Mr Sergio Orrego > Urenda, Rencoret, Orrego y Dörr > Santiago, Chile > Lawyer Profile

Urenda, Rencoret, Orrego y Dörr
Sergio Orrego photo

Work Department

Corporate and M&A / Energy & Natural Resources / Mining / Projects and Infrastructure / Telecommunications.




With Urenda Rencoret (1986 – to date), partner since 1998. With Sullivan & Cromwell, New York (1991-1992). Has been ranked by Chambers and Partners, Legal 500, IFLR1000, Latin Lawyer 250, LACCA, Leaders League and Best Lawyers.


Spanish and English.


The Rocky Mountain Mineral Law Foundation; Chilean Bar Association; International Bar Association.


Master in Comparative Law (MCJ), New York University -NYU- (1991); Bachelor of Law, Universidad de Chile (1986).

Lawyer Rankings

Chile > Capital markets

Urenda, Rencoret, Orrego y Dörr‘s eight-strong team assists with both equity and debt markets, such as IPOs, bonds and public tender offers. It is also noted for its assistance to publicly held corporations, brokers and other entities, in relation to their interaction with Chile’s Securities Agency and the stock markets. Rodrigo de Alencar and Sergio Orrego are experienced in capital markets-related compliance, securities, IPOs and tender offers; and Gonzalo Rencoret and Nicholas Mocarquer provide additional partner-level support. Isidora Zañartu is a go-to associate for securities laws and regulations.

Chile > Corporate and M&A

Urenda, Rencoret, Orrego y Dörr‘s 22-member corporate and M&A department has substantial experience in M&A transactions, shareholder agreements, joint ventures and corporate restructurings; the team also provides major local and international companies with general corporate assistance on an ongoing basis. Additionally, the firm is the Chilean member firm of the Multilaw and World Law Group international networks. The practice is co-led by Gonzalo Rencoret, who recently counselled Petroquimica Dow on a high-profile merger; Nicholas Mocarquer, who handles M&A, shareholder agreements, public tender offers and joint ventures; and corporate/M&A, banking and finance and capital markets specialist, Rodrigo de Alencar. Also key to the group are experienced partners Sergio Orrego and Felipe Rencoret, while at senior associate level, Bernardita Schmidt and Rafael Rencoret are the key figures.

Chile > Environment

Urenda, Rencoret, Orrego y Dörr‘s six-strong practice fields experts in the environmental law issues surrounding mining and energy investment projects, at both initial stages and in relation to EIA approvals and sectorial environmental permits. The firm’s compliance practice additionally assists with the prevention of sanctioning processes; and on the contentious side, the group acts in administrative sanctioning and reclamation procedures before the environmental, health and water authorities, as well as before the environmental courts and the Supreme Court. Ignacio Urrutia‘s experience includes eight years spent at CONAMA, with Sergio Orrego providing additional partner-level support. Macarena García and Javiera Vicuña are key associates.

Chile > Energy and natural resources > Mining

(Leading individuals)

Sergio OrregoUrenda, Rencoret, Orrego y Dörr

Urenda, Rencoret, Orrego y Dörr‘s six-member department advises both domestic and foreign clients on mining projects from the very earliest stages, including mining title reviews, purchase options, financing, and joint venture and exploration agreements; other areas of note are royalty, streaming and easement agreements, along with water-rights’ titles, permits, reclamation actions and social permits. Heading the firm’s mining practice, Sergio Orrego focuses on mining, energy and natural resources, projects, and corporate and M&A work; he recently advised Royal Gold on the purchase of a mining project’s royalty rights. Fellow name partner Gonzalo Rencoret has broad mining practice expertise; and associate Verónica Roa‘s experience includes advising on numerous mining projects.

Chile > Energy and natural resources > Electricity and hydrocarbon

Urenda, Rencoret, Orrego y Dörr‘s six-member energy practice covers the full gamut of projects work, including risk analysis, due diligence for asset acquisitions, contracts, and strategic alliances and joint ventures; the team also assists with the environmental impacts of projects, obtaining permits, taxation, financing, corporate governance, and dispute resolution and administrative procedures. Sergio Orrego (‘excels in negotiation skills‘) regularly leads teams on major transactions, such as the creation of natural parks and innovative NCRE projects. Notable support is provided by Ignacio Urrutia (previously at CONAMA, the Government Environmental Assessment Service’s predecessor agency), and associates Javiera Vicuña and Macarena García. However, Sebastián García left in November 2020 to co-found García, Mayol, Sepúlveda, Correa Abogados.

Chile > Projects and infrastructure

With longstanding experience in project finance, the 10-member practice at Urenda, Rencoret, Orrego y Dörr advises a large number of foreign and local clients on the development and financing of projects involving power generation (particularly NCRE matters), mining, infrastructure and real estate, including contentious issues. Sergio Orrego has notable expertise in wind farms and run-of-the-river power plants; Gonzalo Errázuriz is a real estate project expert; Ignacio Urrutia is on hand for project-related environmental law aspects; and a partner since 2017, Felipe Rencoret is active in projects and infrastructure work.