X0407 4 2023-05-16 1 0001870600 Solo Brands, Inc. DTC 0001661551 BERTRAM GROWTH CAPITAL III, L.P. 950 TOWER LANE SUITE 1000 FOSTER CITY CA 94404 0 0 1 0 0 Class A Common Stock 2023-05-16 4 S 0 3277987 5.00 D 2117160 I See footnote Class A Common Stock 2023-05-16 4 S 0 1625463 5.00 D 491697 I See footnote On May 16, 2023, Bertram Growth Capital III, L.P. ("BGC III") sold 3,277,987 shares of Class A common stock (the "Class A common stock") of Solo Brands, Inc. (the "Issuer") in a registered underwritten public offering (the "Offering"), pursuant to that certain Underwriting Agreement, dated as of May 11, 2023, by and among the Issuer, Solo Stove Holdings, LLC, BGC III, the other selling stockholders named therein, and BofA Securities, Inc. and Jefferies LLC, as representatives of the other underwriters named therein. The price to the public in the Offering was $5.25 per share. The per share sale price reported in this Form 4 reflects underwriting discounts and commissions. BGC III is the direct owner of the shares of Class A common stock. Bertram Growth Capital III (GP), L.P. ("BGC III GP") is the general partner of BGC III. Bertram Growth Capital III (GPLLC), L.L.C. ("BGC III (GPLLC)") is the general partner of BGC III GP. Jeffrey M. Drazan is the manager of BGC III (GPLLC). As such, each of these entities and Mr. Drazan may be deemed to share beneficial ownership of the shares of Class A common stock held of record by BGC III. Each of BGC III GP, BGC III (GPLLC) and Mr. Drazan disclaims beneficial ownership of the shares of Class A common stock held of record by BGC III. On May 16, 2023, in connection with the closing of the Offering, BGC III sold 1,625,463 shares of Class A common stock to the Issuer, pursuant to that certain Stock Purchase Agreement, dated May 10, 2023, by and among the Issuer, BGC III and the other selling stockholders named therein, at a price of $5.00 per share. Bertram Growth Capital III, L.P., by Bertram Growth Capital III (GP), L.P., its general partner, by Bertram Growth Capital III (GPLLC), L.L.C., its general partner, by /s/ Jeffrey M. Drazan, Manager 2023-05-17