# William Mack & Associates Inc

> William Mack & Associates Inc is an SEC-registered investment advisory firm in Troy, MI, registered since 1992, reporting $1 billion to $5 billion in regulatory assets under management in its Form ADV filing dated August 25, 2026.

- CRD: 107377
- Filed as: WILLIAM MACK & ASSOCIATES INC
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: Troy, MI
- Filing period: October 2026
- Form ADV filing dated: August 25, 2026
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/107377
- AdvisorCensus page: https://advisorcensus.com/firm/william-mack-and-associates-inc-troy-mi-107377

## Quick answers

**How is William Mack & Associates Inc compensated?**
On its Form ADV (Item 5.E, October 2026), William Mack & Associates Inc reports these compensation arrangements: a percentage of assets under its management; hourly charges.

**Where is William Mack & Associates Inc located?**
William Mack & Associates Inc's principal office is in Troy, MI, according to its Form ADV; the September 2026 filing also lists 4 other offices (Schedule D, Section 1.F).

**Is William Mack & Associates Inc registered with the SEC or a state?**
William Mack & Associates Inc is an SEC-registered investment advisory firm, registered since 1992. Status as filed: Approved. CRD 107377.

**How much does William Mack & Associates Inc manage?**
William Mack & Associates Inc reports $1,034,607,199 in regulatory assets under management in its Form ADV filing dated August 25, 2026 (100% discretionary).

**How have William Mack & Associates Inc's assets and staff changed since 2021?**
In the Form ADV data for William Mack & Associates Inc: Regulatory assets under management: $664,804,863 in the October 2021 data and $1,034,607,199 in the October 2026 data, up 56%. Total employees: 13 in October 2021 and 22 in October 2026. Assets under management move with markets as well as with clients coming and going.

**What types of clients does William Mack & Associates Inc serve?**
By number of clients on Form ADV Item 5.D: individuals (other than high net worth individuals) (692); high net worth individuals (260); pension and profit sharing plans (but not the plan participants or government pension plans) (13).

**Which custodians does William Mack & Associates Inc use?**
William Mack & Associates Inc's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists Charles Schwab & Co., Inc. as a custodian holding 10% or more of its separately managed account assets.

**Does William Mack & Associates Inc report any disciplinary disclosures?**
Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/107377

**What changed in William Mack & Associates Inc's recent Form ADV filings?**
In the September 2026 filing data: Registered or notice-filed in MA.

## From the Form ADV filing

### Compensation (Item 5.E)
- A percentage of assets under your management
- Hourly charges

### Custodians (Schedule D, Section 5.K(3))
- Charles Schwab & Co., Inc.

Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.

### Regulatory assets under management (Item 5.F)
- Total: $1,034,607,199
- Discretionary: $1,032,246,065
- Non-discretionary: $2,361,134

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Individuals (other than high net worth individuals) | 692 | $237,188,850 |
| High net worth individuals | 260 | $769,853,671 |
| Pension and profit sharing plans (but not the plan participants or government pension plans) | 13 | $27,564,678 |

### Advisory services (Item 5.G)
- Financial planning services
- Portfolio management for individuals and/or small businesses
- Selection of other advisers (including private fund managers)

### Firm details
- Registered since: 1992 (34 years)
- Employees: 22 total, 10 performing advisory functions
- Wrap fee program participation: No
- States registered or notice-filed: AZ, CA, FL, GA, IL, MA, MI, NC, ND, NY, OH, RI, TX, VA, WA
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Other offices (Schedule D, Section 1.F), as of the September 2026 filing
- Estero, FL
- Fenville, MI
- Royal Oak, MI
- Troy, MI

### Websites listed on Form ADV (Item 1.I)
- wmack.com

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $664,804,863 | 13 | March 31, 2021 |
| October 2022 | $726,573,000 | 13 | March 31, 2022 |
| October 2023 | $649,371,000 | 14 | March 29, 2023 |
| October 2024 | $754,782,297 | 14 | May 8, 2024 |
| October 2025 | $820,394,535 | 22 | July 22, 2025 |
| October 2026 | $1,034,607,199 | 22 | August 25, 2026 |

Regulatory assets under management: $664,804,863 in the October 2021 data and $1,034,607,199 in the October 2026 data, up 56%.
Total employees: 13 in October 2021 and 22 in October 2026.

## Changes in the filing (last 12 months)

### September 2026
- Registered or notice-filed in MA.

### May 2026
- Regulatory assets under management went from $820,394,535 to $1,034,607,199 (+26%).

### December 2025
- Registered or notice-filed in GA.

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. William Mack & Associates Inc (CRD 107377): Form ADV filing data as of October 2026.