Eira Thomas

Eira Thomas

Chief Executive Officer at NORTH ARROW MINERALS INC.

Net worth: 3 M $ as of 2026-05-30

57 year
Non-Energy Minerals
Energy Minerals
Commercial Services

Profile

Eira Margaret Thomas founded Stornoway Diamond Corp.
in 1986, where she worked as Chief Executive Officer in 2011, Stornoway Ventures Ltd. in 1970, where she worked as Chief Executive Officer, Lucara Diamond Corp.
in 2007, where she worked as President, Chief Executive Officer & Director from 2018 to 2023, and Tectonic Metals, Inc. in 2026, where she is working as Chairman from 2026.
Ms. Thomas also founded Clara Diamond Solutions LP.
Ms. Thomas also currently works at North Arrow Minerals, Inc., as Chief Executive Officer & Director from 2026, Westhaven Gold Corp., as Chairman from 2024, Province of Northwest Territories, as Director, Prospectors & Developers Association of Canada, as Director, University of Toronto Alumni Association, as Director, Anglo Celtic Exploration Ltd., as Director, and Natural Diamond Council Ltd., as Director.
Ms. Thomas also formerly worked at Kaminak Gold Corp., as President, Chief Executive Officer & Director from 2013 to 2025, International Uranium Corp., as Director from 2005 to 2006, Suncor Energy, Inc., as Director from 2006 to 2009, Aber Diamond Corp., as Director & Vice President-Exploration from 1998 to 2006, Ashton Mining of Canada, Inc., as Director, Lundin Gold, Inc., as Director from 2009 to 2012, DPM Metals, Inc., as Independent Director from 2012 to 2014, Cornish Metals, Inc., as Director from 2004 to 2013, Suncor Energy Products, Inc., as Director, NWT & Nunavut Chamber of Mines, as Director, Suncor Energy, Inc., as Independent Director from 2011 to 2023, Aber Resources Ltd., as Vice President-Exploration from 1992 to 1999, Navigator Exploration Corp., as President from 2000 to 2004, Dominion Diamond Mines ULC, as Vice President, and Dominion Diamond Corp., as Vice President.
Ms. Thomas received her undergraduate degree in 1990 from the University of Toronto.

Known holdings in public companies

CompanyDateNumber of sharesValuationValuation date
2026-03-02 756,428 ( 0.83% ) 1 M $ 2026-05-30
2026-02-03 3,334,094 ( 1.29% ) 810 185 $ 2026-05-30
2026-06-02 2,010,722 ( 4.37% ) 490 616 $ 2026-05-30

Eira Thomas active positions

CompaniesPositionStart
WESTHAVEN GOLD CORP. Chairman 2024-01-23
NORTH ARROW MINERALS INC. Chief Executive Officer 2025-04-30
TECTONIC METALS INC. Founder -
Director/Board Member -
Director/Board Member -
Director/Board Member 2010-10-18
University of Toronto Alumni Association
Director/Board Member -
Director/Board Member -

Former positions of Eira Thomas

CompaniesPositionEnd
SUNCOR ENERGY INC. Director/Board Member 2023-08-31
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See the detail of Eira Thomas's experience

Training of Eira Thomas

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

Connections

76

1st degree connections

28

1st degree companies

Male

Female

Members of the board

Executives

Linked companies

Private companies28

Non-Energy Minerals

Energy Minerals

Energy Minerals

Aber Resources Ltd.

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

Energy Minerals

Consumer Services

Government

Non-Energy Minerals

Commercial Services

University of Toronto Alumni Association

Energy Minerals

Non-Energy Minerals

Distribution Services

Non-Energy Minerals

Commercial Services

Non-Energy Minerals

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