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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Name of Issuer)

(Title of Class of Securities)

(CUSIP Number)

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

X0202 SCHEDULE 13D/A 0001719228 XXXXXXXX LIVE 4 Common Stock, par value $0.00025 per share 09/10/2026 false 0001425450 68752L100 OrthoPediatrics Corp. 2850 Frontier Drive Warsaw IN 46582 C. Birkeland & A. Berlin 312-876-7700 Latham & Watkins LLP 330 N. Wabash Avenue, Suite 2800 Chicago IL 60611 0001719228 N Squadron Capital LLC b OO N DE 0 6201764 0 6201764 6201764 N 23.8 OO Percentages are based on 26,109,788 shares of Common Stock outstanding as of August 4, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarter ended June 30, 2026. Y Squadron Capital Holdings LLC b OO N DE 0 6201764 0 6201764 6201764 N 23.8 OO Percentages are based on 26,109,788 shares of Common Stock outstanding as of August 4, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarter ended June 30, 2026. Y Jennifer N. Pritzker b OO N 10900 6205571 10900 6205571 6216471 N 23.8 IN Percentages are based on 26,109,788 shares of Common Stock outstanding as of August 4, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarter ended June 30, 2026. Y David R. Pelizzon b OO N 44384 6201764 26425 6201764 6246148 N 23.9 IN Percentages are based on 26,109,788 shares of Common Stock outstanding as of August 4, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarter ended June 30, 2026. Common Stock, par value $0.00025 per share OrthoPediatrics Corp. 2850 Frontier Drive Warsaw IN 46582 This Amendment No. 4 to Schedule 13D ("Amendment No. 4") amends and supplements the Schedule 13D originally filed by the Reporting Persons on March 18, 2021 (as amended to date, the "Schedule 13D"). Capitalized terms used herein without definition shall have the meaning set forth in the Schedule 13D. Item 5(a) of the Schedule 13D is amended and restated in its entirety as follows: The information contained on the cover pages to this Schedule 13D is incorporated herein by reference. Squadron Capital LLC ("SC LLC") is a manager-managed limited liability company and, as of the date hereof, directly holds 6,201,764 shares of Common Stock. The voting and investment decisions of SC LLC are made by its managing committee, consisting of Jennifer N. Pritzker and David R. Pelizzon. In such capacity, each of Ms. Pritzker and Mr. Pelizzon may, for the purposes hereof, be deemed to beneficially own the shares of Common Stock held directly by SC LLC. Mr. Pelizzon also directly holds 44,384 shares of Common Stock, including 17,959 restricted shares of Common Stock that Mr. Pelizzon has the ability to vote but is restricted from transferring until their vesting date. Ms. Pritzker directly and/or jointly holds 10,900 shares of Common Stock. Ms. Pritzker may also, for the purposes hereof, be deemed to beneficially own (i) 500 shares of Common Stock held directly by the Pritzker Military Museum and Library, for which she is the sole member, (ii) 1,300 shares of Common Stock directly held by the Tawani Foundation, for which she is the sole member, (iii) 1,300 shares of Common Stock held by the Pritzker Military Foundation, for which she is the sole member, and (iv) 707 shares of Common Stock held directly by her spouse. Squadron Capital Holdings LLC ("SCH LLC") is a manager-managed limited liability company and the controlling member of SC LLC, and in such capacity may be deemed to beneficially own the shares of Common Stock held directly by SC LLC. The voting and investment decisions of SCH LLC are made by its managing committee, consisting of Mary Falcon, David Pelizzon and Michelle Nakfoor. The members of the managing committee of SCH LLC disclaim beneficial ownership as a result of serving as members of the management committee. See Item 5(a). On September 2, 2026, SC LLC sold an aggregate 22,500 shares of Common Stock in the open market for a weighted average price of $23.35. On September 10, 2026, SC LLC sold 302,369 shares of Common Stock for a weighted average price of $21.01. These sales were undertaken by SC LLC to provide additional capital for its other portfolio businesses. Squadron Capital LLC /s/ David R. Pelizzon David R. Pelizzon, President 09/11/2026 Squadron Capital Holdings LLC /s/ Mary Falcon Mary Falcon, Manager 09/11/2026 Jennifer N. Pritzker /s/ Jennifer N. Pritzker Jennifer N. Pritzker 09/11/2026 David R. Pelizzon /s/ David R. Pelizzon David R. Pelizzon 09/11/2026