Summary
Updated Aug 31, 2026
W. Matthew Cox is Chief Financial Officer of RADNOSTIX INC (INIS). 1 SEC Form 4 filing on record, dated 22 November 2024. Most recent open-market trade: bought $2K of INIS on 22 November 2024. Lifetime open-market purchases: $3K.
Recent Transactions
2Every recent SEC Form 4 transaction W. Matthew Cox has reported, most recent first.
Trading Pattern
InsiderAlpha's records for W. Matthew Cox go back to 2024: 1 primary Form 4 filing, an average of 0.3 per year. The typical open-market purchase is $2K (2 buys totaling $3K). The largest single buy on record is $2K of INIS in 2024. 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 W. Matthew Cox 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.
- Christopher G. Grosso - of INIS 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 W. Matthew Cox?
W. Matthew Cox is a corporate insider, tracked as Chief Financial Officer of RADNOSTIX INC (INIS). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did W. Matthew Cox last file a Form 4?
The only primary Form 4 on record is dated 22 November 2024.
Has W. Matthew Cox been buying or selling stock?
Recorded transactions: 2 open-market purchases ($3K) and 0 open-market sales across all tracked filings.
Where can I see all of W. Matthew Cox'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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