Exhibit 99.1

Sterling Reports Third Quarter 2021 Results

Delivers Revenue Growth of 44.2%; Organic Constant Currency Revenue Growth of 43.2%

Company Provides Guidance for Full Year 2021

NEW YORK, November 10, 2021 (GLOBENEWSWIRE) – Sterling Check Corp. (NASDAQ: STER) (“Sterling” or “the Company”) a leading global provider of technology-enabled background and identity verification services, today announced financial results for the third quarter ended September 30, 2021.

Third Quarter 2021 Highlights

All results compared to prior-year period

Josh Peirez, Sterling CEO, said, “I am very proud of our team for completing the company’s successful IPO and for all their hard work in support of that process. Even while completing the IPO, our team delivered record results in the third quarter with organic constant currency revenue growth in all our industry verticals and geographies plus robust adjusted EBITDA margin expansion. These results are a testament to our people-first approach, global scale, geographic and verticalized delivery model, and differentiated technology. I am thrilled with our year to date results and our momentum heading into next year as we close out what has been a record year of revenue and profitability thus far in 2021.”

Third Quarter 2021 Results

Revenue for the third quarter of 2021 increased by $52.0 million, or 44.2%, to $169.6 million, including 43.2% organic constant currency revenue growth and 1.0% growth due to the impact of fluctuations in foreign exchange currency rates, as compared to $117.6 million in the third quarter of 2020. There was no impact to results from acquisition activity in the quarter. The increase in revenue was primarily driven by continued growth in existing clients, growth in cross-sell and upsell, significant new client growth, and strong revenue retention. In the third quarter of 2021, approximately 18% of revenue was generated outside of the U.S. compared to 16% in the third quarter of 2020.

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GAAP net loss was $25.3 million, or $0.28 per diluted share, for the third quarter of 2021, as compared to a net loss of $10.4 million, or $0.12 per diluted share, for the third quarter of 2020. The third quarter of 2021 net loss was driven primarily by IPO-related transaction costs and one-time stock-based compensation costs related to the IPO. GAAP net loss margin for the third quarter of 2021 was (14.9%), compared to (8.8%) for the prior year period.

Adjusted EBITDA for the third quarter of 2021 was $51.3 million, up 68.7% from $30.4 million for the third quarter of 2020. Adjusted EBITDA margin for the third quarter of 2021 increased to 30.3% from 25.9% for the prior year period.

Adjusted net income for the third quarter of 2021 was $31.6 million, up 187.5% from $11.0 million for the third quarter of 2020. Adjusted earnings per share for the third quarter of 2021 were $0.33 per diluted share, up 167.5% from $0.12 per diluted share for the third quarter of 2020.

Balance Sheet and Cash Flow

Sterling’s shares of common stock commenced trading on the Nasdaq Global Select Market on September 23, 2021. The initial public offering of 16,427,750 shares consisted of 4,760,000 newly issued shares sold by the Company, 9,525,000 secondary shares sold by existing stockholders, and 2,142,750 additional secondary shares sold pursuant to the full exercise of the underwriters’ option to purchase additional shares of common stock. The IPO was priced at $23 per share. The Company received net proceeds of approximately $94.5 million from the offering after deducting underwriting discounts and commissions and offering expenses. Additionally, in connection with the consummation of the IPO and effective upon closing of the IPO on September 27, 2021, the Company amended its revolving credit facility to increase borrowing capacity from $85.0 million to $140.0 million and extend the maturity date from June 19, 2022 to August 11, 2026. As of September 30, 2021, available borrowings under the revolving credit facility, net of letters of credit outstanding were $139.3 million.

For the nine months ended September 30, 2021, the Company generated Net Cash provided by Operating Activities of $38.9 million, compared to $25.9 million in the previous period. For the nine months ended September 30, 2021, the Company generated $58.3 million of free cash flow, adjusted for one-time, cash, non-operating expenses related to the IPO, compared to $12.8 million in the previous period. Capital expenditures in the nine months ended September 30, 2021 totaled $14.6 million. consisting primarily of software development costs. Sterling ended the third quarter of 2021 with cash and cash equivalents of $192.4 million, of which $100 million was used to pay down the term loan on November 1, 2021, reducing annual interest expense by at least $4.5 million. Sterling ended the third quarter of 2021 with a net leverage ratio of 2.6x net debt to Adjusted EBITDA.

Full Year 2021 Guidance

Sterling is providing guidance for full year 2021 as detailed below. The following forward-looking statements reflect Sterling’s expectations as of today’s date. Actual results may differ materially.

