Our senior team is built of professionals with decades of experience as advisors, bankers, lawyers, and compliance managers.



Managing Director

Bob is the founder and Managing Partner of Tangent, as well as our consulting affiliate Rice Partners.  His unique perspectives stem from an unusual combination of careers: Wall Street financial products law partner; Justice Department trial attorney; technology entrepreneur; public company CEO (of the successor to his startup); investment advisor; and venture investor.  

He is also a Senior Advisor to Neuberger Berman and Wilshire Funds Management, and serves on the boards of Nasdaq Private Markets and the Investment Advisor to the Value Line Funds.  He is the best-selling author of the Alternative Answer and Three Moves Ahead, a Contributing Editor to Investment News, and appears frequently across the business media. He holds Series 7, 24, and 63 securities licenses. Check the background of this investment professional on FINRA’s BrokerCheck


Managing Director

Tom has over 25 years experience in the financial, marketing and technology industries and manages the firm's Compliance Services group providing regulatory compliance consulting services to the alternative investment industry.

Tom has significant experience as a practicing attorney in real estate, corporate finance and business law and is a member of the Massachusetts Bar.  As the head of the firm's Compliance Services group, Tom directs all regulatory compliance consulting for the firm and holds chief compliance officer and general counsel positions for several of the firm's clients.

Tom holds a B.A. in Economics from Harvard University and a JD degree from Boston College School of Law.

Brian O’Donoghue

Managing Director

Before joining Tangent Capital, Brian O’Donoghue was a founding member of Arklow Capital, LLC, a Registered Investment Advisor managing a portfolio of long and short investments primarily in the U.S. public markets, which earned compounded annual returns of over 11% from its launch in January 2005 through its determination to wind up in June 2010.  Before founding Arklow, Brian was an executive officer of Viewpoint Corporation (later known as Enliven Marketing Technologies Corporation), a publicly-traded internet marketing and software company.  Prior to joining Viewpoint in 2000, he was an attorney in the Global Corporate Finance and Financial Restructuring groups of Milbank, Tweed, Hadley & McCloy specializing in finance and securities, mergers and acquisitions, public and private offerings, and restructurings and reorganizations.  Brian holds a J.D. from Fordham University School of Law and a B.A. from Queens College.


Managing Director

Tom Mahoney has over 25 years of experience in the alternative investments industry and has raised over $ 7 billion for hedge funds, private equity funds and corporate private equity financings since 1985.

In addition to leading several global hedge fund and private equity investment banking teams at major Wall Street firms, most recently Mr. Mahoney served as Managing Director with Compass Advisers Group, LLC and earlier served as Chief Operating Officer, Chief Risk Officer and Head of Alternative Investments with Gabelli & Partners, a subsidiary of Gabelli Asset Management. At Gabelli, Mr. Mahoney was instrumental in the launch of several new hedge funds with global institutional investors (proprietary single and multi-strategy funds, separate accounts and offshore fund of funds) as well as a doubling of alternative assets under management to over $1 billion.

Prior to Gabelli, during a ten-year tenure with Merrill Lynch, Mr. Mahoney created the firm's global hedge fund capital raising business as well as the industry-leading preferred stock capital markets franchise. Mr. Mahoney subsequently led Deutsche Bank’s industry pre-eminent technology private equity financing business, while also raising private equity funds and structuring strategy-diversified hedge fund portfolios for non-U.S. institutional investors. Mr. Mahoney also founded PaineWebber’s Private Equity Group and was a member of the Investment Committee for an investment partnership for Investment Banking Division employees. He started his career in international M&A at Dillon Read.

Mr. Mahoney is a member of the Council on Foreign Relations and currently serves on the Board of Overseers of Mount Auburn Hospital, an affiliate of Harvard Medical School. He previously served on the Board of Directors of the New York City Opera, and was Co-Head of Alternative Investments on the Investment Committee.

Mr. Mahoney earned an A.B. degree in chemistry from Harvard College and an M.B.A. from the Wharton School at the University of Pennsylvania. He holds Series 7, 24, 63 and 79 FINRA securities licenses. Check the background of this investment professional on FINRA’s BrokerCheck.


Managing Director

Suraj Patel has extensive experience working in regulatory and administrative law across various disciplines. Prior to joining Tangent Capital, Suraj worked with the National Wildlife Federation, where he produced a policy report that examines the legal, regulatory and commercial issues facing offshore wind energy development along the Atlantic Coast.

