X0202 SCHEDULE 13G 0001446580 XXXXXXXX LIVE Common Stock, $0.001 par value per share 06/30/2026 0000910329 Medifast, Inc. 58470H101 1501 S. Clinton Street Baltimore MD 21224 Rule 13d-1(b) Susquehanna Portfolio Strategies, LLC DE 41777 587214 41777 587214 587214 5.3 OO With respect to Row 5 through Row 9 above, Susquehanna Securities, LLC is an independent broker-dealer which, together with Susquehanna Portfolio Strategies, LLC, may be deemed a group. For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons. Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person. Susquehanna Securities, LLC DE 545437 587214 545437 587214 587214 5.3 BD OO With respect to Row 5 through Row 9 above, Susquehanna Securities, LLC is an independent broker-dealer which, together with Susquehanna Portfolio Strategies, LLC, may be deemed a group. For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons. Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person. Medifast, Inc. 1501 S. Clinton Street, Baltimore, Maryland 21224 This statement is filed by the entities listed below, who are collectively referred to herein as "Reporting Persons" with respect to the shares of Common Stock, $0.001 par value per share (the "Shares"), of Medifast, Inc. (the "Company"). (i) Susquehanna Portfolio Strategies, LLC (ii) Susquehanna Securities, LLC The address of the principal business office of each of Susquehanna Portfolio Strategies, LLC and Susquehanna Securities, LLC is: 401 E. City Avenue Suite 220 Bala Cynwyd, PA 19004 Citizenship is set forth in Row 4 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. N BD The information required by this Item 4(a) is set forth in Row 9 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. The number of Shares reported as beneficially owned by Susquehanna Securities, LLC includes options to buy 542,700 Shares. The Company's Quarterly Report on Form 10-Q, filed on August 3, 2026, indicates that there were 11,181,000 Shares outstanding as of June 30, 2026. 5.3 The information required by this Item 4(c)(i) is set forth in Row 5 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. The information required by this Item 4(c)(ii) is set forth in Row 6 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. The information required by this Item 4(c)(iii) is set forth in Row 7 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. The information required by this Item 4(c)(iv) is set forth in Row 8 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. EXHIBIT INDEX EXHIBIT DESCRIPTION ________ ________ 99 Joint Filing Agreement Susquehanna Portfolio Strategies, LLC /s/ Brian Sopinsky 08/14/2026 Susquehanna Securities, LLC /s/ Brian Sopinsky 08/14/2026