Michael Lefenfeld
Chief Executive Officer at Cyanco International LLC
Net worth: 581 052 $ as of 2024-04-29
Profile
Michael Lefenfeld is the founder.
He founded Signa Chemistry in 2007 and served as the President, Chief Executive Officer & Director until 2018.
Currently, Mr. Lefenfeld holds the position of President & Chief Executive Officer at Hexion, Inc. He is also the President, CEO, COO & Director at Cyanco Holding Corp.
In addition, he is the President, Chief Executive Officer & Director at Cyanco International LLC and President & Director at Cyanco Corp.
Mr. Lefenfeld is also a Director at Just Another Acquisition Corp., Rocket Global Acquisition Corp., and Hydrobuilder Holdings LLC.
In his former positions, Mr. Lefenfeld served as an Independent Director at Immunome, Inc. from 2017 to 2023.
He also worked as an Entrepreneur-in-Residence at Great Oaks Venture Capital BZ LLC.
Mr. Lefenfeld completed his undergraduate studies at Washington University in St. Louis.
He furthered his education with a graduate degree from The Trustees of Columbia University in The City of New York.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
IMMUNOME, INC.
0.07% | 2023-06-07 | 40,747 ( 0.07% ) | 581 052 $ | 2024-04-29 |
Michael Lefenfeld active positions
| Companies | Position | Start |
|---|---|---|
Cyanco International LLC
 Cyanco International LLC Chemicals: SpecialtyProcess Industries Cyanco International LLC engages in mining solid sodium cyanide. The company is headquartered in Pearland, TX. | Chief Executive Officer | 2018-02-28 |
Cyanco Corp.
 Cyanco Corp. Industrial SpecialtiesProcess Industries Cyanco Corp. supplies commercial mining explosives. It offers liquid and solid sodium cyanide. The firm offers its products to gold mines. The company was founded in 1988 and is headquartered in Reno, NV. | President | 2018-08-31 |
Rocket Global Acquisition Corp.
 Rocket Global Acquisition Corp. Financial ConglomeratesFinance Rocket Global Acquisition Corp. operates as a blank check company. The firm was formed for the purpose of entering into a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses. The company was incorporated on February 9, 2021 and is headquartered in New York, NY. | Director/Board Member | - |
Just Another Acquisition Corp.
 Just Another Acquisition Corp. Financial ConglomeratesFinance Just Another Acquisition Corp. operates as a blank check company. It was formed for the purpose of entering into a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses. The company is headquartered in New York, NY. | Director/Board Member | - |
Hydrobuilder Holdings LLC
 Hydrobuilder Holdings LLC Internet Software/ServicesTechnology Services Hydrobuilder Holdings LLC is a leading omnichannel platform in the hydroponics, CEA, and specialty agriculture industry. The private company is based in the United States, with a retail footprint in four states and commercial warehouse direct capabilities in 17 states. The American company serves a wide range of customers, from hobbyists to large commercial growers, through its online, retail, and warehouse direct channels. These companies include Greencoast, Hydrobuilder.com, Elevated Equipment and Supply, and Way to Grow. Hydrobuilder Holdings was founded in October 2020 and has acquired four market-leading companies across different sales channels and geographies. The CEO of Hydrobuilder Holdings is Markus Alan Hockenson. | Director/Board Member | - |
Cyanco Holding Corp.
 Cyanco Holding Corp. Chemicals: SpecialtyProcess Industries Cyanco Holding Corp. supplies products to the mining industries. The company was founded in 2008 and is headquartered in Reno, NV. | Chief Executive Officer | - |
Hexion, Inc.
