March 3, 2011	MTX	M	3,000	$64.48	$193,440	12,025 Direct	+33.24%	Acquired	119.2% (price as of 2026-08-20)
Feb. 27, 2011	MTX	M	1,500	—	—	9,484 Direct	+18.79%	Acquired	(price as of 2026-08-20)
Feb. 27, 2011	MTX	F	459	$64.32	$29,523	9,025 Direct	-4.84%	Disposed	119.8% (price as of 2026-08-20)
Feb. 27, 2011	MTX	M	1,500	—	—	10,510 Direct	-12.49%	Disposed	(price as of 2026-08-20)
Jan. 28, 2011	MTX	M	2,367	—	—	8,709 Direct	+37.32%	Acquired	(price as of 2026-08-20)
Jan. 28, 2011	MTX	F	725	$63.42	$45,980	7,984 Direct	-8.32%	Disposed	122.9% (price as of 2026-08-20)
Jan. 28, 2011	MTX	M	2,367	—	—	12,010 Direct	-16.46%	Disposed	(price as of 2026-08-20)
Jan. 27, 2011	MTX	M	1,900	—	—	6,978 Direct	+37.42%	Acquired	(price as of 2026-08-20)
Jan. 27, 2011	MTX	F	636	$64.45	$40,990	6,342 Direct	-9.11%	Disposed	119.3% (price as of 2026-08-20)
Jan. 27, 2011	MTX	M	1,900	—	—	14,377 Direct	-11.67%	Disposed	(price as of 2026-08-20)
Jan. 26, 2011	MTX	A	4,344	—	—	16,277 Direct	+36.40%	Acquired	(price as of 2026-08-20)
Jan. 26, 2011	MTX	A	7,413	—	—	39,143 Direct	+23.36%	Acquired	(price as of 2026-08-20)
Sept. 14, 2010	MTX	S	444	$56.83	$25,233	0 Indirect	-100.00%	Disposed	148.7% (price as of 2026-08-20)
June 4, 2010	MTX	M	700	—	—	11,933 Direct	-5.54%	Disposed	(price as of 2026-08-20)
June 4, 2010	MTX	F	214	$49.73	$10,642	5,078 Direct	-4.04%	Disposed	184.3% (price as of 2026-08-20)
June 4, 2010	MTX	M	700	—	—	5,292 Direct	+15.24%	Acquired	(price as of 2026-08-20)
March 1, 2010	MTX	M	1,500	—	—	12,633 Direct	-10.61%	Disposed	(price as of 2026-08-20)
March 1, 2010	MTX	F	459	$49.40	$22,675	4,592 Direct	-9.09%	Disposed	186.2% (price as of 2026-08-20)
March 1, 2010	MTX	M	1,500	—	—	5,051 Direct	+42.24%	Acquired	(price as of 2026-08-20)
Jan. 28, 2010	MTX	M	2,367	—	—	8,433 Direct	-21.92%	Disposed	(price as of 2026-08-20)
Jan. 28, 2010	MTX	F	830	$48.27	$40,064	3,551 Direct	-18.95%	Disposed	192.9% (price as of 2026-08-20)
Jan. 28, 2010	MTX	M	2,367	—	—	4,381 Direct	+117.53%	Acquired	(price as of 2026-08-20)
Jan. 27, 2010	MTX	A	5,700	—	—	14,133 Direct	+67.59%	Acquired	(price as of 2026-08-20)
Jan. 27, 2010	MTX	A	9,730	—	—	31,730 Direct	+44.23%	Acquired	(price as of 2026-08-20)
June 4, 2009	MTX	M	700	—	—	3,700 Direct	-15.91%	Disposed	(price as of 2026-08-20)
June 4, 2009	MTX	F	214	$42.12	$9,014	2,014 Direct	-9.61%	Disposed	235.6% (price as of 2026-08-20)
June 4, 2009	MTX	M	700	—	—	2,228 Direct	+45.81%	Acquired	(price as of 2026-08-20)
Feb. 27, 2009	MTX	M	1,500	—	—	1,986 Direct	+308.64%	Acquired	(price as of 2026-08-20)
Feb. 27, 2009	MTX	F	458	$30.30	$13,877	1,528 Direct	-23.06%	Disposed	366.5% (price as of 2026-08-20)
Feb. 27, 2009	MTX	M	1,500	—	—	4,400 Direct	-25.42%	Disposed	(price as of 2026-08-20)
Jan. 28, 2009	MTX	A	7,100	—	—	10,800 Direct	+191.89%	Acquired	(price as of 2026-08-20)
Jan. 28, 2009	MTX	A	12,000	—	—	22,000 Direct	+120.00%	Acquired	(price as of 2026-08-20)
Jan. 14, 2009	MTX	M	700	—	—	5,900 Direct	-10.61%	Disposed	(price as of 2026-08-20)
Jan. 14, 2009	MTX	F	214	$69.92	$14,963	486 Direct	-30.57%	Disposed	102.2% (price as of 2026-08-20)
Jan. 14, 2009	MTX	M	700	—	—	700 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 27, 2008	MTX	A	4,500	—	—	6,600 Direct	+214.29%	Acquired	(price as of 2026-08-20)
Feb. 27, 2008	MTX	A	7,000	—	—	10,000 Direct	+233.33%	Acquired	(price as of 2026-08-20)

