Alphatec Holdings Inc

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No.)

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ALPHATEC HOLDINGS, INC.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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A Letter from our CEOPatrick S. Miles

Dear Stockholder:

We cordially invite you to attend our 2024 Annual Meeting of Stockholders to be held at 10:00 a.m., Pacific Time, on Wednesday, June 12, 2024, at our corporate headquarters, which are located at 1950 Camino Vida Roble, Carlsbad, CA 92008.

Details regarding the meeting, the business to be conducted at the meeting, and information about Alphatec Holdings, Inc. that you should consider when you vote your shares are described in this proxy statement.

We are asking stockholders of Alphatec Holdings, Inc.:

•

to elect nine persons to our Board of Directors;

•

to ratify the selection of Deloitte & Touche LLP as our independent registered public accounting firm for our fiscal year ending December 31, 2024; and

•

to approve, on an advisory basis, the compensation of our named executive officers.

The Board of Directors recommends the approval of each of the proposals. Such other business will be transacted as may properly come before the annual meeting.

Under Securities and Exchange Commission rules that allow companies to furnish proxy materials to stockholders over the Internet, we have elected to deliver our proxy materials to the majority of our stockholders over the Internet. This delivery process allows us to provide stockholders with the information they need, while at the same time conserving natural resources and lowering the cost of delivery. On May 2, 2024, we intend to begin sending to our stockholders a Notice of Internet Availability of Proxy Materials (the "Notice") containing instructions on how to access our proxy statement for our 2024 Annual Meeting of Stockholders and our 2023 Annual Report to Stockholders, which are located online at www.proxydocs.com/ATEC. The Notice also provides instructions on how to vote online or by telephone and includes instructions on how to receive a paper copy of the proxy materials by mail.

We hope you will be able to attend the annual meeting. Whether you plan to attend the annual meeting or not, it is important that you cast your vote either in person or by proxy. You may vote over the Internet as well as by telephone or by mail. When you have finished reading the proxy statement, you are urged to vote in accordance with the instructions set forth in this proxy statement. We encourage you to vote by proxy so that your shares will be represented and voted at the meeting, whether or not you can attend.

Thank you for your continued support of Alphatec Holdings, Inc.

Sincerely,

President, Chief Executive Officer and Chairman of the Board

Table of Contents

1950 Camino Vida Roble

Carlsbad, CA 92008

NOTICE OF 2024 ANNUAL MEETING OF STOCKHOLDERS

TIME: 10:00 a.m. Pacific Time

DATE: Wednesday, June 12, 2024

PLACE: Alphatec Holdings, Inc., 1950 Camino Vida Roble, Carlsbad, CA 92008

NOTICE IS HEREBY GIVEN that the annual meeting of stockholders of Alphatec Holdings, Inc. (the "Annual Meeting") will be held on Wednesday, June 12, 2024, for the following purposes:

To elect nine directors to serve until the 2025 Annual Meeting of Stockholders;

To ratify the selection of Deloitte & Touche LLP as our independent registered public accounting firm for our fiscal year ending December 31, 2024;

To approve, on an advisory basis, the compensation of our named executive officers; and

To transact such other business as may be properly presented at the Annual Meeting and any adjournments or postponements thereof.

The foregoing items of business are more fully described in the proxy statement accompanying this Notice.

Our Board of Directors has fixed the close of business on April 17, 2024, as the record date for the Annual Meeting. Only stockholders of record at the close of business on that date may vote at the Annual Meeting or any adjournment or postponement thereof. A total of 139,805,908 shares of our common stock were issued and outstanding as of the record date. Each share of common stock entitles its holder to one vote. Cumulative voting of shares of common stock is not permitted.

At the Annual Meeting and for the ten-day period immediately prior to the Annual Meeting, the list of our stockholders entitled to vote at the Annual Meeting will be available for inspection at our corporate headquarters, which are located at 1950 Camino Vida Roble, Carlsbad, CA 92008 for such purposes as are set forth in the General Corporation Law of the State of Delaware.

At least a majority of all issued and outstanding shares of common stock entitled to vote at a meeting is required to constitute a quorum for the conduct of business at the Annual Meeting. Accordingly, whether you plan to attend the Annual Meeting or not, we ask that you vote by following the instructions in the accompanying proxy statement and submit your proxy by the Internet, telephone or mail in order to ensure the presence of a quorum. You may change or revoke your proxy at any time before it is voted at the meeting.

BY ORDER OF THE BOARD OF DIRECTORS

President, Chief Executive Officer and Chairman of the Board

1950 Camino Vida Roble

Carlsbad, CA 92008