John Stubna - Email & Phone Number

General Manager at Cleveland Cliffs

John Stubna is based out of Pittsburgh, Pennsylvania, United States and works at Cleveland Cliffs as General Manager.

John Stubna's Contact Information

John Stubna's Work email

j*****@clf***.uk

Valid

Latest update

October 29, 2025

Location

Pittsburgh, Pennsylvania, United States

John's current employer

Cleveland Cliffs

Description

Cleveland-Cliffs is North America’s largest flat-rolled steel producer and supplier of iron ore pellets serving various industries, mainl...

Website

clevelandcliffs.com

HQ Location

Cleveland, Ohio, United States

Number of employees

10001+

Industry

Manufacturing

Latest update

May 1, 2024

Read about Cleveland Cliffs

Frequent questions about John Stubna

What company is John Stubna working for?

John Stubna works for Cleveland Cliffs.

What is John Stubna's function at Cleveland Cliffs?

John Stubna is General Manager at Cleveland Cliffs.

Where is John Stubna based?

John Stubna is based out of Pittsburgh, Pennsylvania, United States.

What is John Stubna's work email address?

John Stubna's professional email address is j*****@clf***.uk

Who are John Stubna's co-workers?

John Stubna's colleagues are Jean MULLER, Donald Gallagher, Keith Koci, Clifford Smith, Lourenco Goncalves, Bryan Fleeger, Brandon McKinney, Alexander Wigal, David Smith, Larry Oar, Allen Pettis, Sonya Keylon, Tim Vincent, James Sumner, Amy Fisher, Kelly Gaydosh, Matt Coyle, Sylvia Loo, Ruben Santos, Zechariah Wickliffe, Duke Vetor, Patrick Bloom, Anton Shkurenko, James Graham, Austin Boyd, Craig Tuttle, Nicolas Navarro, Duy Khau, Daniel Morford, Kirk Ward, James Pierson, Harrison Moenster, Jesse Gielen, William. Kane, Kendall Kilgore, Michael DeSapri.

John's co-workers

Jean MULLER

Vice-President of Cleveland-Cliffs, Burns Harbor Plant General Manager

Donald Gallagher

President-North American Business Unit

Keith Koci

Executive Vice President and President, Cleveland Cliffs Services

Clifford Smith

EVP & President Cleveland-Cliffs Steel

Lourenco Goncalves

Chief Executive Officer

Bryan Fleeger

Union Safety Chairman

Brandon McKinney

Process Coordinator Maintenance

Alexander Wigal

Process Coordinator Operations Engineer

David Smith

Health Safety Environment Coordinator

Larry Oar

Maintenance Technician Electrical - USW Local 1011 Benefits Coordinator

Allen Pettis

Safety Coordinator

Sonya Keylon

Environmental Coordinator

Tim Vincent

Safety, Quality, Environmental Coordinator

James Sumner

Quality Coordinator

Amy Fisher

Supply Chain Coordinator

Kelly Gaydosh

Administrative Assistant to the Vice President & General Manager

Matt Coyle

Maintenance Process Coordinator

Sylvia Loo

Lead Process Coordinator

Ruben Santos

Service Coordinator

Zechariah Wickliffe

Raw Material Coordinator

Duke Vetor

SVP - Global Operations Services

Patrick Bloom

Vice President, Government Relations

Anton Shkurenko

Process Coordinator Operations

James Graham

Executive Vice President, Human Resources, Chief Legal and Administrative Officer & Secretary

Austin Boyd

Associate Engineer Co-op: Electrical Maintenance

Craig Tuttle

Melt shop coordinator

Nicolas Navarro

Production Planning Co-op

Duy Khau

Process Engineer COOP

Daniel Morford

Process Coordinator

Kirk Ward

Fabrication/Weld Shop Coordinator

James Pierson

Shift Manager - Safety Coordinator- Maintenance Manager

Harrison Moenster

Central Parts Storage Process Coordinator

Jesse Gielen

Process Control Systems Coordinator

Vice President Internal Audit

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