X0306 4 2023-02-15 0 0001453593 Xtant Medical Holdings, Inc. XTNT 0001960742 Schallenberger Mark A. 664 CRUISER LANE BELGRADE MT 59714 0 1 0 0 Chief Operations Officer Common Stock, $0.000001 par value 2023-02-15 4 A 0 89000 0 A 89000 D Stock Option (right to buy) 0.77 2023-02-15 4 A 0 105000 0 A 2033-02-15 Common Stock 105000 105000 D These shares will vest and be issued with respect to 22,250 shares on each of February 15, 2024, February 15, 2025, February 15, 2026 and February 15, 2027 pursuant to a restricted stock unit award granted under the Xtant Medical Holdings, Inc. Second Amended and Restated 2018 Equity Incentive Plan, conditioned upon the Reporting Person remaining an employee of Xtant through the vesting date. This option vests with respect to 26,250 shares on February 15, 2024 and with respect to the remaining 75% of such shares over the three-year period thereafter in 12 as nearly equal as possible quarterly installments, conditioned upon the Reporting Person remaining an employee of Xtant through the vesting date. /s/ Amy E. Culbert, attorney-in-fact 2023-02-17