Summary
Updated Aug 31, 2026
Dave Schaeffer is CHAIRMAN, CEO, AND PRESIDENT of COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI). 30 SEC Form 4 filings on record going back to 2024, most recently on 4 May 2026. Most recent open-market trade: sold $22.52M of CCOI on 8 August 2025. Lifetime open-market sales: $137.31M.
Recent Transactions
20Every recent SEC Form 4 transaction Dave Schaeffer has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Dave Schaeffer go back to 2024: 30 primary Form 4 filings, an average of 10.0 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 Dave Schaeffer 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.
- Thaddeus Gerard Weed - $372K of CCOI open-market activity in the last 12 months
- Lewis H. Ferguson - $189K of CCOI open-market activity in the last 12 months
- Henry W. Kilmer - $186K of CCOI open-market activity in the last 12 months
- Sheryl Lynn Kennedy - $181K of CCOI 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 Dave Schaeffer?
Dave Schaeffer is a corporate insider, tracked as CHAIRMAN, CEO, AND PRESIDENT of COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI). InsiderAlpha holds 30 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Dave Schaeffer last file a Form 4?
The most recent primary Form 4 on record is dated 4 May 2026, one of 30 filings going back to 2024.
Has Dave Schaeffer been buying or selling stock?
Recorded transactions: 0 open-market purchases and 39 open-market sales ($137.31M) across all tracked filings.
Where can I see all of Dave Schaeffer'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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