Charles H Still

Insider

First SEC filing: May 1, 2012 · Latest: May 1, 2012

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

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 44 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

44 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 6, 2020	GEOS	A	2,200	—	—	13,600 Direct	+19.30%	Acquired	(price as of 2026-08-20)
Feb. 6, 2019	GEOS	A	2,000	—	—	11,400 Direct	+21.28%	Acquired	(price as of 2026-08-20)
Feb. 7, 2018	GEOS	A	2,400	—	—	9,400 Direct	+34.29%	Acquired	(price as of 2026-08-20)
Feb. 9, 2017	GEOS	A	1,000	—	—	7,000 Direct	+16.67%	Acquired	(price as of 2026-08-20)
Feb. 12, 2015	GEOS	A	500	—	—	6,000 Direct	+9.09%	Acquired	(price as of 2026-08-20)
Sept. 8, 2014	MMLP	P	400	$38.28	$15,312	10,000 Direct	+4.17%	Acquired	-93.9% (price as of 2026-08-20)
Feb. 25, 2014	MMLP	A	1,600	—	—	9,600 Direct	+20.00%	Acquired	(price as of 2026-08-20)
Feb. 6, 2014	GEOS	A	500	—	—	5,500 Direct	+10.00%	Acquired	(price as of 2026-08-20)
Nov. 13, 2013	MMLP	P	500	$46.22	$23,110	8,000 Direct	+6.67%	Acquired	-95.0% (price as of 2026-08-20)
April 29, 2013	MMLP	A	1,500	—	—	7,500 Direct	+25.00%	Acquired	(price as of 2026-08-20)
Nov. 16, 2012	MMLP	A	1,500	—	—	6,000 Direct	+33.33%	Acquired	(price as of 2026-08-20)
April 30, 2012	MMLP	A	1,250	—	—	4,500 Direct	+38.46%	Acquired	(price as of 2026-08-20)
March 9, 2012	MMLP	P	200	$33.69	$6,738	3,250 Direct	+6.56%	Acquired	-93.1% (price as of 2026-08-20)
May 2, 2011	MMLP	A	1,250	—	—	3,050 Direct	+69.44%	Acquired	(price as of 2026-08-20)
Aug. 19, 2010	MMLP	P	300	$29.64	$8,892	1,800 Direct	+20.00%	Acquired	-92.1% (price as of 2026-08-20)
Aug. 2, 2010	MMLP	A	1,500	—	—	1,500 Direct	—	Acquired	(price as of 2026-08-20)
May 29, 2009	GEOS	P	400	$13.00	$5,200	2,500 Direct	+19.05%	Acquired	-13.6% (price as of 2026-08-20)
Dec. 10, 2008	GEOS	P	1,000	$16.29	$16,290	2,100 Direct	+90.91%	Acquired	-31.1% (price as of 2026-08-20)
March 10, 2008	GEOS	P	200	$42.00	$8,400	1,100 Direct	+22.22%	Acquired	-73.3% (price as of 2026-08-20)
March 5, 2008	GEOS	P	100	$43.98	$4,398	900 Direct	+12.50%	Acquired	-74.5% (price as of 2026-08-20)
Feb. 21, 2008	GEOS	P	218	$48.25	$10,518	800 Direct	+37.46%	Acquired	-76.7% (price as of 2026-08-20)
March 6, 2007	GEOS	S	9,450	$68.74	$649,593	1,164 Direct	-89.03%	Disposed	-83.7% (price as of 2026-08-20)
March 2, 2007	GEOS	M	3,150	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 2, 2007	GEOS	M	3,150	—	—	3,150 Direct	-50.00%	Disposed	(price as of 2026-08-20)
March 2, 2007	GEOS	M	3,150	—	—	6,300 Direct	-33.33%	Disposed	(price as of 2026-08-20)
March 2, 2007	GEOS	M	3,150	$47.35	$149,152	10,614 Direct	+42.20%	Acquired	-76.3% (price as of 2026-08-20)
March 2, 2007	GEOS	M	3,150	$25.25	$79,538	7,464 Direct	+73.02%	Acquired	-55.5% (price as of 2026-08-20)
March 2, 2007	GEOS	M	3,150	$27.50	$86,625	4,314 Direct	+270.62%	Acquired	-59.2% (price as of 2026-08-20)
Aug. 15, 2006	GEOS	M	881	—	—	9,450 Direct	-8.53%	Disposed	(price as of 2026-08-20)
Aug. 15, 2006	GEOS	S	881	$52.50	$46,252	1,164 Direct	-43.08%	Disposed	-78.6% (price as of 2026-08-20)
Aug. 15, 2006	GEOS	M	881	$6.81	$6,000	2,045 Direct	+75.69%	Acquired	64.9% (price as of 2026-08-20)
Aug. 14, 2006	GEOS	M	2,269	—	—	10,331 Direct	-18.01%	Disposed	(price as of 2026-08-20)
Aug. 14, 2006	GEOS	M	2,027	—	—	12,600 Direct	-13.86%	Disposed	(price as of 2026-08-20)
Aug. 14, 2006	GEOS	S	4,296	$52.65	$226,184	1,164 Direct	-78.68%	Disposed	-78.7% (price as of 2026-08-20)
Aug. 14, 2006	GEOS	M	2,269	$6.81	$15,452	5,460 Direct	+71.11%	Acquired	64.9% (price as of 2026-08-20)
Aug. 14, 2006	GEOS	M	2,027	$6.94	$14,067	3,191 Direct	+174.14%	Acquired	61.8% (price as of 2026-08-20)
Aug. 11, 2006	GEOS	M	1,123	—	—	14,627 Direct	-7.13%	Disposed	(price as of 2026-08-20)
