# Black Mammoth LLC

> Black Mammoth LLC is a state-registered investment advisory firm in Ankeny, IA, registered since 2020, reporting under $25 million in regulatory assets under management in its Form ADV filing dated March 31, 2026.

- CRD: 310508
- Filed as: BLACK MAMMOTH LLC
- Registration: State-registered investment adviser (status as filed: APPROVED)
- Location: Ankeny, IA
- Filing period: October 2026
- Form ADV filing dated: March 31, 2026
- Public record (IAPD): https://adviserinfo.sec.gov/firm/summary/310508
- AdvisorCensus page: https://advisorcensus.com/firm/black-mammoth-llc-ankeny-ia-310508

## Quick answers

**How is Black Mammoth LLC compensated?**
On its Form ADV (Item 5.E, October 2026), Black Mammoth LLC reports these compensation arrangements: a percentage of assets under its management; hourly charges; fixed fees (other than subscription fees); other. The amounts are in Item 5 of its Form ADV Part 2A brochure.

**Where is Black Mammoth LLC located?**
Black Mammoth LLC's principal office is in Ankeny, IA, according to its Form ADV.

**Is Black Mammoth LLC registered with the SEC or a state?**
Black Mammoth LLC is a state-registered investment advisory firm, registered since 2020. Status as filed: APPROVED. CRD 310508.

**How much does Black Mammoth LLC manage?**
Black Mammoth LLC reports $2,487,752 in regulatory assets under management in its Form ADV filing dated March 31, 2026 (100% discretionary).

**What types of clients does Black Mammoth LLC serve?**
By number of clients on Form ADV Item 5.D: individuals (other than high net worth individuals) (26); corporations or other businesses not listed above (5).

**Does Black Mammoth LLC 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/310508

## From the Form ADV filing

### Compensation (Item 5.E)
- A percentage of assets under your management
- Hourly charges
- Fixed fees (other than subscription fees)
- Other

### Regulatory assets under management (Item 5.F)
- Total: $2,487,752
- Discretionary: $2,487,752
- Non-discretionary: $0

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Individuals (other than high net worth individuals) | 26 | $1,861,779 |
| Corporations or other businesses not listed above | 5 | $625,973 |

### Advisory services (Item 5.G)
- Financial planning services
- Portfolio management for individuals and/or small businesses
- Selection of other advisers (including private fund managers)
- Other

### Firm details
- Registered since: 2020 (5 years)
- Employees: 1 total, 1 performing advisory functions
- Wrap fee program participation: No
- States registered or notice-filed: FL, IA
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Websites listed on Form ADV (Item 1.I)
- blackmammoth.com
- Facebook @blackmammothwealth
- Facebook @stoy.hall
- Instagram @blackmammoth1
- Instagram @stoyhall
- LinkedIn @blackmammoth
- LinkedIn @stoyhall
- TikTok @stoyhall
- X @Stoy_Hall
- X @blackmammoth_

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Black Mammoth LLC (CRD 310508): Form ADV filing data as of October 2026.