Keystone Wealth Services provides financial planning, portfolio management for individuals and small businesses, pension consulting, selecting other managers, education planning, estate planning, insurance, and philanthropic planning. Financial planning was provided to 51–100 clients last fiscal year.
Keystone Wealth Services reports 635 clients. They include 285 individual clients, 246 high-net-worth individuals, and 104 corporations and other businesses. Of its assets, 93.4% ($804M across 1,477 accounts) are managed with discretion; $56.4M across 65 accounts are not. Of its clients, 1% are outside the U.S.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 45% | 10% |
| High-net-worth individuals | 39% | 77% |
| Pension and profit-sharing plans | Fewer than 5 | <1% |
| Charitable organizations | Fewer than 5 | <1% |
| Corporations and other businesses | 16% | 12% |
Client shares use reported counts. Client types without a reported count are excluded from that total.
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 285 | $84.3M | 9.8% | $296K |
| High-net-worth individuals | 246 | $667M | 77.5% | $2.71M |
| Pension and profit-sharing plans | Fewer than 5 | $3.02M | 0.4% | — |
| Charitable organizations | Fewer than 5 | $1.17M | 0.1% | — |
| Corporations and other businesses | 104 | $105M | 12.2% | $1.01M |
| Total | 635 | $861M | 100% | — |
- Clients
- 285
- Regulatory AUM
- $84.3M
- AUM share
- 9.8%
- Avg. per client
- $296K
- Clients
- 246
- Regulatory AUM
- $667M
- AUM share
- 77.5%
- Avg. per client
- $2.71M
- Clients
- Fewer than 5
- Regulatory AUM
- $3.02M
- AUM share
- 0.4%
- Avg. per client
- —
- Clients
- Fewer than 5
- Regulatory AUM
- $1.17M
- AUM share
- 0.1%
- Avg. per client
- —
- Clients
- 104
- Regulatory AUM
- $105M
- AUM share
- 12.2%
- Avg. per client
- $1.01M
Total
- Clients
- 635
- Regulatory AUM
- $861M
- AUM share
- 100%
- Avg. per client
- —
- Clients outside the U.S.
- 1%
- Clients advised without assets under management last fiscal year
- 0
- Private funds advised
- 0
- Financial planning clients last fiscal year
- 51–100
Keystone Wealth Services charges up to 2.00% a year for its Investment Advisory 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 and Consulting
- Stand-alone planning and consulting is billed hourly at up to $350 an hour, or as a fixed or recurring fee of $500 to $10,000.
Shattuck Lamm owns 25% to 50% of Keystone Wealth Services. The leadership team of Keystone Wealth Services includes Chief Compliance Officer Shattuck Lamm. It has 11 employees.
Leadership
Shattuck LammManaging Member & Chief Compliance Officer
Mark ThatcherManaging Member
Investment adviser representatives
12 representatives listed in the SEC register as of 9 October 2026.
Staff
- 11 employees
- 11 in advisory functions
- 10 state-registered reps
- 6 broker-dealer reps
- 6 insurance agents
- 1 soliciting firm
- Owns 25% to 50% of Keystone Wealth Services, LLC
Shattuck Lamm
Control person · since February 2019
- Owns 25% to 50% of Keystone Wealth Services, LLC
Mark Thatcher
Control person · since February 2019
Keystone Wealth Services’ regulatory assets grew 6.0× from $142M (July 2021) to $861M (August 2026); clients rose from 51 to 635 and employees from 6 to 11.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| August 2026 | $861M | 635 | 11 | 2 |
| July 2025 | $692M | 535 | 11 | 2 |
| January 2024 | $534M | 412 | 10 | 2 |
| January 2023 | $417M | 346 | 10 | 2 |
| June 2022 | $395M | 247 | 9 | 2 |
| July 2021 | $142M | 51 | 6 | 1 |
Besides its headquarters, Keystone Wealth Services has 1 office (1 private residence, listed without an address), with 1 listed address in California.
