Exhibit 99.1

Press Release

PRGX Global, Inc. Announces Second Quarter

2013 Financial Results

Highlights

ATLANTA, July 29, 2013 — PRGX Global, Inc. (Nasdaq:PRGX), the world’s leading provider of recovery audit services and the pioneer in Profit Discovery™, today announced its unaudited financial results for the second quarter ended June 30, 2013.

“PRGX bounced back after a difficult first quarter. While the top line remains below where we would like, Adjusted EBITDA recovered nicely in the second quarter as the PRGX team continues to demonstrate its ability to deliver in a challenging environment,” said Romil Bahl, president and chief executive officer.

“In our Recovery Audit Services segments, the Americas resolved the majority of issues that negatively impacted our retail and commercial businesses in Q1. In addition, the Americas business continued to drive out costs, growing gross profits 4.9% over Q2 2012 on comparable revenue; this represents an increase of 256 basis points in gross margin percentage. We believe that our Europe/Asia-Pacific business troughed in the first half of 2013, and expect the team’s actions will drive improved performance in this segment in the second half of the year,” continued Bahl.

“Positive New Services segment performance was headlined by our Healthcare Claims Recovery Audit business which performed well and also benefitted from processing of claims delayed in prior periods. While we are not yet ready to suggest that the double-digit million-dollar quarterly revenue from this segment is sustainable, we are pleased to have achieved our first ever $10 million New Services revenue quarter, and remain excited about the potential of our growth businesses,” concluded Bahl.

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Consolidated Results for the Three Months Ended June 30, 2013

Consolidated revenue for the second quarter of 2013 decreased 2.8% to $50.2 million compared to $51.7 million in the same prior year period. After adjusting for changes in foreign exchange rates, consolidated second quarter revenue in 2013 decreased 2.4% compared to the same period in 2012.

Recovery Audit Services – Americas revenue for the second quarter of 2013 decreased 0.7% to $29.4 million compared to $29.6 million in the same period in the prior year. On a constant dollar basis, adjusted for changes in foreign exchange rates, Recovery Audit Services – Americas revenue was essentially flat compared to 2012.

Recovery Audit Services – Europe/Asia-Pacific revenue for the second quarter of 2013 decreased 19.7% to $10.8 million compared to $13.4 million in the same period in the prior year. On a constant dollar basis, adjusted for changes in foreign exchange rates, Recovery Audit Services – Europe/Asia-Pacific revenue decreased by 18.9% compared to 2012.

New Services revenue for the second quarter of 2013 increased 16.0% to $10.0 million compared to $8.7 million in the same period in the prior year. The New Services segment represents Healthcare Claims Recovery Audit services and our Profit Optimization services.

Total cost of revenue for the second quarter of 2013 was $31.5 million, or 62.8% of revenue, compared to $33.3 million, or 64.5% of revenue, in the same period last year. This decrease in total cost of revenue resulted from decreases in both of the Company’s recovery audit segments driven by the expanded use of its Next-Generation Recovery Audit service model. New Services cost of revenue, on an absolute dollar and percentage of revenue basis, also decreased compared to the prior year period. SG&A for the second quarter of 2013 was $12.6 million, or 25.2% of revenue, compared to $12.7 million, or 24.6% of revenue, in the same period last year. Depreciation and amortization expenses were $3.4 million in the second quarter of 2013 compared to $3.0 million in the prior year second quarter.

Net earnings for the second quarter of 2013 were $1.8 million, or $0.06 per basic and diluted share, compared to net earnings of $1.0 million, or $0.04 per basic and diluted share, for the same period in 2012. Net cash used in operating activities for the second quarter of 2013 was $4.0 million compared to net cash used in operating activities of $1.1 million in the second quarter of 2012. The increase in net cash used in operating activities was due primarily to an increase in unbilled revenue associated with growth in Healthcare Claims Recovery Audit services.

Adjusted EBITDA for the second quarter of 2013 was $7.9 million compared to $7.6 million of Adjusted EBITDA for the same period in 2012. Second quarter 2013 Adjusted EBITDA is earnings before interest, taxes, depreciation and amortization (EBITDA) excluding a charge of $1.2 million related to stock-based compensation, $0.6 million of transformation severance and related expenses, a less than $0.1 million charge for acquisition obligations classified as compensation, and $0.2 million of foreign currency losses on short-term intercompany balances. The comparable Adjusted EBITDA amount for the second quarter of 2012 excludes from EBITDA for such period a $1.2 million charge for stock-based compensation, $0.3 million in wage claim costs, $0.3 million of transformation severance and related expenses, a $0.1 million charge for acquisition obligations classified as

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compensation, and $0.5 million of foreign currency gains on short-term intercompany balances. Schedule 3 attached to this press release provides a reconciliation of net earnings (loss) to each of EBIT (earnings before interest and taxes), EBITDA and Adjusted EBITDA.

