Summary
Updated Aug 31, 2026
Roald Graham Webster is VP, Chief Accounting Officer of ALLEGRO MICROSYSTEMS, INC. (ALGM). 4 SEC Form 4 filings on record going back to 2025, most recently on 22 May 2026. Most recent open-market trade: sold $234K of ALGM on 22 May 2026. Lifetime open-market sales: $505K.
Recent Transactions
5Every recent SEC Form 4 transaction Roald Graham Webster has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Roald Graham Webster 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.
- Sharon Briansky - $1.99M of ALGM open-market activity in the last 12 months
- Michael Doogue - $1.42M of ALGM open-market activity in the last 12 months
- Susan D. Lynch - $760K of ALGM open-market activity in the last 12 months
- Richard Madormo - $264K of ALGM open-market activity in the last 12 months
- Troy Coleman - $206K of ALGM open-market activity in the last 12 months
- Erin Hagen - $192K of ALGM 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 Roald Graham Webster?
Roald Graham Webster is a corporate insider, tracked as VP, Chief Accounting Officer of ALLEGRO MICROSYSTEMS, INC. (ALGM). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Roald Graham Webster last file a Form 4?
The most recent primary Form 4 on record is dated 22 May 2026, one of 4 filings going back to 2025.
Has Roald Graham Webster been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($505K) across all tracked filings.
Where can I see all of Roald Graham Webster'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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