David Jay Steinberg

Insider

First SEC filing: June 8, 2011 · Latest: June 8, 2011

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 9 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

9 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 4, 2020	CSGP	S	850	$714.00	$606,900	6,456 Direct	-11.63%	Disposed	-53.5% (price as of 2026-08-19)
Sept. 19, 2019	CSGP	A	318	—	—	7,306 Direct	+4.55%	Acquired	(price as of 2026-08-19)
Sept. 20, 2018	CSGP	A	453	—	—	6,988 Direct	+6.93%	Acquired	(price as of 2026-08-19)
Sept. 13, 2017	CSGP	A	691	—	—	6,535 Direct	+11.82%	Acquired	(price as of 2026-08-19)
Sept. 15, 2016	CSGP	A	897	—	—	5,844 Direct	+18.13%	Acquired	(price as of 2026-08-19)
Sept. 9, 2015	CSGP	A	1,072	—	—	4,947 Direct	+27.66%	Acquired	(price as of 2026-08-19)
June 15, 2015	CSGP	S	1,225	$204.82	$250,904	3,875 Direct	-24.02%	Disposed	62.1% (price as of 2026-08-19)
Sept. 11, 2014	CSGP	A	1,203	—	—	5,100 Direct	+30.87%	Acquired	(price as of 2026-08-19)
Sept. 19, 2013	CSGP	A	1,128	—	—	3,897 Direct	+40.74%	Acquired	(price as of 2026-08-19)
Sept. 27, 2012	CSGP	A	1,054	—	—	2,769 Direct	+61.46%	Acquired	(price as of 2026-08-19)
Sept. 8, 2011	CSGP	A	1,715	—	—	1,715 Direct	—	Acquired	(price as of 2026-08-19)

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.

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

Date	Ticker	Security	Shares	Ownership
June 8, 2011	CSGP	Common Stock, par value $0.01 per share	0	Direct