Insider Trading & Ownership of Barbara Weber

Location
Redwood City, CA
Summary
The estimated net worth of Barbara Weber is at least $21,640,064 dollars as of 04 Feb 2026. Barbara Weber is the Director, Executive Chair, Director of Tango Therapeutics, Inc. and owns shares of Tango Therapeutics, Inc. (TNGX) stock worth about $21.01M. Barbara Weber is the Director of Revolution Medicines, Inc. and owns shares of Revolution Medicines, Inc. (RVMD) stock worth about $627.4K.
Signature
/s/ Daniella Beckman, as attorney-in-fact
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Quick Takeaways

  • Barbara Weber has 3 issuer positions tracked on this page.
  • Estimated disclosed ownership value: $21,640,064.
  • Recent insider filing activity is available below.

What Changed

  • Largest disclosed position: Tango Therapeutics, Inc. ($21,012,651).
  • Past-year value change for that position: -$374,294.

Why This Matters

  • This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
  • You can cross-check role, issuer, and filing chronology directly against the SEC source.

Source Evidence

Filed on Form 4

Insider ownership context is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Ownership of Barbara Weber

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
TNGX Tango Therapeutics, Inc. Director, Executive Chair, Director $21,012,651 -$374,294 -1.8% 02 Feb 2026
RVMD, RVMDW Revolution Medicines, Inc. Director $627,413 08 Oct 2024
OHAA Opy Acquisition Corp. I Director 26 Oct 2021

Insider Transactions Reported by Barbara Weber:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.
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