Filings (90d)
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies John W. Pietrowicz 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.
- Paolo Tonucci - $6.10M in MRX purchases and sales in the last 12 months
- Ian T. Lowitt - $4.71M in MRX purchases and sales in the last 12 months
- Den Born Simon van - $2.34M in MRX purchases and sales in the last 12 months
- Thomas Texier - $1.48M in MRX purchases and sales in the last 12 months
- Rob Irvin - $263K in MRX purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is John W. Pietrowicz?
John W. Pietrowicz is a corporate insider of Marex Group Ltd (MRX). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did John W. Pietrowicz last file a Form 4?
The most recent primary Form 4 on record is dated 11 June 2026, one of 2 filings going back to 2026.
