Summary
Latest filing:
William M. Thalman is EVP & COO of FOSTER L B CO (FSTR). 8 SEC Form 4 filings on record going back to 2025, most recently on 3 June 2026.
Recent transactions
20The latest 20 SEC Form 4 transactions reported by William M. Thalman.
Trading pattern
InsiderAlpha's records for William M. Thalman go back to 2025: 8 primary Form 4 filings, an average of 4.0 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies William M. Thalman 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.
- Aron R. English - $5.97M in FSTR purchases and sales in the last 12 months
- Brian H. Kelly - $272K in FSTR purchases and sales in the last 12 months
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Frequently asked questions
Who is William M. Thalman?
William M. Thalman is a corporate insider, tracked as EVP & COO of FOSTER L B CO (FSTR). InsiderAlpha holds 8 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did William M. Thalman last file a Form 4?
The most recent primary Form 4 on record is dated 3 June 2026, one of 8 filings going back to 2025.