Summary
Updated Aug 31, 2026
Ronald Bisio is Sr. Vice President of TRIMBLE INC. (TRMB). 5 SEC Form 4 filings on record going back to 2025, most recently on 17 April 2026. Most recent open-market trade: sold $202K of TRMB on 1 December 2025. Lifetime open-market sales: $406K.
Recent Transactions
17Every recent SEC Form 4 transaction Ronald Bisio has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Ronald Bisio go back to 2025: 5 primary Form 4 filings, an average of 2.5 per year. 1 recorded transaction carries a Rule 10b5-1 flag, meaning it was pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Ronald Bisio 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.
- Robert G. Painter - $3.90M of TRMB open-market activity in the last 12 months
- Mark David Schwartz - $1.25M of TRMB open-market activity in the last 12 months
- Christopher F. Keating - $602K of TRMB open-market activity in the last 12 months
- Kaigham Gabriel - $242K of TRMB open-market activity in the last 12 months
- Phillip Sawarynski - $183K of TRMB open-market activity in the last 12 months
- James Calvin Dalton - $100K of TRMB 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 Ronald Bisio?
Ronald Bisio is a corporate insider, tracked as Sr. Vice President of TRIMBLE INC. (TRMB). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Ronald Bisio last file a Form 4?
The most recent primary Form 4 on record is dated 17 April 2026, one of 5 filings going back to 2025.
Has Ronald Bisio been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($406K) across all tracked filings.
Where can I see all of Ronald Bisio'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 Ronald Bisio 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