As a clerk for the Supreme Court of India, he focused on constitutional law issues and he also worked as a legal case analyst for asylum seekers in London, England.

Suraj is a barrister-at-law, admitted to practice in England and Wales; his legal training in London focused on commercial and contract work, with an emphasis on international law. He went on to pursue a Master of Laws (LL.M.) degree in International Business and Trade at Fordham University School of Law, graduating cum laude. Suraj has a Master of Science (M.Sc) degree in Sociology from the London School of Economics and Political Sciences, London and graduated summa cum laude with a B.A. in Rhetoric and English Language and Literature from the University of Michigan, Ann Arbor. Check the background of this investment professional on FINRA’s BrokerCheck.

Kristopher Zdyb

Kristopher Zdyb is an alternative investments fundraising executive with a substantial track record of successfully raising funds for a diverse group of some of the largest and most well-known hedge and private equity funds, and includes securing day one capital used to launch new funds

Kristopher has held roles at Apollo Global Management, Atlantic Investment Management, Macquarie and JPMorgan Partners among others. Mr. Zdyb earned a B.A. (cum laude) in Political Science in 1992 from the University of Rochester. In addition, Kristopher received an MBA in in 1998 from the Kellogg School at Northwestern University and he remains a proud Wildcat. Check the background of this investment professional on FINRA’s BrokerCheck.

Deborah Weir, cfa

Deborah is a senior executive with over 30 years of securities industry experience. She entered finance as a fixed-income trader and institutional portfolio manager with a predecessor firm of DWS Investments - Scudder, Stevens & Clark. Her clients included the Mayo Clinic, United Technologies and Rockwell International. Her work for institutions includes the development of portfolio immunization, duration analysis and asset-backed security management. She invested in options and futures for ultra-high net worth individuals.

She has specialized in alternative assets since 1985. She has facilitated the growth of some of the most successful commodities pools and funds of hedge funds with introductions to high-net-worth individuals, family offices, corporations and public pension funds.

Ms. Weir is a published author and frequent speaker on financial topics. Futures Magazine, Active Trader and the American Association of Individual Investors Journal publish her articles. She lectures at universities in New York and Connecticut and is on the faculty of the New York Institute of Finance. Her articles appear on the institute’s blog. Ms. Weir is the author of Wiley & Sons’ publication, TIMING THE MARKETS, the first book to use information from the fixed-income markets for allocation.

Ms. Weir earned a B.S. at Miami University in Oxford, Ohio and an MBA with a concentration in finance at New York University. She is a Chartered Financial Analyst (CFA) and a past president of the CFA Society of Stamford. Check the background of this investment professional on FINRA’s BrokerCheck.

Walter Cook

Walter is a senior executive with over 30-years management experience in commercial banking. He has provided expert advisory services to the Costa Rican Ministry of Economy and the World Bank. At Tangent Capital Partners, he acts as the exclusive sales agent for The Community Development Fund (CDCDX), an open-ended mutual fund established by Mr. Kenneth Thomas, Ph.D.  CDCDX provides efficient and effective Investment Test and Community Development Test solutions for U.S. commercial bank requirements under the Community Reinvestment Act (CRA).  The purpose of CRA is to encourage U.S. depository institutions to help meet the credit needs of the communities in which they operate, including low- and moderate-income neighborhoods in a manner consistent with safe and sound banking operations.

Walter was CEO and Chairman of Hemisphere National Bank and earlier an Executive Vice President of First Republic Bank (NYSE: FRC). Mr. Cook conceived and helped establish FRC’s successful wealth management strategy overseeing the establishment of First Republic Trust Company, First Republic’s securities broker dealer operations and its integrated investment management capabilities. Earlier in his career, Walter spent 20 years at Republic National Bank of New York and Republic New York Corporation (formerly NYSE: RNB) and served as regional CEO at RNB’s banks in California, Japan, Hong Kong, and Chile, among others.

Walter is a graduate of Duke University and earned two master’s degrees—an MALD from Tufts University’s Fletcher School in International Monetary Economics and an MBA from the Harvard Business School. Check the background of this investment professional on FINRA’s BrokerCheck.

Joseph D. Stecher

Joseph D Stecher is a business builder with more than 25 years’ experience in private equity real estate finance and technology, a principal investor who has committed over $5 billion to real estate projects in the US, Asia, Europe, and Latin America, and a capital advisor.