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 3, 2011	MTX	Employee Stock Option (Right to Buy)	Common Stock (3,000)	$64.48	June 4, 2017	3,000	Disposed
March 3, 2011	MTX	Employee Stock Option (Right to Buy)	Common Stock (7,000)	$64.16	Feb. 28, 2018	7,000	Disposed
March 3, 2011	MTX	Employee Stock Option (Right to Buy)	Common Stock (8,000)	$39.71	Jan. 28, 2019	8,000	Disposed
March 3, 2011	MTX	Employee Stock Option (Right to Buy)	Common Stock (3,244)	$49.12	Jan. 27, 2020	3,244	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 (2,367)	—	—	2,367	Disposed
Jan. 27, 2011	MTX	Deferred Restricted Stock Units (DRSUs)	Common Stock (1,900)	—	—	1,900	Disposed
Jan. 26, 2011	MTX	Deferred Restricted Stock Units (DRSUs)	Common Stock (4,344)	—	—	4,344	Acquired
Jan. 26, 2011	MTX	Employee Stock Option (Right to Buy)	Common Stock (7,413)	$64.46	Jan. 26, 2021	7,413	Acquired
June 4, 2010	MTX	Deferred Restricted Stock Units (DRSUs)	Common Stock (700)	—	—	700	Disposed
March 1, 2010	MTX	Deferred Restricted Stock Units (DRSUs)	Common Stock (1,500)	—	—	1,500	Disposed
Jan. 28, 2010	MTX	DRSUs	Common Stock (2,367)	—	—	2,367	Disposed
Jan. 27, 2010	MTX	Deferred Restricted Stock Units (DRSUs)	Common Stock (5,700)	—	—	5,700	Acquired
Jan. 27, 2010	MTX	Employee Stock Option (Right to Buy)	Common Stock (9,730)	$49.12	Jan. 27, 2010	9,730	Acquired
June 4, 2009	MTX	Deferred Restricted Stock Units ("DRSUs")	Common Stock (700)	—	—	700	Disposed
Feb. 27, 2009	MTX	Deferred Restricted Stock Units ("DRSUs")	Common Stock (1,500)	—	—	1,500	Disposed
Jan. 28, 2009	MTX	Deferred Restricted Stock Units (DRSUs)	Common Stock (7,100)	—	—	7,100	Acquired
Jan. 28, 2009	MTX	Employee Stock Option (Right to Buy)	Common Stock (12,000)	$39.71	Jan. 28, 2019	12,000	Acquired
Jan. 14, 2009	MTX	Deferred Restricted Stock Units ("DRSUs")	Common Stock (700)	—	—	700	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 (7,000)	$64.16	Feb. 27, 2018	7,000	Acquired

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

Initial ownership (Form 3) 3 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
June 11, 2007	MTX	Common Stock	0	Direct
June 11, 2007	MTX	Employee Stock Option (Right to Buy)→ Common Stock (3,000)	3,000	Direct
June 11, 2007	MTX	Deferred Restricted Stock Units ("DRSUs")→ Common Stock (2,100)	2,100	Direct