X0202 SCHEDULE 13G/A 0001409751 XXXXXXXX LIVE 4 Common Stock, $0.001 par value per share 03/31/2026 0001314727 Sonos, Inc. 83570H108 301 Coromar Drive Santa Barbara CA 93117 Rule 13d-1(c) Coliseum Capital Management, LLC b DE 0 18070762 0 18070762 18070762 N 15.2 IA Coliseum Capital, LLC b DE 0 15043618 0 15043618 15043618 N 12.6 OO Coliseum Capital Partners, L.P. b DE 0 12923136 0 12923136 12923136 N 10.8 PN Coliseum Capital Co-Invest IV, L.P. b DE 0 2120482 0 2120482 2120482 N 1.8 PN Adam Gray b X1 0 18070762 0 18070762 18070762 N 15.2 IN Christopher Shackelton b X1 0 18070762 0 18070762 18070762 N 15.2 IN Sonos, Inc. 301 Coromar Drive, Santa Barbara, CA 93117 This Schedule 13G is being filed on behalf of Coliseum Capital Management, LLC ("CCM"), Coliseum Capital, LLC ("CC"), Coliseum Capital Partners, L.P. ("CCP"), Coliseum Capital Co-Invest IV, L.P. ("CCC IV"), Adam Gray ("Gray") and Christopher Shackelton ("Shackelton" and together with CCM, CC, CCP, CCC IV and Gray, the "Reporting Persons"). The business address of the Reporting Persons is 105 Rowayton Avenue, Rowayton, CT 06853. (i) CCM is a Delaware limited liability company; (ii) CC is a Delaware limited liability company; (iii) CCP is a Delaware limited partnership; (iv) CCC IV is a Delaware limited partnership, (v) Gray is a United States citizen; and (vi) Shackelton is a United States citizen. Y (i) CCM is the beneficial owner of 18,070,762 shares of common stock, $0.001 par value per share ("Common Stock"); (ii) CC is the beneficial owner of 15,043,618 shares of Common Stock; (iii) CCP is the beneficial owner of 12,923,136 shares of Common Stock; (iv) CCC IV is the beneficial owner of 2,120,482 shares of Common Stock; (v) Gray is the beneficial owner of 18,070,762 shares of Common Stock; and (vi) Shackelton is the beneficial owner of 18,070,762 shares of Common Stock. (i) CCM - 15.2%; (ii) CC - 12.6%; (iii) CCP - 10.8%; (iv) CCC IV - 1.8%; (v) Gray - 15.2%; and (vi) Shackelton - 15.2%. The ownership percentage of each Reporting Person has been calculated based on 119,128,671 shares of Common Stock issued and outstanding as of April 17, 2026 as reported in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 5, 2026. (i) 0 shares of Common Stock for CCM; (ii) 0 shares of Common Stock for CC; (iii) 0 shares of Common Stock for CCP; (iv) 0 shares of Common Stock for CCC IV; (v) 0 shares of Common Stock for Gray; and (vi) 0 shares of Common Stock for Shackelton. (i) 18,070,762 shares of Common Stock for CCM; (ii) 15,043,618 shares of Common Stock for CC; (iii) 12,923,136 shares of Common Stock for CCP; (iv) 2,120,482 shares of Common Stock for CCC IV; (v) 18,070,762 shares of Common Stock for Gray; and (vi) 18,070,762 shares of Common Stock for Shackelton. (i) 0 shares of Common Stock for CCM; (ii) 0 shares of Common Stock for CC; (iii) 0 shares of Common Stock for CCP; (iv) 0 shares of Common Stock for CCC IV; (v) 0 shares of Common Stock for Gray; and (vi) 0 shares of Common Stock for Shackelton. (i) 18,070,762 shares of Common Stock for CCM; (ii) 15,043,618 shares of Common Stock for CC; (iii) 12,923,136 shares of Common Stock for CCP; (iv) 2,120,482 shares of Common Stock for CCC IV; (v) 18,070,762 shares of Common Stock for Gray; and (vi) 18,070,762 shares of Common Stock for Shackelton. Y Y Y N CCM is the investment adviser to CCP and CCC IV, each of which is an investment limited partnership. CC is the General Partner of CCP and CCC IV. Gray and Shackelton are the managers of CC and CCM. The Reporting Persons may be deemed to be members of a group with respect to the Common Stock owned of record by CCP, CCC IV and a separate account managed by CCM (the "Separate Account"). CCP is the record owner of 12,923,136 shares of Common Stock; CCC IV is the record owner of 2,120,482 shares of Common Stock; and the Separate Account is the record owner of 3,027,144 shares of Common Stock. N N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above 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. Coliseum Capital Management, LLC /s/ Chivonne Cassar 05/15/2026 Coliseum Capital, LLC /s/ Chivonne Cassar 05/15/2026 Coliseum Capital Partners, L.P. by: Coliseum Capital, LLC, its General Partner, /s/ Chivonne Cassar 05/15/2026 Coliseum Capital Co-Invest IV, L.P. by: Coliseum Capital, LLC, its General Partner, /s/ Chivonne Cassar 05/15/2026 Adam Gray /s/ Chivonne Cassar 05/15/2026 Christopher Shackelton /s/ Chivonne Cassar 05/15/2026 Executed by Chivonne Cassar pursuant to a Power of Attorney which is incorporated herein by reference to Exhibit 24.1 to the Form 3 filed by Coliseum Capital Management, LLC on April 7, 2025.