Quick Takeaways
- Errol B. Desouza has 4 issuer positions tracked on this page.
- Estimated disclosed ownership value: $5,025,168.
- Recent insider filing activity is available below.
- Info
- Insider Ownership
Insider Trading & Ownership of Errol B. Desouza
- Location
- Paramus, NJ
- Summary
- The estimated net worth of Errol B. Desouza is at least $5,025,168 dollars as of 12 Jun 2025. Errol B. Desouza is the Director of Royalty Pharma plc and owns shares of Royalty Pharma plc (RPRX) stock worth about $4.83M. Errol B. Desouza is the Director of Cyclerion Therapeutics, Inc. and owns shares of Cyclerion Therapeutics, Inc. (CYCN) stock worth about $101.8K. Errol B. Desouza is the Director of Alector, Inc. and owns shares of Alector, Inc. (ALEC) stock worth about $81.1K. Errol B. Desouza is the Director of CATALYST BIOSCIENCES, INC. and owns shares of GYRE THERAPEUTICS, INC. (GYRE) stock worth about $14K.
- Signature
- /s/ Marc Grasso, by power of attorney
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Errol B. Desouza and return when a new Insider Trading filing changes the record on this page.
This uses the existing product follow flow to surface future filing-backed changes without guessing what they mean.
What Changed
- Largest disclosed position: Royalty Pharma plc ($4,828,170).
- 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
See Original Filing
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
Ownership of Errol B. Desouza
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| RPRX | Royalty Pharma plc | Director | $4,828,170 | 13 May 2025 | ||
| CYCN | Cyclerion Therapeutics, Inc. | Director | $101,850 | 30 Nov 2023 | ||
| ALEC | Alector, Inc. | Director | $81,142 | 11 Jun 2025 | ||
| GYRE | CATALYST BIOSCIENCES, INC. | Director | $14,006 | 01 Oct 2021 |
Insider Transactions Reported by Errol B. Desouza:
| 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.