Aug. 11, 2006	GEOS	M	3,150	—	—	15,750 Direct	-16.67%	Disposed	(price as of 2026-08-20)
Aug. 11, 2006	GEOS	M	3,150	—	—	18,900 Direct	-14.29%	Disposed	(price as of 2026-08-20)
Aug. 11, 2006	GEOS	M	1,935	—	—	22,050 Direct	-8.07%	Disposed	(price as of 2026-08-20)
Aug. 11, 2006	GEOS	S	9,358	$52.78	$493,915	1,164 Direct	-88.94%	Disposed	-78.7% (price as of 2026-08-20)
Aug. 11, 2006	GEOS	M	1,123	$6.94	$7,794	10,522 Direct	+11.95%	Acquired	61.8% (price as of 2026-08-20)
Aug. 11, 2006	GEOS	M	3,150	$13.24	$41,706	9,399 Direct	+50.41%	Acquired	-15.2% (price as of 2026-08-20)
Aug. 11, 2006	GEOS	M	3,150	$15.13	$47,660	6,249 Direct	+101.65%	Acquired	-25.8% (price as of 2026-08-20)
Aug. 11, 2006	GEOS	M	1,935	$17.69	$34,230	3,099 Direct	+166.24%	Acquired	-36.5% (price as of 2026-08-20)
Aug. 10, 2006	GEOS	M	1,215	—	—	23,985 Direct	-4.82%	Disposed	(price as of 2026-08-20)
Aug. 10, 2006	GEOS	M	3,150	—	—	25,200 Direct	-11.11%	Disposed	(price as of 2026-08-20)
Aug. 10, 2006	GEOS	S	4,365	$53.02	$231,432	1,164 Direct	-78.95%	Disposed	-78.8% (price as of 2026-08-20)
Aug. 10, 2006	GEOS	M	1,215	$17.69	$21,493	5,529 Direct	-18.02%	Disposed	-36.5% (price as of 2026-08-20)
Aug. 10, 2006	GEOS	M	3,150	$19.25	$60,638	4,314 Direct	-42.20%	Disposed	-41.7% (price as of 2026-08-20)
March 8, 2006	GEOS	M	6,300	—	—	28,350 Direct	-18.18%	Disposed	(price as of 2026-08-20)
March 8, 2006	GEOS	S	6,300	$46.04	$290,052	1,164 Direct	-84.41%	Disposed	-75.6% (price as of 2026-08-20)
March 8, 2006	GEOS	M	6,300	$14.00	$88,200	7,464 Direct	+541.24%	Acquired	-19.8% (price as of 2026-08-20)
March 1, 2006	GEOS	S	7,000	$49.90	$349,300	32,664 Direct	-17.65%	Disposed	-77.5% (price as of 2026-08-20)
Feb. 8, 2006	GEOS	A	317	—	—	36,514 Direct	+0.88%	Acquired	(price as of 2026-08-20)
Feb. 8, 2006	GEOS	A	3,150	—	—	34,650 Direct	+10.00%	Acquired	(price as of 2026-08-20)
Feb. 8, 2005	GEOS	A	3,150	—	—	31,500 Direct	+11.11%	Acquired	(price as of 2026-08-20)
Feb. 8, 2005	GEOS	A	780	—	—	36,197 Direct	+2.20%	Acquired	(price as of 2026-08-20)
Jan. 12, 2004	GEOS	A	3,150	—	—	— Direct	—	Acquired	(price as of 2026-08-20)
Jan. 9, 2004	GEOS	A	707	—	—	35,417 Direct	+2.04%	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 2, 2007	GEOS	Options (right to buy)	Common Stock (3,150)	$47.35	Feb. 8, 2016	3,150	Disposed
March 2, 2007	GEOS	Options (right to buy)	Common Stock (3,150)	$25.25	Jan. 26, 2011	3,150	Disposed
March 2, 2007	GEOS	Options (right to buy)	Common Stock (3,150)	$27.50	June 30, 2008	3,150	Disposed
Aug. 15, 2006	GEOS	Options (right to buy)	Common Stock	$6.81	March 2, 2009	881	Disposed
Aug. 14, 2006	GEOS	Options (right to buy)	Common Stock	$6.81	March 2, 2009	2,269	Disposed
Aug. 14, 2006	GEOS	Options (right to buy)	Common Stock	$6.94	March 3, 2013	2,027	Disposed
Aug. 11, 2006	GEOS	Options (right to buy)	Common Stock	$6.94	March 3, 2013	1,123	Disposed
Aug. 11, 2006	GEOS	Options (right to buy)	Common Stock (3,150)	$13.24	Feb. 28, 2012	3,150	Disposed
Aug. 11, 2006	GEOS	Options (right to buy)	Common Stock (3,150)	$15.13	Jan. 31, 2010	3,150	Disposed
Aug. 11, 2006	GEOS	Options (right to buy)	Common Stock	$17.69	Jan. 12, 2014	1,935	Disposed
Aug. 10, 2006	GEOS	Options (right to buy)	Common Stock	$17.69	Jan. 12, 2014	1,215	Disposed
Aug. 10, 2006	GEOS	Options (right to buy)	Common Stock (3,150)	$19.25	Feb. 8, 2015	3,150	Disposed
March 8, 2006	GEOS	Options (right to buy)	Common Stock (6,300)	$14.00	Nov. 26, 2007	6,300	Disposed
Feb. 8, 2006	GEOS	Options (right to buy)	Common Stock (34,650)	$45.40	Feb. 8, 2016	3,150	Acquired
Feb. 8, 2005	GEOS	Options (right to buy)	Common Stock (3,150)	$19.25	Feb. 8, 2015	3,150	Acquired
Jan. 12, 2004	GEOS	Options (right to buy)	Common Stock (3,150)	$17.69	Jan. 12, 2014	3,150	Acquired

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