Douglas Thornley Siegel appears across SEC filings — Form ADV advisers, Form D, Reg A, and crowdfunding offerings. Douglas Thornley Siegel appears on 1 filing role across Form ADV (1).
| Filed | Source | Entity | Role | Location |
|---|---|---|---|---|
| 2025-07-01 | Form ADV | OPPENHEIMER & CO. INC. | CHIEF COMPLIANCE OFFICER | NEW YORK, NY |