Webster Roald Graham — SEC Form 4 Insider Trading Activity

Summary

Updated Jul 16, 2026

Webster Roald Graham has filed 3 SEC Form 4 filings across 1 company in the last 90 days — selling. Lifetime open-market sales: $505K.

Recent Transactions

DateTickerCompanyCodeSharesPriceValue
2026-05-22ALGMALLEGRO MICROSYSTEMS, INC.S — Open-market sale5.2K$44.88$234K
2026-05-19ALGMALLEGRO MICROSYSTEMS, INC.F — Tax withholding / forfeiture4.3K$43.10$184K
2026-05-15ALGMALLEGRO MICROSYSTEMS, INC.A — Grant or award544$0.00
2026-05-15ALGMALLEGRO MICROSYSTEMS, INC.A — Grant or award4.8K$0.00
2025-08-22ALGMALLEGRO MICROSYSTEMS, INC.S — Open-market sale8.3K$32.81$271K

Companies — Last 90 Days

Frequently Asked Questions

Who is Webster Roald Graham?

Webster Roald Graham is a corporate insider — currently tracked as Insider of ALLEGRO MICROSYSTEMS, INC. (ALGM). InsiderAlpha tracks every SEC Form 4 filing in real time.

How many SEC Form 4 filings has Webster Roald Graham submitted recently?

3 primary Form 4 filings in the last 90 days, covering 1 company.

Has Webster Roald Graham 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 Webster Roald Graham'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

Open the live Webster Roald Graham profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.