John Cox
CEO & President, Director · Dyne Therapeutics, Inc.
- 2024
- Sep 8, 2026
- 11
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies John Cox 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.
- Jason P. Rhodes - $124.92M in DYN purchases and sales in the last 12 months
- Dirk Kersten - $38.57M in DYN purchases and sales in the last 12 months
- Brian S. Posner - $315K in DYN purchases and sales in the last 12 months
- Douglas Kerr - $233K in DYN purchases and sales in the last 12 months
- Erick Lucera - $229K in DYN purchases and sales in the last 12 months
- Johanna Friedl-Naderer - $43K in DYN purchases and sales in the last 12 months
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Frequently asked questions
Who is John Cox?
John Cox is a corporate insider, tracked as CEO & President, Director of Dyne Therapeutics, Inc. (DYN). InsiderAlpha holds 11 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has John Cox submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has John Cox been buying or selling stock?
Recorded transactions: 1 open-market purchase ($911K) and 7 open-market sales ($479K) across all tracked filings.
