8-K: FirstSun Grants Board Seat to Castle Creek Capital

FirstSun Capital Bancorp has entered into an agreement with Castle Creek Capital Partners IX, LP, granting them a board representative seat and observer rights following a $40 million equity investment.

Summary

• FirstSun Capital Bancorp (FSUN) entered into a Board Representative Letter Agreement with Castle Creek Capital Partners IX, LP on December 3, 2025.
• Castle Creek Capital managed funds acquired $40 million of common stock in FirstSun Capital Bancorp from legacy stockholders.
• Castle Creek is now one of FirstSun's largest institutional stockholders, with approximately 4% ownership as of December 4, 2025.
• The agreement grants Castle Creek the right to designate an individual (the Board Representative), Spencer T. Cohn, for nomination to FirstSun's board of directors.
• This right commences upon the earlier of the closing of FirstSun's proposed merger with First Foundation Inc. or the 2026 Annual Meeting of Stockholders.
• Castle Creek's right to designate a Board Representative continues as long as they, with affiliates, own at least 40% of the total shares held by Castle Creek as of December 3, 2025 (Minimum Ownership Interest).
• If Castle Creek does not have a board representative currently serving, they may appoint a non-voting observer to the board.
• The Board Representative will receive compensation, indemnification, insurance coverage, and expense reimbursement equivalent to other directors.
• Isabella Cunningham announced her resignation as a director, effective upon the earlier of the Proposed Merger Closing or the 2026 Annual Meeting, to accommodate the new board nominee.
• FirstSun does not anticipate reducing the board size, intending to maintain it to accommodate Castle Creek's nominee.

Sentiment

Score: 8

Explanation: The filing details a significant strategic investment by a specialized financial services firm, Castle Creek Capital, which is taking an active governance role. This investment validates FirstSun's proposed merger and strategic direction, with management and the investor expressing strong confidence in future performance and value creation.

Positives

• Strategic partnership with Castle Creek Capital, a specialized alternative asset management firm focused on the financial services sector.
• Castle Creek Capital's $40 million equity investment from legacy stockholders demonstrates significant institutional confidence in FirstSun's strategy and proposed merger with First Foundation Inc.
• Castle Creek Capital's Managing Principal, Tony Scavuzzo, expressed strong conviction in FirstSun's management team and their plan to drive substantial value creation for stockholders.
• The proposed merger with First Foundation Inc. is expected to substantially improve FirstSun's performance and reduce credit and liquidity risk due to complementary business mix and pristine asset quality.
• Anticipated enhanced pro forma run-rate and more durable earnings stream post-merger are expected to present significant upside for stockholders.
• Castle Creek's investment and board representation validate the merits of the merger and FirstSun's overall strategy.

Risks

• Failure to obtain necessary regulatory approvals for the merger when expected or at all, or the imposition of conditions that could adversely affect the combined company or expected benefits.
• Failure of First Foundation or FirstSun to obtain required stockholder approval for the merger, or failure of either party to satisfy other closing conditions on a timely basis or at all.
• Occurrence of any event, change, or circumstances that could give rise to the right of one or both parties to terminate the merger agreement.
• The proposed transaction, including the balance sheet re-positioning strategy, may not be completed as planned, or the anticipated benefits may not be realized.
• Changes in global financial markets and economies and general market conditions, such as interest rates, foreign exchange rates, or stock, commodity, credit or asset valuations or volatility.
• Diversion of management's attention from ongoing business operations and opportunities due to the merger.
• Potential adverse reactions or changes to business or employee relationships resulting from the announcement or completion of the proposed transaction.
• The outcome of any legal proceedings that may be instituted against FirstSun or First Foundation.
• Cost savings and synergies expected from the proposed transaction may not be realized or may take longer than anticipated.
• Integration of FirstSun's and First Foundation's respective businesses may be materially delayed or more costly or difficult than expected.
• Changes to tax legislation and their potential effects on the accounting for the merger.
• Possibility of dilution to existing stockholders resulting from the issuance of additional shares in connection with the proposed transaction.
• Possibility that the combined company may be subject to additional regulatory requirements as a result of the merger or expansion of its business operations.
• Changes in asset quality and credit risk; inability to sustain revenue and earnings growth; changes in interest rates and capital markets; inflation.
• Customer borrowing, repayment, investment and deposit practices; the impact, extent and timing of technological changes; capital management activities.
• Actions of the Federal Reserve Board and legislative and regulatory actions and reforms.

Future Outlook

FirstSun expects to cause an individual designated by Castle Creek Capital to be elected or appointed to its board of directors upon the earlier of the closing of the proposed merger with First Foundation Inc. or the 2026 Annual Meeting. The proposed merger is anticipated to substantially improve FirstSun's performance, reduce credit and liquidity risk, and lead to enhanced pro forma run-rate and more durable earnings. The company intends to maintain the current board size to accommodate the new board nominee.

