David Mullen

David Mullen

Chief Executive Officer at SHELF DRILLING (NORTH SEA), LTD.

Net worth: 462 583 $ as of 2026-03-30

68 year
Industrial Services
Consumer Services
Transportation

Profile

Mr. David J.
Mullen
is a Senior Independent Director at Subsea 7 SA (Luxembourg), a Senior Independent Director at Subsea 7 SA, a Chairman & Chief Executive Officer at Shelf Drilling (North Sea) Ltd., an Executive Chairman at Shelf Drilling Ltd., a Chief Executive Officer at Shelf Drilling Holdings Ltd., a Chief Executive Officer at Shelf Drilling International Holdings Ltd. and a MD & Director-Geco Prakla Personnel Unit at Schlumberger Nigeria Ltd. He is on the Board of Directors at Subsea 7 SA (Luxembourg) and Subsea 7 SA. Mr. Mullen was previously employed as a Chief Executive Officer by Wellstream Holdings Plc, a Chief Executive Officer by Ocean Rig ASA, a Senior VP-Global Marketing & Business Development by Transocean, Inc. /Old/, a President-South & North America by Schlumberger Oilfield Services, Inc., a Principal by Schlumberger Ltd., and a SVP-Global Marketing & Business Development by Transocean Ltd. He also served on the board at Sea1 Offshore, Inc. He received his undergraduate degree from Trinity College Dublin and a graduate degree from National University of Ireland.

Known holdings in public companies

CompanyDateNumber of sharesValuationValuation date
2025-12-30 15,000 ( 0.01% ) 462 583 $ 2026-03-30

David Mullen active positions

CompaniesPositionStart
SHELF DRILLING, LTD. Chairman 2024-08-15
SUBSEA 7 S.A. Director/Board Member 2018-04-16
SHELF DRILLING (NORTH SEA), LTD. Chief Executive Officer 2022-10-05
Chief Executive Officer -
Chief Executive Officer -
Chief Executive Officer -
Director/Board Member 2020-12-31

Former positions of David Mullen

CompaniesPositionEnd
Chief Executive Officer 2011-03-31
Chief Executive Officer 2010-08-06
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See the detail of David Mullen's experience

Training of David Mullen

Experiences
Positions held

Active

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Listed companies

Private companies

Connections

76

1st degree connections

16

1st degree companies

Male

Female

Members of the board

Executives

Linked companies

Private companies16

Industrial Services

Industrial Services

Industrial Services

Industrial Services

Industrial Services

Industrial Services

Industrial Services

Consumer Services

Consumer Services

Transportation

Technology Services

Industrial Services

Industrial Services

Industrial Services

Industrial Services

Industrial Services