Summary
Updated Aug 31, 2026
Avril Suzette McKean-Dieser is Director of OS Therapies Inc (OSTX). 2 SEC Form 4 filings on record going back to 2025, most recently on 13 February 2026.
Trading Pattern
InsiderAlpha's records for Avril Suzette McKean-Dieser go back to 2025: 2 primary Form 4 filings, an average of 1.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Most Active Insiders Right Now
Avril Suzette McKean-Dieser has no co-filers on record, so these are insiders with the largest open-market activity across the market in the last 90 days.
- Patrick Sean Neville - $99.65M of CRCL open-market activity in the last 90 days
- Jason P. Rhodes - $99.40M of DYN open-market activity in the last 90 days
- Catalyst4, Inc. - $98.71M of MPLT open-market activity in the last 90 days
- Sanjay Mehrotra - $96.58M of MU open-market activity in the last 90 days
- David N. Capobianco - $93.81M of LB open-market activity in the last 90 days
- LandBridge Holdings LLC - $93.81M of LB open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Avril Suzette McKean-Dieser?
Avril Suzette McKean-Dieser is a corporate insider, tracked as Director of OS Therapies Inc (OSTX). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Avril Suzette McKean-Dieser last file a Form 4?
The most recent primary Form 4 on record is dated 13 February 2026, one of 2 filings going back to 2025.
Where can I see all of Avril Suzette McKean-Dieser's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
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