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SyCip Salazar Hernandez & Gatmaitan

Work +63 2 982 3700
Fax +63 2 817 3896
Cebu, Davao, Manila, Subic Bay Freeport Zone

Hector de Leon

Work +63 2 9823500
SyCip Salazar Hernandez & Gatmaitan

Work Department

Corporate Services; Banking, Finance and Securities; Special Projects; Tax.


Hector M. de Leon, Jr. handles corporate work (particularly mergers and acquisitions, foreign investments, project finance and similar commercial transactions).

While he handles commercial transactions for various types of industries, a significant amount of his work relates to mining, oil and gas, and energy work.

In the field of natural resource law, he has acted as counsel to the world’s biggest natural resource companies as well as junior companies, financial institutions and other participants in the natural resource sector. He has done work relating to, among others, the Didipio gold and copper project, the Far Southeast gold project, the Kingking gold and copper project, the Masbate gold project, the Rapu-rapu poly-metallic project and the Siana gold project. He provides advice to clients on all aspects of mining projects, including project structuring, joint ventures, acquisitions, corporate and project financing, legal due diligence review, land acquisition, and permitting. He also assists clients in the drafting and review of contracts entered into by mining companies, including ore supply agreements, EPC contracts, operating agreements, royalty agreements, and similar agreements.

In the field of oil and gas law, he has acted as counsel to various oil and gas companies, including global leaders in oil and gas exploration and development. He provides advice to clients on all aspects of oil and gas projects, including project structuring, establishment of a presence in the Philippines, acquisition of project companies, corporate and project financing, legal due diligence review, farm-in and farm-out transactions, sale and purchase of an interest in a service contract, and drafting and review of contracts related to oil and gas projects. He also represents financial institutions who lend to oil and gas companies.

With respect to the energy sector, Mr. de Leon has done work relating to, among others, the Caliraya-Botocan-Kalayaan hydroelectric project, the Casecnan hydroelectric project, the Mahanagdong geothermal power project, the Malitbog geothermal power project and the Upper Mahiao geothermal power project. Together with other lawyers of the firm, Mr. de Leon worked on some of the biggest transactions in the Philippine energy sector, such as the following:

  • the acquisition by Sumitomo Corporation and Japan Power in 2005 of an interest in CBK Power Company Limited. This transaction was awarded 2005 Deal-of-the-Year by the international publication Asian-Counsel and was shortlisted for Deal-of-the-Year by the International Financial Law Review;
  • the acquisition by Marubeni Corporation and Tokyo Electric Power in 2007 of the Philippine assets of Mirant through a share purchase transaction. At that time, the transaction was one of the biggest sale and purchase transactions in the Philippines. The transaction was named as one of Asian-Counsel's 2007 Deal of the Year.
Mr. de Leon also advises on a wide array of tax issues, including those relating to transaction structuring, joint ventures, acquisitions, financing, and tax treaty relief applications.

Mr. de Leon also sits as director and corporate secretary in several Philippine companies.


Chambers Global Guide 2012 named Mr. de Leon as one of the leading lawyers in the Philippines in the field of energy and natural resources. Chambers Global Guide 2007 has also named him as one of the leading lawyers in the Philippines in the field of general business law.

He is mentioned in The Legal 500: Asia Pacific Guide to Asia’s Commercial Law Firms (2007, 2008, 2009, 2010, 2011 and 2012) and in Chambers Asia’s Leading Lawyers for Business (2009, 2010, 2011 and 2012).

Mr. de Leon was a lecturer at the University of the Philippines College of Law for several years, and prior to that, he taught at the University of the Philippines College of Business Administration. He also worked as legal officer at the United Nations Compensation Commission in Geneva, Switzerland.

He co-authored the Corporation Code of the Philippines Annotated, Comments and Cases on Obligations and Contracts, and Comments and Cases on Credit Transactions. He also contributed the Philippine chapters of several international publications, including Digest of Commercial Laws of the World, CCH Doing Business in Asia, Getting the Deal Through - Mining, Remedies for International Seller of Goods, Product Liability in the Asia Pacific, and Warranties and Disclaimers: Limitations of Liability in Consumer-Related Transactions.


English, Filipino.


He is a member of the Integrated Bar of the Philippines, Inter-Pacific Bar Association, and Tax Management Association of the Philippines.


Mr. de Leon obtained his Bachelor of Arts (1984, cum laude) and Bachelor of Laws (1988) from the University of the Philippines. He was admitted to the Philippine Bar in 1989.

He received his Master of Laws (1993) from the University of Michigan.


Projects and energy

Within: Leading individuals

Hector De Leon - SyCip Salazar Hernandez & Gatmaitan

Within: Projects and energy

SyCip Salazar Hernandez & Gatmaitan  advises clients in the energy, oil and gas, telecoms, water and construction sectors. The firm recently acted for PNB Capital & Investment, BPI Capital and China Bank Capital Corporation on the $880m project financing of several power plants. Other clients include Metro Pacific Group, PLDT, San Miguel and Aboitiz Power. Rocky Reyes and Angel Salita, Jr head the team with support from Hector De Leon. John Paul De Leon was promoted to partner.

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Legal Developments by:
SyCip Salazar Hernandez & Gatmaitan

  • Philippine Chapter of Getting the Deal Through: Labour & Employment 2018

    Getting the Deal Through has published the 13 th edition of Labour & Employment, which is available in print, as an e-book, and online. The  Philippine chapter  was contributed by SyCipLaw partner Ronald Mark C. Lleno , with support from senior associate Emmar Benjoe B. Panahon and associate Hans Cedric I. Santos .
    - SyCip Salazar Hernandez & Gatmaitan

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