Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * MACKOVAK BENJAMIN 2. Issuer Name and Ticker or Trading Symbol FIRSTSUN CAPITAL BANCORP [FSUN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 1400 16TH STREET, SUITE 250 3. Date of Earliest Transaction (Month/Day/Year) 04/01/2026 (Street) DENVER, CO 80202 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, $0.0001 par value 04/01/2026 A 2,140 A (1) 2,140 D Common Stock, $0.0001 par value 04/01/2026 A 1,151,160 A (2) 1,151,160 I Owned directly by Strategic Value Investors LP(3)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MACKOVAK BENJAMIN 1400 16TH STREET SUITE 250 DENVER, CO 80202	X

Signatures

/s/ Kelly C. Rackley, by power of attorney		04/02/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Received in exchange for 13,308 unvested restricted stock units ("RSUs") of First Foundation Inc. ("First Foundation") that were assumed by FirstSun Capital Bancorp ("FirstSun") and replaced with RSUs of FirstSun, in connection with the merger of First Foundation with and into FirstSun. Each unvested RSU of First Foundation was converted into an RSU of FirstSun with respect to FirstSun common stock, based on the exchange ratio in the merger of 0.16083 of a share of FirstSun common stock for each share of First Foundation common stock.
(2)	Received in exchange for (a) 6,768,343 shares of First Foundation common stock and (b) 389.28296 shares of First Foundation Series C non-voting common equity equivalent stock (the "Series C stock"), each in connection with the merger. Each share of Series C stock converted into the right to receive a number of shares of FirstSun common stock equal to the number of shares of First Foundation common stock that such share was convertible into immediately prior to the effective time of the merger, multiplied by the exchange ratio of 0.16083. Each share of First Foundation common stock converted into the right to receive 0.16083 of a share of FirstSun common stock, with cash paid in lieu of fractional shares. On the last trading day before the effective date of the merger, the closing price of First Foundation common stock was $5.90 per share, and the closing price of FirstSun common stock was $36.46 per share.
(3)	Owned directly by Strategic Value Investors LP. The reporting person, solely by virtue of his position as a managing member of Strategic Value Bank Partners LLC, which serves as the general partner of Strategic Value Investors LP, may be deemed to beneficially own the shares owned by Strategic Value Investors LP for purposes of Section 16. The reporting person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

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