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Nilsa Guerrero-Mahon
Director/Board Member at
NIOCORP DEVELOPMENTS LTD.
Net worth: 193 025 $ as of 2026-08-30
Profile
Ms. Nilsa Guerrero-Mahon is an Independent Director at NioCorp Developments Ltd. and a Principal at Ng Mahon Business Consulting LLC.
She is on the Board of Directors at Fingoal, Inc. and NioCorp Developments Ltd. Ms. Guerrero-Mahon was previously employed as an Independent Director by NioCorp Developments Ltd. /Old/, a Vice Chairman by Centura Health Corp., a Vice Chairman by St. Anthony Hospital, and a Global Services Controller by Microsoft Corp.
She also served on the board at Colorado Financial Services Division.
She received her undergraduate degree from Universidad Interamericana de Puerto Rico and an MBA from Daniels College of Business.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-09-24 | 46,068 ( 0.03% ) | 193 025 $ | 2026-08-30 |
Nilsa Guerrero-Mahon active positions
| Companies | Position | Start |
|---|---|---|
| NIOCORP DEVELOPMENTS LTD. | Director/Board Member | 2017-09-27 |
Ng Mahon Business Consulting LLC
 Ng Mahon Business Consulting LLC Miscellaneous Commercial ServicesCommercial Services Provides business consulting services | Corporate Officer/Principal | 2007-12-31 |
Fingoal, Inc.
 Fingoal, Inc. Packaged SoftwareTechnology Services Provides financial computer software services | Director/Board Member | 2022-03-31 |
Former positions of Nilsa Guerrero-Mahon
| Companies | Position | End |
|---|---|---|
Colorado Financial Services Division
 Colorado Financial Services Division General GovernmentGovernment Provides financial services | Director/Board Member | 2016-12-31 |
St. Anthony Hospital
 St. Anthony Hospital Hospital/Nursing ManagementHealth Services Operates hospital | Director/Board Member | 2015-12-31 |
Centura Health Corp.
 Centura Health Corp. Hospital/Nursing ManagementHealth Services Provides healthcare services | Director/Board Member | 2015-12-31 |
| MICROSOFT CORPORATION | Corporate Officer/Principal | 2006-12-31 |
NioCorp Developments Ltd. /Old/
 NioCorp Developments Ltd. /Old/ Other Metals/MineralsNon-Energy Minerals Mines for niobium and other minerals | Director/Board Member | - |
Training of Nilsa Guerrero-Mahon
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
78
1st degree connections
10
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 10 |
|---|---|
Microsoft Corp.
 Microsoft Corp. Packaged SoftwareTechnology Services Develops, manufactures and distributes software products | Technology Services |
NioCorp Developments Ltd. /Old/
NioCorp Developments Ltd. /Old/ Other Metals/MineralsNon-Energy Minerals Mines for niobium and other minerals | Non-Energy Minerals |
Centura Health Corp.
Centura Health Corp. Hospital/Nursing ManagementHealth Services Provides healthcare services | Health Services |
Universidad Interamericana de Puerto Rico
 Universidad Interamericana de Puerto Rico Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
St. Anthony Hospital
St. Anthony Hospital Hospital/Nursing ManagementHealth Services Operates hospital | Health Services |
Daniels College of Business
 Daniels College of Business Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Ng Mahon Business Consulting LLC
Ng Mahon Business Consulting LLC Miscellaneous Commercial ServicesCommercial Services Provides business consulting services | Commercial Services |
Colorado Financial Services Division
Colorado Financial Services Division General GovernmentGovernment Provides financial services | Government |
NioCorp Developments Ltd.
 NioCorp Developments Ltd. Other Metals/MineralsNon-Energy Minerals Develops and produces niobium, scandium & titanium | Non-Energy Minerals |
Fingoal, Inc.
Fingoal, Inc. Packaged SoftwareTechnology Services Provides financial computer software services | Technology Services |
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