STOCK TITAN

Cynosure Group takes 52.6% control stake in Black Rock (BRCB)

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
SCHEDULE 13D

Rhea-AI Filing Summary

Cynosure Group and its affiliated funds have disclosed a controlling stake in Black Rock Coffee Bar, Inc. (BRCB) on a Schedule 13D. They report beneficial ownership of 21,831,316 shares of Class A Common Stock, representing 52.6% of the class, including shares issuable upon conversion of LLC Units.

On May 15, 2026, Cynosure Partners III, LP bought 12,042,712 LLC Units, an equal number of Class C (now Class B) shares, and 1,600,000 Class A shares for a total of $72,973,697.44, paying off a margin loan tied to these securities. Cynosure has the right to designate one director (the Cynosure Nominee), a board observer and, while it owns at least 7.5% of the stock, influence key decisions such as board size, leverage above a 2.0 net debt ratio, CEO termination and director compensation changes.

Positive

  • None.

Negative

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Insights

Cynosure now holds a controlling stake with board rights at BRCB.

Cynosure Group and related funds report beneficial ownership of 52.6% of Black Rock Coffee Bar’s Class A Common Stock, including shares issuable from LLC Units. A purchase on May 15, 2026 totaling $72,973,697.44 consolidated this position and removed a margin loan overhang.

Cynosure obtained structural rights: a designated director, a board observer and vetoes over certain actions, such as increasing board size above nine directors or incurring leverage beyond a 2.0 net debt ratio. The tax receivable and registration rights agreements, along with expanded demand registrations, shape future liquidity for Cynosure while embedding it as a long-term, influential sponsor shareholder.

Beneficial ownership 21,831,316 shares Class A Common Stock beneficially owned by Cynosure group
Ownership percentage 52.6% Percent of Class A Common Stock represented by Cynosure’s holdings
Purchase price $72,973,697.44 Aggregate price for LLC Units, Class C and Class A shares on May 15, 2026
LLC Units acquired 12,042,712 LLC Units LLC Units of Black Rock Coffee Holdings acquired by Cynosure Partners III, LP
Class A shares acquired 1,600,000 shares Class A Common Stock purchased by Cynosure Partners III, LP
Class A conversion notice 119,892 shares Class A shares issued upon conversion of an equal number of LLC Units
Board leverage threshold 2.0 net debt leverage ratio Higher board approval requirement for indebtedness above this level
Nomination threshold 7.5% Minimum collective ownership for Cynosure to retain director nomination rights
Schedule 13D regulatory
"The Reporting Persons were initially eligible to file a Schedule 13G under Rule 13d-1(d)... and are now filing this Statement."
A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.
LLC Units financial
"12,042,712 LLC Units and an equal number of shares of Class C Common Stock..."
LLC units are ownership stakes in a limited liability company, similar to shares in a corporation; each unit represents a portion of the company’s profits, losses and often voting power. For investors, LLC units matter because they determine how much money and control someone gets, how easily an interest can be sold, and how income is taxed and reported — think of owning slices of a pie that also decide how the pie is cut and shared.
Tax Receivable Agreement financial
"a tax receivable agreement (the "Tax Receivable Agreement"), pursuant to which the Issuer is required to make cash payments..."
A contract in which a company agrees to pay a specified party (often former owners after a spinoff or IPO) a share of future tax savings the company realizes. Think of it like agreeing to share a future tax refund with someone who helped create the conditions for that refund. For investors it matters because those payments reduce the cash the company can use for dividends, buybacks, or reinvestment, and therefore affect valuation and returns.
Registration Rights Agreement financial
"a registration rights agreement (the "Registration Rights Agreement"), which provides the Reporting Persons with certain demand registration rights..."
A registration rights agreement is a contract that gives investors the option to have their ownership stakes officially registered with the government, making it easier to sell their shares later. This agreement matters because it provides investors with a clearer path to cash out their investments if they choose, offering more liquidity and confidence in their ability to sell their holdings when desired.
Margin Loan Agreement financial
"the Margin Loan due under a Margin Loan Agreement between the sellers and JPMorgan Chase Bank, N.A."
Cynosure Nominee financial
"The Reporting Persons have designated Andrew Braithwaite... as the Cynosure Nominee..."





092244102

(CUSIP Number)
Emily M. Teran
c/o Cynosure Group, LLC, 111 S. Main Street, Suite 2350
Salt Lake City, UT, 84111
801-521-3100

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)
05/15/2026

(Date of Event Which Requires Filing of This Statement)


If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




schemaVersion:


SCHEDULE 13D




Comment for Type of Reporting Person:
The number in Rows (8), (10) and (11) consists of (a) 2,035,904 shares of Class A Common Stock, comprised of (i) 1,916,012 shares of Class A Common Stock held by Cynosure Partners III Offshore, LP and (ii) 119,892 shares of Class A Common Stock held by Cynosure Partners III, LP and (b) 19,795,412 shares of Class A Common Stock issuable upon the conversion of an equal number of limited liability company units ("LLC Units") of Black Rock Coffee Holdings, LLC, a Delaware limited liability company and subsidiary of the Issuer, on a one-for-one basis, and forfeiture of a corresponding number of shares of Class B Common Stock, comprised of (i) 3,514,041 shares of Class B Common Stock held by Cynosure Partners 2020, LP, (ii) 260,660 shares of Class B Common Stock held by Cynosure Partners 2020 PV, LP, (iii) 660,106 shares of Class B Common Stock held by Cynosure Partners 2020 Co-Investment, LLC (for and on behalf of Series A members), (iv) 1,247,093 shares of Class B Common Stock held by Cynosure Partners 2020 Co-Investment, LLC (for and on behalf of Series B members), and (v) 14,113,512 shares of Class B Common Stock held by Cynosure Partners III, LP. The Cynosure Group, LLC, is the manager for, and has sole voting and investment power with respect to, the shares of Class A and Class B Common Stock held by the Reporting Persons. The percentage in Row (13) is calculated assuming 21,692,785 shares of Class A common stock outstanding plus 19,795,412 shares of Class A common stock issuable in respect of an equivalent number of LLC Units and shares of Class B Common Stock held by the Reporting Persons.


