Institution

03

Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 9 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.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
June 7, 2006 ATEC J 57,754 · · 2,999,834 Indirect +1.96% Acquired (price as of 2026-10-02)
June 7, 2006 ATEC J 583,953 · · 583,953 Indirect · Acquired (price as of 2026-10-02)
June 7, 2006 ATEC J 57,138 · · 2,992,997 Indirect +1.95% Acquired (price as of 2026-10-02)
June 7, 2006 ATEC C 660,540 · · 0 Indirect -100.00% Disposed (price as of 2026-10-02)
June 7, 2006 ATEC J 49,229 · · 546,990 Indirect +9.89% Acquired (price as of 2026-10-02)
June 7, 2006 ATEC C 2,358,127 · · 2,935,859 Indirect +408.17% Acquired (price as of 2026-10-02)
June 7, 2006 ATEC J 497,761 · · 497,761 Indirect · Acquired (price as of 2026-10-02)
June 7, 2006 ATEC J 577,732 · · 577,732 Indirect · Acquired (price as of 2026-10-02)
June 7, 2006 ATEC J 1,500,000 · · 0 Indirect -100.00% Disposed (price as of 2026-10-02)

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
June 7, 2006 ATEC Series A Common Stock Common Stock (2,358,127) · · 660,540 Disposed

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

Initial ownership (Form 3) 2 holdings

07

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

DateTickerSecuritySharesOwnership
June 2, 2006 ATEC Series A Preferred Stock 1,500,000 Indirect
June 2, 2006 ATEC Series A Common Stock→ Common Stock (660,540) 660,540 Indirect