Peter B Lake

Insider

First SEC filing: Feb. 14, 2013 · Latest: Feb. 14, 2014

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.

Insider at

GRC selling Nov. 1, 2013

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 15 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

15 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Nov. 1, 2013	GRC	S	1,500	$40.42	$60,630	3,258 Indirect	-31.53%	Disposed	141.4% (price as of 2026-08-20)
Sept. 24, 2013	GRC	S	3,322	$41.80	$138,860	18,137 Direct	-15.48%	Disposed	133.5% (price as of 2026-08-20)
July 1, 2013	GRC	J	1,000	$31.97	$31,970	21,459 Direct	+4.89%	Acquired	205.2% (price as of 2026-08-20)
Aug. 1, 2011	GRC	J	500	$33.38	$16,690	21,459 Direct	+2.39%	Acquired	192.4% (price as of 2026-08-20)
July 1, 2011	GRC	J	500	$33.15	$16,575	20,959 Direct	+2.44%	Acquired	194.4% (price as of 2026-08-20)
June 10, 2011	GRC	J	23	$30.91	$711	3,172 Direct	+0.73%	Acquired	294.6% (price as of 2026-08-20)
June 10, 2011	GRC	J	630	$30.91	$19,473	3,149 Direct	+25.01%	Acquired	294.6% (price as of 2026-08-20)
June 10, 2011	GRC	J	951	$30.91	$29,395	4,758 Indirect	+24.98%	Acquired	294.6% (price as of 2026-08-20)
June 10, 2011	GRC	J	4,091	$30.91	$126,453	20,459 Direct	+24.99%	Acquired	294.6% (price as of 2026-08-20)
March 15, 2011	GRC	J	18	$36.04	$649	2,519 Direct	+0.72%	Acquired	238.5% (price as of 2026-08-20)
July 1, 2009	GRC	J	500	$20.48	$10,240	18,868 Direct	+2.72%	Acquired	495.6% (price as of 2026-08-20)
March 9, 2009	GRC	P	1,500	$14.93	$22,395	18,368 Direct	+8.89%	Acquired	717.0% (price as of 2026-08-20)
Sept. 16, 2008	GRC	P	100	$36.86	$3,686	3,807 Indirect	+2.70%	Acquired	230.9% (price as of 2026-08-20)
Sept. 16, 2008	GRC	P	3,000	$36.75	$110,250	16,868 Direct	+21.63%	Acquired	231.9% (price as of 2026-08-20)
July 1, 2008	GRC	J	500	$39.65	$19,825	13,868 Direct	+3.74%	Acquired	207.7% (price as of 2026-08-20)
July 1, 2007	GRC	J	500	$32.48	$16,240	10,695 Direct	+4.90%	Acquired	369.5% (price as of 2026-08-20)
Nov. 6, 2006	GRC	S	3,000	$36.77	$110,310	8,158 Direct	-26.89%	Disposed	418.4% (price as of 2026-08-20)
Oct. 27, 2006	GRC	S	1,000	$38.08	$38,080	2,375 Indirect	-29.63%	Disposed	400.5% (price as of 2026-08-20)
Oct. 27, 2006	GRC	S	843	$37.94	$31,983	11,158 Direct	-7.02%	Disposed	402.4% (price as of 2026-08-20)
July 1, 2006	GRC	J	500	$26.86	$13,430	12,001 Direct	+4.35%	Acquired	609.6% (price as of 2026-08-20)
July 1, 2005	GRC	J	500	$21.26	$10,630	11,501 Direct	+4.55%	Acquired	796.5% (price as of 2026-08-20)
July 1, 2004	GRC	J	500	$26.68	$13,340	8,801 Direct	+6.02%	Acquired	793.0% (price as of 2026-08-20)
July 1, 2003	GRC	J	0	—	—	2,700 Indirect	0.00%	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.