Quick Takeaways
- Michael Thomas Henderson has 3 issuer positions tracked on this page.
- Estimated disclosed ownership value: $92,989,176.
- Recent insider filing activity is available below.
- Info
- Insider Ownership
Insider Trading & Ownership of Michael Thomas Henderson
- Location
- Palo Alto, CA
- Summary
- The estimated net worth of Michael Thomas Henderson is at least $92,989,176 dollars as of 13 Mar 2026. Michael Thomas Henderson is the Chief Executive Officer, Director of Apogee Therapeutics, Inc. and owns shares of Apogee Therapeutics, Inc. (APGE) stock worth about $87.47M. Michael Thomas Henderson is the Director of Spyre Therapeutics, Inc. and owns shares of Spyre Therapeutics, Inc. (SYRE) stock worth about $5.52M.
- Signature
- /s/ Matthew Batters, as attorney-in-fact for Michael Henderson
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Michael Thomas Henderson 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: Apogee Therapeutics, Inc. ($87,465,593).
- Past-year value change for that position: -$10,153,009.
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 Michael Thomas Henderson
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| APGE | Apogee Therapeutics, Inc. | Chief Executive Officer, Director | $87,465,593 | -$10,153,009 | -10% | 11 Mar 2026 |
| SYRE | Spyre Therapeutics, Inc. | Director | $5,523,583 | 21 Jan 2026 | ||
| ARYD | ARYA Sciences Acquisition Corp IV | Director | 31 Jul 2024 |
Insider Transactions Reported by Michael Thomas Henderson:
| 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.