Investment adviser · CRD 309150
MAINSTREET RIA LLC
Investment adviser filing (IA)
O'FALLON, MO, United States · Form ADV filed Sep 29, 2026
- Regulatory AUM
- $472M Form ADV · Item 5.F
- Client accounts
- 141 Accounts, not individual clients
- Employees
- 3 Reported in this filing
- Advisory professionals
- 3 Investment advisory functions
Who they report serving
Form ADV · Item 5.DClient types and their share of reported regulatory assets.
| Client type | Clients | Regulatory assets | Share of AUM |
|---|---|---|---|
| Retirement plans | 5 | $395,862,700 | 83.9% |
| Individuals | 124 | $47,176,513 | 10.0% |
| High-net-worth individuals | 12 | $28,712,367 | 6.1% |
Filing source
Form ADV 2134343 · Sep 29, 2026 · Item 5.D
Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.
Private funds & service providers
0 Private fundsThe count excludes feeder funds. Funds in the latest filing appear first, ordered by reported gross assets. Earlier funds retain their last reported values.
This filing answers No to private funds.
Services & filing details
Most recent filing: Sep 29, 2026. View historical filings
Reported services
Financial planning · Individual portfolio management · Pension consulting · Educational seminars
Compensation
Percentage of assets · Hourly · Fixed
Principal office
6700 KEATON CORPORATE PARKWAY, SUITE 102O'FALLON, MO, 63368, United States
CRD 309150
Filing source
Form ADV 2134343 · Sep 29, 2026 · Items 1 & 5
Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.