Derek Meisner

Chief Operating Officer at GREENFIRE RESOURCES LTD.

Net worth: 452 397 $ as of 2026-05-30

55 year

7 connections

Health Technology

Finance

Consumer Services

Profile

Derek M.
Meisner is Secretary & Chief Legal Officer at Acumen Pharmaceuticals, Inc. since 2022.
Mr. Meisner is Vice President-Operations at Greenfire Resources Ltd. starting in 2026.
Former positions include General Counsel at RA Capital Management LP, Partner at K&L Gates LLP, General Counsel at Quantopian, Inc. from 2016 to 2018, Principal at the US Securities & Exchange Commission, General Counsel at Genocea Biosciences, Inc. from 2018 to 2019, and Secretary & Chief Legal Officer at X4 Pharmaceuticals, Inc. from 2019 to 2022.
Education includes undergraduate studies at the University of Michigan and graduate studies at American University Washington College of Law.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
ACUMEN PHARMACEUTICALS, INC. 0.24%	2026-03-05	173,999 ( 0.24% )	452 397 $	2026-05-30

Derek Meisner active positions

Companies	Position	Start
ACUMEN PHARMACEUTICALS, INC.	General Counsel	2022-07-31
GREENFIRE RESOURCES LTD.	Chief Operating Officer	2026-03-11

All active positions of Derek Meisner

Former positions of Derek Meisner

Companies	Position	End
X4 PHARMACEUTICALS, INC.	General Counsel	2022-08-21
GENOCEA BIOSCIENCES, INC.	General Counsel	2019-10-31
Quantopian, Inc. Quantopian, Inc. Internet Software/ServicesTechnology Services Operates as an online crowdsourced algorithmic trading platform that enables users to develop, test and license trading strategies	General Counsel	2017-12-31
US Securities & Exchange Commission US Securities & Exchange Commission Investment Banks/BrokersFinance Provides securities and commission services	Corporate Officer/Principal	-
RA Capital Management LP RA Capital Management LP Investment ManagersFinance RA Capital is a multi-stage investment manager that focuses evidence-based investing in public and private healthcare and life science companies which develops drugs, medical devices, diagnostics, services, and research tools. The firm’s portfolio of private and public companies spans the globe and most therapeutic areas across all stages from discovery through commercialization.	General Counsel	-

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Linked companies

Private companies	10
Acumen Pharmaceuticals, Inc. Acumen Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Discovers and develops medicines and diagnostics for Alzheimer's disease	Health Technology
RA Capital Management LP RA Capital Management LP Investment ManagersFinance RA Capital is a multi-stage investment manager that focuses evidence-based investing in public and private healthcare and life science companies which develops drugs, medical devices, diagnostics, services, and research tools. The firm’s portfolio of private and public companies spans the globe and most therapeutic areas across all stages from discovery through commercialization.	Finance
Genocea Biosciences, Inc. Genocea Biosciences, Inc. BiotechnologyHealth Technology Operates as clinical stage biotechnology company that discovers and develops novel cancer immunotherapies	Health Technology
University of Michigan University of Michigan Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
US Securities & Exchange Commission US Securities & Exchange Commission Investment Banks/BrokersFinance Provides securities and commission services	Finance
K&L Gates LLP K&L Gates LLP Miscellaneous Commercial ServicesCommercial Services Provides legal services	Commercial Services
Quantopian, Inc. Quantopian, Inc. Internet Software/ServicesTechnology Services Operates as an online crowdsourced algorithmic trading platform that enables users to develop, test and license trading strategies	Technology Services
American University Washington College of Law American University Washington College of Law Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
X4 Pharmaceuticals, Inc. X4 Pharmaceuticals, Inc. BiotechnologyHealth Technology Operates as a biotechnology company which engages in developing human antibodies for treating infectious diseases	Health Technology
Greenfire Resources Ltd. Greenfire Resources Ltd. Integrated OilEnergy Minerals Explores, acquires, develops and produces oil and gas	Energy Minerals