No commissions, no ads, no advice. This Mariner Wealth Advisors profile draws only on public records, each linked so you can confirm it yourself.

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1. Check the SEC adviser record. Open the SEC's IAPD record for Mariner Wealth Advisors (CRD #140195) and confirm its registration.

2. Read the filings. Review the Form ADV / Form CRS and any disclosure section linked from the IAPD page.

3. Confirm the entity. Match CRD #140195 / Mariner so you're reading the right firm.

The short answer: is Mariner Wealth Advisors a fiduciary?

Yes. Mariner Wealth Advisors is a fiduciary when it acts as your investment adviser, and with $125.4 billion in client assets it is among the larger SEC-registered investment advisers. Publicly, it files with the SEC as Mariner (CRD #140195). According to its latest Form ADV (filed October 2, 2026), the firm reported $125.4 billion in regulatory assets under management (a firm-reported figure). Its Form ADV (Item 5.E) lists how it is paid: a percentage of assets under management, hourly charges, and fixed fees. You don't have to take this on trust. The filings are public, and checking them is quick.

Its Form ADV also reports that a related person is a broker-dealer (Item 7.A), and brokerage accounts fall under Regulation Best Interest instead. Which standard applies depends on the account, and the firm has to tell you which capacity covers each one.

Our take: two items on the record are worth reviewing before signing: the firm's disciplinary disclosures on IAPD and its related broker-dealer, because together they decide which standard of care and which kind of pay apply to each of your accounts.

What "fiduciary" means: a fiduciary is legally bound to place a client's interests above its own. (More on fiduciary duty)

Mariner Wealth Advisors at a glance

✅ Verified from public filings, last checked October 5, 2026. Mariner Wealth Advisors (SEC CRD #140195) is a fiduciary when acting as your adviser, on an advisory-fee basis, with $125.4 billion in regulatory assets under management. Every figure below links to its primary source.

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Mariner Wealth Advisors fees: what you'll pay

Mariner charges advisory fees, and according to its Form ADV (Item 5.E) it reports no commissions for its advisory services. That covers the advisory side only. The same filing reports broker-dealer, insurance or other sales activity by the firm or a related company, business that can be paid by commissions. So the fee schedule is half the picture: for each account or product, find out whether the pay is a fee or a commission. The details are in its Form ADV Part 2A.

Advisory fees are what clients pay the adviser directly. Commissions earned through a related broker-dealer or insurance business are a separate source of pay. For how the two models compare, see Fee-only financial advisor: costs and how to find one. If you're judging whether the price is fair, Are you paying too much? Why that might be the wrong question argues for weighing value, not the rate alone.

Who owns Mariner Wealth Advisors, and what conflicts does it disclose?

Mariner Wealth Advisors' ownership is spelled out in the public record. Schedule A of its Form ADV names Mariner Wealth Advisors, LLC as the firm's direct owner. The near-identical names reflect the filing structure: the registered adviser files under the legal name Mariner, and Schedule A lists the LLC that holds it. Schedule A covers direct owners only. Anyone further up the chain would appear in Schedule B (indirect owners), which this profile hasn't summarized, so open it on IAPD if the ultimate owner matters to you. (Form ADV Schedule A)

Its Form ADV Part 2A describes the firm's conflicts of interest, including how it and its advisers are paid.

Mariner Wealth Advisors SEC record: disclosures

To check Mariner Wealth Advisors' regulatory record, start with the firm's own filings. Mariner Wealth Advisors' Form ADV answers Yes to one or more disciplinary-history questions. A disclosure can be a regulatory, civil or criminal matter involving the firm or a related person. Read each item in context on IAPD before drawing conclusions. If there are Mariner Wealth Advisors disclosures to read, the public record is where they are, and where they should be read.

"Is Mariner Wealth Advisors legit?" comes up a lot. Its registration, CRD and filings are public and verifiable. That confirms it is registered and regulated; it doesn't settle what the disclosures involve or whether the firm suits you. The part worth your time is what you're paying and earning.

Reading Mariner Wealth Advisors reviews against the public record

A star rating reflects one client's experience. Mariner's filing describes the whole book, and it is concentrated. According to Item 5.D, high-net-worth individuals are about 40% of its clients yet hold about 84% of client assets ($104.87 billion of $125.4 billion). Other individuals are about 58% of clients and hold about 9% ($10.67 billion). The firm's assets are concentrated among high-net-worth clients, so a review may reflect a different account size than yours.

Three record checks belong next to any review: how the firm and its affiliates are paid, who owns it and what conflicts Part 2A discloses, and the disciplinary answers on IAPD. Use reviews alongside the record, not in place of it.

How to verify Mariner Wealth Advisors yourself

Verifying this directly takes three steps:

1. SEC adviser record (IAPD): https://adviserinfo.sec.gov/firm/summary/140195.

2. Form ADV / CRS: linked from the IAPD page.

3. Confirm the entity: match Mariner Wealth Advisors (CRD #140195, legal name Mariner) so you're reading the right firm.

Comparing firms? The same checks apply elsewhere, and the Truthifi /advisors hub collects every fact pack in the series.

What Mariner Wealth Advisors does and who it serves

On its Form ADV, Mariner Wealth Advisors reports providing financial planning, portfolio management for individuals and small businesses, portfolio management (pooled vehicles), portfolio management for businesses and institutions, pension consulting, selection of other advisers, newsletters, and educational seminars.

