Nilsa Guerrero-Mahon

Director/Board Member at NIOCORP DEVELOPMENTS LTD.

Net worth: 222 048 $ as of 2026-06-29

65 year

94 connections

Technology Services

Non-Energy Minerals

Health Services

Profile

Nilsa Guerrero-Mahon is currently an Independent Director at NioCorp Developments Ltd. since 2017, a Director at Fingoal, Inc. since 2022, and Principal at Ng Mahon Business Consulting LLC since 2008.
Former positions include Vice Chairman at Centura Health Corp.
and St. Anthony Hospital from 2014 to 2016, Director at Colorado Financial Services Division from 2009 to 2017, and Global Services Controller at Microsoft Corp.
from 2005 to 2007.
Education includes undergraduate studies at 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
NIOCORP DEVELOPMENTS LTD. 0.03%	2026-03-26	46,068 ( 0.03% )	222 048 $	2026-06-29

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

All active positions of Nilsa Guerrero-Mahon

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	-

See the detail of Nilsa Guerrero-Mahon's experience

Training of Nilsa Guerrero-Mahon

Experiences
Positions held

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Private companies

See the detail of Nilsa Guerrero-Mahon's experience

Connections

1st degree connections

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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