William M. Leonard
Professional summary
William M Leonard is a registered financial professional currently at HERBERT J. SIMS & CO, INC. located in Dallas, Texas.
William is registered as a RR (Registered Representative) and started their career in finance in 2026. William has worked at 1 firm and has passed the Series 52TO and SIE exams.
Aliases
Other business activities
CRS (Client Relationship Summary) - BD
Click below to view William M Leonard's CRS (Customer Relationship Summary).
Certified licenses
Experience
January 29, 2026 - Present
HERBERT J. SIMS & CO, INC.
Office #1: 5910 North Central Expressway Suite 1580, Dallas, TX 75206State Registrations and Notice Filings
Listed states reflect where the advisor is authorized to serve clients under state regulations.
Visual representation of state registrations
Exams
Series 52TO
Date: 1/29/2026
Municipal Securities Representative ExaminationFINRA
Current Firm
HERBERT J. SIMS & CO, INC.
CRD#: 3420 / SEC#: , 8-3315
Contact information
FINRA licenses (53 States and Territories)
Direct owners and executive officers
| Name | Position | CRD# |
|---|---|---|
| TEKSYS CORPORATION | OWNER | |
| DIAMOND, JASON HOWARD | CHIEF FINANCIAL OFFICER/MANAGING PRINCIPAL | 2320884 |
| RULNICK, AARON M | DIRECTOR | 3149315 |
| HEBERT, VALERIE | CHIEF COMPLIANCE OFFICER | 4007252 |
| MULLANE, DANIEL JOSEPH | MANAGING PRINCIPAL | 1246435 |
| SANDS, R JEFFREY | DIRECTOR | 4285040 |
| SIMS, WILLIAM BARNETT | PRESIDENT/CEO | 425019 |
Disclosures
| Regulatory Event | 8 |
| Arbitration | 2 |
Red Flags
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Company Information
HERBERT J. SIMS & CO, INC.
CRD#: 3420Dallas, TX 75206TRUST BUT VERIFY
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