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  • Litigation & IP
  • eDiscovery & Information Governance

Matthew Sebastian Senior Analytics Project Attorney Litigation & IP, eDiscovery & Information Governance

Wheeling, W.V. (GOC)

Matthew Sebastian is a Senior Analytics Team Lead in the Discovery Analytics and Review Services group at Orrick. Matthew works with litigation attorneys and third party vendors to manage the review and production of documents relevant to investigations and litigation.

The Discovery Analytics and Review Services group specializes in using technology and project management discipline to assist firm attorneys with litigation and transactional tasks, particularly tasks that involve large volumes of data and documents.

This work includes using early case assessment technology to analyze, categorize and cull data. Matthew also manages teams of specialists performing document review, redaction, analysis, production and drafting privilege logs. He assists the litigation team to prepare for trial, including drafting deposition summaries, factual memoranda and exhibit charts. Matthew also works with practice office attorneys on transactional tasks, including contract review and due diligence.



  • Public Policy

Erica Sechrist Senior Strategist Public Policy

Washington, D.C.

Erica Sechrist, Senior Strategist in the Washington, D.C., office, uses her previous experience working with national party committees and in the private sector to bring a unique perspective and understanding when tackling issues our clients face at both the national and state level.

Erica has extensive experience providing advice and developing strategic programs for leadership committees and associations.

Before joining Orrick, Erica worked for Advance America as Director of Government Affairs. In this role, she negotiated legislation with elected officials and regulators and developed strategic relationships with community leaders while running point for Advance America with National Political Committees. Prior to Advance America, Erica served as Finance Director of the Republican State Leadership Committee, Executive Director of the Republican Attorneys General Association, and Chairman’s Foundation Representative of the National Republican Senatorial Committee. In her last year at the Republican State Leadership Committee, the committee raised over $30 million and made historic gains in the 2010 elections, flipping 20 state chambers to Republican control as well as netting six Attorneys General, seven Secretaries of State and three independently elected Lieutenant Governors.



  • Technology Companies Group

Erin Sedloff Managing Associate Technology Companies Group

Santa Monica

Erin Sedloff is an associate in the Technology Companies Group in the Silicon Valley office, whose focus is primarily on representing high growth technology companies in general formation, venture capital and private equity financings, capital markets and mergers and acquisitions transactions.

Prior to joining Orrick, Erin worked as an associate in the litigation departments of Hanson Bridgett LLP and Allen Matkins. Her practice included representing clients in all aspects of general business and real estate litigation. Prior to receiving her legal education, she worked for a global travel company where she was responsible for field and office operations for all itineraries in Costa Rica, and was responsible for product development, vendor relations, and management for multiple itineraries in Costa Rica and Alaska.



  • M&A and Private Equity

John Seegal Partner M&A and Private Equity

San Francisco

John Seegal, a partner in the San Francisco office, is a member of the firm’s Corporate Group. He concentrates his practice on corporate counseling with a focus on buying and selling companies and helping companies to raise capital through public and private offerings of securities.

He has developed particular knowledge and experience in acting as special counsel for sellers and buyers of middle-market companies. This area of practice includes advising buyers and sellers with respect to acquisition strategy, leading or participating in negotiations, structuring friendly mergers and tender offers, and assisting in the smooth implementation of the acquisition transaction, the integration of the acquired business, and the protection of the interests of the shareholders, directors and management of the acquired business.


  • Energy & Infrastructure
  • Renewable Energy
  • M&A and Private Equity

Kristin Seeger Partner Energy & Infrastructure, Renewable Energy

San Francisco

Kristin's practice focuses on the acquisition and sale of domestic and international renewable energy projects as well as project financing (including tax equity financing arrangements) in the renewable energy sector.

Kristin's experience spans projects across the United States and Canada and includes award-winning transactions.



  • Structured Finance
  • Asset Backed Securities

Peter Seel Managing Associate Structured Finance, Asset Backed Securities

New York

Peter Seel is a member of the Structured Finance Group in Orrick's New York office.

His experience includes the representation of investment banks, asset managers and issuers in connection with collateralized loan obligations as well as other financial institutions in a variety of other structured financial products.



  • M&A and Private Equity
  • Technology Companies Group

Mark Seneca Partner M&A and Private Equity, Technology Companies Group

Silicon Valley

Mark Seneca, a Corporate partner in the Silicon Valley office, is a member of Orrick’s M&A and Private Equity Group as well as its Technology Companies Group. Mark has dedicated his legal career to the M&A specialty, with experience in all aspects of mergers and acquisitions transactions involving both public and private companies in domestic and cross-border deals.

Mark has a particular focus on the technology sector, having led hundreds of buy-side and sell-side transactions involving prominent high-tech serial acquirers, unicorns and venture back companies. His sell-side work involves multiple acquisitions by Google, Facebook,, VMware, Microsoft, Intel, IBM, Adobe, Yahoo! and Twitter. These deals include his high profile work for Cruise Automation in its acquisition by General Motors, Nest Labs in its US$3.2 billion acquisition by Google, and Instagram in its US$1.0 billion acquisition by Facebook, which was ranked one of the top 10 largest valued private tech M&A deals in the U.S. in 2012. In an interview with Bloomberg Law for a “Rainmakers” episode, Mark provided a substantive analysis of the Instagram deal, including its industry precedent and influence (click here).

On the buy-side, Mark has served as lead M&A counsel for top public company acquirers (Yelp, Google, Yahoo! and Intellisync) as well as private company serial acquirers (Stripe, Pinterest and Social Finance).



  • Real Estate

Tatyanna Senel Associate Real Estate

Los Angeles

Tatyanna Senel is a Real Estate Associate in the Los Angeles Office.



  • Banking & Finance
  • Structured Finance
  • Real Estate Finance

Laure Seror Associate Banking & Finance, Structured Finance


Laure Seror is a banking and finance lawyer in Orrick's Paris office.

Laure advises French and international banks and financial institutions as well as sponsors and borrowers on French and cross-border structured finance, infrastructure and real estate finance transactions.

Prior to joining Orrick, Laure was an associate for five years in the Banking & Finance department of Freshfields Bruckhaus Deringer.



  • Debt Capital Markets
  • Banking & Finance

Sabrina Setini Associate Debt Capital Markets, Banking & Finance

Rome; Milan

Sabrina Setini, an associate and Italian qualified lawyer in the Rome office, is a member of the Finance Group. Sabrina's practice focuses on corporate finance, structured finance and Debt Capital Markets.

Sabrina specializes in advising prominent Italian and international banks and large corpororations.

Prior to joining Orrick, Sabrina worked in the legal department at the Renewable Energies Division at the Italian Ministry of Environment, where she gained specific energy law experience.

Sabrina gained a Ph.D. in European Private Law and Compared Judicial Systems at the University "Roma TRE" of Rome; and she is fluent in English.



  • Energy
  • Infrastructure
  • Renewable Energy
  • Oil & Gas

Jessica E Sewell Associate Energy, Infrastructure


Jessica counsels energy clients on a wide range of transactions in the energy industry.

She focuses her practice on domestic and international mergers and acquisitions, project development, financing and general corporate matters for clients in the energy and infrastructure sectors. 

Jessica earned her JD with honors from the University of Texas School of Law and dual BA degrees in International Studies and Chinese from the University of Mississippi. While in law school, Jessica served as Managing Editor of the Texas Journal of Oil, Gas, and Energy Law.

Jessica speaks English and Mandarin.