Summary
Updated Aug 31, 2026
Nicholas Augustinos is Director of DEXCOM INC (DXCM). 5 SEC Form 4 filings on record going back to 2025, most recently on 13 August 2026. Most recent open-market trade: sold $304K of DXCM on 17 June 2025. Lifetime open-market sales: $518K.
Recent Transactions
9Every recent SEC Form 4 transaction Nicholas Augustinos has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Nicholas Augustinos go back to 2025: 5 primary Form 4 filings, an average of 2.5 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.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Nicholas Augustinos 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.
- Kevin R. Sayer - $8.30M of DXCM open-market activity in the last 12 months
- Jacob Steven Leach - $1.00M of DXCM open-market activity in the last 12 months
- Michael Jon Brown - $730K of DXCM open-market activity in the last 12 months
- Jon Coleman - $723K of DXCM open-market activity in the last 12 months
- Mark G. Foletta - $627K of DXCM open-market activity in the last 12 months
- Richard Alexander Collins - $389K of DXCM open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Nicholas Augustinos?
Nicholas Augustinos is a corporate insider, tracked as Director of DEXCOM INC (DXCM). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Nicholas Augustinos submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Nicholas Augustinos been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($518K) across all tracked filings.
Where can I see all of Nicholas Augustinos'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
Follow Nicholas Augustinos and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial