Dennis Nelson — SEC Insider Profile, Roles & Companies

Insider at

04

05

0 buys (P) 0 sells (S) Net: $0 + 2 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

No open-market trades on record; showing all filings.

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Dec. 12, 2016	ATEC	A	15,000	·	·	16,497 Direct	+1002.00%	Acquired	(price as of 2026-10-05)
Dec. 12, 2016	ATEC	A	15,000	$4.43	$66,450	30,000 Direct	+100.00%	Acquired	142.0% (price as of 2026-10-05)

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.

06

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Dec. 12, 2016	ATEC	Incentive Stock Option	Common Sock (15,000)	$4.43	Dec. 12, 2026	15,000	Acquired

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

07

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

Date	Ticker	Security	Shares	Ownership
Nov. 9, 2016	ATEC	Common Sock	556	Direct
Nov. 9, 2016	ATEC	Restricted Common Stock [F1]	941	Direct
Nov. 9, 2016	ATEC	Non-qualified Stock Option→ Common Stock (2,500)	2,500	Direct
Nov. 9, 2016	ATEC	Incentive Stock Option→ Common Sock (6,250)	6,250	Direct
Nov. 9, 2016	ATEC	Incentive Stock Option→ Common Stock (2,500)	2,500	Direct
Nov. 9, 2016	ATEC	Incentive Stock Option→ Common Stock (3,750)	3,750	Direct

08

Matched by name from proxy statements (DEF 14A) — verify against the filing.

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2016	$250,616	$68,000	·	·	·	·	$2,448	$431,671

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.