The Company has not presented a quantitative reconciliation of the forward-looking non-GAAP financial measure “Adjusted EBITDA” to its most directly comparable GAAP financial measure because it is impractical to forecast certain items without unreasonable efforts due to the uncertainty and inherent difficulty of predicting the occurrence and financial impact of and the periods in which such items may be recognized.

Conference Call Details

Sterling will hold a conference call to discuss the third quarter of 2021 financial results today, November 10, 2021 at 8:30 AM Eastern Time.

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Participants may access the conference call by dialing 1-844-200-6205 or 1-929-526-1599 and using conference code 174981 approximately ten minutes before the start of the call. A live audio webcast of the conference call, together with related presentation materials, will also be available on Sterling’s investor relations website at https://investor.sterlingcheck.com under “News & Events”.

A replay, along with the related presentation materials, will be available after the conclusion of the call on Sterling’s investor relations website under “News & Events” or by dialing 1-866-813-9403 or 1-929-458-6194, access code 018413. The telephone replay will be available through Wednesday, November 24, 2021.

Forward-Looking Statements

This press release contains forward-looking statements. All statements that address expectations, guidance, outlook, targets, or projections about the future, including statement’s regarding the Company’s expectations, beliefs, plans, strategies, objectives, prospects, assumptions, or future events or performance, are forward-looking statements. Forward-looking statements can be identified by forward-looking terminology such as “aim,” “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “might,” “plan,” “potential,” “predict,” “projection,” “seek,” “should,” “will” or “would,” or the negative thereof or other variations thereon or comparable terminology. The Company has based these forward-looking statements on current expectations, assumptions, estimates and projections. Such forward-looking statements are only predictions and involve known and unknown risks and uncertainties, many of which are beyond Sterling’s control. These and other important factors, including those discussed more fully elsewhere in this release and in the Company’s filings with the Securities and Exchange Commission, particularly in the final prospectus filed with the SEC on September 24, 2021 and the latest quarterly report on Form 10-Q, may cause actual results, performance or achievements to differ materially from those expressed or implied by these forward-looking statements, or could affect Sterling’s share price. The forward-looking statements contained in this release are not guarantees of future performance and actual results of operations, financial condition, and liquidity, and the development of the industry in which the Company operates, may differ materially from the forward-looking statements contained in this release. Any forward-looking statement made in this release speaks only as of the date of such statement. Except as required by law, Sterling does not undertake any obligation to update or revise, or to publicly announce any update or revision to, any of the forward-looking statements, whether as a result of new information, future events or otherwise, after the date of this release.

Non-GAAP Financial Information

This report contains “non-GAAP financial measures,” which are financial measures that are not calculated and presented in accordance with GAAP.

Specifically, the Company makes use of the non-GAAP financial measures “Adjusted EBITDA,” “Adjusted EBITDA Margin,” “Adjusted Free Cash Flow” “Adjusted Net Income,” “Adjusted Earnings Per Share,” and “Organic constant currency revenue growth” to assess the performance of the Company’s business.

Adjusted EBITDA is a non-GAAP financial measure and defined as net income adjusted for provision for income taxes, interest expense, depreciation and amortization, stock-based compensation, costs related to merger and acquisition activity (“M&A”), IPO costs, optimization and restructuring, technology transformation costs, foreign currency (gains) and losses, and other costs affecting comparability. Adjusted EBITDA Margin is defined as Adjusted EBITDA divided by revenue for the applicable period. Adjusted Free Cash Flow is a non-GAAP financial measure and is defined as Net Cash provided by (used in) Operating Activities minus Capital Expenditures. For the nine months ended September 30, 2021, the Company has adjusted Free Cash Flow for one-time, cash, non-operating charges related to the completed IPO. The Company presents Adjusted EBITDA, Adjusted EBITDA Margin, and Adjusted Free Cash Flow because the Company believes that these measures assist investors and analysts in comparing the Company’s operating performance across reporting periods on a consistent basis by excluding items that

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the Company does not believe are indicative of the Company’s core operating performance. Management and the Company’s Board of Directors use Adjusted EBITDA to evaluate the factors and trends affecting the Company’s business to assess the Company’s financial performance and in preparing and approving the Company’s annual budget and believe it is helpful in highlighting trends in the Company’s core operating performance. Further, the Company’s executive incentive compensation is based in part on components of Adjusted EBITDA. Adjusted EBITDA and Adjusted EBITDA Margin have limitations as analytical tools and should not be considered in isolation or as substitutes for the Company’s results as reported under GAAP. Adjusted EBITDA excludes items that can have a significant effect on the Company’s profit or loss and should, therefore, be considered only in conjunction with net income (loss) for the period. The Company’s management uses Adjusted EBITDA to supplement GAAP results to evaluate the factors and trends affecting the business to assess the Company’s financial performance and in preparing and approving the Company’s annual budget and believes it is helpful in highlighting trends in the Company’s core operating performance. Because not all companies use identical calculations, these measures may not be comparable to other similarly titled measures of other companies.

