X0202 SCHEDULE 13D/A 0001407029 XXXXXXXX LIVE 15 Common Stock 03/12/2026 false 0001397187 550021109 lululemon athletica inc.

1818 Cornwall Avenue Vancouver A1 V6J 1C7

Dennis J. Wilson 604-737-7232 21 Water Street Suite 600 Vancouver, British Columbia Z4 V6B 1A1 0001407029 N Dennis J. Wilson a OO N Z4 3852.00 9901004.00 3852.00 9901004.00 9904856.00 N 8.4 IN Y Anamered Investments Inc. a OO N A1 0.00 4755217.00 0.00 4755217.00 4755217.00 N 4.1 CO 0002003936 N LIPO Investments (USA), Inc. a OO N A1 0.00 3401596.00 0.00 3401596.00 3401596.00 N 2.9 CO Y Wilson 5 Foundation a OO N A1 0.00 829325.00 0.00 829325.00 829325.00 N 0.7 OO Y Wilson 5 Foundation Management Ltd. a OO N A1 0.00 829325.00 0.00 829325.00 829325.00 N 0.7 CO Y Five Boys Investments ULC a OO N A1 0.00 91760.00 0.00 91760.00 91760.00 N 0.1 OO Y Shannon Wilson a OO N Z4 0.00 1098309.00 0.00 1098309.00 1098309.00 N 0.9 IN 0001972360 N Low Tide Properties Ltd. a OO N A1 0.00 554122.00 0.00 554122.00 554122.00 N 0.5 CO Y House of Wilson Ltd. a N Z4 0.00 0.00 0.00 0.00 0.00 Y 0.0 CO Y Laura Gentile a N X1 0.00 0.00 0.00 0.00 0.00 Y 0.0 IN Y Eric Hirshberg a N X1 0.00 0.00 0.00 0.00 0.00 Y 0.0 IN Y Marc Maurer a N V8 0.00 0.00 0.00 0.00 0.00 Y 0.0 IN Common Stock lululemon athletica inc. 1818 Cornwall Avenue Vancouver A1 V6J 1C7 This Amendment No. 15 (this "Amendment") is being filed by Dennis J. Wilson, Anamered Investments Inc., LIPO Investments (USA), Inc., Wilson 5 Foundation, Wilson 5 Foundation Management Ltd., Five Boys Investments ULC, Shannon Wilson, Low Tide Properties Ltd., House of Wilson Ltd., Laura Gentile, Eric Hirshberg and Marc Maurer (collectively, the "Reporting Persons") and amends and supplements the Schedule 13D filed with the U.S. Securities and Exchange Commission (the "SEC") by the Reporting Persons on February 14, 2019 (as amended, the "Schedule 13D") to reflect certain updates to the information previously reported. The number of shares of Issuer common stock beneficially owned by the Reporting Persons has not changed since the filing of Amendment No. 14 to the Schedule 13D filed by the reporting persons thereto on March 9, 2026. The Items below amend the information disclosed under the corresponding Items in the Schedule 13D as described below. Capitalized terms used but not defined in this Amendment shall have the same meanings ascribed to them in the Schedule 13D. Except as specifically provided herein, this Amendment does not modify any of the information previously reported in the Schedule 13D. Item 4 is hereby amended and supplemented as follows: On March 12, 2026, Mr. Wilson issued a press release (the "March 12th Press Release"), a copy of which is attached as Exhibit 99.1 to this Amendment. The March 12th Press Release contains a letter addressed to potential CEO candidates of the Issuer and sets forth Mr. Wilson's views regarding the need for meaningful Board refreshment to support visionary leadership and the success of the Issuer's next CEO. The March 12th Press Release also highlights certain questions, including questions relating to Board independence, investment in innovation, and support for internal talent development, that Mr. Wilson believes that CEO candidates should consider when evaluating the leadership position. The information contained in Exhibit 99.1 of this Amendment is incorporated herein by reference. Item 7 of the Schedule 13D is hereby amended and supplemented as follows: Exhibit 99.1 Press Release Titled "Chip Wilson to lululemon CEO Candidates: Beware a Board Unfit to Support Visionary Leadership" Dennis J. Wilson /s/ Dennis J. Wilson 03/16/2026 Anamered Investments Inc. /s/ Dennis J. Wilson 03/16/2026 LIPO Investments (USA), Inc. /s/ Dennis J. Wilson 03/16/2026 Wilson 5 Foundation /s/ Dennis J. Wilson 03/16/2026 Wilson 5 Foundation Management Ltd. /s/ Dennis J. Wilson 03/16/2026 Five Boys Investments ULC /s/ Dennis J. Wilson 03/16/2026 Shannon Wilson /s/ Shannon Wilson 03/16/2026 Low Tide Properties Ltd. /s/ Dennis J. Wilson 03/16/2026 House of Wilson Ltd. /s/ Dennis J. Wilson 03/16/2026 Laura Gentile /s/ Laura Gentile 03/16/2026 Eric Hirshberg /s/ Eric Hirshberg 03/16/2026 Marc Maurer /s/ Marc Maurer 03/16/2026