John P Obrien

CIK 1201474 · View on SEC EDGAR ↗

Insider

First SEC filing: March 1, 2006 · Latest: March 1, 2006

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

CENX buying Oct. 23, 2008

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 17 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

17 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Sept. 24, 2013	CENX	A	9,004	—	—	64,259 Direct	+16.30%	Acquired	(price as of 2026-08-19)
Sept. 19, 2012	CENX	A	11,078	—	—	55,255 Direct	+25.08%	Acquired	(price as of 2026-08-19)
June 8, 2011	CENX	A	4,565	—	—	44,177 Direct	+11.52%	Acquired	(price as of 2026-08-19)
June 9, 2010	CENX	A	6,732	—	—	39,612 Direct	+20.47%	Acquired	(price as of 2026-08-19)
May 28, 2009	CENX	A	13,833	—	—	32,880 Direct	+72.63%	Acquired	(price as of 2026-08-19)
Oct. 24, 2008	CENX	M	3,000	$7.34	$22,020	0 Direct	—	Acquired	520.7% (price as of 2026-08-19)
Oct. 24, 2008	CENX	M	3,000	$7.34	$22,020	19,047 Direct	+18.70%	Acquired	520.7% (price as of 2026-08-19)
Oct. 23, 2008	CENX	P	10,000	$11.85	$118,500	16,047 Direct	+165.37%	Acquired	284.5% (price as of 2026-08-19)
June 25, 2008	CENX	A	1,047	—	—	6,047 Direct	+20.94%	Acquired	(price as of 2026-08-19)
May 24, 2007	CENX	A	3,000	—	—	3,000 Direct	—	Acquired	(price as of 2026-08-19)
June 12, 2006	CENX	A	3,000	—	—	3,000 Direct	—	Acquired	(price as of 2026-08-19)
June 12, 2006	CENX	A	3,000	—	—	3,000 Direct	—	Acquired	(price as of 2026-08-19)
Feb. 27, 2006	CENX	M	2,000	$15.87	$31,740	0 Direct	-100.00%	Disposed	187.1% (price as of 2026-08-19)
Feb. 27, 2006	CENX	M	10,000	$13.31	$133,100	0 Direct	-100.00%	Disposed	242.3% (price as of 2026-08-19)
Feb. 27, 2006	CENX	S	12,000	$35.80	$429,600	0 Direct	-100.00%	Disposed	27.3% (price as of 2026-08-19)
Feb. 27, 2006	CENX	M	2,000	$15.87	$31,740	12,000 Direct	+20.00%	Acquired	187.1% (price as of 2026-08-19)
Feb. 27, 2006	CENX	M	10,000	$13.31	$133,100	10,000 Direct	—	Acquired	242.3% (price as of 2026-08-19)
Aug. 11, 2005	CENX	A	3,000	—	—	3,000 Direct	—	Acquired	(price as of 2026-08-19)
July 19, 2004	CENX	A	3,000	—	—	3,000 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.

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
Oct. 24, 2008	CENX	Stock Option [F2]	Common Stock (3,000)	$7.34	June 25, 2013	3,000	Acquired
May 24, 2007	CENX	Stock Option [F1]	Common Stock (3,000)	$55.06	May 24, 2007	3,000	Acquired
June 12, 2006	CENX	Stock Option	Common Stock (3,000)	$37.31	June 12, 2016	3,000	Acquired
June 12, 2006	CENX	Stock Option	Common Stock (3,000)	$35.90	June 12, 2016	3,000	Acquired
Feb. 27, 2006	CENX	Stock Option	Common Stock (2,000)	$15.87	—	2,000	Disposed
Feb. 27, 2006	CENX	Stock Option	Common Stock (10,000)	$13.31	—	10,000	Disposed
Aug. 11, 2005	CENX	Stock Option (right to buy)	Common Stock (3,000)	$26.70	Aug. 11, 2015	3,000	Acquired
July 19, 2004	CENX	Non-Employee Stock Options (Right to Buy)	Common Stock (3,000)	$24.10	July 19, 2014	3,000	Acquired

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