Consolidated Results for the Six Months Ended June 30, 2013

Consolidated revenue for the six months ended June 30, 2013 decreased 7.7% to $95.3 million compared to $103.3 million in the same prior year period. After adjusting for changes in foreign exchange rates, consolidated revenue for the six months ended June 30, 2013 decreased 7.1% compared to the same period in 2012.

Recovery Audit Services – Americas revenue for the six months ended June 30, 2013 decreased 4.7% to $55.6 million compared to $58.4 million in the same period in the prior year. On a constant dollar basis, adjusted for changes in foreign exchange rates, Recovery Audit Services – Americas revenue for the six month period decreased by 4.2% compared to the same period in 2012.

Recovery Audit Services – Europe Asia/Pacific revenue for the six months ended June 30, 2013 decreased 21.4% to $21.8 million compared to $27.7 million in the same period in the prior year. On a constant dollar basis, adjusted for changes in foreign exchange rates, Recovery Audit Services – Europe Asia/Pacific revenue for the six month period decreased by 20.2% compared to the same period in 2012.

New Services revenue for the six months ended June 30, 2013 increased 4.1% to $17.9 million compared to $17.2 million in the same period in the prior year.

Total cost of revenue for the six months ended June 30, 2013 was $61.9 million, or 65.0% of revenue, compared to $67.5 million, or 65.4% of revenue, in the same period in the prior year. Cost of revenue as a percentage of revenue declined in the Recovery Audit Services – Americas and New Services segments, but increased in the Recovery Audit Services – Europe/Asia-Pacific segment. SG&A for the six months ended June 30, 2013 was $24.3 million, or 25.5% of revenue, compared to $25.3 million, or 24.5% of revenue, in the same period in the prior year. Depreciation and amortization expenses were $6.6 million for the six months ended June 30, 2013 compared to $6.9 million in the same period in the prior year.

Net earnings for both the six months ended June 30, 2013 and 2012 were $1.3 million, or $0.05 per basic and diluted share. Net cash used in operating activities for the six months ended June 30, 2013 was $3.1 million compared to net cash provided by operating activities of $0.9 million in the same period last year.

Adjusted EBITDA for the six months ended June 30, 2013 was $12.2 million compared to $14.4 million of Adjusted EBITDA for the same period in 2012. For the six months ended June 30, 2013, Adjusted EBITDA was earnings before interest, taxes, depreciation and amortization (EBITDA) excluding a charge of $2.5 million related to stock-based compensation, $0.6 million of transformation severance and related expenses, a $0.1 million charge for acquisition obligations classified as compensation, and $0.6 million of foreign currency losses on short-term intercompany balances. The comparable Adjusted EBITDA amount for the six months ended June 30, 2012 excludes from EBITDA for such period a $2.6 million charge for stock-based compensation, $0.6 million of wage claim costs, $0.5 million of transformation severance and related expenses, a $0.2 million charge for

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acquisition obligations classified as compensation and $0.2 million of foreign currency losses on short-term intercompany balances. Schedule 3 attached to this press release provides a reconciliation of net earnings to each of EBIT, EBITDA and Adjusted EBITDA.

Liquidity

At June 30, 2013, the Company had unrestricted cash and cash equivalents of $31.1 million and had no borrowings against its revolving credit facility. Bank debt outstanding at quarter end was $4.5 million, which represented the outstanding balance on a variable rate term loan due quarterly through December 2013, with a final payment due in January 2014.

Second Quarter Earnings Call

As previously announced, management will hold a conference call tomorrow morning at 8:30 AM (Eastern time) to discuss the Company’s second quarter 2013 financial results. To access the conference call, listeners in the U.S. and Canada should dial (877) 755-7423 at least 5 minutes prior to the start of the conference. Listeners outside the U.S. and Canada should dial (678) 894-3069. To be admitted to the call, listeners should use passcode 12461983.

This teleconference will also be audiocast on the Internet at www.prgx.com (click on “Events & Presentations” under “Investors”). A replay of the audiocast will be available at the same location on www.prgx.com beginning approximately two hours after the conclusion of the live audiocast, extending through September 30, 2013. Please note that the Internet audiocast is “listen-only.” Microsoft Windows Media Player is required to access the live audiocast and the replay and can be downloaded from www.microsoft.com/windows/mediaplayer.

About PRGX Global, Inc.

Headquartered in Atlanta, Georgia, PRGX Global, Inc. is the world’s leading provider of recovery audit services. With over 1,700 employees, the Company operates and serves clients in more than 30 countries and provides its services to over 75% of the top 30 global retailers. PRGX is also pioneering Profit Discovery, a unique combination of audit, analytics and advisory services that improves client financial performance. For additional information, please visit PRGX at www.prgx.com.