According to IAPD, it has been registered with the SEC since April 24, 2006, makes notice filings in 53 jurisdictions, and reports 1,889 employees, 933 of them (about 49%) in investment advisory roles. Its main office is in Overland Park, KS.

It reports providing financial planning to about 41,000 clients in its last fiscal year (Form ADV Item 5.H).

Its Form ADV (Item 5.D) breaks its clients down by type, about 55,512 in all:

The asset column adds up to roughly the $125.4 billion headline. It reports 186,791 client accounts (Item 5.F): 184,275 discretionary, about 99% of the total, meaning the firm can trade without seeking your approval first, and 2,516 non-discretionary.

Why three different client numbers? They count different things. About 41,000 is planning clients (Item 5.H), 55,512 is clients by type (Item 5.D), and 186,791 is accounts (Item 5.F). A planning client may also be a portfolio client, and one client can hold several accounts, so the figures neither add up nor contradict each other.

It reports that it or a related person has custody of certain client assets, which brings extra safeguards such as surprise examinations. The specifics are in its Form ADV.

One implication few reviews raise: when about 99% of accounts are discretionary, trades happen without a call to you first. Your statements and trade confirmations then become the main record of what was done in your name, and reading them against the Part 2A fee schedule is how a fiduciary label turns into something you can check.

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The firm checks out in minutes. The real work is seeing everything you hold, together.

Confirming Mariner Wealth Advisors is registered takes a few minutes. However diligent the advisor, they see a fraction of the picture by default: the old 401(k) at a former employer, a spouse's holdings, fees folded into a fund. This is where Truthifi comes in.

How Truthifi can help

Truthifi links your accounts read-only and shows what you own, how it's allocated, how it's performing and where the risk sits, including single-stock exposure, returns next to a benchmark, a fee breakdown of the fees on each account, by type, and your Truthifi Score. You can share the accounts you choose with your advisor at Mariner Wealth Advisors.

Prefer your own AI? A paid Truthifi plan lets you connect an AI assistant that supports MCP sign-in, such as Claude. Truthifi Connect is the lighter membership for people who only want to use their own assistant. Asking that assistant about your fees takes one of the fuller tiers (Monitoring or Monitoring Plus+); what each tier includes and costs is laid out side by side on the pricing page.

Ask AI about your Mariner Wealth Advisors accounts

Once your accounts are connected read-only, you can ask in plain English:

• "What do I own across my Mariner Wealth Advisors accounts and everything else, and how is it allocated?"

• "What am I paying in fees, in total, across these accounts?"

Try it with Truthifi: start for free at app.truthifi.com and run a Monitoring Checkup (limits apply).

No commissions, no ads, no advice: Truthifi is not an investment adviser and doesn't give investment, tax or legal advice. Its access to your bank and brokerage accounts is read-only. Start free (limits apply). Monitoring Checkup is free and, per Truthifi platform data, lets you link up to 10 connections. Plans and limits are on the pricing page → truthifi.com.

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FAQ

Is Mariner Wealth Advisors a fiduciary? Yes, when acting as your adviser. Its Form ADV reports a related person that is a broker-dealer, and brokerage accounts fall under Regulation Best Interest instead. Ask which capacity covers each of your accounts.

Is Mariner Wealth Advisors fee-only? Not necessarily. Its Form ADV (Item 5.E) reports no commissions for advisory services, but the filing also reports broker-dealer, insurance or other sales activity by the firm or a related company, which can be paid differently. Find out how everyone you deal with is paid. The details are in its Form ADV Part 2A.

Who owns Mariner Wealth Advisors? Schedule A of its Form ADV names Mariner Wealth Advisors, LLC as the direct owner of the registered adviser, which files under the legal name Mariner. Any indirect owners further up the chain would be listed in Schedule B.

Does Mariner Wealth Advisors have complaints or disclosures? Yes. Its Form ADV answers Yes to one or more disciplinary-history questions. Read each item on IAPD, in context. A disclosure is not by itself proof of current wrongdoing.

Is Mariner Wealth Advisors legit? The firm is registered with the SEC (CRD #140195) and its filings are public on the SEC's IAPD site, which confirms it is a real, regulated firm. Registration doesn't tell you whether it's the right fit or what you'll pay, so read the fee and conflict sections of its Form ADV.

Can AI help me check whether I'm getting good value? Yes. Start free (limits apply): Monitoring Checkup is free and lets you link up to 10 connections. You can also connect an AI assistant you already use (such as Claude). On Monitoring or Monitoring Plus+ you can ask it, in plain English, about the fees on each of your accounts. Truthifi is not an investment adviser and doesn't give investment, tax or legal advice.

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About this profile

Truthifi built this profile from the firm's own SEC filings (Form ADV and, where filed, Form CRS). Every page is reviewed by the Truthifi Team before publishing. The Truthifi advisor fact packs are an ongoing series checking U.S. investment advisers against their public filings, one firm at a time.

Read next from the Truthifi blog

• What is a fiduciary?

• Fee-only financial advisor: costs and how to find one

• Are you paying too much? Why that might be the wrong question

• How to ask AI about your real investment accounts

• Robo-advisor vs. human financial advisor: which is better?

• All advisor fact packs on Truthifi

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A note on sources. The facts on this page come from publicly available documents, Mariner Wealth Advisors' SEC filings, each linked inline so you can verify it yourself (SEC data current as of October 5, 2026). This is general information, not financial or legal advice, and Truthifi is not affiliated with Mariner Wealth Advisors. Regulatory records change, so always confirm against the official sources linked above. Spot something that should be corrected? Email us at support@truthifi.com.