J.A. Glaccum concentrates his practice in the areas of mergers and acquisitions, private equity, corporate finance, securities law and general corporate matters.


Mr. Glaccum has represented acquirers, targets, investment banks, private equity funds and special committees in a number of significant transactions, including public and private acquisitions and divestitures, spin-offs, Reverse Morris Trust transactions, proxy contests, joint ventures and strategic alliances, and other transactional matters. He also has represented clients in public and private capital market transactions, including debt and equity offerings, private equity investments and fund formations. Mr. Glaccum also advises companies on a wide range of corporate, securities laws and corporate governance matters.

In addition to representing clients across many industries, Mr. Glaccum has significant experience representing electric utilities, diversified energy companies, independent power producers, and infrastructure funds and investors in the power and utility space.

Significant representations include:

  • The Advisory Board Company in its $2.6 billion sale of its health care business to OptumInsight, Inc. and its education business to affiliates of Vista Equity Partners LLC in response to Elliott Management’s activist campaign;
  • Amherst Holdings, LLC in the combination of its broker-dealer business Amherst Securities Group L.P. with Pierpont Securities Holdings LLC;
  • AIA Energy North America, LLC, an infrastructure fund, in connection with its acquisition of the entities that own the Cross-Sound Cable System from affiliates of Brookfield Asset Management;
  • the Bureau of National Affairs, Inc., a provider of legal and regulatory research and analysis, in its $990 million acquisition by Bloomberg L.P., a provider of business and financial information and news;
  • Duke Energy Corporation in connection with its:
    • spin-off of Spectra Energy; and
    • sale of its Latin America power portfolio business (ex-Brazil) to funds advised by I Squared Capital for $1.2 billion;
  • Dynegy Inc. in connection with its:
    • stock-for-stock merger with Vistra Energy to create a combined company with an enterprise value in excess of $20 billion; and
    • $3.3 billion acquisition of ENGIE, S.A.’s U.S. fossil electric generation portfolio;
  • Entergy Corporation in connection with its:
    • proposed, but terminated, $6 billion spin-off of its transmission business to ITC Holdings Corp. in a Reverse Morris Trust transaction;
    • asset sale of the James A. FitzPatrick nuclear power plant to Exelon Generation, a subsidiary of Exelon Corporation;
    • pending sale of Entergy Nuclear Vermont Yankee, the owner of the Vermont Yankee nuclear power plant, to NorthStar Holdings; and
    • pending sale of Entergy Nuclear Generation Company, the owner of the Pilgrim nuclear power plan, and Entergy Nuclear Palisades, the owner of the Palisades nuclear power plant, to Holtec International;
  • K Road Power Holdings LLC in connection with its sale to First Solar, Inc. of all of the equity interests of the Moapa River photovoltaic solar electric generating facility project;
  • Leidos Holdings, Inc. in its acquisition of Lockheed Martin’s Information Systems & Global Solutions segment in a Reverse Morris Trust transaction valued at $5 billion;
  • National Grid USA in connection with its participation in New York Transco, LLC, an entity formed by National Grid and three other utility holding companies to develop and expand electric transmission lines and facilities in the state of New York;
  • Northeast Utilities in its merger of equals with NSTAR to create one of the nation’s largest electric utilities with an enterprise value of $17.5 billion;
  • Richard Petty in the sale of the Richard Petty Driving Team and the Richard Petty Driving Experience to Boston Ventures;
  • the special committee of the board of directors of CNX Gas Corporation, a producer of natural gas, in the $964 million acquisition by CONSOL Energy Inc. of the remaining stake in CNX Gas which CONSOL did not own;
  • the special committee of the board of directors of Total System Services Inc. in its $5 billion spin-off from Synovus Financial Corp, its 81 percent parent;
  • TECO Energy in its sale to Emera in a deal valued at $10.4 billion; and
  • Vencore, a portfolio company of Veritas Capital Management and provider of information, engineering and analysis solutions to U.S. intelligence, defense and civilian agencies, in connection with its combination with the U.S. public services business of DXC Technology Co. and KeyPoint Government Solutions in a Reverse Morris Trust transaction.

Additionally, Mr. Glaccum has advised several Skadden investment banking clients in transactional and financial advisory work. Prior to attending law school, Mr. Glaccum was a field artillery officer in the United States Army, where he served in the Republic of Korea and with the 82nd Airborne Division at Fort Bragg, North Carolina.


Presenter, “Recent Trends in Transmission Development, Financing and M&A,” Skadden’s Energy Webinar Series, May 18, 2016



  • J.D., Georgetown University Law Center, 2003 (Administrative Editor, The Tax Lawyer)
  • B.A., Virginia Military Institute, 1996


  • New York
  • District of Columbia

J.A. Glaccum