Castellum Capital Management LLC
Updated today
Data sourced from SEC public records (and other sources when available). Refreshed weekly • Updated today.
Client assets under management
$2,839,955
Clients
12
75% high-net worth
Advisors
1
of 1 employees
Firm type
Independent
1 advisor
Fewer clients per advisor generally means more personalized, proactive service. Higher ratios may reflect streamlined models or lower minimums.
Clients per advisor
12
LowAverage account size
$236,663
About
The firm provides discretionary portfolio management and investment advisory services to individual clients and also accepts institutional mandates, including separately managed accounts. The brochure notes the firm typically charges percentage-of-assets fees and discloses performance information in its materials.
The firm implements an Opportunistic Value Investment Strategy that was developed and initially funded with the principal’s personal capital; the principal’s background includes analyst work at a long‑short hedge fund focused on financial companies and operational experience in a bank. The firm’s disclosures indicate it may use borrowing and derivatives within separately managed accounts and may accept performance‑based fee arrangements for certain clients.
A distinctive element is the principal’s ownership stake and board membership at Security Savings Bank, a family‑owned bank, a relationship the brochure states does not create a professional affiliation for advisory services. The combination of an owner‑funded strategy track record, public performance disclosure, willingness to manage institutional accounts, and the potential use of leverage, derivatives, and performance fees sets the firm apart from most independent peers.
Client services
Portfolio management
Expertise
Active portfolio management
Main office location
Castellum Capital Management LLC
Sioux Falls SD, United States
Number of offices
1
Most active in
Castellum Capital Management LLC has reported serving >5 clients in these states in the last 12 months.
Iowa · Minnesota · South Dakota
Disclosures
Firm disclosures are reported in Form ADV Part 1A, Item 11. They include criminal charges, regulatory actions, civil proceedings, and professional disciplinary events involving the firm or its advisory affiliates.
Exclamation point means they have disclosures of this type. Check mark means no disclosures of this type were found.
Business activities & affiliations
These affiliations may expand the services this firm offers and, in some cases, how they are compensated.
Is active or affiliated with:
Bank
They're affiliated with a bank that may offer its own financial products and services.
Is not active or affiliated with:
-
Insurance agent
They sell insurance products and may earn commissions on those sales.
-
Broker-dealer / trader
They provide brokerage services and may earn transaction-based compensation in addition to advisory fees.
-
Trust company
They provide trust and estate administration services, typically for separate fees.
-
Fund sponsor
They manage or sponsor investment funds and may earn management or performance-based fees if clients invest in them.
-
Accountant / CPA / tax prep
They offer tax and accounting services, typically for separate fees.
-
Lawyer
They provide legal services, typically billed separately.
-
Real estate agent
They facilitate real estate transactions and may earn commissions.
-
Other specialized services
They may provide services such as pension consulting or municipal advisory work, typically for separate fees.
Forms ADV
Quick links
Advisors at this firm
Not sure where to start?
We'll help you think it through – whether you ultimately need an advisor or not.
Warmer provides personalized recommendations and introductions to independent fiduciary advisors. We do not supervise advisors, manage or hold assets, guarantee performance, or provide advice about specific investments.
Each advisor listed on our site is an independent fiduciary responsible for their own advice. Warmer may receive fees from advisors for participation or referrals; these fees are paid by advisors and do not affect the fees clients pay for advisory services.
For advisor listings, we rely on sources including public filings and data provided by advisors, and we cannot guarantee that all information is current or accurate. Please review an advisor's Form ADV and do your own diligence before entering into an advisory relationship.
By using our service, you agree to Warmer's Terms of Service and Advisory Agreement and Privacy Policy. Logos provided by Logo.dev
© 2026 Warmer Holdings Inc. ("Warmer")