Summary
Updated Aug 31, 2026
William B. Summers Jr. files SEC Form 4 reports at RPM INTERNATIONAL INC/DE/ (RPM). 3 SEC Form 4 filings on record going back to 2024, most recently on 1 October 2025.
Recent Transactions
3Every recent SEC Form 4 transaction William B. Summers Jr. has reported, most recent first.
Trading Pattern
InsiderAlpha's records for William B. Summers Jr. go back to 2024: 3 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 William B. Summers Jr. 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.
- Timothy R. Kinser - $380K of RPM open-market activity in the last 12 months
- Frederick R. Nance - $86K of RPM open-market activity in the last 12 months
- Salvatore D. Fazzolari - $40K of RPM 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 William B. Summers Jr.?
William B. Summers Jr. is a corporate insider of RPM INTERNATIONAL INC/DE/ (RPM). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did William B. Summers Jr. last file a Form 4?
The most recent primary Form 4 on record is dated 1 October 2025, one of 3 filings going back to 2024.
Where can I see all of William B. Summers Jr.'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.
Learn More
Follow William B. Summers Jr. and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial