John Sherwin JR

CIK 1209387 · View on SEC EDGAR ↗

Insider

First SEC filing: Feb. 6, 2013 · Latest: Feb. 6, 2013

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.

Insider at

MTRN selling Aug. 3, 2011

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 30 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

30 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 6, 2013	MTRN	A	19	$27.96	$531	7,196 Indirect	+0.26%	Acquired	740.9% (price as of 2026-08-20)
Nov. 21, 2012	MTRN	D	5,991	$19.60	$117,424	2,654 Direct	-69.30%	Disposed	1099.5% (price as of 2026-08-20)
May 3, 2012	MTRN	A	2,654	$24.50	$65,023	7,751 Direct	+52.07%	Acquired	859.6% (price as of 2026-08-20)
Aug. 3, 2011	MTRN	S	2,244	$33.94	$76,161	5,077 Direct	-30.65%	Disposed	592.7% (price as of 2026-08-20)
May 5, 2011	MTRN	A	1,712	$37.98	$65,022	7,399 Direct	+30.10%	Acquired	519.0% (price as of 2026-08-20)
Nov. 8, 2010	MTRN	S	4,000	$36.25	$145,000	0 Direct	-100.00%	Disposed	548.6% (price as of 2026-08-20)
Nov. 8, 2010	MTRN	A	2,000	—	—	2,000 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 8, 2010	MTRN	A	2,000	—	—	2,000 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 8, 2010	MTRN	D	4,000	$36.25	$145,000	0 Direct	-100.00%	Disposed	548.6% (price as of 2026-08-20)
Nov. 8, 2010	MTRN	A	2,000	$16.10	$32,200	4,000 Direct	+100.00%	Acquired	1360.3% (price as of 2026-08-20)
Nov. 8, 2010	MTRN	A	2,000	$20.64	$41,280	2,000 Direct	—	Acquired	1039.1% (price as of 2026-08-20)
May 6, 2010	MTRN	A	2,244	$26.74	$60,005	5,687 Direct	+65.18%	Acquired	779.2% (price as of 2026-08-20)
May 13, 2009	MTRN	D	600	$15.60	$9,360	3,443 Direct	-14.84%	Disposed	1407.1% (price as of 2026-08-20)
May 13, 2009	MTRN	D	798	$15.60	$12,449	4,043 Direct	-16.48%	Disposed	1407.1% (price as of 2026-08-20)
May 7, 2009	MTRN	A	2,464	$18.27	$45,017	4,841 Direct	+103.66%	Acquired	1186.9% (price as of 2026-08-20)
May 8, 2008	MTRN	A	1,398	$32.19	$45,002	2,377 Direct	+142.80%	Acquired	630.4% (price as of 2026-08-20)
Aug. 29, 2007	MTRN	S	890	$45.20	$40,228	4,795 Indirect	-15.66%	Disposed	420.1% (price as of 2026-08-20)
Aug. 29, 2007	MTRN	S	600	$45.16	$27,096	5,685 Indirect	-9.55%	Disposed	420.6% (price as of 2026-08-20)
Aug. 29, 2007	MTRN	S	1,510	$45.15	$68,176	6,285 Indirect	-19.37%	Disposed	420.7% (price as of 2026-08-20)
May 2, 2007	MTRN	A	979	$46.01	$45,044	2,852 Direct	+52.27%	Acquired	411.0% (price as of 2026-08-20)
Feb. 16, 2007	MTRN	M	2,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 16, 2007	MTRN	M	2,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 16, 2007	MTRN	M	2,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 16, 2007	MTRN	S	100	$44.45	$4,445	0 Direct	-100.00%	Disposed	428.9% (price as of 2026-08-20)
Feb. 16, 2007	MTRN	S	100	$44.44	$4,444	100 Direct	-50.00%	Disposed	429.0% (price as of 2026-08-20)
Feb. 16, 2007	MTRN	S	900	$44.38	$39,942	200 Direct	-81.82%	Disposed	429.8% (price as of 2026-08-20)
Feb. 16, 2007	MTRN	S	200	$44.27	$8,854	1,100 Direct	-15.38%	Disposed	431.1% (price as of 2026-08-20)
Feb. 16, 2007	MTRN	S	4,700	$44.23	$207,881	1,300 Direct	-78.33%	Disposed	431.6% (price as of 2026-08-20)
Feb. 16, 2007	MTRN	M	2,000	$14.80	$29,600	6,000 Direct	+50.00%	Acquired	1488.6% (price as of 2026-08-20)
Feb. 16, 2007	MTRN	M	2,000	$12.36	$24,720	4,000 Direct	+100.00%	Acquired	1802.2% (price as of 2026-08-20)
Feb. 16, 2007	MTRN	M	2,000	$5.61	$11,220	2,000 Direct	—	Acquired	4090.9% (price as of 2026-08-20)
May 2, 2006	MTRN	A	1,873	$24.03	$45,008	1,873 Direct	—	Acquired	878.4% (price as of 2026-08-20)
Aug. 10, 2005	MTRN	S	3,081	$16.91	$52,100	0 Indirect	-100.00%	Disposed	1290.3% (price as of 2026-08-20)
May 4, 2005	MTRN	A	500	$14.80	$7,400	7,101 Indirect	+7.57%	Acquired	1488.6% (price as of 2026-08-20)
May 4, 2005	MTRN	A	500	$14.85	$7,425	7,101 Indirect	+7.57%	Acquired	1483.2% (price as of 2026-08-20)
May 3, 2005	MTRN	A	2,000	$14.59	$29,180	2,000 Direct	—	Acquired	1511.4% (price as of 2026-08-20)
May 10, 2004	MTRN	A	500	$15.85	$7,925	6,601 Indirect	+8.20%	Acquired	1383.3% (price as of 2026-08-20)
May 5, 2004	MTRN	A	500	$16.10	$8,050	7,101 Indirect	+7.57%	Acquired	1360.3% (price as of 2026-08-20)
May 5, 2004	MTRN	A	2,000	$16.12	$32,240	2,000 Direct	—	Acquired	1358.5% (price as of 2026-08-20)
May 7, 2003	MTRN	A	500	$5.61	$2,805	7,101 Indirect	+7.57%	Acquired	4090.9% (price as of 2026-08-20)
May 8, 2002	MTRN	A	500	$12.36	$6,180	7,101 Indirect	+7.57%	Acquired	1802.2% (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
Nov. 8, 2010	MTRN	Stock Option (Right to Buy)	common stock (2,000)	$16.10	May 5, 2014	2,000	Acquired
Nov. 8, 2010	MTRN	Stock Option (Right to Buy)	common stock (2,000)	$20.60	May 2, 2011	2,000	Acquired
Feb. 16, 2007	MTRN	Employee Stock Option (Right to buy)	common stock (2,000)	$14.80	May 4, 2015	2,000	Disposed
Feb. 16, 2007	MTRN	Employee Stock option (right to buy)	common stock (2,000)	$12.36	May 8, 2012	2,000	Disposed
Feb. 16, 2007	MTRN	Employee Stock Option (Right to buy)	common stock (2,000)	$5.61	May 7, 2013	2,000	Disposed
May 3, 2005	MTRN	Brush Engineered Materials Inc.	common stock	$14.59	May 3, 2015	2,000	Acquired
May 5, 2004	MTRN	Brush Engineered Materials Inc.	common stock	$16.12	May 5, 2014	2,000	Acquired

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