Nilsa Guerrero-Mahon
Director · NIOCORP DEVELOPMENTS LTD
Individual
- 2024
- Aug 18, 2025
- 2
Filings (90d)
Other insiders active in the same stocks
Insiders who have reported open-market trades at the same companies as Nilsa Guerrero-Mahon. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Dean C. Kehler - NB
- Mark A. Smith - NB
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Frequently asked questions
Who is Nilsa Guerrero-Mahon?
Nilsa Guerrero-Mahon is a corporate insider, tracked as Director of NIOCORP DEVELOPMENTS LTD (NB). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Nilsa Guerrero-Mahon last file a Form 4?
The most recent primary Form 4 on record is dated 18 August 2025, one of 2 filings going back to 2024.