Sempolinski, William John
● SEC registered since 2025CRD 338120SEC# 801-134388Easton, MA
Reg. AUM
$292M
Employees
3
Accounts
750
Location
Easton, MA
Sempolinski, William John assets under management
Sempolinski, William John is an SEC-registered investment adviser based in Easton, MA. The firm has been registered since 2025. It reports $292 million in regulatory assets under management and employs 3 people.
Sempolinski, William John owners & executives
1 reported| Name | Title | Ownership | Since |
|---|---|---|---|
| William John Sempolinski Control | Owner And Chief Compliance Officer | Over 75% | 2025 |
Frequently asked questions
How much does Sempolinski, William John manage?
Sempolinski, William John reports $292 million in regulatory assets under management on its Form ADV.
How many employees does Sempolinski, William John have?
Sempolinski, William John reports 3 employees.
Where is Sempolinski, William John located?
Sempolinski, William John is based in Easton, MA and has been SEC-registered since 2025.
Does Sempolinski, William John disclose fund performance?
Sempolinski, William John is not required to publicly disclose fund returns. Form ADV filings include assets, ownership, and service providers, shown above.
Contact & registration
| Address | 45 Bristol Drive, Suite 206, Easton, MA 02375 |
| Phone | 508-297-2033 |
| Office hours | 8 a.m. - 5 p.m. |
| SEC region | Boston Regional Office (BRO) |
| Discloses disciplinary history | No |
Regulatory AUM
$292MNo change
Jan '26Form ADV, monthlyJun '26
How this firm compares
Regulatory AUMTop 63%
Larger than 37% of 16,271 advisers
EmployeesTop 77%
More than 23% of 16,825 advisers
Assets under management
$292Mregulatory AUM
Discretionary $292M