Forward-Looking Statements

In addition to historical information, this press release includes certain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include both implied and express statements regarding the Company’s expectations for the remainder of 2013, auditing under its current Medicare RAC subcontracts, the outcome of the rebid of Medicare RAC program contracts and associated transitions and resulting impacts on the Company’s financial results, and the expected benefits of the Company’s redesigned recovery audit service delivery model. Such forward-looking statements are not guarantees of future performance and are subject to risks, uncertainties and other factors that may cause the

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actual results, performance or achievements of the Company to differ materially from the historical results or from any results expressed or implied by such forward-looking statements. Risks that could affect the Company’s future performance include revenue that does not meet expectations or justify costs incurred, the Company’s ability to develop material sources of new revenue in addition to revenue from its core recovery audit services, changes in the market for the Company’s services, the Company’s ability to retain and attract qualified personnel, changes to Medicare and Medicaid recovery audit contractor programs and the outcome of the rebid of the Medicare RAC program contracts, the Company’s ability to integrate recent and future acquisitions, uncertainty in the credit markets, the Company’s ability to maintain compliance with its financial covenants, client bankruptcies, loss of major clients, and other risks generally applicable to the Company’s business. For a discussion of other risk factors that may impact the Company’s business, please see the Company’s filings with the Securities and Exchange Commission, including its Form 10-K filed on March 13, 2013. The Company disclaims any obligation or duty to update or modify these forward-looking statements.

Non-GAAP Financial Measures

EBIT, EBITDA and Adjusted EBITDA are all “non-GAAP financial measures” presented as supplemental measures of the Company’s performance. They are not presented in accordance with accounting principles generally accepted in the United States, or GAAP. The Company believes these measures provide additional meaningful information in evaluating its performance over time, and that the rating agencies and a number of lenders use EBITDA and similar measures for similar purposes. In addition, a measure similar to Adjusted EBITDA is used in the restrictive covenants contained in the Company’s secured credit facility. However, EBIT, EBITDA and Adjusted EBITDA have limitations as analytical tools, and you should not consider them in isolation, or as substitutes for analysis of the Company’s results as reported under GAAP. In addition, in evaluating EBIT, EBITDA and Adjusted EBITDA, you should be aware that, as described above, the adjustments may vary from period to period and in the future the Company will incur expenses such as those used in calculating these measures. The Company’s presentation of these measures should not be construed as an inference that future results will be unaffected by unusual or nonrecurring items. Schedule 3 to this press release provides a reconciliation of net earnings (loss) to each of EBIT, EBITDA and Adjusted EBITDA.

This news release was distributed by GlobeNewswire, www.globenewswire.com

SOURCE: PRGX Global, Inc.

CONTACT: PRGX Global, Inc.

investor-relations@prgx.com

Phone: 770-779-3011

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SCHEDULE 1

PRGX Global, Inc. and Subsidiaries

Condensed Consolidated Statements of Income

(Amounts in thousands, except per share data)

(Unaudited)

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SCHEDULE 2

PRGX Global, Inc. and Subsidiaries

Condensed Consolidated Balance Sheets

(Amounts in thousands)

(Unaudited)

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SCHEDULE 3

PRGX Global, Inc. and Subsidiaries

Reconciliation of Net Earnings to EBIT, EBITDA and Adjusted EBITDA

(Amounts in thousands)

(Unaudited)

EBIT, EBITDA and Adjusted EBITDA are all “non-GAAP financial measures” presented as supplemental measures of our performance. They are not presented in accordance with accounting principles generally accepted in the United States, or GAAP. The Company believes these measures provide additional meaningful information in evaluating the Company’s performance over time, and that the rating agencies and a number of lenders use EBIT, EBITDA and similar measures for similar purposes. In addition, a measure similar to Adjusted EBITDA is used in the restrictive covenants contained in the Company’s secured credit facility. However, EBIT, EBITDA and Adjusted EBITDA have limitations as analytical tools, and you should not consider them in isolation, or as substitutes for analysis of our results as reported under GAAP. In addition, in evaluating EBIT, EBITDA and Adjusted EBITDA, you should be aware that in the future we will incur expenses such as those used in calculating these measures. Our presentation of these measures should not be construed as an inference that our future results will be unaffected by unusual or nonrecurring items.

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SCHEDULE 4

PRGX Global, Inc. and Subsidiaries

Condensed Consolidated Statements of Cash Flows

(Amounts in thousands)

(Unaudited)

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SCHEDULE 5

PRGX Global, Inc. and Subsidiaries

Results by Operating Segment *

(Amounts in thousands)

(Unaudited)

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