Management Team

John Gellert
President & Chief Executive Officer

John Gellert
President, Chief Executive Officer and Director

John Gellert is Chief Executive Officer and President of SEACOR Marine Holdings Inc. and a member of the company’s board of directors. Previously, he served as the Co-Chief Operating Officer of SEACOR Holdings Inc. in 2015, before being appointed CEO and President in 2017.

Mr. Gellert has had a long career with SEACOR, where he started as a financial and market analyst after graduating from college. Since June 1992, when Mr. Gellert joined SEACOR Holdings, until July 2005, he held various financial, analytical, chartering and marketing roles within SEACOR Holdings. Following the acquisition of offshore assets from Compagnie Nationale de Navigation in 1995, over the next five years, he had a series of international appointments with both marketing and operating responsibilities in Europe, West Africa, and Southeast Asia. From 2000 to 2004, Mr. Gellert served as a Vice President in charge of worldwide chartering. From May 2004 to February 2015, he was Senior Vice President of SEACOR Holdings Inc. In July 2005, Mr. Gellert was appointed President of SEACOR Holdings Inc.’s Offshore Marine Services segment, a capacity in which he served until his current appointment.

Mr. Gellert is an officer and director of certain company subsidiaries. Mr. Gellert serves as Vice Chairman of the Board at National Ocean Industries Association and as Member of Executive Council at Cohesive Capital Management, L.P. Mr. Gellert graduated from Harvard College.

Jesús Llorca
Executive Vice President & Chief Financial Officer

Jesús Llorca
Executive Vice President and Chief Financial Officer

As Executive Vice President and Chief Financial Officer of SEACOR Marine since April 2018, Jesús Llorca brings over 17 years of industry experience and critical knowledge of the company’s operations, finances and strategies to his role. Previously, he served as the company’s Executive Vice President of Corporate Development since June 1, 2017. Mr. Llorca also held the position of Vice President of SEACOR Holdings Inc. from May 2007 to May 2017.

From 2004 to 2007, Mr. Llorca worked in the corporate group of SEACOR Holdings assisting the General Counsel. From 2000 to 2004, he held the position of Manager at Nabors Drilling. Mr. Llorca graduated from ICAD with degrees in business and law.

Gregory Rossmiller
Senior Vice President & Chief Accounting Officer

Gregory S. Rossmiller
Senior Vice President and Chief Accounting Officer

In a career that spans over 20 years, Gregory Rossmiller joined SEACOR Marine as Senior Vice President and Chief Accounting Officer on April 17, 2018. Previously, he held the position of Chief Financial Officer, North America, for Applus Energy and Industry, a division of Applus Services S.A., since June 2009. From 2005 to 2009, Mr. Rossmiller was Corporate Controller of Pride International, one of the world’s largest drilling contractors, providing onshore and offshore drilling, workover and related services in more than 20 countries.

From 2000 to 2005, Mr. Rossmiller was Controller of Nabors Drilling International Limited, a subsidiary of Nabors Industries, Ltd. He also held the position of Assistant Controller from 1997 to 2000 at the same company. Prior to that, he held audit positions with Cooper Industries and with the accounting firm of Deloitte & Touche. Mr. Rossmiller attended Harvard Business School.

Tim Clerc
Vice President of Engineering

Tim Clerc
Vice President of Engineering

As Vice President of Engineering at SEACOR Marine, Tim Clerc is responsible for the conception, design and technical appraisal for SEACOR Marine’s offshore fleet new constructions both in the U.S. and Overseas. Additionally, he is responsible for new construction supervision, major conversions, approval and acceptance of the completed vessels. Together with his team, Mr. Clerc was recently responsible for delivering the first Hybrid Platform Support Vessels both in Asia and the Americas.

