Robert C. Biesterfeld Jr.
Director · TRINITY INDUSTRIES INC
- 2024
- Oct 1, 2026
- 7
Summary
Latest filing:
Robert C. Biesterfeld Jr. has 7 SEC Form 4 filings on record going back to 2024, most recently on 1 October 2026.
Trading pattern
InsiderAlpha's records for Robert C. Biesterfeld Jr. go back to 2024: 7 primary Form 4 filings, an average of 2.3 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.
Most active insiders across the market
Robert C. Biesterfeld Jr. has no co-filers on record, so these are insiders with the largest open-market activity across the market in the last 90 days.
- Xiaodong Li - $147.35M in SE purchases and sales in the last 90 days
- Trive Capital Holdings LLC - $145.83M in LYNX purchases and sales in the last 90 days
- INNOVEX CO-INVEST FUND, L.P. - $143.55M in INVX purchases and sales in the last 90 days
- Amberjack Capital Partners, L.P. - $143.55M in INVX purchases and sales in the last 90 days
- George Kurtz - $142.11M in CRWD purchases and sales in the last 90 days
- Silver Lake Partners V DE (AIV), L.P. - $141.71M in DELL purchases and sales in the last 90 days
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Frequently asked questions
Who is Robert C. Biesterfeld Jr.?
Robert C. Biesterfeld Jr. is a corporate insider, tracked as Director. InsiderAlpha holds 7 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Robert C. Biesterfeld Jr. last file a Form 4?
The most recent primary Form 4 on record is dated 1 October 2026, one of 7 filings going back to 2024.
Learn more
No Form 4 transactions on record for Robert C. Biesterfeld Jr. yet.
Filings appear here automatically as they arrive from SEC EDGAR.