ATEC Announces Pricing of Public Offering of Common Stock

ATEC Announces Pricing of Public Offering of Common Stock

CARLSBAD, California, October 24, 2023 Alphatec Holdings, Inc. ( ATEC ) (NASDAQ: ATEC), a provider

of innovative solutions dedicated to revolutionizing the approach to spine surgery, today announced the pricing of an underwritten public offering of 14,300,000 shares of its common stock at a public offering price of $10.50 per share. The

offering is expected to close on October 27, 2023, subject to the satisfaction of customary closing conditions. In connection with the offering, ATEC has granted the underwriters a 30-day option to

purchase up to an additional 2,145,000 shares of common stock in the offering at the public offering price, less underwriting discounts and commissions.

Morgan Stanley, TD Cowen, Barclays and Stifel are acting as joint book-running managers in the offering.

ATEC expects to receive gross proceeds from the offering of approximately $150 million, assuming no exercise of the

underwriters option to purchase additional shares.

The shares of common stock are being offered pursuant to a shelf registration

statement on Form S-3 (File No. 333-271336) previously filed with and declared effective by the Securities and Exchange Commission (the SEC ). A

preliminary prospectus supplement and accompanying base prospectus relating to the offering, and a final prospectus supplement and accompanying base prospectus relating to the offering each contain important information relating to the ATEC s

shares of common stock. A preliminary prospectus supplement and accompanying prospectus relating to the offering have been filed with the SEC and are available on the SEC s website at www.sec.gov. The final prospectus supplement and

accompanying base prospectus will be filed with the SEC and available on the SEC s website thereafter, and, when available, may also be obtained from Morgan Stanley, Attention: Prospectus Department, 180 Varick Street, 2nd Floor, New

York, New York 10014; Cowen and Company, LLC, 599 Lexington Avenue, New York, New York 10022, by telephone at (833) 297-2926 or by email at prospectus_ecm@cowen.com; or Barclays Capital Inc., c/o Broadridge

Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, by telephone at 1-888-603-5847 or by email at

barclaysprospectus@broadridge.com.

This press release shall not constitute an offer to sell nor the solicitation of an offer to buy, nor

shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale

would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

its wholly owned subsidiaries, Alphatec Spine, Inc., EOS imaging S.A.S. and SafeOp Surgical, Inc., is a medical device company dedicated to revolutionizing the approach to spine surgery through clinical distinction. ATEC s Organic Innovation

Machine is focused on developing new approaches that integrate seamlessly with the Company s expanding AlphaInformatiX Platform to better inform surgery and more safely and reproducibly

achieve the goals of spine surgery. ATEC s vision is to be the Standard Bearer in Spine.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995

that involve risks and uncertainty. Such statements are based on management s current expectations and are subject to a number of risks and uncertainties that could cause actual results to differ materially from those described in the

forward-looking statements. ATEC cautions investors that there can be no assurance that actual results or business conditions will not differ materially from those projected or suggested in such forward-looking statements as a result of various

factors. The words believe, will, should, expect, intend, estimate, look forward and anticipate, variations of such words and similar expressions

identify forward-looking statements, but their absence does not mean that a statement is not a forward-looking statement. Forward-looking statements include, but are not limited to, the Company s expectations regarding the completion, timing

and size of the proposed public offering. Important factors that could cause actual results to differ significantly from those expressed or implied by such forward-looking statements include, but are not limited to, risks and uncertainties related

to market and other conditions and the satisfaction of customary closing conditions related to the proposed public offering. A further list and description of these and other factors, risks and uncertainties can be found in ATEC s most

recent annual report, any subsequent quarterly and current reports, and certain other filings, filed with the SEC. ATEC disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information,

future events, or otherwise, unless required by law.

Chief Financial Officer

Investor/Media Contact:

investorrelations @atecspine.com