![Michael Schlumpberger](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Michael Schlumpberger
Chief Operating Officer at
MIDWEST LITHIUM LIMITED
Net worth: 217 588 $ as of 31/07/2026
Profile
Michael Xavier Schlumpberger currently serves as Non-Executive Director at Rapid Critical Metals Ltd. since 2025, Independent Non-Executive Director at Guardian Metal Resources Plc since 2025, Chief Operations Officer at Midwest Lithium Ltd., and Co-Manager at Golden Metal Resources LLC.
Former roles include Chief Executive Officer, Director & MD at American Pacific Borates Ltd. from 2017 to 2021, Chief Executive Officer at Fort Cady (California) Corp., Chief Operating Officer at Passport Potash, Inc., and Executive General Manager-Operations at Highfield Resources Ltd. Education includes an undergraduate degree from the University of Missouri in 1985 and an MBA from East Carolina University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 31/12/2024 | 10,099,373 ( 0.84% ) | 212 794 $ | 31/07/2026 | |
| 17/07/2026 | 2,500 ( 0% ) | 4 794 $ | 31/07/2026 |
Michael Schlumpberger active positions
| Companies | Position | Start |
|---|---|---|
| MIDWEST LITHIUM LIMITED | Chief Operating Officer | - |
| RAPID CRITICAL METALS LIMITED | Director/Board Member | 04/11/2024 |
| GUARDIAN METAL RESOURCES PLC | Director/Board Member | 11/11/2025 |
Former positions of Michael Schlumpberger
| Companies | Position | End |
|---|---|---|
American Pacific Borates Ltd.
 American Pacific Borates Ltd. Other Metals/MineralsNon-Energy Minerals Produces borate and lithium | Chief Executive Officer | 28/04/2021 |
| HIGHFIELD RESOURCES LIMITED | Chief Operating Officer | 01/05/2017 |
Fort Cady (California) Corp.
 Fort Cady (California) Corp. Other Metals/MineralsNon-Energy Minerals Engages in exploration of boron & lithium mines | Chief Executive Officer | - |
| PASSPORT POTASH INC | Chief Operating Officer | - |
Training of Michael Schlumpberger
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
79
1st degree connections
9
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 9 |
|---|---|
Passport Potash, Inc.
 Passport Potash, Inc. Other Metals/MineralsNon-Energy Minerals Engages in exploration and development of potash properties | Non-Energy Minerals |
University of Missouri
 University of Missouri Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
East Carolina University
 East Carolina University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Highfield Resources Ltd.
 Highfield Resources Ltd. Other Metals/MineralsNon-Energy Minerals Engages in mining and exploration of potash properties | Non-Energy Minerals |
American Pacific Borates Ltd.
American Pacific Borates Ltd. Other Metals/MineralsNon-Energy Minerals Produces borate and lithium | Non-Energy Minerals |
Fort Cady (California) Corp.
Fort Cady (California) Corp. Other Metals/MineralsNon-Energy Minerals Engages in exploration of boron & lithium mines | Non-Energy Minerals |
Armada Metals Ltd.
 Armada Metals Ltd. Other Metals/MineralsNon-Energy Minerals Operates as mineral exploration company | Non-Energy Minerals |
Golden Metal Resources Plc
 Golden Metal Resources Plc Other Metals/MineralsNon-Energy Minerals Engages in mineral mining and exploration activities | Non-Energy Minerals |
Midwest Lithium Ltd.
 Midwest Lithium Ltd. Other Metals/MineralsNon-Energy Minerals Engages in exploration of hard rock lithium | Non-Energy Minerals |
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