SUMMIT PARTNERS L P - 01 Jan 2026 Form 4 Insider Report for Solo Brands, Inc. (DTCB)

Role
10%+ Owner
Signature
/s/ Adam H. Hennessey, as attorney-in-fact for Summit Partners, L.P.
Issuer symbol
DTCB
Transactions as of
01 Jan 2026
Net transactions value
$0
Form type
4
Filing time
05 Jan 2026, 16:05:05 UTC
Previous filing
10 Sep 2025
SEC
View on sec.gov

Reporting Owners (9)

Name Relationship Address Signature Signature date CIK
SUMMIT PARTNERS L P 10%+ Owner 222 BERKELEY STREET, 18TH FLOOR, BOSTON /s/ Adam H. Hennessey, as attorney-in-fact for Summit Partners, L.P. 05 Jan 2026 0000830588
Summit Partners Growth Equity Fund X-A, L.P. 10%+ Owner 222 BERKELEY STREET, 18TH FLOOR, BOSTON /s/ Adam H. Hennessey, as attorney-in-fact for Summit Partners Growth Equity Fund X-A, L.P. 05 Jan 2026 0001757901
Summit Partners Growth Equity Fund X-B, L.P. 10%+ Owner 222 BERKELEY STREET, 18TH FLOOR, BOSTON /s/ Adam H. Hennessey, as attorney-in-fact for Summit Partners Growth Equity Fund X-B, L.P. 05 Jan 2026 0001757905
Summit Partners Growth Equity Fund X-C, L.P. 10%+ Owner 222 BERKELEY STREET, 18TH FLOOR, BOSTON /s/ Adam H. Hennessey, as attorney-in-fact for Summit Partners Growth Equity Fund X-C, L.P. 05 Jan 2026 0001764048
SUMMIT INVESTORS X, LLC 10%+ Owner 222 BERKELEY STREET, 18TH FLOOR, BOSTON /s/ Adam H. Hennessey, as attorney-in-fact for Summit Partners Subordinated Debt Fund V-A, L.P. 05 Jan 2026 0001777794
SUMMIT INVESTORS X (UK), L.P. 10%+ Owner 222 BERKELEY STREET, 18TH FLOOR, BOSTON /s/ Adam H. Hennessey, as attorney-in-fact for Summit Partners Subordinated Debt Fund V-B, L.P. 05 Jan 2026 0001848077
Summit Partners Subordinated Debt Fund V-A, L.P. 10%+ Owner 222 BERKELEY STREET, 18TH FLOOR, BOSTON /s/ Adam H. Hennessey, as attorney-in-fact for Summit Investors X, LLC 05 Jan 2026 0001717868
Summit Partners Subordinated Debt Fund V-B, L.P. 10%+ Owner 222 BERKELEY STREET, 18TH FLOOR, BOSTON /s/ Adam H. Hennessey, as attorney-in-fact for Summit Investors X (UK), L.P. 05 Jan 2026 0001717713
SP-SS AGGREGATOR LLC 10%+ Owner 222 BERKELEY STREET, 18TH FLOOR, BOSTON /s/ Adam H. Hennessey, as attorney-in-fact for SP-SS Aggregator LLC 05 Jan 2026 0001889449

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SBDS Class A Common Stock, $0.001 par value per share Conversion of derivative security +354,189 +47% 1,100,870 01 Jan 2026 See Footnotes F1, F2, F3
transaction SBDS Class B Common Stock, $0.001 par value per share Other -354,189 -100% 0 01 Jan 2026 See Footnotes F1, F2, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction SBDS Common Units Conversion of derivative security $0 -354,189 -100% $0.000000 0 01 Jan 2026 Class A Common Stock 354,189 See Footnotes F1, F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On December 17, 2025, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") with its subsidiaries Solo Stove Holdings, LLC ("Holdings") and Solo Merger Sub LLC ("Merger Sub"), whereby effective January 1, 2026, Merger Sub merged with and into Holdings, with Holdings continuing as the surviving entity as a wholly owned subsidiary of the Issuer (the "Merger"). Pursuant to the Merger Agreement, on January 1, 2026, each of the issued and outstanding common membership interests in Holdings beneficially owned by members of Holdings was cancelled and converted automatically into a right to receive one share of Class A Common Stock. In addition, immediately following the effective time of the Merger, all of the issued and outstanding shares of Class B Common Stock were retired and cancelled in accordance with the Issuer's Amended and Restated Certificate of Incorporation and Holdings' Amended and Restated Limited Liability Company Agreement.
F2 Represents 282,623, 431,780, 11,657, 14,227, 5,029, 1,268, 97 and 354,189 shares of Class A Common Stock held directly by Summit Partners Growth Equity Fund X-A, L.P., Summit Partners Growth Equity Fund X-B, L.P., Summit Partners Growth Equity Fund X-C, L.P., Summit Partners Subordinated Debt Fund V-A, L.P., Summit Partners Subordinated Debt Fund V-B, L.P., Summit Investors X, LLC, Summit Investors X (UK), L.P. and SP-SS Aggregator LLC, respectively. Summit Partners, L.P. is the managing member of Summit Partners GE X, LLC, which is the general partner of Summit Partners GE X, L.P., the general partner of each of Summit Partners Growth Equity Fund X-A, L.P., Summit Partners Growth Equity Fund X-B, L.P., and Summit Partners Growth Equity Fund X-C, L.P. Summit Partners, L.P. also is the managing member of Summit Partners SD V, LLC, which is the general partner of Summit Partners SD V, L.P.,
F3 (continued from footnote 2) the general partner of each of Summit Partners Subordinated Debt Fund V-A, L.P. and Summit Partners Subordinated Debt Fund V-B, L.P. Summit Master Company, LLC is the sole managing member of Summit Investors Management, LLC, which is (A) the manager of Summit Investors X, LLC, and (B) the general partner of Summit Investors X (UK), L.P. Summit Master Company, LLC, as the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its Investment Committee. SP-SS Aggregator LLC is managed by a manager appointed by the members holding a majority of the interests of the entity, which manager is currently designated to be Summit Partners Growth Equity Fund X-A, L.P.