Quick Takeaways
- Clay B. Siegall has 5 issuer positions tracked on this page.
- Estimated disclosed ownership value: $166,224,999.
- Recent insider filing activity is available below.
- Info
- Insider Ownership
Insider Trading & Ownership of Clay B. Siegall
- Location
- Bothell, WA
- Summary
- The estimated net worth of Clay B. Siegall is at least $166,224,999 dollars as of 31 Mar 2026. Clay B. Siegall is the President & CEO, Director of Seagen Inc. and owns shares of Seagen Inc. stock worth about $152.53M. Clay B. Siegall is the President and CEO, Director of Immunome Inc. and owns shares of Immunome Inc. (IMNM) stock worth about $13.59M. Clay B. Siegall is the Director of Shattuck Labs, Inc. and owns shares of Shattuck Labs, Inc. (STTK) stock worth about $111.1K.
- Signature
- /s/ Sandra Stoneman, Attorney-in-Fact
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Clay B. Siegall and return when a new Insider Trading filing appears.
This tracks SEC filing changes for this page using existing product update flows.
What Changed
- Largest disclosed position: Seagen Inc. ($152,527,740).
- 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.
Official SEC Source
Filed on Form 4
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
See Original FilingOwnership of Clay B. Siegall
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| SGEN | Seagen Inc. | President & CEO, Director | $152,527,740 | 12 May 2022 | ||
| IMNM | Immunome Inc. | President and CEO, Director | $13,586,147 | +$1,749,660 | +15% | 27 Mar 2026 |
| STTK | Shattuck Labs, Inc. | Director | $111,112 | 25 Aug 2025 | ||
| NRIX | Nurix Therapeutics, Inc. | Director | 05 May 2022 | |||
| TRML | Tourmaline Bio, Inc. | Director | 28 Oct 2025 |
Insider Transactions Reported by Clay B. Siegall:
| 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.