Summary
Updated Aug 30, 2026
Michael R. Cianciulli is Head of Ext Rep Comp Accting of MARKETAXESS HOLDINGS INC (MKTX). 1 SEC Form 4 filing on record, dated 1 April 2025.
Recent Transactions
1Every recent SEC Form 4 transaction Michael R. Cianciulli has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Michael R. Cianciulli 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.
- Stephen P. Casper - $299K of MKTX open-market activity in the last 12 months
- Kevin M. McPherson - $277K of MKTX open-market activity in the last 12 months
- Scott Pintoff - $142K of MKTX 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 Michael R. Cianciulli?
Michael R. Cianciulli is a corporate insider, tracked as Head of Ext Rep Comp Accting of MARKETAXESS HOLDINGS INC (MKTX). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Michael R. Cianciulli last file a Form 4?
The only primary Form 4 on record is dated 1 April 2025.
Where can I see all of Michael R. Cianciulli'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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