Summary
Updated Aug 30, 2026
Fierro A. Carlos files SEC Form 4 reports at ChampionX Corp (CHX). 2 SEC Form 4 filings on record going back to 2024, most recently on 16 July 2025.
Recent Transactions
3Every recent SEC Form 4 transaction Fierro A. Carlos has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who have reported open-market trades at the same companies as Fierro A. Carlos. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Deric D. Bryant - $1.48M of CHX open-market activity on record
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Fierro A. Carlos?
Fierro A. Carlos is a corporate insider of ChampionX Corp (CHX). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Fierro A. Carlos last file a Form 4?
The most recent primary Form 4 on record is dated 16 July 2025, one of 2 filings going back to 2024.
Where can I see all of Fierro A. Carlos'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 Fierro A. Carlos 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