Mr. Clerc has been directly involved in the Marine Industry since 1969, first as an Engineering Officer Cadet and subsequently rising to the rank of Chief Engineer in the British Merchant Navy serving on many types of vessels. Having transferred from his seagoing duties in the early 1990s, Mr. Clerc was responsible for Project Management, Technical Superintendency and latterly as New Construction Manager for projects both in Norway and Japan before joining SEACOR Marine in 2000.

Mr. Clerc was educated at HMS Conway, Riversdale College of Technology and South Shields Marine and Technical School where he gained the Department of Trade First Class Certificate of Competency. He is a Member of the Institute of Marine Engineering, Science and Technology, an Incorporated Marine Engineer and an Incorporated Engineer registered with the Engineering Council. In addition, Mr. Clerc is a Member of the American Bureau of Shipping also sitting on various ABS Technical committees including Marine Technical Committee, the Special Committee on Ship Operations, and the Special Committee on Small Vessels.

John Gellert
President, Chief Executive Officer and Director

John Gellert is Chief Executive Officer and President of SEACOR Marine Holdings Inc. and a member of the company’s board of directors. Previously, he served as the Co-Chief Operating Officer of SEACOR Holdings Inc. in 2015, before being appointed CEO and President in 2017.

Mr. Gellert has had a long career with SEACOR, where he started as a financial and market analyst after graduating from college. Since June 1992, when Mr. Gellert joined SEACOR Holdings, until July 2005, he held various financial, analytical, chartering and marketing roles within SEACOR Holdings. Following the acquisition of offshore assets from Compagnie Nationale de Navigation in 1995, over the next five years, he had a series of international appointments with both marketing and operating responsibilities in Europe, West Africa, and Southeast Asia. From 2000 to 2004, Mr. Gellert served as a Vice President in charge of worldwide chartering. From May 2004 to February 2015, he was Senior Vice President of SEACOR Holdings Inc. In July 2005, Mr. Gellert was appointed President of SEACOR Holdings Inc.’s Offshore Marine Services segment, a capacity in which he served until his current appointment.

Mr. Gellert is an officer and director of certain company subsidiaries. Mr. Gellert serves as Vice Chairman of the Board at National Ocean Industries Association and as Member of Executive Council at Cohesive Capital Management, L.P. Mr. Gellert graduated from Harvard College.

Jesús Llorca
Executive Vice President and Chief Financial Officer

As Executive Vice President and Chief Financial Officer of SEACOR Marine since April 2018, Jesús Llorca brings over 17 years of industry experience and critical knowledge of the company’s operations, finances and strategies to his role. Previously, he served as the company’s Executive Vice President of Corporate Development since June 1, 2017. Mr. Llorca also held the position of Vice President of SEACOR Holdings Inc. from May 2007 to May 2017.

From 2004 to 2007, Mr. Llorca worked in the corporate group of SEACOR Holdings assisting the General Counsel. From 2000 to 2004, he held the position of Manager at Nabors Drilling. Mr. Llorca graduated from ICAD with degrees in business and law.

Gregory S. Rossmiller
Senior Vice President and Chief Accounting Officer

In a career that spans over 20 years, Gregory Rossmiller joined SEACOR Marine as Senior Vice President and Chief Accounting Officer on April 17, 2018. Previously, he held the position of Chief Financial Officer, North America, for Applus Energy and Industry, a division of Applus Services S.A., since June 2009. From 2005 to 2009, Mr. Rossmiller was Corporate Controller of Pride International, one of the world’s largest drilling contractors, providing onshore and offshore drilling, workover and related services in more than 20 countries.

From 2000 to 2005, Mr. Rossmiller was Controller of Nabors Drilling International Limited, a subsidiary of Nabors Industries, Ltd. He also held the position of Assistant Controller from 1997 to 2000 at the same company. Prior to that, he held audit positions with Cooper Industries and with the accounting firm of Deloitte & Touche. Mr. Rossmiller attended Harvard Business School.

