Summary
Updated Aug 31, 2026
Albert Frederick Osterloh IV is Director of DEXCOM INC (DXCM). 2 SEC Form 4 filings on record, most recently on 1 June 2026.
Recent Transactions
2Every recent SEC Form 4 transaction Albert Frederick Osterloh IV has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Albert Frederick Osterloh IV go back to 2026: 2 primary Form 4 filings, an average of 2.0 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.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Albert Frederick Osterloh IV 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 Albert Frederick Osterloh IV?
Albert Frederick Osterloh IV is a corporate insider, tracked as Director of DEXCOM INC (DXCM). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Albert Frederick Osterloh IV last file a Form 4?
The most recent primary Form 4 on record is dated 1 June 2026, one of 2 filings going back to 2026.
Where can I see all of Albert Frederick Osterloh IV'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.
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