Solo Brands, Inc.

NOTE 21 –Net Income (Loss) Per Class A Common Stock

Basic net income (loss) per share of Class A common stock is computed by dividing net income (loss) attributable to Solo Brands, Inc. by the weighted average number of shares of Class A common stock outstanding during the period. Diluted net income (loss) per share of Class A common stock is computed by dividing net income (loss) attributable to Solo Brands, Inc. by the weighted average number of shares of Class A common stock outstanding adjusted to give effect to potentially dilutive securities.

The following table sets forth the calculation of the basic and diluted net income (loss) per share for the Company’s Class A common stock (in thousands, except per share data):

During the years ended December 31, 2025 and 2024, a nominal amount of RSUs were not included in the computation of diluted net income (loss) per share because their effect would have been anti-dilutive. The Company has determined that the performance stock units and the shares of Class B common stock would in all cases neither be dilutive nor anti-dilutive and has excluded them from the calculation of net income (loss) per Class A common stock for all periods presented.

The shares of Class B common stock and the granted PSUs are subject to contingencies that are not based on the Company’s share price or the price of the convertible instrument, as disclosed in Note 16, Equity-Based Compensation. As such, contingently convertible shares, where conversion is not tied to a market price trigger or price of the convertible instrument, are excluded from the calculation of diluted EPS until such time as the contingency has been resolved under the if-converted method. Additionally, the Company issued EPSUs that contained a market condition and would vest immediately upon satisfaction of said market condition. As a result of the immediate vesting feature, the EPSUs will in all cases be neither dilutive nor anti-dilutive. Similar to the EPSUs, the SPSUs contain a market condition. However, the SPSUs do not contain an immediate vesting feature, with vesting achieved over the requisite service period ofthree years. As such, the SPSUs, upon achievement of the market condition, will be considered for dilution or anti-dilution through the remainder of the vesting period. Until such time that the market condition is achieved, the SPSUs are considered neither dilutive nor anti-dilutive.

As of December 31, 2025, no shares of the options, EPSUs or SPSUs were considered dilutive or anti-dilutive.