Catherine Flax-Kosecki

Catherine Flax-Kosecki

Chief Executive Officer at ZEFIRO METHANE CORP.

Net worth: 10 M $ as of 2026-05-30

62 year
Commercial Services
Finance
Technology Services

Profile

Catherine Flax-Kosecki is Chief Executive Officer & Director at Zefiro Methane Corp.
starting in 2025, Chairman at Base Carbon, Inc. since 2022, Managing Director at CRA, Inc. since 2019, Director at ISO New England, Inc., Director at Amperon Holdings, Inc. since 2022, Independent Non-Executive Director at Abaxx Technologies, Inc. since 2020, Member of the Aggies Wall Street Program at Texas A&M University, and Trustee at Holy Family Church.
Former roles include Chief Executive Officer at Pefin Advisors LLC from 2016 to 2018, Director at Securities Industry & Financial Markets Association, Inc., Director at Digital Asset Holdings LLC, Director & Chief Marketing Officer at JPMorgan Securities Plc from 2011 to 2013, MD & Head-Americas Regional Commodity Derivatives at BNP Paribas Corporate & Investment Banking from 2013 to 2016, President-Private Investing at X Machina Capital Strategies LP from 2021 to 2025, and Head-Foreign Exchange & Local Markets at BNP Paribas (New York Branch) from 2013 to 2017.
Education includes graduate studies at Brown University and undergraduate studies at Texas A&M University.

Known holdings in public companies

CompanyDateNumber of sharesValuationValuation date
2026-06-09 148,548 ( 0.41% ) 6 M $ 2026-05-30
2026-04-19 7,052,198 ( 7.78% ) 4 M $ 2026-05-30
2025-05-08 425,099 ( 0.42% ) 253 359 $ 2026-05-30

Catherine Flax-Kosecki active positions

CompaniesPositionStart
ABAXX TECHNOLOGIES INC. Director/Board Member 2020-12-13
BASE CARBON INC. Chairman -
ZEFIRO METHANE CORP. Chief Executive Officer 2025-06-04
Holy Family Church
Director/Board Member -
Director/Board Member 2022-08-09
Director/Board Member -
Corporate Officer/Principal 2019-03-31
Corporate Officer/Principal -

Former positions of Catherine Flax-Kosecki

CompaniesPositionEnd
Corporate Officer/Principal 2025-05-31
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Pefin Advisors LLC

Technology Services

Technology Services

Finance

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Holy Family Church

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