David W Grzelak

Insider

First SEC filing: June 12, 2015 · Latest: Jan. 25, 2019

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

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 39 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

39 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Nov. 19, 2019	ALG	G	246	—	—	8,662 Indirect	-2.76%	Disposed	(price as of 2026-08-20)
Sept. 20, 2019	HLIO	A	750	$42.98	$32,235	14,750 Direct	+5.36%	Acquired	74.1% (price as of 2026-08-20)
June 14, 2019	HLIO	A	1,000	$44.73	$44,730	14,000 Direct	+7.69%	Acquired	67.3% (price as of 2026-08-20)
May 6, 2019	ALG	A	900	—	—	8,908 Indirect	+11.24%	Acquired	(price as of 2026-08-20)
March 22, 2019	ALG	S	8,000	$97.82	$782,560	8,008 Indirect	-49.98%	Disposed	64.3% (price as of 2026-08-20)
March 21, 2019	ALG	M	8,000	$11.45	$91,600	16,008 Indirect	+99.90%	Acquired	1303.5% (price as of 2026-08-20)
March 21, 2019	ALG	M	8,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 8, 2019	HLIO	A	1,000	$48.59	$48,590	13,000 Direct	+8.33%	Acquired	54.0% (price as of 2026-08-20)
Dec. 18, 2018	HLIO	A	1,000	$36.43	$36,430	12,000 Direct	+9.09%	Acquired	105.4% (price as of 2026-08-20)
Sept. 21, 2018	HLIO	A	1,000	$57.56	$57,560	11,000 Direct	+10.00%	Acquired	30.0% (price as of 2026-08-20)
June 1, 2018	HLIO	A	1,000	$50.37	$50,370	10,000 Direct	+11.11%	Acquired	48.6% (price as of 2026-08-20)
May 9, 2018	ALG	A	800	—	—	8,345 Indirect	+10.60%	Acquired	(price as of 2026-08-20)
March 16, 2018	HLIO	A	1,000	$55.02	$55,020	9,000 Direct	+12.50%	Acquired	36.0% (price as of 2026-08-20)
Dec. 13, 2017	ALG	G	186	—	—	4,814 Indirect	-3.72%	Disposed	(price as of 2026-08-20)
Dec. 5, 2017	HLIO	A	1,000	$58.78	$58,780	8,000 Direct	+14.29%	Acquired	27.3% (price as of 2026-08-20)
Sept. 22, 2017	HLIO	A	1,000	$52.68	$52,680	7,000 Direct	+16.67%	Acquired	42.1% (price as of 2026-08-20)
June 19, 2017	ALG	S	2,201	$92.18	$202,888	1,325 Direct	-62.42%	Disposed	74.3% (price as of 2026-08-20)
June 6, 2017	HLIO	A	750	$43.14	$32,355	6,000 Direct	+14.29%	Acquired	73.5% (price as of 2026-08-20)
May 9, 2017	ALG	A	1,000	—	—	3,526 Direct	+39.59%	Acquired	(price as of 2026-08-20)
April 17, 2017	ALG	M	5,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 17, 2017	ALG	M	5,000	$25.18	$125,900	5,000 Indirect	—	Acquired	538.2% (price as of 2026-08-20)
March 3, 2017	HLIO	A	750	$35.47	$26,602	5,250 Direct	+16.67%	Acquired	111.0% (price as of 2026-08-20)
Dec. 10, 2016	HLIO	A	750	$41.36	$31,020	4,500 Direct	+20.00%	Acquired	80.9% (price as of 2026-08-20)
Nov. 18, 2016	ALG	G	270	—	—	1,230 Indirect	-18.00%	Disposed	(price as of 2026-08-20)
Sept. 8, 2016	HLIO	A	750	$30.75	$23,062	3,750 Direct	+25.00%	Acquired	143.4% (price as of 2026-08-20)
June 17, 2016	ALG	S	926	$64.33	$59,570	1,500 Indirect	-38.17%	Disposed	149.8% (price as of 2026-08-20)
June 14, 2016	ALG	S	676	$62.25	$42,081	2,426 Indirect	-21.79%	Disposed	158.2% (price as of 2026-08-20)
June 14, 2016	ALG	S	2,500	$61.75	$154,375	3,102 Indirect	-44.63%	Disposed	160.2% (price as of 2026-08-20)
June 8, 2016	ALG	M	2,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 8, 2016	ALG	M	2,500	$25.02	$62,550	6,304 Direct	+65.72%	Acquired	542.3% (price as of 2026-08-20)
May 24, 2016	HLIO	A	750	$29.58	$22,185	3,000 Direct	+33.33%	Acquired	153.0% (price as of 2026-08-20)
May 9, 2016	ALG	A	1,100	—	—	3,804 Direct	+40.68%	Acquired	(price as of 2026-08-20)
March 14, 2016	HLIO	A	750	$33.91	$25,432	2,250 Direct	+50.00%	Acquired	120.7% (price as of 2026-08-20)
Dec. 11, 2015	HLIO	A	750	$30.82	$23,115	1,500 Direct	+100.00%	Acquired	142.8% (price as of 2026-08-20)
Sept. 9, 2015	HLIO	A	750	$30.34	$22,755	750 Direct	—	Acquired	146.7% (price as of 2026-08-20)
May 11, 2015	ALG	A	1,000	—	—	4,704 Indirect	+27.00%	Acquired	(price as of 2026-08-20)
May 11, 2015	ALG	A	1,000	—	—	1,000 Indirect	—	Acquired	(price as of 2026-08-20)
May 12, 2014	ALG	A	1,000	$53.51	$53,510	3,704 Direct	+36.98%	Acquired	200.3% (price as of 2026-08-20)
May 12, 2014	ALG	A	1,000	$53.51	$53,510	3,704 Indirect	+36.98%	Acquired	200.3% (price as of 2026-08-20)
May 6, 2013	ALG	A	704	—	—	2,704 Direct	+35.20%	Acquired	(price as of 2026-08-20)
May 9, 2011	ALG	A	2,000	—	—	2,000 Direct	—	Acquired	(price as of 2026-08-20)
May 11, 2009	ALG	A	8,000	—	—	8,000 Direct	—	Acquired	(price as of 2026-08-20)
May 7, 2007	ALG	A	5,000	—	—	5,000 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 8, 2006	ALG	A	2,500	—	—	2,500 Direct	—	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 21, 2019	ALG	Derivative (Right to Buy)	Common Stock (8,000)	$11.45	May 11, 2019	8,000	Disposed
April 17, 2017	ALG	Derivative (Right to Buy)	Common Stock (5,000)	$25.18	May 6, 2017	5,000	Disposed
June 8, 2016	ALG	Derivative (Right to Buy)	Common Stock (2,500)	$25.02	Aug. 7, 2016	2,500	Disposed
May 11, 2015	ALG	Restricted Stock Units [F1]	Common Stock (1,000)	—	—	1,000	Acquired
May 11, 2009	ALG	Derivative (Right to Buy) for directors	Common Stock (8,000)	$11.45	May 11, 2019	8,000	Acquired
May 7, 2007	ALG	Derivative (Right to Buy) for directors	Common Stock (5,000)	$25.18	May 6, 2017	5,000	Acquired
Aug. 8, 2006	ALG	Derivative (Right to Buy) for directors	Common Stock (2,500)	$25.02	Aug. 7, 2016	2,500	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
June 12, 2015	HLIO	Common Stock	0	Direct