X0407 4 2023-06-15 0 0001453593 Xtant Medical Holdings, Inc. XTNT 0001242852 MITCHELL-KELLER LORI D 664 CRUISER LANE BELGRADE MT 59714 1 0 0 0 0 Common Stock 2023-06-15 4 A 0 45782 0 A 45782 D These shares are subject to a restricted stock unit award granted under the Xtant Medical Holdings, Inc. Second Amended and Restated 2018 Equity Incentive Plan, (as amended from time to time), and vest and become issuable on June 15, 2024, conditioned upon the Reporting Person remaining a director of Xtant through the vesting date. /s/ Amy E. Culbert, attorney-in-fact 2023-06-15