# EDGAR Filing Document

**Accession Number:** 0001772837
**File Stem:** 0001772837-26-000005
**Filing Date:** 2026-2
**Character Count:** 8478
**Document Hash:** 0149a0238e532a72db36560c483f25a2
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001772837-26-000005.hdr.sgml**: 20260227

**ACCESSION NUMBER**: 0001772837-26-000005

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260225

**FILED AS OF DATE**: 20260227

**DATE AS OF CHANGE**: 20260227

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Sponsel David
- **CENTRAL INDEX KEY:** 0001772837

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-52024
- **FILM NUMBER:** 26703077

**MAIL ADDRESS:**
- **STREET 1:** C/O ALPHATEC SPINE, INC.
- **STREET 2:** 5818 EL CAMINO REAL
- **CITY:** CARLSBAD
- **STATE:** CA
- **ZIP:** 92008
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Alphatec Holdings, Inc.
- **CENTRAL INDEX KEY:** 0001350653
- **STANDARD INDUSTRIAL CLASSIFICATION:** SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 202463898
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 1950 CAMINO VIA ROBLE
- **CITY:** CARLSBAD
- **STATE:** CA
- **BUSINESS PHONE:** 760-431-9286

**MAIL ADDRESS:**
- **STREET 1:** 1950 CAMINO VIA ROBLE
- **CITY:** CARLSBAD
- **STATE:** CA

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Sponsel David<br><sub>(Last) (First) (Middle)</sub><br>C/O ALPHATEC SPINE, INC.<br>1950 CAMINO VIDA ROBLE<br><sub>(Street)</sub><br>CARLSBAD, CA 92008<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-25 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_EVP, SALES_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Alphatec Holdings, Inc. [ ATEC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock<sup>(1)(2)</sup> | 2026-02-25 |  | A<sup>(1)</sup> |  | 205094<sup>(1)</sup> | A | $0 | 554594 | D |  |
| Common Stock<sup>(2)(3)</sup> | 2026-02-25 |  | A<sup>(3)</sup> |  | 93410<sup>(3)</sup> | A | $0 | 648004 | D |  |
| Common Stock<sup>(2)(4)</sup> | 2026-02-25 |  | A<sup>(4)</sup> |  | 20380<sup>(4)</sup> | A | <sup>(4)</sup> | 668384 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Restricted Stock Units<sup>(5)</sup> | <sup>(2)</sup> | 2026-02-25 |  | A<sup>(5)</sup> |  | 46705<sup>(5)</sup> |  | <sup>(5)</sup> | <sup>(5)</sup> | Common Stock | 46705 | $0 | 46705 | D |  |
| Restricted Stock Units<sup>(6)</sup> | <sup>(2)</sup> | 2026-02-25 |  | A<sup>(6)</sup> |  | 46705<sup>(6)</sup> |  | <sup>(6)</sup> | <sup>(6)</sup> | Common Stock | 46705 | $0 | 46705 | D |  |

---

### Footnotes:

(1) On February 25, 2026, the issuer awarded 205,094 restricted stock units (RSUs) to the reporting person under a performance based award granted to the reporting person on January 29, 2025 upon confirmation by the issuer's compensation committee of satisfaction of certain performance criteria for the fiscal year ended December 31, 2025. The RSUs vest in three equal installments on each of March 5, 2026, March 5, 2027 and March 5, 2028.

(2) Each RSU represents a contingent right to receive one share of the issuer's common stock.

(3) On February 25, 2026, the issuer awarded 93,410 RSUs to the reporting person. The RSUs vest in three equal installments on each of March 5, 2027, March 5, 2028 and March 5, 2029.

(4) On February 25, 2026, the issuer granted 20,380 RSUs to the reporting person in connection with the issuer's election to grant RSUs to the reporting person in lieu of a portion of the reporting person's 2025 cash bonus. The grant was approved and adopted by the issuer's compensation committee on February 25, 2026. The RSUs vest December 4, 2026. The grant amount was determined using the 30-day average trading price of the issuer's common stock as of close of market on February 25, 2026.

(5) On February 25, 2026, the issuer granted to the reporting person an award of up to 46,705 performance-based RSUs. The RSUs vest upon the issuer's (i) common stock achieving a 30-day average trading price of at least $25.00 per share at any time prior to December 31, 2028, (ii) common stock achieving a 30-day average trading price of at least $36.00 per share at any time prior to December 31, 2030, (iii) achievement of certain operational metrics determined by the issuer's compensation committee measured as of December 31, 2028, or (iv) achievement of certain operational metrics determined by the issuer's compensation committee measured as of December 31, 2030.

(6) On February 25, 2026, the issuer granted to the reporting person an award of up to 46,705 performance-based RSUs. The RSUs vest upon the issuer's (i) common stock achieving a 30-day average trading price of at least $36.00 per share at any time prior to December 31, 2030, or (ii) achievement of certain operational metrics determined by the issuer's compensation committee measured as of December 31, 2030.

**Signature:** /s/ Tyson E. Marshall, Attorney-in-Fact  
**Date:** 2026-02-27

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**