Oak Wealth Advisors provides financial planning, portfolio management for individuals and small businesses, selecting other managers, publishing newsletters, education planning, estate planning, insurance, philanthropic planning, retirement plan services, and tax planning. Financial planning was provided to 101–250 clients last fiscal year.
Oak Wealth Advisors reports 186 clients. They include 115 high-net-worth individuals, 67 individual clients and 4 charitable organizations. Of its assets, 100.0% ($374M across 545 accounts) are managed with discretion.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 36% | 6% |
| High-net-worth individuals | 62% | 94% |
| Charitable organizations | 2% | <1% |
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 67 | $21.4M | 5.7% | $319K |
| High-net-worth individuals | 115 | $350M | 93.8% | $3.05M |
| Charitable organizations | 4 | $1.8M | 0.5% | $451K |
| Total | 186 | $374M | 100% | $2.01M |
- Clients
- 67
- Regulatory AUM
- $21.4M
- AUM share
- 5.7%
- Avg. per client
- $319K
- Clients
- 115
- Regulatory AUM
- $350M
- AUM share
- 93.8%
- Avg. per client
- $3.05M
- Clients
- 4
- Regulatory AUM
- $1.8M
- AUM share
- 0.5%
- Avg. per client
- $451K
Total
- Clients
- 186
- Regulatory AUM
- $374M
- AUM share
- 100%
- Avg. per client
- $2.01M
- 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
Oak Wealth Advisors charges 0.20%–0.90% a year for its Investment management services. Each asset band is charged at its own rate. The fee is billed in advance, is negotiable and has a $5,000 annual minimum. The brochure also prices 2 other services, listed under fee details.
| Asset band | Annual rate |
|---|---|
| $0–$1M | 0.90% |
| $1M–$3M | 0.75% |
| $3M–$5M | 0.60% |
| $5M–$10M | 0.40% |
| $10M–$20M | 0.30% |
| $20M and above | 0.20% |
Fee details and sources
Other fees
- Ongoing financial planning
- A recurring fixed fee of $5,000 to $20,000 a year, paid quarterly in advance, for clients who do not use investment management; negotiable.
- Project-based financial planning
- A fixed fee of $2,000 to $25,000 per project, negotiable; part may be collected in advance, the rest on completion.
Michael Walther owns 75% or more of Oak Wealth Advisors. The leadership team of Oak Wealth Advisors includes Chief Compliance Officer Michael Walther. It has 7 employees, 3 of them in advisory roles.
Leadership
- Michael WaltherOwner, Managing Member, Chief Compliance Officer
Investment adviser representatives
3 representatives listed in the SEC register as of 9 October 2026.
- Justin Robert Baas
- Ryan Robert McGuire
- Michael Christopher Walther II
Staff
- 7 employees
- 3 in advisory functions
- 3 state-registered reps
- Owns 75% or more of Oak Wealth Advisors LLC
Michael Walther
Control person · since October 2008
Oak Wealth Advisors’ regulatory assets grew 2.6× from $142M (March 2021) to $374M (March 2026); clients rose from 66 to 186 and employees from 4 to 7.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| March 2026 | $374M | 186 | 7 | 2 |
| March 2025 | $321M | 179 | 6 | 3 |
| May 2024 | $283M | 145 | 6 | 3 |
| January 2023 | $211M | 99 | 7 | 4 |
| March 2022 | $204M | 80 | 5 | 2 |
| March 2021 | $142M | 66 | 4 | 1 |
Besides its headquarters, Oak Wealth Advisors has 1 office, with 2 listed addresses in Illinois and Wisconsin.
Illinois · 1 listed address
- 1363 Shermer RD. Ste. 208, NorthbrookHQ
Wisconsin · 1 listed address
- 3330 University Avenue, Madison
Contact and registration details
- Legal name
- Oak Wealth Advisors LLC
- Headquarters
- 1363 Shermer RD. Ste. 208, Northbrook, IL 60062
- Website
- oakwealth.com
- Phone
- 847-945-8888
- SEC file
- 801-110588
- Founded
- 2008
- Structure
- Illinois LLC
- Fiscal year end
- December
Oak Wealth Advisors uses Charles Schwab ($258M) as custodian for its separately managed accounts. Oak Wealth Advisors does not have custody of client assets.
- Charles SchwabCharles Schwab & Co., Inc. · San Francisco, CA · $258M100%
At year end, Oak Wealth Advisors’ separately managed accounts were mostly in funds (96%). Its reported 13F holdings for the quarter ended 30 June 2026 total $208M across 68 positions; the largest are American Centy ETF TR (13.8%), American Centy ETF TR (12.8%) and iShares TR (10.4%).
What the accounts hold
- Stocks2%
- Funds96%
- Cash2%
Reported 13F holdings
- $208M
- Reported 13F value
- 68
- Positions
- 71.3%
- In the 10 largest
- +14.6%
- Value vs. prior quarter
- American Centy ETF TR · US EQT ETF13.8%
- American Centy ETF TR · Intl EQT ETF12.8%
- iShares TR · Core S&P500 ETF10.4%
- Dimensional ETF Trust · Intl Core EQT MK8.1%
- American Centy ETF TR · Avantis Emgmkt5.9%
- Dimensional ETF Trust · US Core EQT Mkt5.5%
- American Centy ETF TR · US Sml CP Valu4.7%
- J P Morgan Exchange Traded F · Hedg Equ Lad ETF3.7%
- Vanguard BD Index Fds · Total Bnd Mrkt3.2%
- American Centy ETF TR · Intl Smcp Vlu3.2%
Together, the ten largest are 71.3% of reported value.
How many clients does Oak Wealth Advisors have?
Oak Wealth Advisors has 186 clients and manages $374 million for them, as of March 2026. They include 115 high-net-worth individuals, 67 individual clients and 4 charitable organizations.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 25 March 2026
What services does Oak Wealth Advisors offer?
Oak Wealth Advisors provides financial planning, portfolio management for individuals and small businesses, selecting other managers, publishing newsletters, education planning, estate planning, insurance, philanthropic planning, retirement plan services, and tax planning.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file; Part 2A brochure, Item 4
How much does Oak Wealth Advisors charge?
Oak Wealth Advisors charges 0.20%–0.90% a year for its Investment management services. Each asset band is charged at its own rate. The fee is billed in advance, is negotiable and has a $5,000 annual minimum.
Source: OAK WEALTH ADVISORS FORM ADV PART 2A 2026, filed 25 March 2026
Which custodians does Oak Wealth Advisors use?
Oak Wealth Advisors’ separately managed account assets are held at Charles Schwab & Co., Inc. (San Francisco, CA), with $258M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 25 March 2026
How many financial advisors does Oak Wealth Advisors have?
Oak Wealth Advisors has 3 investment adviser representatives registered with state securities authorities, out of 7 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 Oak Wealth Advisors invest in?
At the end of its last fiscal year, Oak Wealth Advisors’ separately managed accounts held 96% registered funds (mutual funds, ETFs, BDCs), 2% exchange-traded equities and 2% 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 Oak Wealth Advisors?
Oak Wealth Advisors’ direct owner is Michael Walther (75% or more).
Source: Form ADV Part 1A, Schedules A and B, filed 25 March 2026
How does Oak Wealth Advisors get paid?
Oak Wealth Advisors is paid through a percentage of assets under management 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
How do I contact Oak Wealth Advisors?
Oak Wealth Advisors’ main office is at 1363 Shermer RD. Ste. 208, Northbrook, IL 60062. Its phone number is 847-945-8888. Its website is oakwealth.com.