MCLEAN, VA--(Marketwire - Jun 18, 2012) - Primus Telecommunications Group, Incorporated (PTGi) (NYSE: [ PTGI ]), a global facilities-based integrated provider of advanced telecommunications products and services, is set to join the broad-market Russell 3000® Index when Russell Investments reconstitutes its comprehensive set of U.S. and global equity indexes on June 25, as confirmed by the June 15 list of additions posted on [ www.russell.com ].

Annual reconstitution of Russell's U.S. indexes captures the 4,000 largest U.S. stocks as of the end of May, ranking them by total market capitalization. Membership in the Russell 3000, which remains in place for one year, means automatic inclusion in the large-cap Russell 1000® Index or small-cap Russell 2000® Index as well as the appropriate growth and value style indexes. Russell determines membership for its equity indexes primarily by objective, market-capitalization rankings and style attributes.

Peter D. Aquino, Chairman, President and CEO, stated, "PTGi's reselection for the Russell 3000® Index reflects the transformation of our business, our balance sheet, and our asset portfolio, all designed to return maximum value to our stakeholders. Our membership in a group of companies that serve as a global benchmark for corporate performance is a tribute to our entire team. PTGi is honored to be considered one of the top 3000 largest U.S. publicly traded companies."

The Russell 3000 also serves as the U.S. component to the Russell Global Index, which Russell launched in 2007.

Russell indexes are widely used by investment managers and institutional investors for index funds and as benchmarks for both passive and active investment strategies. In the institutional marketplace, an industry-leading $3.9 trillion in assets currently are benchmarked to them. Russell calculates more than 80,000 benchmarks daily covering approximately 98 percent of the investable market globally, 83 countries and more than 10,000 securities. These investment tools originated from Russell's multi-manager investment business in the early 1980s when the company saw the need for a more objective, market-driven set of benchmarks in order to evaluate outside investment managers.

Total returns data for the Russell 3000 and other Russell Indexes is available at [ http://www.russell.com/indexes/data/US_Equity/Russell_US_Index_returns.asp ].

About Russell
Russell Investments (Russell) is a global asset manager and one of only a few firms that offers actively managed, multi-asset portfolios and services that include advice, investments and implementation. Working with institutional investors, financial advisors and individuals, Russell's core capabilities extend across capital markets insights, manager research, Indexes, portfolio implementation and portfolio construction.

Russell has approximately $155 billion in assets under management (as of 3/31/2012) and works with 2,400 institutional clients, more than 580 independent distribution partners and advisors, and individual investors globally. Founded in 1936, Russell is a subsidiary of The Northwestern Mutual Life Insurance Company.

About PTGi
PTGi (Primus Telecommunications Group, Incorporated) is a leading provider of advanced communication solutions, including traditional and IP voice, data, mobile services, broadband Internet, collocation, hosting, and outsourced managed services to business and residential customers in Canada and the United States. PTGi is also one of the leading international wholesale service providers to fixed and mobile network operators worldwide. PTGi owns and operates its own global network of next-generation IP soft switches, media gateways, hosted IP/SIP platforms, broadband infrastructure, fiber capacity, and data centers located in Canada. Founded in 1994, PTGi is headquartered in McLean, Virginia.

Forward-Looking Statements
This press release includes "forward-looking statements" as defined by the Securities and Exchange Commission (SEC). All statements, other than statements of historical fact, included herein that address activities, events or developments that PTGi expects, believes or anticipates will or may occur in the future, including statements regarding PTGi's beliefs, expectations, prospects, strategic plans and statements regarding the potential for future transactions, are forward-looking statements. These forward-looking statements are based on the information available to, and the expectations and assumptions deemed reasonable by, PTGi at the time this news release is issued. These forward-looking statements are subject to risks and uncertainties that may cause actual results to differ materially including, among other things, those outlined in our filings with the SEC, including PTGi's most recent Annual Report on Form 10-K and Quarterly Report on Form 10-Q on file with the SEC. Factors that relate to PTGi's strategic review process include uncertainty regarding the length or complexity of the strategic review process, the possibility that the strategic review process will not lead to any other transactions, the potential that the process will distract the attention of PTGi's Board of Directors and management from its business, the potential that PTGi will incur significant expenses pursuing one or more transactions unsuccessfully, the risk that PTGi's pursuit of strategic alternatives will impair its relationships with customers, suppliers and employees, the risk of claims or litigation arising from PTGi's pursuit of strategic alternatives and the use of proceeds arising from any transaction. Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of their dates. Except as required by law, PTGi does not undertake any obligation to update or revise its statements made in this press release, whether as a result of new information, future events or otherwise.