# EDGAR Filing Document

**Accession Number:** 0001453593
**File Stem:** 0001493152-26-022609
**Filing Date:** 2026-5
**Character Count:** 6964
**Document Hash:** 1eb7441fa1055076c6f00a481cea7f2e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001493152-26-022609.hdr.sgml**: 20260513

**ACCESSION NUMBER**: 0001493152-26-022609

**CONFORMED SUBMISSION TYPE**: S-8 POS

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260513

**DATE AS OF CHANGE**: 20260513

**EFFECTIVENESS DATE**: 20260513

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Xtant Medical Holdings, Inc.
- **CENTRAL INDEX KEY:** 0001453593
- **STANDARD INDUSTRIAL CLASSIFICATION:** SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 205313323
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** S-8 POS
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-212510
- **FILM NUMBER:** 26970935

**BUSINESS ADDRESS:**
- **STREET 1:** 664 CRUISER LANE
- **CITY:** BELGRADE
- **STATE:** MT
- **ZIP:** 59714
- **BUSINESS PHONE:** 406-388-0480

**MAIL ADDRESS:**
- **STREET 1:** 664 CRUISER LANE
- **CITY:** BELGRADE
- **STATE:** MT
- **ZIP:** 59714

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Bacterin International Holdings, Inc.
- **DATE OF NAME CHANGE:** 20100615

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** K KITZ INC
- **DATE OF NAME CHANGE:** 20090108

**As filed with the Securities and Exchange Commission on May 13, 2026**

**Registration No. 333-212510**

**Registration No. 333-191248**

**Registration No. 333-187563**

**Registration No. 333-172891**

**United States**

**SECURITIES AND EXCHANGE cOMMISSION**

**Washington, D.C. 20549**

**post-effective amendment no. 1**

**to**

**fOrm S-8 registration statement NO. 333-212510**

**fOrm S-8 registration statement NO. 333-191248**

**fOrm S-8 registration statement NO. 333-187563**

**fOrm S-8 registration statement NO. 333-172891**

***under***

***the securities act of 1933***

**Xtant Medical holdings, Inc.**

(Exact name of registrant as specified in its charter)

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| | |
|:---|:---|
| **Delaware** | **20-5313323** |
| (State or other jurisdiction of<br> incorporation or organization) | (I.R.S. Employer<br> Identification Number) |

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**664 Cruiser Lane**

**Belgrade, Montana 59714**

**(406) 388-0480**

(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)

**Bacterin International Equity Incentive Plan**

**Amended and Restated Bacterin International Equity Incentive Plan**

**Amended and Restated Xtant Medical Equity Incentive Plan**

**Non-Plan Inducement Stock Option**

(Full title of the plan)

**Sean E. Browne**

**President and Chief Executive Officer**

**Xtant Medical Holdings, Inc.**

**664 Cruiser Lane**

**Belgrade, Montana 59714**

**(406) 388-0480**

(Name, address, including zip code, and telephone number, including area code, of agent for service)

*Copies to:*

**Amy E. Culbert, Esq.**

**Fox Rothschild LLP**

**City Center**

**33 South Sixth Street, Suite 3600**

**Minneapolis, Minnesota 55402**

**(612) 607-7000**

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☐ Accelerated filer ☐ <br> Non-accelerated filer ☒ Smaller reporting company ☒ <br> Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

**EXPLANATORY NOTE**

**DEREGISTRATION OF SECURITIES**

These Post-Effective Amendments relate to the following Registration Statements on Form S-8 (collectively, the "Registration Statements") previously filed by Xtant Medical Holdings, Inc. or its predecessor (the "Company" or "Registrant") with the Securities and Exchange Commission (the "SEC") and are being filed to deregister and remove from registration any and all shares of the Company's common stock, par value $0.000001 per share (the "Common Stock"), that remain unsold as of the date hereof under each of the following Registration Statements:

● Registration Statement on Form S-8 (Registration No. 333-212510) filed with the SEC on July 13, 2016 registering 1,000,000 (83,333 post-reverse stock split) shares of Common Stock to be issued to participants under the Amended and Restated Xtant Medical Equity Incentive Plan (the "Xtant Plan");

● Registration Statement on Form S-8 (Registration No. 333-191248) filed with the SEC on September 19, 2013 registering 2,000,000 (16,666 post-reverse stock splits) shares of Common Stock to be issued to a participant under a Non-Plan Inducement Stock Option Agreement (the "Non-Plan Option");

● Registration Statement on Form S-8 (Registration No. 333-187563) filed with the SEC on March 27, 2013 registering 3,000,000 (25,000 post-reverse stock splits) shares of Common Stock to be issued to participants under the Amended and Restated Bacterin International Equity Incentive Plan (the "Amended Bacterin Plan"); and

● Registration Statement on Form S-8 (Registration No. 333-172891) filed with the SEC on March 17, 2011 registering 6,000,000 (50,000 post-reverse stock splits) shares of the Common Stock to be issued to participants under the Bacterin International Equity Incentive Plan (the "Bacterin Plan" and collectively, with the Amended Bacterin Plan, the Non-Plan Option and the Xtant Plan, the "Plans").

All Common Stock share numbers in the parentheticals above have been adjusted as appropriate to reflect the Company's 1-for-10 reverse stock split effected on July 25, 2014 and its 1-for-12 reverse stock split effected on February 14, 2018.

As of the date of the filing of these Post-Effective Amendments, there are no remaining equity awards outstanding under the Plans; and therefore, the offerings of the shares of Common Stock described above pursuant to the Registration Statements have terminated.

**Signatures**

Pursuant to the requirements of the Securities Act of 1933, as amended, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused these Post-Effective Amendments to the Registration Statements on Form S-8 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Belgrade, State of Montana, on May 13, 2026.

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| | |
|:---|:---|
| **XTANT MEDICAL HOLDINGS, INC.** | **XTANT MEDICAL HOLDINGS, INC.** |
| By: | */s/ Sean E. Browne* |
| Name: | Sean E. Browne |
| Title: | President and Chief Executive Officer |

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No other person is required to sign these Post-Effective Amendments in reliance on Rule 478 of the Securities Act of 1933, as amended.