Gerard T Mazurkiewicz

Insider

First SEC filing: June 2, 2021 · Latest: June 2, 2021

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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

GHM selling Sept. 7, 2018

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 27 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

27 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 1, 2021	GHM	A	3,265	—	—	21,088 Direct	+18.32%	Acquired	(price as of 2026-08-21)
June 9, 2020	GHM	A	3,543	—	—	17,823 Direct	+24.81%	Acquired	(price as of 2026-08-21)
May 29, 2019	GHM	A	2,450	—	—	14,280 Direct	+20.71%	Acquired	(price as of 2026-08-21)
Sept. 7, 2018	GHM	S	300	$26.44	$7,932	11,830 Direct	-2.47%	Disposed	281.9% (price as of 2026-08-21)
May 30, 2018	GHM	A	955	—	—	12,130 Direct	+8.55%	Acquired	(price as of 2026-08-21)
Aug. 31, 2017	GHM	S	300	$20.25	$6,075	11,175 Direct	-2.61%	Disposed	398.6% (price as of 2026-08-21)
May 31, 2017	GHM	A	1,194	—	—	11,475 Direct	+11.61%	Acquired	(price as of 2026-08-21)
Feb. 27, 2017	GHM	M	2,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 27, 2017	GHM	S	1,750	$22.40	$39,200	10,281 Direct	-14.55%	Disposed	350.8% (price as of 2026-08-21)
Feb. 27, 2017	GHM	M	2,500	$12.52	$31,300	12,031 Direct	+26.23%	Acquired	706.5% (price as of 2026-08-21)
Nov. 21, 2016	GHM	M	2,500	—	—	2,500 Direct	-50.00%	Disposed	(price as of 2026-08-21)
Nov. 21, 2016	GHM	S	1,900	$20.30	$38,570	9,531 Direct	-16.62%	Disposed	397.4% (price as of 2026-08-21)
Nov. 21, 2016	GHM	M	2,500	$12.52	$31,300	11,431 Direct	+27.99%	Acquired	706.5% (price as of 2026-08-21)
Sept. 6, 2016	GHM	S	500	$19.50	$9,750	8,931 Direct	-5.30%	Disposed	417.8% (price as of 2026-08-21)
May 24, 2016	GHM	A	1,351	—	—	9,431 Direct	+16.72%	Acquired	(price as of 2026-08-21)
Aug. 24, 2015	GHM	S	300	$17.16	$5,148	8,080 Direct	-3.58%	Disposed	488.4% (price as of 2026-08-21)
May 28, 2015	GHM	A	1,081	—	—	8,380 Direct	+14.81%	Acquired	(price as of 2026-08-21)
Dec. 4, 2014	GHM	G	140	—	—	7,299 Direct	-1.88%	Disposed	(price as of 2026-08-21)
Dec. 3, 2014	GHM	G	260	—	—	7,439 Direct	-3.38%	Disposed	(price as of 2026-08-21)
May 29, 2014	GHM	A	885	—	—	7,699 Direct	+12.99%	Acquired	(price as of 2026-08-21)
Dec. 5, 2013	GHM	G	330	—	—	6,814 Direct	-4.62%	Disposed	(price as of 2026-08-21)
May 30, 2013	GHM	A	1,042	—	—	7,144 Direct	+17.08%	Acquired	(price as of 2026-08-21)
Feb. 25, 2013	GHM	S	1,200	$23.50	$28,200	6,102 Direct	-16.43%	Disposed	329.7% (price as of 2026-08-21)
July 25, 2012	GHM	A	546	—	—	546 Direct	—	Acquired	(price as of 2026-08-21)
May 30, 2012	GHM	A	1,340	—	—	7,302 Direct	+22.48%	Acquired	(price as of 2026-08-21)
July 28, 2011	GHM	A	490	—	—	490 Direct	—	Acquired	(price as of 2026-08-21)
July 28, 2011	GHM	A	7	—	—	7 Direct	—	Acquired	(price as of 2026-08-21)
May 26, 2011	GHM	A	1,180	—	—	5,962 Direct	+24.68%	Acquired	(price as of 2026-08-21)
July 29, 2010	GHM	A	667	—	—	667 Direct	—	Acquired	(price as of 2026-08-21)
July 29, 2010	GHM	A	5	—	—	5 Direct	—	Acquired	(price as of 2026-08-21)
May 20, 2010	GHM	A	1,639	—	—	4,782 Direct	+52.15%	Acquired	(price as of 2026-08-21)
May 28, 2009	GHM	A	1,643	—	—	3,143 Direct	+109.53%	Acquired	(price as of 2026-08-21)
Nov. 17, 2008	GHM	P	1,500	$9.84	$14,760	1,500 Direct	—	Acquired	926.1% (price as of 2026-08-21)
May 29, 2008	GHM	A	462	—	—	462 Direct	—	Acquired	(price as of 2026-08-21)
Aug. 15, 2007	GHM	A	2,000	—	—	2,000 Direct	—	Acquired	(price as of 2026-08-21)

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. 27, 2017	GHM	Stock Option (Right to Buy) [F1]	Common Stock (2,500)	$12.52	Aug. 15, 2017	2,500	Disposed
Nov. 21, 2016	GHM	Stock Option (Right to Buy) [F1]	Common Stock (2,500)	$12.52	Aug. 15, 2017	2,500	Disposed
July 25, 2012	GHM	Share Equivalent Unit	Common Stock (546)	—	—	546	Acquired
July 28, 2011	GHM	Share Equivalent Unit	Common Stock (490)	—	—	490	Acquired
July 28, 2011	GHM	Share Equivalent Unit	Common Stock (7)	—	—	7	Acquired
July 29, 2010	GHM	Share Equivalent Unit	Common Stock (667)	—	—	667	Acquired
July 29, 2010	GHM	Share Equivalent Unit	Common Stock (5)	—	—	5	Acquired
May 29, 2008	GHM	Stock Option (Right to Buy)	Common Stock	$61.75	May 29, 2018	462	Acquired
Aug. 15, 2007	GHM	Stock Option (Right to Buy)	Common Stock, $.10 par value	$31.30	Aug. 15, 2017	2,000	Acquired

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