Tim Clerc
Vice President of Engineering

As Vice President of Engineering at SEACOR Marine, Tim Clerc is responsible for the conception, design and technical appraisal for SEACOR Marine’s offshore fleet new constructions both in the U.S. and Overseas. Additionally, he is responsible for new construction supervision, major conversions, approval and acceptance of the completed vessels. Together with his team, Mr. Clerc was recently responsible for delivering the first Hybrid Platform Support Vessels both in Asia and the Americas.

Mr. Clerc has been directly involved in the Marine Industry since 1969, first as an Engineering Officer Cadet and subsequently rising to the rank of Chief Engineer in the British Merchant Navy serving on many types of vessels. Having transferred from his seagoing duties in the early 1990s, Mr. Clerc was responsible for Project Management, Technical Superintendency and latterly as New Construction Manager for projects both in Norway and Japan before joining SEACOR Marine in 2000.

Mr. Clerc was educated at HMS Conway, Riversdale College of Technology and South Shields Marine and Technical School where he gained the Department of Trade First Class Certificate of Competency. He is a Member of the Institute of Marine Engineering, Science and Technology, an Incorporated Marine Engineer and an Incorporated Engineer registered with the Engineering Council. In addition, Mr. Clerc is a Member of the American Bureau of Shipping also sitting on various ABS Technical committees including Marine Technical Committee, the Special Committee on Ship Operations, and the Special Committee on Small Vessels.

Andrew H. Everett II
Senior Vice President, General Counsel and Secretary

Andrew H. Everett II
Senior Vice President, General Counsel and Secretary

Andrew Everett is Senior Vice President, General Counsel and Secretary of SEACOR Marine, a position he has held since joining the company on January 22, 2018. Prior to working at SEACOR Marine, Mr. Everett was an associate in the Global Corporate Group of Milbank, Tweed, Hadley & McCloy LLP from 2008 until 2018. Mr. Everett received his J.D. from Boston College Law School and B.S. from Bentley University.

Anthony Weller
Senior Vice President and Managing Director

Anthony Weller
Senior Vice President and Managing Director

Based in Dubai, UAE, Anthony (Tony) Weller is Senior Vice President and Managing Director of SEACOR Marine’s International Division responsible for the Mediterranean, Africa, Middle East and Asia / Pacific regions. Previously, Mr. Weller held the positions of VP of Marketing and COO for the International Division. At predecessor companies Mr. Weller held various Commercial roles including Marketing, Chartering, Sale & Purchase, and negotiating partner JV agreements, as well as having Shipbroking experience. With over 40 years of shipping and industry experience Mr. Weller first joined SEACOR Marine in 2005. He is a Master Mariner and received his B.Sc., Nautical Studies from the University of Southampton. He is also a member of various industry committees in the Middle East.

Andrew H. Everett II
Senior Vice President, General Counsel and Secretary

Andrew Everett is Senior Vice President, General Counsel and Secretary of SEACOR Marine, a position he has held since joining the company on January 22, 2018. Prior to working at SEACOR Marine, Mr. Everett was an associate in the Global Corporate Group of Milbank, Tweed, Hadley & McCloy LLP from 2008 until 2018. Mr. Everett received his J.D. from Boston College Law School and B.S. from Bentley University.

Anthony Weller
Senior Vice President and Managing Director

Based in Dubai, UAE, Anthony (Tony) Weller is Senior Vice President and Managing Director of SEACOR Marine’s International Division responsible for the Mediterranean, Africa, Middle East and Asia / Pacific regions. Previously, Mr. Weller held the positions of VP of Marketing and COO for the International Division. At predecessor companies Mr. Weller held various Commercial roles including Marketing, Chartering, Sale & Purchase, and negotiating partner JV agreements, as well as having Shipbroking experience. With over 40 years of shipping and industry experience Mr. Weller first joined SEACOR Marine in 2005. He is a Master Mariner and received his B.Sc., Nautical Studies from the University of Southampton. He is also a member of various industry committees in the Middle East.