Summary
Updated Aug 30, 2026
John B. Ketchum files SEC Form 4 reports at Tango Therapeutics, Inc. (TNGX). 1 SEC Form 4 filing on record, dated 8 June 2026.
Recent Transactions
1Every recent SEC Form 4 transaction John B. Ketchum 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 John B. Ketchum 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.
- Third Rock Ventures IV, L.P. - $16.52M of TNGX open-market activity in the last 12 months
- Adam Crystal - $5.72M of TNGX open-market activity in the last 12 months
- Barbara Weber - $374K of TNGX open-market activity in the last 12 months
- Daniella Beckman - $127K of TNGX 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 John B. Ketchum?
John B. Ketchum is a corporate insider of Tango Therapeutics, Inc. (TNGX). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has John B. Ketchum submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of John B. Ketchum'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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