SCHEDULE 13D




Comment for Type of Reporting Person:
The percentage in Row (13) is calculated assuming 21,692,785 shares of Class A Common Stock outstanding plus 3,514,041 shares of Class A common stock issuable in respect of an equivalent number of LLC Units and shares of Class B Common Stock held by Cynosure Partners 2020, LP.


SCHEDULE 13D




Comment for Type of Reporting Person:
The percentage in Row (13) is calculated assuming 21,692,785 shares of Class A Common Stock outstanding plus 260,660 shares of Class A common stock issuable in respect of an equivalent number of LLC Units and shares of Class B Common Stock held by Cynosure Partners 2020 PV, LP.


SCHEDULE 13D




Comment for Type of Reporting Person:
The percentage in Row (13) is calculated assuming 21,692,785 shares of Class A Common Stock outstanding plus 660,106 shares of Class A common stock issuable in respect of an equivalent number of LLC Units and shares of Class B Common Stock held by Cynosure Partners 2020 Co-Investment, LLC for and on behalf of Series A members.


SCHEDULE 13D




Comment for Type of Reporting Person:
The percentage in Row (13) is calculated assuming 21,692,785 shares of Class A Common Stock outstanding plus 1,247,093 shares of Class A common stock issuable in respect of an equivalent number of LLC Units and shares of Class B Common Stock held by Cynosure Partners 2020 Co-Investment, LLC for and on behalf of Series B members.


SCHEDULE 13D




Comment for Type of Reporting Person:
The percentage in Row (13) is calculated assuming 21,692,785 shares of Class A Common Stock outstanding plus 14,113,512 shares of Class A Common Stock issuable in respect of an equivalent number of LLC Units and shares of Class B Common Stock held by Cynosure Partners III, LP.


SCHEDULE 13D




Comment for Type of Reporting Person:
The percentage in Row (13) is calculated assuming 21,692,785 shares of Class A Common Stock outstanding.


SCHEDULE 13D


Cynosure Group, LLC
Signature:Andrew Braithwaite
Name/Title:Authorized Signatory
Date:05/21/2026
Cynosure Partners 2020, LP
Signature:Andrew Braithwaite
Name/Title:Authorized Signatory
Date:05/21/2026
Cynosure Partners 2020 PV, LP
Signature:Andrew Braithwaite
Name/Title:Authorized Signatory
Date:05/21/2026
Cynosure Partners 2020 Co-investment, LLC (for and on behalf of Series A members)
Signature:Andrew Braithwaite
Name/Title:Authorized Signatory
Date:05/21/2026
Cynosure Partners 2020 Co-Investment, LLC (for and on behalf of Series B members)
Signature:Andrew Braithwaite
Name/Title:Authorized Signatory
Date:05/21/2026
Cynosure Partners III, LP
Signature:Andrew Braithwaite
Name/Title:Authorized Signatory
Date:05/21/2026
Cynosure Partners III Offshore, LP
Signature:Andrew Braithwaite
Name/Title:Authorized Signatory
Date:05/21/2026

FAQ

How much of Black Rock Coffee Bar (BRCB) does Cynosure now beneficially own?

Cynosure Group and its affiliated funds report beneficial ownership of 21,831,316 shares of Class A Common Stock, representing 52.6% of the class. This total includes shares issuable upon conversion of LLC Units and related Class B/Common interests.

What transaction triggered Cynosure’s Schedule 13D filing in Black Rock Coffee Bar (BRCB)?

On May 15, 2026, Cynosure Partners III, LP bought 12,042,712 LLC Units, an equal number of Class C shares, and 1,600,000 Class A shares for $72,973,697.44. This pushed Cynosure’s purchases above a 2% threshold over 12 months, requiring a Schedule 13D.

What governance rights does Cynosure have at Black Rock Coffee Bar (BRCB)?

As long as the group collectively holds at least 7.5% of outstanding common stock, Cynosure can designate one director, appoint a nonvoting board observer, and influence certain board actions, including leverage decisions and CEO termination thresholds, under the company’s formation documents.

How many Black Rock Coffee Bar (BRCB) shares were outstanding for Cynosure’s ownership calculations?

Ownership percentages are based on 21,572,893 shares of Class A Common Stock outstanding as of May 11, 2026, plus 119,892 newly issued Class A shares and, where applicable, additional Class A shares issuable upon LLC Unit conversions held by each reporting fund.

What happened to the margin loan tied to Black Rock Coffee Bar (BRCB) securities?

The $72,973,697.44 purchase price reflected the notional amount, accrued interest and make-whole on a margin loan owed to JPMorgan Chase Bank. After Cynosure’s acquisition, the margin loan was paid off in full and the pledged Black Rock securities were released as collateral.

What key agreements affect Cynosure’s investment in Black Rock Coffee Bar (BRCB)?

Cynosure is party to a Tax Receivable Agreement, a Registration Rights Agreement (recently amended to allow four demand registrations), a Seventh Amended LLC Agreement for Black Rock OpCo, and the Purchase and Assignment Agreement executed on May 15, 2026.