Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies David M. Demski files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Jennifer N. Pritzker - $15.65M in ATEC purchases and sales in the last 12 months
- Squadron Capital Holdings LLC - $15.65M in ATEC purchases and sales in the last 12 months
- Squadron Capital LLC - $10.36M in ATEC purchases and sales in the last 12 months
- David R. Pelizzon - $10.36M in ATEC purchases and sales in the last 12 months
- Patrick Miles - $5.12M in ATEC purchases and sales in the last 12 months
- David Sponsel - $4.01M in ATEC purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is David M. Demski?
David M. Demski is a corporate insider of Alphatec Holdings, Inc. (ATEC). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did David M. Demski last file a Form 4?
The most recent primary Form 4 on record is dated 12 June 2026, one of 4 filings going back to 2024.
