Summary
Updated Aug 31, 2026
Michael J. Stone files SEC Form 4 reports at RLI CORP (RLI). 4 SEC Form 4 filings on record going back to 2024, most recently on 15 May 2026. Most recent open-market trade: sold $51K of RLI on 16 December 2024. Lifetime open-market sales: $85K.
Recent Transactions
6Every recent SEC Form 4 transaction Michael J. Stone has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Michael J. Stone go back to 2024: 4 primary Form 4 filings, an average of 1.3 per year. 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 Michael J. Stone 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.
- Craig W. Kliethermes - $911K of RLI open-market activity in the last 12 months
- Jennifer L. Klobnak - $328K of RLI open-market activity in the last 12 months
- Clark C. Kellogg - $153K of RLI open-market activity in the last 12 months
- David B. Duclos - $130K of RLI 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 J. Stone?
Michael J. Stone is a corporate insider of RLI CORP (RLI). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Michael J. Stone last file a Form 4?
The most recent primary Form 4 on record is dated 15 May 2026, one of 4 filings going back to 2024.
Has Michael J. Stone been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($85K) across all tracked filings.
Where can I see all of Michael J. Stone'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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