Surgalign (SRGAQ) 8-K Other Events

Exhibit 99.1

Press Release

RTI Surgical Holdings, Inc.^® to Delay Form10-K filing for Fiscal Year 2019

Deerfield, Ill.,March 16, 2020 – RTI Surgical Holdings, Inc. (Nasdaq: RTIX), a global surgical implant company, announced it will file a Form12b-25 Notification of Late Filing with the Securities and Exchange Commission (the “SEC”) to provide a 15 calendar day extension within which to file its Form10-K for the fiscal year ended December 31, 2019.

The Audit Committee (the “Audit Committee”) of the Company’s Board of Directors, with the assistance of independent legal and forensic accounting advisors, is in the process of conducting an internal investigation of current and prior period matters relating to the Company’s revenue recognition practices regarding the timing of revenue with respect to certain contractual arrangements, primarily with OEM customers, including the accounting treatment, financial reporting and internal controls related to such arrangements. The Audit Committee investigation was precipitated by an ongoing SEC investigation related to the periods 2014 through 2016. The Company will not be in a position to file its Form10-K until the Audit Committee concludes its investigation and the Company and its independent auditor assess the results of that investigation. The Company is working to complete its analysis and file its Form10-K for the year ended December 31, 2019 within the extension period (through March 31, 2020), but no assurance can be given that it will be able to do so.

Immediately following the filing of our10-K, the Company expects to file the preliminary proxy statement for the special meeting of its shareholders to, among other things, consider and vote on various proposals necessary to close the previously announced Equity Purchase Agreement, dated January 13, 2020 , with Ardi Bidco Ltd., a Delaware corporation and an entity affiliated with Montagu Private Equity, LLP (the “Buyer”), pursuant to which the Buyer will acquire the OEM business ”) of the Company by means of a sale (the “Sale”) of certain affiliates of the Company. We continue to expect the Sale to close in the first half of 2020.

Because of the circumstances set forth above, there will be no call related to the Company’s 2019 financial results.

About RTI Surgical Holdings, Inc.

RTI Surgical Holdings is a leading global surgical implant company providing surgeons with safe biologic, metal and synthetic implants. Committed to delivering a higher standard, RTI’s implants are used in sports medicine, plastic surgery, spine, orthopedic and trauma procedures and are distributed in over 50 countries. RTI has four manufacturing facilities throughout the U.S. and Europe. RTI is accredited in the U.S. by the American Association of Tissue Banks and is a member of AdvaMed. For more information, please visitwww.rtix.com. Connect with us onLinkedIn andTwitter.

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, which may include statements regarding RTI Surgical Holdings’ ability to file its Form10-K for the year ended December 31, 2019 within the extension period and RTI Surgical Holdings’ ability to close the Sale in the first half of 2020. These forward-looking statements are based on management’s current expectations, estimates and projections

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about our industry, our management’s beliefs and certain assumptions made by our management. Words such as “anticipates,” “expects,” “intends,” “plans,” “believes,” “seeks,” “estimates,” variations of such words and similar expressions are intended to identify such forward-looking statements. The forward-looking statements are not guarantees of future performance and are based on certain assumptions including general economic conditions, as well as those within RTI Surgical Holdings’ industry, and numerous other factors and risks identified in the Company’s Form10-K for the fiscal year ended December 31, 2018 and other filings with the SEC. Our actual results may differ materially from the anticipated results reflected in these forward-looking statements. Important factors that could cause actual results to differ materially from the anticipated results reflected in these forward-looking statements include risks and uncertainties relating to the following: (i) uncertainty as to the scope, timing and ultimate findings of the internal investigation; (ii) the costs and expenses relating to the internal investigation; (iii) the impact of the internal investigation on RTI Surgical Holdings, its management and operations, including potential financial impact on RTI Surgical Holdings; (iv) the risk of potential litigation or regulatory action arising from the internal investigation and its findings or from the failure to timely file the Form10-K; (v) the potential identification of control deficiencies, including potential material weaknesses in internal control over financial report and the impact of the same; (vi) potential reputational damage that RTI Surgical Holdings may suffer as a result of the matters under investigation; (vii) the possibility that RTI Surgical Holdings will be unable to file its Form10-K within the extension period of 15 calendar days provided under Rule12b-25 of the Securities Exchange Act of 1934; (viii) the risk that the filing of the Form10-K will take longer than currently anticipated; (ix) the risk that RTI Surgical Holdings may be unable to obtain shareholder approval for the proposed transaction or that RTI Surgical Holdings or Montagu may be unable to obtain regulatory approvals required for the proposed transaction, or required regulatory approvals may delay the proposed transaction; (x) the risk that a condition to the closing of the proposed transaction may not be satisfied; (xi) the risk that the occurrence of an event that could give rise to termination of the definitive agreement; (xii) the risk that shareholder litigation in connection with the proposed transaction may affect the timing or occurrence of the proposed transaction or result in significant costs of defense, indemnification and liability; (xiii) the timing to consummate the proposed transaction; (xiv) the effect of the announcement or disruption from the proposed transaction making it more difficult to retain and hire key personnel and maintain relationships with customers, suppliers and other third parties; (xv) the diversion of management time and attention on the proposed transaction; (xvi) general worldwide economic conditions and related uncertainties; (xvii) the impact of potential global health emergencies such asCOVID-19 (coronavirus); (xviii) the effect and timing of changes in laws or in governmental regulations; and (xix) other risks described in our public filings with the SEC. Additional risks and uncertainties will be discussed in the proxy statement and other materials that RTI Surgical Holdings will file with the SEC in connection with the proposed transaction. There can be no assurance that the proposed transaction will be completed, or if it is completed, that it will close within the anticipated time period or that the expected benefits of the proposed transaction will be realized. These factors should be considered carefully and undue reliance should not be placed on the forward-looking statements. Each forward-looking statement in this communication speaks only as of the date of the particular statement. Copies of the Company’s SEC filings may be obtained by contacting the Company or the SEC or by visiting RTI’s website atwww.rtix.com or the SEC’s website atwww.sec.gov. We undertake no obligation to update these forward-looking statements except as may be required by law.

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Important Additional Information and Where to Find It

In connection with the proposed transaction, RTI Surgical Holdings will file relevant materials with the Securities and Exchange Commission, including a preliminary proxy statement on Schedule 14A. Following the filing of the definitive proxy statement with the SEC, the Company will mail the definitive proxy statement and a proxy card to each stockholder entitled to vote at the special meeting related to the proposed transaction.INVESTORS AND SECURITY HOLDERS ARE ENCOURAGED TO READ THE PROXY STATEMENT AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC WHEN SUCH DOCUMENTS BECOME AVAILABLE, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION.Investors and security holders will be able to obtain the proxy statement and other relevant materials filed by the Company with the SEC free of charge at the SEC’s website, www.sec.gov, from the Company at its website, www.rtix.com, or by contacting the Company’s Investor Relations at (847)530-0249.

Participants in Solicitation

The Company and its respective directors and executive officers may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction. Information concerning the Company’s participants is set forth in the proxy statement, filed March 25, 2019, for the Company’s 2019 annual meeting of stockholders as filed with the SEC on Schedule 14A. Additional information regarding the interests of such participants in the solicitation of proxies in respect of the proposed transaction will be included in the proxy statement and other relevant materials to be filed with the SEC when they become available.

Media and Investor Contact

Jonathon Singer

jsinger@rtix.com

+1 847 271 5574