John J. Mahon represents private equity firms and other financial sector participants in a wide range of capital markets and securities law matters. John regularly assists clients in connection with the establishment and operation of business development companies (BDCs), registered closed-end funds and other similar public and private vehicles that comply with complex regulatory structures, including the Investment Company Act of 1940, the Investment Advisers Act of 1940 and the Dodd-Frank Act. With more than a decade of experience, John has been involved with more than 100 debt and equity offerings, including over 20 initial public offerings (IPOs), reflecting an aggregate of over $10 billion in total proceeds. His work in securities law and mergers and acquisitions includes providing guidance to many New York Stock Exchange (NYSE) and Nasdaq-listed companies in connection with ongoing corporate governance and U.S. Securities and Exchange Commission (SEC) reporting and compliance matters. John routinely handles issues involving tender offers, proxy solicitations, going-private transactions and beneficial ownership reporting obligations.

John serves as an adjunct professor at The George Washington University Law School and is the former chair of the Corporate Finance Committee of the Corporation, Finance and Securities Law Section of the District of Columbia Bar. He speaks and writes on topics related to SEC regulations and capital raising. John holds a J.D. from Georgetown University Law Center and a B.S.B.A., cum laude, from the University of Richmond, where he was a member of Beta Gamma Sigma.


Represented ING Global Advantage and Premium Opportunity Fund in $345-million IPO.

Advised Solar Capital Ltd. in $105-million IPO.

Represented Goldman Sachs & Co., Wells Fargo Securities and Morgan Stanley in connection with New Mountain Finance Corp.’s $100-million IPO.

Represented Solar Senior Capital Ltd. in $170-million IPO.

Assisted GSV Capital in $98-million follow-on equity offering.

Represented TICC Capital Corporation in connection with over $400 million in follow-on debt and equity offerings.

Advised TAC Acquisition Corporation in $120-million IPO.

Represented ING Asia Pacific fund in $275-million IPO.

Represented Global Logistics in $80-million IPO.

Assisted Bear Stearns & Co., Banc of America Securities, UBS Investment Bank and SunTrust in connection with PennantPark’s $300-million IPO.


Blank Check IPO Could Blaze New Path For Tech Unicorns,” Law360, Aug. 24, 2017 (quoted)

“The Rising Tide of Private BDCs: A New Take on the Traditional Private Credit Fund Structure,” Bloomberg Law – Securities Regulation & Law Report, June 12, 2017

“BDC Fees and Structures Evolving,” The Hedge Fund Journal, April/May 2017 (interview)

“Business Development Company Update: Excessive Fees Lawsuit Against Adviser Dismissed,” SRZ Client Alert, March 2, 2017 (co-author)republished in The Investment Lawyer, June 2017

“The Trendiest Investment on Wall Street…That Nobody Knows About,” The Wall Street Journal, November 2016 (quoted)

“SRZ Reviews SEC’s Derivatives Proposal,” The Hedge Fund Journal, March 2016 (quoted)

“Blank Check IPOs Cash in While Broader Market Flounders,” Law360, March 7, 2016 (quoted)

“3 Details to Consider Before Inking a Take-Private Deal,” Law360, Feb. 16, 2016 (quoted)

“BDCs Are Different but Ownership Limits Apply to Them as Well,” IA Watch, Jan. 25, 2016 (quoted)

“SEC Proposes Rule Governing the Use of Derivatives and Short Sales by Registered Investment Companies and Business Development Companies,” SRZ Client Alert, Jan. 15, 2016 (co-author); republished in Westlaw Journal — Derivatives, March 24, 2016

“Corporate Social Media Comes of Age,” NYSE – Corporate Board Member, 2015 (quoted)

“Executive Compensation Disclosure: Practical Implications in the Age of Greater Disclosure,” Inside the Minds: SEC Compliance Best Practices, 2009

“Features and Practical Implications of the Recent Rule 144 Revisions,” Inside the Minds: Analyzing Rule 144 Revisions, 2008

Speaking Engagements

“Designing and Launching 1940 Act Regulated Funds: A Practical Guide,” SRZ 26th Annual Private Investment Funds Seminar, New York, January 2017

“Mutual Fund Liquidity Risk Management Programs: What You Need to Know About New 1940 Act Rule 22e-4,” SRZ Webinar, December 2016

“Managing ‘40 Act Funds: What Alternative Investment Managers Need to Know,” SRZ Webinar, September 2016

Moderator, “Integrating Regulated Funds onto Your Platform,” MFA Seminar, June 2016

“Permanent Capital and Other Registered Funds: Access to New Capital Sources” and “Private Funds: The New Banks,” SRZ 25th Annual Private Investment Funds Seminar, January 2016

“Everything You and Your Clients Need to Know About SPACs,” District of Columbia Bar Luncheon, February 2008

“Mergers and Acquisitions Issues,” SEC 2003 International Institute for Securities Market Development


  • Former Chair, Corporate Finance Committee, Corporation, Finance and Securities Law Section, District of Columbia Bar
  • Member, Business Law Section, American Bar Association


  • The Legal 500 United States
  • Washington DC Super Lawyers “Rising Star” (2013-2014)
  • Recipient, SEC Capital Markets Award (2002)
  • Adjunct Professor, The George Washington University Law School

Prior Experience

  • Sutherland Asbill & Brennan LLP
  • U.S. Securities and Exchange Commission