Andrew G Michelmore

Insider

First SEC filing: June 11, 2010 · Latest: June 11, 2010

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.
Initial holdings The stakes this person held when they first started reporting.

Insider at

CENX buying March 10, 2020

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 27 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

27 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 15, 2026	CENX	F	652	$54.55	$35,567	90,609 Direct	-0.71%	Disposed	-17.6% (price as of 2026-08-21)
June 15, 2026	CENX	A	2,172	—	—	91,261 Direct	+2.44%	Acquired	(price as of 2026-08-21)
June 16, 2025	CENX	F	2,333	$17.36	$40,501	89,089 Direct	-2.55%	Disposed	159.0% (price as of 2026-08-21)
June 16, 2025	CENX	A	7,778	—	—	91,422 Direct	+9.30%	Acquired	(price as of 2026-08-21)
June 3, 2024	CENX	F	2,121	$17.71	$37,563	83,644 Direct	-2.47%	Disposed	153.9% (price as of 2026-08-21)
June 3, 2024	CENX	A	7,070	—	—	85,765 Direct	+8.98%	Acquired	(price as of 2026-08-21)
June 5, 2023	CENX	F	4,448	$8.51	$37,852	78,695 Direct	-5.35%	Disposed	428.3% (price as of 2026-08-21)
June 5, 2023	CENX	A	14,825	—	—	83,143 Direct	+21.70%	Acquired	(price as of 2026-08-21)
June 14, 2022	CENX	F	2,808	$10.43	$29,287	68,318 Direct	-3.95%	Disposed	331.1% (price as of 2026-08-21)
June 14, 2022	CENX	A	9,358	—	—	71,126 Direct	+15.15%	Acquired	(price as of 2026-08-21)
June 15, 2021	CENX	F	2,321	$13.42	$31,148	61,768 Direct	-3.62%	Disposed	235.0% (price as of 2026-08-21)
June 15, 2021	CENX	A	7,737	—	—	64,089 Direct	+13.73%	Acquired	(price as of 2026-08-21)
June 9, 2020	CENX	F	5,466	$7.83	$42,799	56,352 Direct	-8.84%	Disposed	474.2% (price as of 2026-08-21)
June 9, 2020	CENX	A	18,220	—	—	61,818 Direct	+41.79%	Acquired	(price as of 2026-08-21)
March 10, 2020	CENX	P	3,000	$4.41	$13,230	43,598 Direct	+7.39%	Acquired	919.5% (price as of 2026-08-21)
June 13, 2019	CENX	P	5,000	$5.78	$28,900	40,598 Direct	+14.05%	Acquired	677.9% (price as of 2026-08-21)
June 4, 2019	CENX	F	3,879	$5.63	$21,839	35,598 Direct	-9.83%	Disposed	698.6% (price as of 2026-08-21)
June 4, 2019	CENX	A	12,929	—	—	39,477 Direct	+48.70%	Acquired	(price as of 2026-08-21)
Oct. 29, 2018	CENX	P	5,000	$7.87	$39,350	26,548 Direct	+23.20%	Acquired	471.3% (price as of 2026-08-21)
Sept. 17, 2018	CENX	F	1,766	$11.78	$20,803	21,548 Direct	-7.57%	Disposed	281.7% (price as of 2026-08-21)
Sept. 17, 2018	CENX	A	5,885	—	—	23,314 Direct	+33.77%	Acquired	(price as of 2026-08-21)
Aug. 31, 2015	CENX	F	2,419	$5.60	$13,546	27,429 Direct	-8.10%	Disposed	702.9% (price as of 2026-08-21)
Sept. 9, 2014	CENX	A	3,495	—	—	29,848 Direct	+13.26%	Acquired	(price as of 2026-08-21)
Sept. 8, 2014	CENX	F	2,702	$28.47	$76,926	26,353 Direct	-9.30%	Disposed	57.9% (price as of 2026-08-21)
Sept. 24, 2013	CENX	A	9,004	—	—	29,055 Direct	+44.91%	Acquired	(price as of 2026-08-21)
Sept. 19, 2013	CENX	D	3,324	—	—	20,051 Direct	-14.22%	Disposed	(price as of 2026-08-21)
Sept. 19, 2012	CENX	A	11,078	—	—	23,375 Direct	+90.09%	Acquired	(price as of 2026-08-21)
June 8, 2011	CENX	A	4,565	—	—	12,297 Direct	+59.04%	Acquired	(price as of 2026-08-21)
June 9, 2010	CENX	A	6,732	—	—	7,732 Direct	+673.20%	Acquired	(price as of 2026-08-21)
June 9, 2010	CENX	A	1,000	—	—	1,000 Direct	—	Acquired	(price as of 2026-08-21)

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.

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
June 11, 2010	CENX	Common Stock	0	Direct