Summary
Updated Aug 31, 2026
James Steiner is Chief Financial Officer, Director of Neptune Insurance Holdings Inc. (NP). 3 SEC Form 4 filings on record going back to 2025, most recently on 14 August 2026. Most recent open-market trade: sold $1.81M of NP on 14 August 2026. Lifetime open-market purchases: $2.38M. Lifetime open-market sales: $3.14M.
Recent Transactions
6Every recent SEC Form 4 transaction James Steiner has reported, most recent first.
Trading Pattern
InsiderAlpha's records for James Steiner go back to 2025: 3 primary Form 4 filings, an average of 1.5 per year. The typical open-market purchase is $2.38M (1 buy totaling $2.38M). The largest single buy on record is $2.38M of NP in 2025. Sales side: 2 recorded sales totaling $3.14M, so the filing history runs sell-heavy by dollar value. 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 James Steiner 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.
- FTV VII, L.P. - $234.21M of NP open-market activity in the last 12 months
- BSIV Hold 101, LP - $208.93M of NP open-market activity in the last 12 months
- Trevor R. Burgess - $1.94M of NP open-market activity in the last 12 months
- Michael Warren Vostrizansky - $494K of NP open-market activity in the last 12 months
- Jonathan Winant Carlon - $100K of NP 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 James Steiner?
James Steiner is a corporate insider, tracked as Chief Financial Officer, Director of Neptune Insurance Holdings Inc. (NP). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has James Steiner submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has James Steiner been buying or selling stock?
Recorded transactions: 1 open-market purchase ($2.38M) and 2 open-market sales ($3.14M) across all tracked filings.
Where can I see all of James Steiner'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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