Glen R Bressner

Insider

First SEC filing: Jan. 29, 2024 · Latest: Jan. 29, 2024

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

ISSC buying Aug. 15, 2024

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 37 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

37 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 20, 2026	ISSC	A	6,300	$15.93	$100,359	153,655 Direct	+4.28%	Acquired	36.6% (price as of 2026-08-20)
April 16, 2026	ISSC	A	5,618	—	—	147,355 Direct	+3.96%	Acquired	(price as of 2026-08-20)
April 17, 2025	ISSC	A	13,536	—	—	141,737 Direct	+10.56%	Acquired	(price as of 2026-08-20)
Aug. 15, 2024	ISSC	P	4,000	$6.83	$27,320	128,201 Direct	+3.22%	Acquired	218.6% (price as of 2026-08-20)
Aug. 14, 2024	ISSC	P	1,000	$6.71	$6,710	124,201 Direct	+0.81%	Acquired	224.3% (price as of 2026-08-20)
Aug. 13, 2024	ISSC	P	5,000	$6.53	$32,650	123,201 Direct	+4.23%	Acquired	233.2% (price as of 2026-08-20)
May 22, 2024	ISSC	P	2,109	$5.63	$11,874	118,201 Direct	+1.82%	Acquired	286.5% (price as of 2026-08-20)
May 21, 2024	ISSC	P	12,891	$5.55	$71,545	116,092 Direct	+12.49%	Acquired	292.1% (price as of 2026-08-20)
April 18, 2024	ISSC	A	11,244	—	—	103,201 Direct	+12.23%	Acquired	(price as of 2026-08-20)
April 13, 2024	ISSC	M	6,868	—	—	91,957 Direct	+8.07%	Acquired	(price as of 2026-08-20)
Sept. 8, 2023	ISSC	P	10,000	$7.85	$78,500	81,393 Direct	+14.01%	Acquired	177.2% (price as of 2026-08-20)
May 18, 2023	ISSC	P	1,742	$8.10	$14,110	75,089 Direct	+2.38%	Acquired	168.6% (price as of 2026-08-20)
May 18, 2023	ISSC	P	1,319	$7.15	$9,431	71,393 Direct	+1.88%	Acquired	204.3% (price as of 2026-08-20)
May 18, 2023	ISSC	S	1,319	$7.15	$9,431	68,755 Direct	-1.88%	Disposed	204.3% (price as of 2026-08-20)
May 16, 2023	ISSC	P	1,319	$7.21	$9,510	73,347 Direct	+1.83%	Acquired	201.8% (price as of 2026-08-20)
May 15, 2023	ISSC	P	3,681	$7.15	$26,319	72,028 Direct	+5.39%	Acquired	204.3% (price as of 2026-08-20)
April 18, 2023	ISSC	A	1,742	—	—	70,074 Direct	+2.55%	Acquired	(price as of 2026-08-20)
April 13, 2023	ISSC	A	6,868	—	—	6,868 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 3, 2023	ISSC	A	6,088	—	—	68,332 Direct	+9.78%	Acquired	(price as of 2026-08-20)
May 16, 2022	ISSC	S	15,000	$9.48	$142,200	62,244 Direct	-19.42%	Disposed	129.5% (price as of 2026-08-20)
May 16, 2022	ISSC	S	30,000	$9.48	$284,400	77,244 Direct	-27.97%	Disposed	129.5% (price as of 2026-08-20)
Jan. 3, 2022	ISSC	A	6,349	—	—	107,244 Direct	+6.29%	Acquired	(price as of 2026-08-20)
Feb. 22, 2021	ISSC	S	1,139	$6.86	$7,814	100,895 Direct	-1.12%	Disposed	217.2% (price as of 2026-08-20)
Feb. 19, 2021	ISSC	S	8,279	$6.88	$56,960	102,034 Direct	-7.51%	Disposed	216.3% (price as of 2026-08-20)
Feb. 18, 2021	ISSC	S	1,200	$6.75	$8,100	110,313 Direct	-1.08%	Disposed	222.4% (price as of 2026-08-20)
Feb. 17, 2021	ISSC	S	900	$6.77	$6,093	111,513 Direct	-0.80%	Disposed	221.4% (price as of 2026-08-20)
Feb. 16, 2021	ISSC	S	6,500	$6.78	$44,070	112,413 Direct	-5.47%	Disposed	220.9% (price as of 2026-08-20)
Jan. 4, 2021	ISSC	A	6,872	—	—	118,913 Direct	+6.13%	Acquired	(price as of 2026-08-20)
Dec. 17, 2020	ISSC	S	4,276	$7.80	$33,353	112,041 Direct	-3.68%	Disposed	179.0% (price as of 2026-08-20)
Jan. 2, 2020	ISSC	A	18,264	—	—	116,317 Direct	+18.63%	Acquired	(price as of 2026-08-20)
May 21, 2019	ISSC	S	1,000	$4.63	$4,630	98,053 Direct	-1.01%	Disposed	370.0% (price as of 2026-08-20)
May 17, 2019	ISSC	S	7,445	$4.60	$34,247	99,053 Direct	-6.99%	Disposed	373.0% (price as of 2026-08-20)
