Mount Tamalpais Asset Management provides financial planning and portfolio management for individuals and small businesses. Financial planning was provided to 1–10 clients last fiscal year.
Mount Tamalpais Asset Management reports 264 clients. They include 187 individual clients, 74 high-net-worth individuals and 2 other clients. Of its assets, 100.0% ($263M across 689 accounts) are managed with discretion.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 71% | 23% |
| High-net-worth individuals | 28% | 77% |
| Charitable organizations | <1% | <1% |
| Other | <1% | <1% |
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 187 | $61.2M | 23.3% | $327K |
| High-net-worth individuals | 74 | $201M | 76.5% | $2.71M |
| Charitable organizations | Fewer than 5 | $64.8K | 0.0% | $64.8K |
| Other | Fewer than 5 | $345K | 0.1% | $172K |
| Total | 264 | $263M | 100% | — |
- Clients
- 187
- Regulatory AUM
- $61.2M
- AUM share
- 23.3%
- Avg. per client
- $327K
- Clients
- 74
- Regulatory AUM
- $201M
- AUM share
- 76.5%
- Avg. per client
- $2.71M
- Clients
- Fewer than 5
- Regulatory AUM
- $64.8K
- AUM share
- 0.0%
- Avg. per client
- $64.8K
- Clients
- Fewer than 5
- Regulatory AUM
- $345K
- AUM share
- 0.1%
- Avg. per client
- $172K
Total
- Clients
- 264
- Regulatory AUM
- $263M
- AUM share
- 100%
- Avg. per client
- —
- 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
- 1–10
Mount Tamalpais Asset Management charges 0.50%–1.00% a year for its Portfolio Management Fees. Each asset band is charged at its own rate. The fee is billed in advance.
| Asset band | Annual rate |
|---|---|
| $0–$2M | 1.00% |
| $2M–$5M | 0.75% |
| $5M and above | 0.50% |
Fee details and sources
Michael Bristow owns 75% or more of Mount Tamalpais Asset Management. The leadership team of Mount Tamalpais Asset Management includes Chief Compliance Officer Michael Bristow. It has 8 employees, 7 of them in advisory roles.
Leadership
- Michael BristowManaging Member & Chief Compliance Officer
Investment adviser representatives
7 representatives listed in the SEC register as of 9 October 2026.
- Wayne Cameron Best
- Michael Anthony Bristow
- Joseph Daly Fierro
- Richard Wayne Gibson
- Christopher John Martin
- Bradley Scott Stephens
- Lincoln Thomas Wells
Staff
- 8 employees
- 7 in advisory functions
- 7 state-registered reps
- 1 broker-dealer rep
- Owns 75% or more of Mount Tamalpais Asset Management, LLC
Michael Bristow
Control person · since February 2017
Mount Tamalpais Asset Management’s regulatory assets grew from $209M (June 2025) to $263M (August 2026); clients fell from 683 to 264 and employees rose from 5 to 8.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| August 2026 | $263M | 264 | 8 | 3 |
| June 2025 | $209M | 683 | 5 | 3 |
Besides its headquarters, Mount Tamalpais Asset Management has 2 offices (1 private residence, listed without an address), with 2 listed addresses in California.
California · 2 listed addresses
- 900 Larkspur Landing Circle, Suite 100, LarkspurHQ
- 5199 E. Pacific Coast Highway, Long Beach
Contact and registration details
- Legal name
- Mount Tamalpais Asset Management, LLC
- Headquarters
- 900 Larkspur Landing Circle, Suite 100, Larkspur, CA 94939
- Website
- tamalpaisam.com
- Phone
- 415-723-8300
- SEC file
- 801-132936
- Founded
- 2017
- Structure
- California LLC
- Fiscal year end
- December
Mount Tamalpais Asset Management uses Charles Schwab ($257M, 100%) and Interactive Brokers ($1.02M, 0%) as custodians for its separately managed accounts. Mount Tamalpais Asset Management does not have custody of client assets.
- Charles SchwabCharles Schwab & Co., Inc. · Westlake, TX · $257M100%
- Interactive BrokersInteractive Brokers LLC · Greenwich, CT · $1.02M0%
At year end, Mount Tamalpais Asset Management’s separately managed accounts were mostly in stocks (64%) and bonds (23%).
What the accounts hold
- Stocks64%
- Exchange-traded equities63%
- Non-exchange-traded equities1%
- Funds4%
- Bonds23%
- Cash9%
- Other2%
- Derivatives1%
- Not classified1%
How many clients does Mount Tamalpais Asset Management have?
Mount Tamalpais Asset Management has 264 clients and manages $263 million for them, as of August 2026. They include 187 individual clients, 74 high-net-worth individuals and 2 other clients.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 31 August 2026
What services does Mount Tamalpais Asset Management offer?
Mount Tamalpais Asset Management 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 Mount Tamalpais Asset Management charge?
Mount Tamalpais Asset Management charges 0.50%–1.00% a year for its Portfolio Management Fees. Each asset band is charged at its own rate. The fee is billed in advance.
Source: ADV PART 2A-TAMALPAIS ASSET MANAGEMENT, LLC, filed 24 March 2026
Which custodians does Mount Tamalpais Asset Management use?
Mount Tamalpais Asset Management’s separately managed account assets are held at Charles Schwab & Co., Inc. (Westlake, TX), with $257M and Interactive Brokers LLC (Greenwich, CT), with $1.02M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 31 August 2026
How many financial advisors does Mount Tamalpais Asset Management have?
Mount Tamalpais Asset Management has 7 investment adviser representatives registered with state securities authorities, out of 8 employees, and 7 perform investment advisory functions. 1 employee is a registered representative of a broker-dealer and 0 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 Mount Tamalpais Asset Management invest in?
At the end of its last fiscal year, Mount Tamalpais Asset Management’s separately managed accounts held 63% exchange-traded equities, 23% U.S. government and agency bonds, 9% cash and equivalents, 4% pooled vehicles (private funds and similar), 1% non-exchange-traded equities, 1% derivatives and 1% other. The 1% other category is described as: Not Classified.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Who owns Mount Tamalpais Asset Management?
Mount Tamalpais Asset Management’s direct owner is Michael Bristow (75% or more).
Source: Form ADV Part 1A, Schedules A and B, filed 31 August 2026
How does Mount Tamalpais Asset Management get paid?
Mount Tamalpais Asset Management is paid through a percentage of assets under management. 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 Mount Tamalpais Asset Management registered with the SEC?
Yes, Mount Tamalpais Asset Management has been registered with the SEC as an investment adviser since 6 June 2025. Its CRD number is 301017 and its SEC file number is 801-132936.
Source: Form ADV Part 1A, Item 1, filed 31 August 2026; IAPD firm record
How do I contact Mount Tamalpais Asset Management?
Mount Tamalpais Asset Management’s main office is at 900 Larkspur Landing Circle, Suite 100, Larkspur, CA 94939. Its phone number is 415-723-8300. Its website is tamalpaisam.com.