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THOMPSON INVESTMENT MANAGEMENT, INC.
CRD 129609File 801-62562
APPROVED
Retail clients
Custody
Filing as of Sep 11, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$3.08B
Top 25% of cohort (national)
Discretionary AUM
$3.08B
Clients
485
941 accounts
Employees
17
Top 25% of cohort in WI
Identity & registration
ADV Item 1- Organization form
- Corporation
- Firm type
- Registered
- SEC region
- CHRO
- Registration date
- Dec 5, 2003
- Principal office
- 1255 FOURIER DRIVE, SUITE 200, MADISON, WI, 53717
- Phone
- 608-827-5700
- Website
- http://thompsonim.com
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $3.08B
- Discretionary AUM
- $3.08B
- Non-discretionary AUM
- $0
- Discretionary accounts
- 941
- Non-discretionary accounts
- 0
- Total accounts
- 941
- AUM per client
- $6.4M
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Other | Fewer than 5 | $9K |
| Investment companies | 1 | $2.15B |
| Charitable organizations | 10 | $69.4M |
| High net worth individuals | 153 | $681.5M |
| Pension and profit sharing plans | 33 | $106.8M |
| Individuals (other than high net worth individuals) | 288 | $79.2M |
Compensation & activities
ADV Items 5E, 5GCompensation
- Fixed fees
- A percentage of assets under your management
Advisory activities
- Portfolio management for other
- Portfolio management for businesses
- Portfolio management for investment companies
- Portfolio management for individuals and/or small businesses
Custody
ADV Item 9- Firm Custody Cash
- Yes
- Firm Custody Assets
- No
- Firm Custody Clients
- No
- Firm Custody Securities
- No
- Related Person Custody Cash
- No
- Related Person Custody Assets
- No
- Related Person Custody Clients
- No
- Related Person Custody Securities
- No
Disclosure events
ADV Item 11This firm answered no to every Item 11 disclosure question in this filing.
Filed changes
| Date | Field | From | To | Change |
|---|---|---|---|---|
| Apr 1, 2026 | Employees | 18 | 17 | decreased by1 |
| Apr 1, 2026 | Clients | 470 | 485 | increased by15 |
| Apr 1, 2026 | AUM | $2,659,813,000 | $3,084,417,000 | increased by$424,604,000 |
| Apr 1, 2026 | Accounts | 882 | 941 | increased by59 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 21 | 18 | decreased by3 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 358 | 470 | increased by112 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $3,371,912,000 | $2,659,813,000 | decreased by$712,099,000 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 685 | 882 | increased by197 |
| Apr 1, 2022 | Employees | 18 | 21 | increased by3 |
| Apr 1, 2022 | Clients | 328 | 358 | increased by30 |
| Apr 1, 2022 | AUM | $2,979,304,000 | $3,371,912,000 | increased by$392,608,000 |
| Apr 1, 2022 | Accounts | 625 | 685 | increased by60 |
| Apr 1, 2021 | Registration | — | APPROVED |
On Form 5500, an adviser usually appears as a plan service provider (Schedule C), not the plan sponsor.
See plans that list “THOMPSON INVESTMENT” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“THOMPSON INVESTMENT” may also match similarly-named firms). Confirm identity against each filing.
Every value above is reproduced from this firm's Form ADV filing. Fields the firm left blank are shown as “Not reported” rather than filled in from other sources.