X0508 4/A 2023-10-15 2023-10-17 0 0001453593 Xtant Medical Holdings, Inc. XTNT 0001790461 Browne Sean E 664 CRUISER LANE BELGRADE MT 59714 1 1 0 0 President and CEO 0 Common Stock 2023-10-15 4 F 0 105442 1.08 D 1575358 D The purpose of this Form 4 amendment is to correct the number of shares withheld by the Issuer to pay tax withholding obligations upon vesting and settlement of restricted stock unit awards. Includes 174,216 shares to be issued upon vesting pursuant to a restricted stock unit award granted under the Xtant Medical Holdings, Inc. 2023 Equity Incentive Plan and 433,024 shares to be issued upon vesting pursuant to restricted stock awards granted under the Xtant Medical Holdings, Inc. 2018 Equity Incentive Plan, as amended from time to time, all conditioned upon the Reporting Person remaining an employee of Xtant through the vesting dates. /s/ Amy E. Culbert, attorney-in-fact 2024-02-16