Summary
Updated Aug 31, 2026
John L. Workman is Director of FEDERAL SIGNAL CORP /DE/ (FSS). 5 SEC Form 4 filings on record going back to 2024, most recently on 23 April 2026.
Recent Transactions
5Every recent SEC Form 4 transaction John L. Workman has reported, most recent first.
Trading Pattern
InsiderAlpha's records for John L. Workman go back to 2024: 5 primary Form 4 filings, an average of 1.7 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 John L. Workman 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.
- Mark Weber - $5.71M of FSS open-market activity in the last 12 months
- Diane Bonina - $2.51M of FSS open-market activity in the last 12 months
- Brenda Reichelderfer - $795K of FSS open-market activity in the last 12 months
- Richard A. Maue - $222K of FSS open-market activity in the last 12 months
- Todd W. Garner - $151K of CNMD open-market activity in the last 12 months
- Charles Farkas - $107K of CNMD 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 John L. Workman?
John L. Workman is a corporate insider, tracked as Director of FEDERAL SIGNAL CORP /DE/ (FSS). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did John L. Workman last file a Form 4?
The most recent primary Form 4 on record is dated 23 April 2026, one of 5 filings going back to 2024.
Where can I see all of John L. Workman'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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