San Rafael, CA Office
TeamData sourced from SEC public records (and other sources when available). Refreshed weekly • Updated today.
Mariner
Enterprise
Firm-wide stats for Mariner
Clients per advisor
55 TypicalAvg AUM per client
$2,116,909 Very HighHNW client ratio
41% Very HighAbout
Mariner serves a broad mix of clients — individuals (including high‑net‑worth households), pension and profit‑sharing plans, trusts, estates, charitable organizations, corporations and private funds — through investment management, financial planning and reporting, retirement plan consulting, and access to pooled vehicles and third‑party managers. The firm also offers coordinated tax services, Core Family Office (CFO) services and employer financial‑wellness tools in addition to traditional portfolio management.
The firm generally implements discretionary, customized portfolios overseen by an Investment Committee and supported by an internal portfolio management team, combining in‑house research with allocations to third‑party managers and platforms (including CAIS access and SEI sub‑advised models). Its strategies span equity and fixed income mandates as well as alternatives, structured notes, options, direct indexing and digital assets, and it provides ERISA 3(38) retirement plan solutions such as the Pathway DC program.
What is less common for a firm of this enterprise scale is the depth of tax and accounting integration: Mariner maintains CPAs and enrolled agents, provides stand‑alone and coordinated tax compliance, planning and preparation, and is affiliated with a specialty tax services entity. The brochure also highlights administrative CFO capabilities (including bill payment and platform administrator authority) and a Financial Wellness Platform for employer clients — operational offerings that are relatively atypical among large advisory enterprises.
Based on Mariner
Location
899 Northgate Dr.
San Rafael CA 94903
Advisors at this office
3
Advisors at this office
Spence S
Series 63, Series 65
San Rafael, CA
Mariner
Spence Sarazin is a financial advisor at Mariner with Series 65 and Series 63 credentials and two years of industry experience. His prior roles include positions at Bridger Fund Inc, Anderson Roberts Financial Inc, and JP Morgan Chase & Co. He serves as Junior Board Treasurer for the Boys & Girls Clubs of Northwest San Diego. Mariner provides investment management, financial planning, and retirement plan consulting to a wide range of clients, including individuals, pension plans, trusts, and corporations. The firm offers customized, discretionary portfolio solutions supported by in-house research and third-party managers, along with integrated tax, accounting, and financial wellness services.
Brianna H
Series 65
San Rafael, CA
Mariner
Brianna Hasbrook is a Series 65 licensed financial advisor with seven years of industry experience. She has worked at Mariner since 2025 and before that held roles at Defined Financial Planning LLC and Shone Asset Management. Mariner serves a diverse client base including individuals, high-net-worth households, pension plans, trusts, estates, and charitable organizations, offering investment management, financial planning, retirement consulting, and access to pooled vehicles and third-party managers. The firm combines in-house research with external allocations across a wide range of strategies and provides integrated tax, accounting, and CFO services alongside traditional portfolio management.
Samuel G
CFP®, Series 65, Series 63
San Rafael, CA
Mariner
Samuel Gaeta is a CFP® with 10 years of industry experience, currently serving as a financial advisor at Mariner. His prior roles include positions at Defined Financial Planning LLC, J.W. Cole Financial, Global Financial Private Capital, and Wealth Beta. Mariner serves a diverse client base including individuals, pension plans, trusts, and corporations, offering investment management, financial planning, retirement plan consulting, and coordinated tax services. The firm employs discretionary, customized portfolios overseen by an Investment Committee and integrates in-house research with third-party managers across a wide range of asset classes and strategies.
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