AdvisorCensus / Financial advisors / Maine / O'Brien Asset Management
O'Brien Asset Management
Filed as O'BRIEN ASSET MANAGEMENT · Legal name O'Brien Asset Management LLC
O'Brien Asset Management is a state-registered investment advisory firm, registered since 2007, reporting $25 million to $100 million in regulatory assets under management in its Form ADV filing dated March 31, 2026.
Quick answers
From the filingHow is O'Brien Asset Management compensated?
On its Form ADV (Item 5.E, October 2026), O'Brien Asset Management reports these compensation arrangements: a percentage of assets under its management; fixed fees (other than subscription fees).
Is O'Brien Asset Management registered with the SEC or a state?
O'Brien Asset Management is a state-registered investment advisory firm, registered since 2007. Status as filed: APPROVED. CRD 144502.
How much does O'Brien Asset Management manage?
O'Brien Asset Management reports $34,295,137 in regulatory assets under management in its Form ADV filing dated March 31, 2026 (97% discretionary).
What types of clients does O'Brien Asset Management serve?
By number of clients on Form ADV Item 5.D: individuals (other than high net worth individuals) (31); high net worth individuals (11).
Does O'Brien Asset Management report any disciplinary disclosures?
Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's public record on IAPD: https://adviserinfo.sec.gov/firm/summary/144502
From the Form ADV filing
Every figure below is as the firm filed it with regulators, as of October 2026.
How the firm is compensated
Item 5.E- A percentage of assets under your management
- Fixed fees (other than subscription fees)
Item 5.E lists how the firm is compensated for its advice; Items 5.B, 6.A, and 7.A show whether its people or related companies can also earn commissions. Percentage of assets, fixed, hourly, subscription, and performance-based fees come from clients (a performance-based fee depends on investment results); commissions come with a sale or a trade, often from the company behind the product. How fees, commissions, and other arrangements differ
Regulatory assets under management
Item 5.F$34,295,137 as of October 2026, filing dated March 31, 2026.
A measure of scale, not skill or returns. Discretionary means the firm decides trades; non-discretionary means clients approve each one. What assets under management means
Who the firm serves
Item 5.DA firm with no individual clients is an institutional manager even if it manages billions; the mix tells you whom the practice is built around.
Advisory services
Item 5.G- Financial planning services
- Portfolio management for individuals and/or small businesses
Registration and firm details
Items 1, 2, 5- Legal name
- O'Brien Asset Management LLC
- Registration
- State-registered investment adviser. Status as filed: APPROVED.
- Registered since
- 2007 (19 years)
- Employees
- Total: 1. Performing investment advisory functions: 1.
- Wrap fee program participation
- No.
- States registered or notice-filed
-
1 state or jurisdiction
State-registered investment advisers are examined by their state securities regulator. SEC, state, and exempt registration
Disclosures
Item 11None Reports no disclosure items on Form ADV Item 11. View on IAPD.
Item 11 asks about criminal, regulatory, and civil events involving the firm and its advisory personnel. The detail of each yes answer is on the IAPD record. Reading a firm's disclosures
Changes in the filing
Last 12 monthsNo changes to these filed facts in the last 12 months of filing data.
Compared month to month from the SEC's monthly adviser data and the state compilation feed. Owners and control persons are summarized, never named.
Websites listed on Form ADV
Item 1.ISource: Form ADV, as of October 2026. Values appear as filed; a value the firm did not report is shown as "Not reported."
Cite this page
AdvisorCensus. O'Brien Asset Management (CRD 144502): Form ADV filing data as of October 2026. https://advisorcensus.com/firm/o-brien-asset-management-144502