Adjusted Net Income is a non-GAAP profitability measure. Adjusted Net Income is defined as net income (loss) adjusted for amortization of acquired intangible assets, stock-based compensation, costs related to acquisition, IPO costs, optimization and restructuring, technology transformation costs, and certain other costs affecting comparability, adjusted for an applicable tax rate. Adjusted Earnings Per Share is defined as Adjusted Net Income divided by diluted weighted average shares for the applicable period. The Company has presented Adjusted Net Income and Adjusted Earnings Per Share because the Company believes that these measures assist investors and analysts in comparing the Company’s operating performance across reporting periods on a consistent basis by excluding certain material non-cash items and unusual items that the Company does not expect to continue at the same level in the future. The Company’s management believes that the inclusion of supplementary adjustments to net income (loss) applied in presenting Adjusted Net Income provide additional information to investors about certain material non-cash items and about items that the Company does not expect to continue at the same level in the future. Adjusted Net Income and Adjusted Earnings Per Share have limitations as analytical tools, and you should not consider such measures either in isolation or as substitutes for analyzing the Company’s results as reported under GAAP.

Organic constant currency revenue growth is a “non-GAAP financial measure,” which is a financial measure that is not calculated and presented in accordance with generally accepted accounting principles in the United States (“GAAP”). The Company calculates organic constant currency revenue growth by adjusting for any acquisition activity that contributed revenue in the current period, which was not present in the prior period, and converting the current period revenue at foreign currency exchange rates consistent with the prior period. There was no impact of acquisition activity on the Company’s revenue in the three and nine months ended September 30, 2021 or in the three and nine months ended September 30, 2020. Organic constant currency revenue growth has limitations as an analytical tool, and you should not consider such a measure either in isolation or as substitutes for analyzing the Company’s results as reported under GAAP. In particular, organic constant currency revenue growth does not reflect acquisition activity or the impact of foreign currency exchange rate fluctuations.

About Sterling

Sterling—a leading provider of background and identity services—offers background and identity verification to help over 47,000 clients create people-first cultures built on foundations of trust and safety. Sterling’s tech-enabled services help organizations across all industries establish great environments for their workers, partners, and customers. With operations around the world, Sterling conducted more than 89 million background checks in the twelve months ended September 30, 2021.

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Contacts

Investors

Judah Sokel

IR@sterlingcheck.com

Media

Jamie Serino

Jamie.Serino@sterlingcheck.com

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CONSOLIDATED FINANCIAL STATEMENTS

STERLING CHECK CORP.

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND

COMPREHENSIVE LOSS

Three and Nine Months Ended September 30, 2020 and 2021

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STERLING CHECK CORP.

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS

December 31, 2020 and September 30, 2021

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STERLING CHECK CORP

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

Nine Months Ended September 30, 2020 and 2021

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RECONCILIATION OF CONSOLIDATED NON-GAAP FINANCIAL MEASURES

The following table reconciles revenue growth, the most directly comparable GAAP measure, to organic constant currency revenue growth for the three and nine months ended September 30, 2021.

The following table reconciles net loss, the most directly comparable GAAP measure, to Adjusted EBITDA for the three and nine months ended September 30, 2020 and 2021.

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The following table summarizes these costs for the three and nine months ended September 30, 2020 and 2021.

The following table presents the calculation of Net Loss Margin and Adjusted EBITDA Margin for the three and nine months ended September 30, 2020 and 2021.

The following tables reconcile net loss, the most directly comparable GAAP measure, to Adjusted Net Income and Adjusted Earnings Per Share for the three and nine months ended September 30, 2020 and 2021.

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The following table presents the calculation of Adjusted Diluted Earnings Per Share for the periods presented.

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The following table summarizes these costs for the three and nine months ended September 30, 2021.

For further detail, see footnotes of Form 10-Q in the section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations”.

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The following table reconciles net cash flow provided by operating activities, the most directly comparable GAAP measure, to Adjusted Free Cash Flow for the nine months ended September 30, 2020 and 2021.

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