Management Comments

• Spencer T. Cohn (Director at Castle Creek Capital): "The merger with First Foundation plays to CEO Neal Arnold's and CFO Rob Cafera's demonstrated strengths given the balance sheet re-positioning required to unlock First Foundation's underlying core franchise. This combination allows management to substantially improve the Company's already top-tier performance and also reduce its credit and liquidity risk profile given the complementary business mix and pristine asset quality at First Foundation. More importantly, we believe FirstSun's enhanced pro forma run-rate and more durable earnings stream presents significant upside for stockholders today."
• Neal Arnold (CEO and President of FirstSun): "Working with sophisticated and experienced investors who share our values and drive for stockholder return continues to be a top priority for our team. Castle Creek is well-known to us, and we are thrilled to partner with them again as we expand our franchise and geographic reach. Castle Creek is one of the most reputable investors in the industry with a strong cultural fit with our team, and we believe their continued support validates the merits of the merger and our strategy. We look forward to continuing to work collaboratively with Castle Creek."
• Mollie Carter (Executive Chairman of FirstSun): "As FirstSun has built a high quality, specialty bank on the foundation of our customer-centric community banking values, we have relied upon investors who understand the sector and what differentiates us to help fuel our growth. We are pleased to have Castle Creek formally join those ranks, and we look forward to their continued support and contributions into this next chapter of our story."
• Tony Scavuzzo (Managing Principal at Castle Creek Capital): "FirstSun's impressive leadership team has built a remarkable organization, and we are thrilled to continue our partnership with the Company. CEO Neal Arnold, CFO Rob Cafera and the entire FirstSun team are highly focused on continuing to deliver a best-in-class regional bank, as evidenced by the Company's consistent, industry-leading profitability and growth. Our longstanding relationship with this proven management team solidifies our conviction in the Company's plan to drive substantial value creation for stockholders. We look forward to continued collaboration with the Company."

Industry Context

Castle Creek Capital specializes in the community banking industry, indicating a strategic investment aligned with their expertise. The investment and board representation suggest a trend of institutional investors taking active roles in the governance and strategic direction of financial institutions, particularly those undergoing significant corporate actions like mergers. The focus on "balance sheet re-positioning" and "reducing credit and liquidity risk" reflects broader industry challenges and strategic priorities in the banking sector.

Comparison to Industry Standards

• Castle Creek Capital is a leading investor in community banking since 1990, having raised and managed nine private equity funds and multiple special situations funds, indicating a high level of industry expertise and a benchmark for strategic investments in the sector.
• FirstSun's management team is described by Castle Creek as "highly focused on continuing to deliver a best-in-class regional bank," with "consistent, industry-leading profitability and growth," suggesting performance above industry averages.
• The proposed merger with First Foundation Inc. is expected to "substantially improve the Company's already top-tier performance" and "reduce its credit and liquidity risk profile," implying a strategic move to further differentiate or strengthen its position relative to peers.

Management Changes

Corporate Governance

Stakeholder Impact

• Shareholders: Potential for increased value creation due to strategic partnership, validated merger strategy, and enhanced governance. Dilution risk mentioned in forward-looking statements related to the merger.
• Management: Collaboration with a sophisticated investor, potential for strategic guidance, and validation of current leadership.
• Employees: No direct impact mentioned, but successful merger and strategic direction could lead to stability or growth opportunities.
• Customers/Suppliers/Creditors: No direct impact mentioned, but a stronger, more stable bank post-merger could benefit these groups indirectly.

Next Steps

• Closing of FirstSun's proposed merger with First Foundation Inc.
• 2026 Annual Meeting of FirstSun's Stockholders.
• Election or appointment of Castle Creek's designated Board Representative (Spencer T. Cohn) to FirstSun's board of directors.
• FirstSun will recommend the election of the Board Representative to its stockholders.
• FirstSun will continue to work collaboratively with Castle Creek Capital.

Key Dates

Recommendation

The strategic investment by Castle Creek Capital, a specialized financial services investor, coupled with their board representation, signals strong institutional confidence in FirstSun's strategic direction and the merits of its proposed merger with First Foundation Inc. Management's and Castle Creek's comments highlight expectations for improved performance, reduced risk, and significant stockholder upside post-merger. The company's claims of consistent, industry-leading profitability and growth, validated by a reputable investor, suggest a positive outlook for the stock.

Keywords

FirstSun Capital Bancorp, Castle Creek Capital, Board Representative, Merger, First Foundation Inc., Equity Investment, Financial Services, Banking, Corporate Governance, SEC Filing, FSUN