Insider Trading & Ownership of Lewis T. "rusty" Williams

Location
Newark, CA
Summary
The estimated net worth of Lewis T. "rusty" Williams is at least $116,437,487 dollars as of 18 Feb 2026. Lewis T. "rusty" Williams is the Director of Arcellx, Inc. and owns shares of Arcellx, Inc. (ACLX) stock worth about $115.79M. Lewis T. "rusty" Williams is the Director of Protagonist Therapeutics, Inc and owns shares of Protagonist Therapeutics, Inc (PTGX) stock worth about $644.9K.
Signature
/s/ Matthew Gosling, Attorney-in-Fact for Lewis T. "Rusty" Williams
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Quick Takeaways

  • Lewis T. "rusty" Williams has 3 issuer positions tracked on this page.
  • Estimated disclosed ownership value: $116,437,487.
  • Recent insider filing activity is available below.

What Changed

  • Largest disclosed position: Arcellx, Inc. ($115,792,551).
  • Past-year value change for that position: .

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 Lewis T. "rusty" Williams

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
ACLX Arcellx, Inc. Director $115,792,551 08 Feb 2022
PTGX Protagonist Therapeutics, Inc Director $644,936 -$1,483,560 -70% 17 Feb 2026
NGNE Neoleukin Therapeutics, Inc. Director 11 May 2021

Insider Transactions Reported by Lewis T. "rusty" Williams:

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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