May 16, 2019	ISSC	S	16,555	$4.66	$77,146	106,498 Direct	-13.45%	Disposed	367.0% (price as of 2026-08-20)
Jan. 2, 2019	ISSC	A	13,377	—	—	123,053 Direct	+12.20%	Acquired	(price as of 2026-08-20)
Jan. 2, 2018	ISSC	A	11,494	—	—	109,676 Direct	+11.71%	Acquired	(price as of 2026-08-20)
Jan. 2, 2017	ISSC	M	14,234	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 2, 2017	ISSC	M	14,234	—	—	98,182 Direct	+16.96%	Acquired	(price as of 2026-08-20)
Jan. 4, 2016	ISSC	A	12,307	—	—	83,948 Direct	+17.18%	Acquired	(price as of 2026-08-20)
Nov. 12, 2015	ISSC	A	14,234	—	—	14,234 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 31, 2014	ISSC	A	4,328	—	—	71,641 Direct	+6.43%	Acquired	(price as of 2026-08-20)
Nov. 15, 2013	ISSC	A	2,577	—	—	67,313 Direct	+3.98%	Acquired	(price as of 2026-08-20)
Nov. 15, 2012	ISSC	A	10,050	—	—	64,736 Direct	+18.38%	Acquired	(price as of 2026-08-20)
Nov. 17, 2011	ISSC	A	8,422	—	—	54,686 Direct	+18.20%	Acquired	(price as of 2026-08-20)
Nov. 11, 2010	ISSC	A	8,677	—	—	46,264 Direct	+23.09%	Acquired	(price as of 2026-08-20)
Oct. 1, 2009	ISSC	A	8,230	—	—	37,587 Direct	+28.03%	Acquired	(price as of 2026-08-20)
Feb. 6, 2009	ISSC	P	2,100	$3.36	$7,056	29,357 Direct	+7.70%	Acquired	547.6% (price as of 2026-08-20)
Feb. 3, 2009	ISSC	P	300	$3.27	$981	27,257 Direct	+1.11%	Acquired	565.4% (price as of 2026-08-20)
Feb. 3, 2009	ISSC	P	300	$3.20	$960	26,957 Direct	+1.13%	Acquired	580.0% (price as of 2026-08-20)
Feb. 3, 2009	ISSC	P	2,000	$3.27	$6,540	26,657 Direct	+8.11%	Acquired	565.4% (price as of 2026-08-20)
Feb. 3, 2009	ISSC	P	1,000	$3.25	$3,250	24,657 Direct	+4.23%	Acquired	569.5% (price as of 2026-08-20)
Oct. 1, 2008	ISSC	A	7,246	—	—	23,657 Direct	+44.15%	Acquired	(price as of 2026-08-20)
Oct. 2, 2007	ISSC	A	2,105	—	—	22,274 Direct	+10.44%	Acquired	(price as of 2026-08-20)
June 12, 2007	ISSC	S	5,864	$26.28	$154,106	14,832 Direct	-28.33%	Disposed	-17.2% (price as of 2026-08-20)
June 12, 2007	ISSC	D	5,864	$26.28	$154,106	12,919 Direct	-31.22%	Disposed	-17.2% (price as of 2026-08-20)
June 11, 2007	ISSC	D	6,600	$26.77	$176,682	18,783 Direct	-26.00%	Disposed	-18.7% (price as of 2026-08-20)
Oct. 4, 2006	ISSC	A	2,772	—	—	26,769 Direct	+11.55%	Acquired	(price as of 2026-08-20)
Feb. 2, 2006	ISSC	A	2,500	$14.52	$36,300	22,030 Direct	+12.80%	Acquired	49.9% (price as of 2026-08-20)
Oct. 14, 2005	ISSC	A	2,623	—	—	21,497 Direct	+13.90%	Acquired	(price as of 2026-08-20)
Oct. 1, 2004	ISSC	A	999	—	—	12,433 Direct	+8.74%	Acquired	(price as of 2026-08-20)
Sept. 1, 2004	ISSC	D	2,000	$27.28	$54,560	11,434 Direct	-14.89%	Disposed	19.6% (price as of 2026-08-20)
Aug. 31, 2004	ISSC	D	1,000	$26.95	$26,950	13,434 Direct	-6.93%	Disposed	21.1% (price as of 2026-08-20)
Aug. 30, 2004	ISSC	D	500	$26.90	$13,450	14,434 Direct	-3.35%	Disposed	21.3% (price as of 2026-08-20)
Feb. 26, 2004	ISSC	A	3,125	—	—	14,934 Direct	+26.46%	Acquired	(price as of 2026-08-20)
Dec. 10, 2003	ISSC	D	400	$16.09	$6,436	15,009 Direct	-2.60%	Disposed	102.9% (price as of 2026-08-20)
Dec. 10, 2003	ISSC	D	3,900	$15.95	$62,205	15,409 Direct	-20.20%	Disposed	104.6% (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
April 13, 2023	ISSC	Restricted Stock Units	Common Stock (6,868)	—	—	6,868	Acquired
Jan. 2, 2017	ISSC	Restricted Stock Units	Common Stock (14,234)	—	—	14,234	Disposed
Nov. 12, 2015	ISSC	Restricted Stock Units [F1]	Common Stock (14,234)	—	—	14,234	Acquired

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