California · 1 listed address
- 73575 El Paseo, Suite 2300, Palm DesertHQ
Contact and registration details
- Legal name
- Keystone Wealth Services, LLC
- Headquarters
- 73575 El Paseo, Suite 2300, Palm Desert, CA 92260
- Website
- Not reported
- Phone
- 760-818-7020
- SEC file
- 801-121495
- Founded
- 2019
- Structure
- California LLC
- Fiscal year end
- December
Keystone Wealth Services uses Charles Schwab ($853M) as custodian for its separately managed accounts. Keystone Wealth Services has custody of $291M in client assets for 422 clients.
- Charles SchwabCharles Schwab & Co., Inc. · San Francisco, CA · $853M100%
At year end, Keystone Wealth Services’ separately managed accounts were largely in funds (44%) and bonds (27%). Its reported 13F holdings for the quarter ended 30 June 2026 total $539M across 327 positions; the largest are iShares TR (5.8%), Apple Inc. (4.1%) and Invesco Qqq TR (3.1%).
What the accounts hold
- Stocks21%
- Exchange-traded equities20%
- Non-exchange-traded equities1%
- Funds44%
- Bonds27%
- U.S. government and agency bonds18%
- Investment grade corporate bonds7%
- State and local bonds2%
- Cash8%
Reported 13F holdings
- $539M
- Reported 13F value
- 327
- Positions
- 27.2%
- In the 10 largest
- +15.2%
- Value vs. prior quarter
- iShares TR · Core S&P500 ETF5.8%
- Apple Inc.4.1%
- Invesco Qqq TR · Unit Ser 13.1%
- Nvidia Corporation2.8%
- State Str SPDR S&P 500 ETF T · TR Unit2.2%
- Seagate Technology Hldngs PL2.0%
- First TR Exchng Traded FD VI · FT Vest US EQT2.0%
- Fidelity Covington Trust · Blue Chip Grwth1.8%
- Microsoft Corp.1.8%
- First TR Exchng Traded FD VI · FT Vest US EQT1.7%
Together, the ten largest are 27.2% of reported value.
How many clients does Keystone Wealth Services have?
Keystone Wealth Services has 635 clients and manages $861 million for them, as of August 2026. They include 285 individual clients, 246 high-net-worth individuals, and 104 corporations and other businesses.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 6 August 2026
What services does Keystone Wealth Services offer?
Keystone Wealth Services provides financial planning, portfolio management for individuals and small businesses, pension consulting, selecting other managers, education planning, estate planning, insurance, and philanthropic 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 Keystone Wealth Services charge?
Keystone Wealth Services charges up to 2.00% a year for its Investment Advisory Services. The fee is billed in arrears and is negotiable.
Source: FORM ADV PART 2A - FIRM BROCHURE, filed 6 August 2026
Which custodians does Keystone Wealth Services use?
Keystone Wealth Services’ separately managed account assets are held at Charles Schwab & Co., Inc. (San Francisco, CA), with $853M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 6 August 2026
How many financial advisors does Keystone Wealth Services have?
Keystone Wealth Services has 10 investment adviser representatives registered with state securities authorities, out of 11 employees, and 11 perform investment advisory functions. 6 employees are registered representatives of a broker-dealer and 6 employees are 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 Keystone Wealth Services invest in?
At the end of its last fiscal year, Keystone Wealth Services’ separately managed accounts held 44% registered funds (mutual funds, ETFs, BDCs), 20% exchange-traded equities, 18% U.S. government and agency bonds, 8% cash and equivalents, 7% investment grade corporate bonds, 2% state and local bonds and 1% non-exchange-traded equities.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Who owns Keystone Wealth Services?
Keystone Wealth Services’ direct owners are Shattuck Lamm and Mark Thatcher, each holding 50% or less.
Source: Form ADV Part 1A, Schedules A and B, filed 6 August 2026
How does Keystone Wealth Services get paid?
Keystone Wealth Services 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
How do I contact Keystone Wealth Services?
Keystone Wealth Services’ main office is at 73575 El Paseo, Suite 2300, Palm Desert, CA 92260. Its phone number is 760-818-7020.