Stephen Oneil

Insider

First SEC filing: June 2, 2006 · Latest: June 2, 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.
Initial holdings The stakes this person held when they first started reporting.

Insider at

ATEC buying Aug. 9, 2010

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 22 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

22 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
April 25, 2017	ATEC	A	28,090	—	—	28,090 Direct	—	Acquired	(price as of 2026-08-19)
April 25, 2017	ATEC	A	18,939	—	—	33,006 Direct	+134.63%	Acquired	(price as of 2026-08-19)
Dec. 12, 2016	ATEC	A	14,610	$4.43	$64,722	29,221 Direct	+99.99%	Acquired	122.6% (price as of 2026-08-19)
Feb. 25, 2015	ATEC	A	40,816	$1.35	$55,102	175,343 Direct	+30.34%	Acquired	-39.1% (price as of 2026-08-19)
Feb. 25, 2015	ATEC	A	33,334	—	—	168,812 Direct	+24.60%	Acquired	(price as of 2026-08-19)
July 29, 2014	ATEC	A	38,269	$1.34	$51,280	134,527 Direct	+39.76%	Acquired	-38.7% (price as of 2026-08-19)
July 29, 2014	ATEC	A	33,582	—	—	135,478 Direct	+32.96%	Acquired	(price as of 2026-08-19)
July 26, 2013	ATEC	A	20,088	$2.37	$47,609	96,258 Direct	+26.37%	Acquired	-65.3% (price as of 2026-08-19)
July 26, 2013	ATEC	A	18,987	—	—	101,896 Direct	+22.90%	Acquired	(price as of 2026-08-19)
July 25, 2012	ATEC	A	21,170	$1.69	$35,777	76,170 Direct	+38.49%	Acquired	-51.4% (price as of 2026-08-19)
July 25, 2012	ATEC	A	26,272	—	—	82,909 Direct	+46.39%	Acquired	(price as of 2026-08-19)
July 27, 2011	ATEC	A	25,000	$2.86	$71,500	55,000 Direct	+83.33%	Acquired	-71.3% (price as of 2026-08-19)
Nov. 4, 2010	ATEC	A	7,500	$2.31	$17,325	30,000 Direct	+33.33%	Acquired	-64.4% (price as of 2026-08-19)
Aug. 9, 2010	ATEC	P	5,000	$2.50	$12,500	56,637 Direct	+9.68%	Acquired	-67.1% (price as of 2026-08-19)
Aug. 9, 2010	ATEC	A	5,000	$2.50	$12,500	56,637 Direct	+9.68%	Acquired	-67.1% (price as of 2026-08-19)
Aug. 4, 2009	ATEC	A	7,500	$4.45	$33,375	22,500 Direct	+50.00%	Acquired	-81.5% (price as of 2026-08-19)
July 31, 2008	ATEC	A	7,500	$4.78	$35,850	15,000 Direct	+100.00%	Acquired	-82.8% (price as of 2026-08-19)
Aug. 22, 2007	ATEC	A	7,500	—	—	7,500 Direct	-50.00%	Disposed	(price as of 2026-08-19)
June 7, 2006	ATEC	J	587	—	—	54,137 Direct	+1.10%	Acquired	(price as of 2026-08-19)
June 7, 2006	ATEC	C	53,550	—	—	53,550 Direct	—	Acquired	(price as of 2026-08-19)
June 7, 2006	ATEC	J	581	—	—	54,131 Direct	+1.08%	Acquired	(price as of 2026-08-19)
June 7, 2006	ATEC	J	500	—	—	500 Direct	—	Acquired	(price as of 2026-08-19)
June 7, 2006	ATEC	C	15,000	—	—	0 Direct	-100.00%	Disposed	(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
April 25, 2017	ATEC	Stock Option (right to buy)	Common Stock (28,090)	$1.98	April 25, 2027	28,090	Acquired
Dec. 12, 2016	ATEC	NQ Stock Option	Common Stock (14,610)	$4.43	Dec. 12, 2026	14,610	Acquired
Feb. 25, 2015	ATEC	NQ Stock Option	Common Stock (40,816)	$1.35	Feb. 25, 2025	40,816	Acquired
July 29, 2014	ATEC	NQ Stock Option	Common Stock (38,269)	$1.34	July 29, 2024	38,269	Acquired
July 26, 2013	ATEC	NQ Stock Option	Common Stock (20,088)	$2.37	July 26, 2023	20,088	Acquired
July 25, 2012	ATEC	NQ Stock Option	Common Stock (21,170)	$1.69	July 25, 2022	21,170	Acquired
July 27, 2011	ATEC	NQ Stock Option	Common Stock (25,000)	$2.86	July 27, 2021	25,000	Acquired
Nov. 4, 2010	ATEC	NQ Stock Option	Common Stock (7,500)	$2.31	Nov. 4, 2020	7,500	Acquired
Aug. 4, 2009	ATEC	NQ Stock Option	Common Stock (7,500)	$4.45	Aug. 4, 2019	7,500	Acquired
July 31, 2008	ATEC	NQ Stock Option	Common Stock (7,500)	$4.78	July 31, 2018	7,500	Acquired
Aug. 22, 2007	ATEC	NQ Stock Option	Common Stock (7,500)	$3.93	Aug. 22, 2017	7,500	Disposed
June 7, 2006	ATEC	Series A-1 Common Stock	Common Stock (53,550)	—	—	15,000	Disposed

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

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
June 2, 2006	ATEC	Series A-1 Common Stock→ Common Stock	—	Direct