Summary
Updated Aug 31, 2026
Robert F. Lambert is Director of YORK WATER CO (YORW). 2 SEC Form 4 filings on record going back to 2025, most recently on 6 May 2026.
Recent Transactions
2Every recent SEC Form 4 transaction Robert F. Lambert has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Robert F. Lambert go back to 2025: 2 primary Form 4 filings, an average of 1.0 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 Robert F. Lambert 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.
- Joseph Thomas Hand - $329K of YORW open-market activity in the last 12 months
- Matthew J. Scarpato - $31K of YORW open-market activity in the last 12 months
- William T. Yanavitch II - $8K of YORW open-market activity in the last 12 months
- Matthew E. Poff - $7K of YORW open-market activity in the last 12 months
- Alexandra C. Chiaruttini - $5K of YORW open-market activity in the last 12 months
- Suzanne M. Becker - $5K of YORW 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 Robert F. Lambert?
Robert F. Lambert is a corporate insider, tracked as Director of YORK WATER CO (YORW). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Robert F. Lambert last file a Form 4?
The most recent primary Form 4 on record is dated 6 May 2026, one of 2 filings going back to 2025.
Where can I see all of Robert F. Lambert'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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