SCHEDULE 13D/A 0001193125-19-104001 0001527166 XXXXXXXX LIVE 3 Common Stock, par value $0.01 per share 03/31/2025 false 0001517228 20337X109 CommScope Holding Company, Inc.

3642 E. US Highway 70 Claremont NC 28610

Jeffrey Ferguson (202) 729-5626 1001 Pennsylvania Avenue, NW Suite 220 South Washington DC 20004 0001527166 N The Carlyle Group Inc. OO N DE 0.00 45243696.00 0.00 45243696.00 45243696.00 N 17.3 CO 0001548626 N Carlyle Holdings I GP Inc. OO N DE 0.00 45243696.00 0.00 45243696.00 45243696.00 N 17.3 CO 0001548627 N Carlyle Holdings I GP Sub L.L.C. OO N DE 0.00 45243696.00 0.00 45243696.00 45243696.00 N 17.3 OO Limited Liability Company 0001548628 N Carlyle Holdings I L.P. OO N DE 0.00 45243696.00 0.00 45243696.00 45243696.00 N 17.3 PN 0001790577 N CG Subsidiary Holdings L.L.C. OO N DE 0.00 45243696.00 0.00 45243696.00 45243696.00 N 17.3 OO Limited Liability Company 0000933790 N TC Group, L.L.C. OO N DE 0.00 45243696.00 0.00 45243696.00 45243696.00 N 17.3 OO Limited Liability Company 0001548639 N TC Group Sub L.P. OO N DE 0.00 45243696.00 0.00 45243696.00 45243696.00 N 17.3 PN 0001772672 N TC Group VII S1, L.L.C. OO N DE 0.00 45243696.00 0.00 45243696.00 45243696.00 N 17.3 OO Limited Liability Company 0001772631 N TC Group VII S1, L.P. OO N DE 0.00 45243696.00 0.00 45243696.00 45243696.00 N 17.3 PN 0001772667 N Carlyle Partners VII S1 Holdings, L.P. OO N DE 0.00 45243696.00 0.00 45243696.00 45243696.00 N 17.3 PN Common Stock, par value $0.01 per share CommScope Holding Company, Inc. 3642 E. US Highway 70 Claremont NC 28610 Explanatory Note This Amendment No. 3 to Schedule 13D ("Amendment No. 3") amends and supplements the Schedule 13D filed with the United States Securities and Exchange Commission on April 11, 2019 (as amended to date, the "Schedule 13D"), relating to the Common Stock, par value $0.01 per share (the "Common Stock"), of CommScope Holding Company, Inc., a Delaware corporation (the "Issuer"). Capitalized terms used herein without definition shall have the meaning set forth in the Schedule 13D. Item 3 of the Schedule 13D is hereby amended by inserting the following information at the end of Item 3: From March 31, 2024 through March 31, 2025, Carlyle Partners VII acquired a total of 82,118 shares of Series A Preferred Stock as a result of dividend payments from the Issuer on the Series A Preferred Stock. Item 5 of the Schedule 13D is hereby amended and restated in its entirety as follows: The information contained on the cover pages is incorporated by reference into this Item 5. The amount of securities reported herein is based on 261,800,844 shares of Common Stock outstanding as of the date hereof, consisting of 216,557,148 shares of Common Stock outstanding as of February 12, 2025, as set forth in the Issuer's Annual Report on Form 10-K filed with the Securities and Exchange Commission on February 26, 2025, and 45,243,696 shares of Common Stock underlying the Series A Preferred Stock held of record by Carlyle Partners VII. Carlyle Partners VII is the record holder of 1,244,203 shares of Series A Preferred Stock, which are convertible into 45,243,696 shares of Common Stock, subject to adjustment as provided in the Certificate of Designations. The Carlyle Group Inc., a publicly traded company listed on Nasdaq, is the sole shareholder of Carlyle Holdings I GP Inc., which is the managing member of Carlyle Holdings I GP Sub L.L.C., which is the general partner of Carlyle Holdings I L.P., which, with respect to the securities reported herein, is the managing member of CG Subsidiary Holdings L.L.C., which is the managing member of TC Group, L.L.C., which is the general partner of TC Group Sub L.P., which is the managing member of TC Group VII S1, L.L.C., which is the general partner of TC Group VII S1, L.P., which is the general partner of Carlyle Partners VII. Accordingly, each of the foregoing entities may be deemed to share beneficial ownership of the shares of Common Stock beneficially owned by Carlyle Partners VII. The information contained on the cover pages is incorporated by reference into this Item 5. Except as described in Item 3 and Schedule I to this Amendment No. 3, during the past 60 days none of the Reporting Persons or Related Persons has effected any transactions in the Common Stock. None. Not applicable. The Carlyle Group Inc. /s/ Anne Frederick, attorney-in-fact 04/02/2025 Carlyle Holdings I GP Inc. /s/ Anne Frederick, attorney-in-fact 04/02/2025 Carlyle Holdings I GP Sub L.L.C. By: Carlyle Holdings I GP Inc., its sole member, By: /s/ Anne Frederick, attorney-in-fact 04/02/2025 Carlyle Holdings I L.P. /s/ Anne Frederick, attorney-in-fact 04/02/2025 CG Subsidiary Holdings L.L.C. /s/ Anne Frederick, attorney-in-fact 04/02/2025 TC Group, L.L.C. /s/ Anne Frederick, attorney-in-fact 04/02/2025 TC Group Sub L.P. By: TC Group, L.L.C., its general partner, By: /s/ Anne Frederick, attorney-in-fact 04/02/2025 TC Group VII S1, L.L.C. /s/ Jeremy W. Anderson 04/02/2025 TC Group VII S1, L.P. /s/ Jeremy W. Anderson 04/02/2025 Carlyle Partners VII S1 Holdings, L.P. By: TC Group VII S1, L.P., its general partner, By: /s/ Jeremy W. Anderson 04/02/2025