Joseph founded Candlewood Investors in 2012, which advises institutions and high net worth investors on principal investments in private equity real estate funds, coinvestments, and secondaries, and through his affiliation with Tangent Capital Partners, advises investment managers on capital raising strategies.

Joseph launched Morgan Stanley AIP’s Real Estate Fund of Funds business the day after Bear Stearns failed, with a staff of two marketers and US$100 million in inherited assets under management. Four years later, as CIO and head of the business, he had built a team of seven investors and two marketers in New York and London and had nearly $700 million in commitments with visibility to over $1 billion.

Before joining Morgan Stanley in 2008, Joseph was a managing director in the Goldman Sachs Private Equity Group (PEG), a private equity fund of funds business.

From 1991 to 2006 Joseph invested on behalf of the General Motors Pension Fund where he committed, refinanced and sold over $5 billion (equity) to a eighteen domestic and non-US private equity real estate funds, and to direct controlling interests in 47 million square feet of office and industrial developments and acquisitions in major US markets.

Joseph has a BA with honors in Literature with Philosophy and History from Wesleyan University in Middletown, Connecticut and an MBA in Finance from New York University Stern School of Business in New York. Check the background of this investment professional on FINRA’s BrokerCheck.

Angela Hyland

Ms. Hyland has a long and varied career, primarily focused in the area of Public Finance. She spent many years at a major rating agency (S & P) heading up several rating groups. She went on to investment banking, first with Bear Stearns, then with J. P. Morgan and several international banks, structuring and marketing billions of dollars of infrastructure finance. Her expertise covers transactions initiated by both governmental entities, as well as public-private partnerships. Her clients have been diverse (Sovereigns, multi - laterals, not-for-profits, authorities) with a particular emphasis on the transportation sector (domestic and international airport finance). 

Ms. Hyland holds a B. A. degree in Economics from Brooklyn College and she attended the New School. She has spoken frequently to Public Finance trade groups as well as given expert testimony on such issues. Check the background of this investment professional on FINRA’s BrokerCheck.

Mike Iannaccone

Mr. Iannaccone has devoted his 25 year career to the banking sector; working in banks, writing equity research on financial institutions, investing in, and providing financial and strategic advice to and structuring transactions for financial service companies. Mike has personally completed over 100 merger, acquisition, divestiture and capital raise engagements for various financial institutions with aggregate transaction value in excess of $4 billion. Other career high points include his leadership roles with boutique investment banking firms including Performance Trust Capital Partners, Howe Barnes Investments, Inc., Fox-Pitt Kelton, Inc., and Keefe Bruyette & Woods, Inc. Furthermore, Mike provided equity research through MDI Investments, Inc., a company that he formed to cover the financial services sector. Mike has been quoted in The Chicago Tribune, American Banker, Crain's Chicago Business and SNL Securities Newsletters. In addition, Mike is routinely interviewed by First Business News (a cable news program broadcasted in 155 different markets across the United States) for comments and insights on the financial services sector. Mr. Iannaccone graduated from St. Johns University in 1984 with a B.S. and Kellogg Graduate School of Business from Northwestern in 1996 with an MBA.

Check the background of this investment professional on FINRA’s BrokerCheck.


Sean O’Shea is Managing Principal of Sienna Capital Partners in New York, where he provides capital raising and strategic advisory services to the private equity real estate industry. Previously, he was a senior investment professional with the Global Real Estate Multi-Manager Group of Aviva Investors, which managed over $8.7 billion in institutional real estate assets across separate accounts and co-mingled funds invested in over 150 underlying fund interests and secured positions. Sean joined Aviva Investors in 2008 as part of its acquisition of Madison Harbor Capital.

Sean served on the Investments Team at both Aviva and Madison Harbor since 2006, which reviewed over 1,700 prospective fund investments targeting the Americas, Europe and Asia and over $9 billion in secondary and recapitalization transactions. His investment experience includes sourcing and underwriting of primary investments in open and closed-ended real estate funds, secondary investments in illiquid partnership interests and restructurings and recapitalizations of funds and portfolios. In addition, he was the Fund Manager on four comingled real estate funds-of-funds that invested $375 million in global, US-only and emerging markets strategies. He was responsible for investment recommendations, portfolio analysis, asset management activities, quarterly valuations and investor reporting.

Sean is a graduate of Rutgers University and holds both an MSc in Real Estate from New York University and an MBA from Georgia State University. He is a member of the Pension Real Estate Association, the Urban Land Institute and the International Council of Shopping Centers.