Alphatec Holdings (ATEC)Oberweis Asset Management Inc added to its stake +908K shares

1.91M

Shares reported · +908K vs prior quarter

0.61%

Disclosed portfolio weight

$20.8M

Reported value

Holdings as of

Mar 31, 2026

Filed

May 15, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. May 1, 2026Company filing · Form 8-K · Material agreement, Agreement endedSigned an important agreement, and ended an important agreement (and 2 more items)

What came next

1. Jun 10, 2026Company filing · Form 8-K · Executive change, Shareholder voteChanged a top executive or board member, and held a shareholder vote“On June 10, 2026, Alphatec Holdings, Inc. (the “Company”) held its 2026 annual meeting of stockholders (the “Annual Meeting”). At the Annual Meeting, the Company’s stockholders approved the Company’s 2026 Equity Incentive Plan (the "2026 EIP") and the Company's 2026 Employee Stock Purchase Plan (the "2026 ESPP").”
2. Aug 4, 2026Company filing · Form 8-K · ResultsReported its results

How to read SEC Form 13F-HR

Form 13F is the quarterly report in which investment managers that oversee $100 million or more list the US-listed stocks and some other securities they held on the last day of the quarter.

Full guide: What is an SEC Form 13F?

What else is on file for Alphatec Holdings

For Alphatec Holdings, OQRO holds 2 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its ATEC page.

How this filing works

• SEC Form 13F

Other disclosures at Alphatec Holdings

• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRMay 15, 2026
• SEC Form 13F-HRFeb 17, 2026
• SEC Form 13F-HRFeb 17, 2026
• SEC Form 13F-HRFeb 17, 2026

Everything OQRO holds on this company is on its ATEC page.