S.A. Mason provides financial planning and portfolio management for individuals and small businesses. Financial planning was provided to 101–250 clients last fiscal year.
S.A. Mason reports 282 clients. They include 164 individual clients, 90 high-net-worth individuals and 18 charitable organizations. Of its assets, 80.8% ($427M across 823 accounts) are managed with discretion; $101M across 58 accounts are not.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 58% | 5% |
| High-net-worth individuals | 32% | 87% |
| Charitable organizations | 6% | 6% |
| Corporations and other businesses | 4% | 2% |
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 164 | $25M | 4.7% | $153K |
| High-net-worth individuals | 90 | $461M | 87.1% | $5.12M |
| Charitable organizations | 18 | $30.1M | 5.7% | $1.67M |
| Corporations and other businesses | 10 | $12.9M | 2.4% | $1.29M |
| Total | 282 | $529M | 100% | $1.87M |
- Clients
- 164
- Regulatory AUM
- $25M
- AUM share
- 4.7%
- Avg. per client
- $153K
- Clients
- 90
- Regulatory AUM
- $461M
- AUM share
- 87.1%
- Avg. per client
- $5.12M
- Clients
- 18
- Regulatory AUM
- $30.1M
- AUM share
- 5.7%
- Avg. per client
- $1.67M
- Clients
- 10
- Regulatory AUM
- $12.9M
- AUM share
- 2.4%
- Avg. per client
- $1.29M
Total
- Clients
- 282
- Regulatory AUM
- $529M
- AUM share
- 100%
- Avg. per client
- $1.87M
- Clients outside the U.S.
- 0%
- Clients advised without assets under management last fiscal year
- 0
- Private funds advised
- 0
- Financial planning clients last fiscal year
- 101–250
S.A. Mason charges 0.60%–1.00% a year for its Investment Management Services. The fee is billed in arrears and is negotiable. The brochure also prices one other service, listed under fee details.
Fee details and sources
Other fees
- Financial Planning
- Financial planning is a fixed fee of $2,000 to $50,000 or an hourly fee of $150 to $300, both negotiable and paid in arrears.
Samuel Mason owns 75% or more of S.A. Mason. The leadership team of S.A. Mason includes Chief Compliance Officer Samuel Mason. It has 3 employees.
Leadership
- Samuel MasonManaging Member/Chief Compliance Officer
Investment adviser representatives
4 representatives listed in the SEC register as of 9 October 2026.
Staff
- 3 employees
- 3 in advisory functions
- 3 state-registered reps
- 1 soliciting firm
- Owns 75% or more of S.a. Mason, LLC
Samuel Mason
Control person · since August 2009
S.A. Mason’s regulatory assets grew from $480M (March 2021) to $529M (March 2026); clients rose from 176 to 282 and employees from 2 to 3.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| March 2026 | $529M | 282 | 3 | 1 |
| March 2025 | $636M | 274 | 2 | 1 |
| March 2024 | $574M | 241 | 2 | 1 |
| March 2023 | $454M | 233 | 2 | 1 |
| March 2022 | $544M | 204 | 2 | 1 |
| March 2021 | $480M | 176 | 2 | 1 |
Besides its headquarters, S.A. Mason has 0 offices, with 1 listed address in Michigan.
Michigan · 1 listed address
- 170 College Avenue, Suite 260, HollandHQ
Contact and registration details
- Legal name
- S.a. Mason, LLC
- Headquarters
- 170 College Avenue, Suite 260, Holland, MI 49423
- Website
- sa-mason.com
- Phone
- 616-355-3500
- SEC file
- 801-70548
- Founded
- 2009
- Structure
- Michigan LLC
- Fiscal year end
- December
S.A. Mason uses Charles Schwab ($391M, 74%) and Fifth Third Bank ($137M, 26%) as custodians for its separately managed accounts. S.A. Mason does not have custody of client assets.
- Fifth Third BankFifth Third Bank · Cincinnati, OH · $137M26%
- Charles SchwabCharles Schwab & Co., Inc. · San Francisco, CA · $391M74%
At year end, S.A. Mason’s separately managed accounts were largely in funds (45%) and stocks (39%). Its reported 13F holdings for the quarter ended 30 June 2026 total $326M across 282 positions; the largest are Nvidia Corp. (4.9%), Vanguard Short Duration Tax-exm Bd ETF (3.9%) and Vanguard S&P 500 ETF (3.3%).
What the accounts hold
- Stocks39%
- Funds45%
- Bonds9%
- Cash7%
Reported 13F holdings
- $326M
- Reported 13F value
- 282
- Positions
- 30.2%
- In the 10 largest
- +22.2%
- Value vs. prior quarter
- Nvidia Corp.4.9%
- Vanguard Short Duration Tax-exm Bd ETFETF3.9%
- Vanguard S&P 500 ETFETF3.3%
- Vanguard Total Stock Market ETFETF3.2%
- iShares Core S&P 500 ETFETF3.1%
- Vanguard Short-term Tax-exmpt Bd ETFETF2.9%
- Vanguard Small-cap ETFETF2.4%
- Vanguard Mid-cap ETFETF2.3%
- Apple Inc.2.1%
- SPDR S&P 500 ETF TrustETF2.0%
Together, the ten largest are 30.2% of reported value.
How many clients does S.A. Mason have?
S.A. Mason has 282 clients and manages $529 million for them, as of March 2026. They include 164 individual clients, 90 high-net-worth individuals and 18 charitable organizations.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 26 March 2026
What services does S.A. Mason offer?
S.A. Mason provides financial planning and portfolio management for individuals and small businesses.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
How much does S.A. Mason charge?
S.A. Mason charges 0.60%–1.00% a year for its Investment Management Services. The fee is billed in arrears and is negotiable.
Source: ADV FORM 2A, filed 26 March 2026
Which custodians does S.A. Mason use?
S.A. Mason’s separately managed account assets are held at Charles Schwab & Co., Inc. (San Francisco, CA), with $391M and Fifth Third Bank (Cincinnati, OH), with $137M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 26 March 2026
How many financial advisors does S.A. Mason have?
S.A. Mason has 3 investment adviser representatives registered with state securities authorities, out of 3 employees, and 3 perform investment advisory functions. None are registered representatives of a broker-dealer or licensed insurance agents.
Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file
What does S.A. Mason invest in?
At the end of its last fiscal year, S.A. Mason’s separately managed accounts held 45% registered funds (mutual funds, ETFs, BDCs), 39% exchange-traded equities, 9% U.S. government and agency bonds and 7% cash and equivalents.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Who owns S.A. Mason?
S.A. Mason’s direct owner is Samuel Mason (75% or more).
Source: Form ADV Part 1A, Schedules A and B, filed 26 March 2026
How does S.A. Mason get paid?
S.A. Mason is paid through a percentage of assets under management, hourly charges and fixed fees. Its Form ADV lists no commissions or performance-based fees among how it is paid.
Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file
Is S.A. Mason registered with the SEC?
Yes, S.A. Mason has been registered with the SEC as an investment adviser since 16 September 2009. Its CRD number is 151440 and its SEC file number is 801-70548.
Source: Form ADV Part 1A, Item 1, filed 26 March 2026; IAPD firm record
How do I contact S.A. Mason?
S.A. Mason’s main office is at 170 College Avenue, Suite 260, Holland, MI 49423. Its phone number is 616-355-3500. Its website is sa-mason.com.