 Hexion, Inc. Industrial SpecialtiesProcess Industries Hexion, Inc. engages in the manufacture of thermoset resins. Its products are used in several applications including abrasives, adhesives, chemical intermediates, civil engineering, coatings, composites, crop protection, electrical/electronics, engineered wood, fertilizers and pesticides, fibers and textiles, foams, friction materials, furniture, molding compounds, oilfield, oriented strand board, particleboard and fiberboard, plywood, and laminated veneer lumber, and refractories. The company was founded in 1899 and is headquartered in Columbus, OH. | Chief Executive Officer | - |
Former positions of Michael Lefenfeld
| Companies | Position | End |
|---|---|---|
| IMMUNOME, INC. | Director/Board Member | 2023-10-01 |
Signa Chemistry
 Signa Chemistry Metal FabricationProducer Manufacturing Signa Chemistry develops stabilized reactive metals. | Founder | 2018-08-31 |
| ░░░░░ ░░░░ ░░░░░░░ ░░░░░░░ ░░ ░░░ | ░░░░░░░░░ ░░░░░░░░░░░░░░░░░ | - |
Training of Michael Lefenfeld
| The Trustees of Columbia University in The City of New York | Graduate Degree |
| Washington University in St. Louis | Undergraduate Degree |
Experiences
Positions held
Connections
1st degree connections
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Listed companies | 1 |
|---|---|
| IMMUNOME, INC. | Health Technology |
| Private companies | 9 |
|---|---|
Great Oaks Venture Capital BZ LLC
 Great Oaks Venture Capital BZ LLC Investment ManagersFinance Great Oaks Venture Capital BZ LLC (Great Oaks Venture Capital) is a venture capital firm founded in 2005 by Andrew K. Boszhardt Jr. The firm is headquartered in New York. | Finance |
Cyanco International LLC
Cyanco International LLC Chemicals: SpecialtyProcess Industries Cyanco International LLC engages in mining solid sodium cyanide. The company is headquartered in Pearland, TX. | Process Industries |
Signa Chemistry
Signa Chemistry Metal FabricationProducer Manufacturing Signa Chemistry develops stabilized reactive metals. | Producer Manufacturing |
Cyanco Corp.
Cyanco Corp. Industrial SpecialtiesProcess Industries Cyanco Corp. supplies commercial mining explosives. It offers liquid and solid sodium cyanide. The firm offers its products to gold mines. The company was founded in 1988 and is headquartered in Reno, NV. | Process Industries |
Rocket Global Acquisition Corp.
Rocket Global Acquisition Corp. Financial ConglomeratesFinance Rocket Global Acquisition Corp. operates as a blank check company. The firm was formed for the purpose of entering into a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses. The company was incorporated on February 9, 2021 and is headquartered in New York, NY. | Finance |
Just Another Acquisition Corp.
Just Another Acquisition Corp. Financial ConglomeratesFinance Just Another Acquisition Corp. operates as a blank check company. It was formed for the purpose of entering into a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses. The company is headquartered in New York, NY. | Finance |
Hydrobuilder Holdings LLC
Hydrobuilder Holdings LLC Internet Software/ServicesTechnology Services Hydrobuilder Holdings LLC is a leading omnichannel platform in the hydroponics, CEA, and specialty agriculture industry. The private company is based in the United States, with a retail footprint in four states and commercial warehouse direct capabilities in 17 states. The American company serves a wide range of customers, from hobbyists to large commercial growers, through its online, retail, and warehouse direct channels. These companies include Greencoast, Hydrobuilder.com, Elevated Equipment and Supply, and Way to Grow. Hydrobuilder Holdings was founded in October 2020 and has acquired four market-leading companies across different sales channels and geographies. The CEO of Hydrobuilder Holdings is Markus Alan Hockenson. | Technology Services |
Cyanco Holding Corp.
Cyanco Holding Corp. Chemicals: SpecialtyProcess Industries Cyanco Holding Corp. supplies products to the mining industries. The company was founded in 2008 and is headquartered in Reno, NV. | Process Industries |
Hexion, Inc.
Hexion, Inc. Industrial SpecialtiesProcess Industries Hexion, Inc. engages in the manufacture of thermoset resins. Its products are used in several applications including abrasives, adhesives, chemical intermediates, civil engineering, coatings, composites, crop protection, electrical/electronics, engineered wood, fertilizers and pesticides, fibers and textiles, foams, friction materials, furniture, molding compounds, oilfield, oriented strand board, particleboard and fiberboard, plywood, and laminated veneer lumber, and refractories. The company was founded in 1899 and is headquartered in Columbus, OH. | Process Industries |
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