EX-4.2




 Exhibit 4.2 

CAPSTAR FINANCIAL HOLDINGS, INC. 

5.25% FIXED-TO-FLOATING RATE SUBORDINATED NOTE DUE 2030

 THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES
ACT”), OR SECURITIES LAWS OF ANY STATE AND MAY NOT BE TRANSFERRED, SOLD OR OTHERWISE DISPOSED OF EXCEPT (A) PURSUANT TO, AND IN ACCORDANCE WITH, A REGISTRATION STATEMENT THAT IS EFFECTIVE UNDER THE SECURITIES ACT AT THE TIME OF SUCH
TRANSFER; (B) TO A PERSON THAT YOU REASONABLY BELIEVE TO BE A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT OR TO A PERSON THAT YOU REASONABLY BELIEVE TO BE AN INSTITUTIONAL ACCREDITED INVESTOR AS DEFINED
IN RULE 501(A)(1), (2), (3) OR (7) OF REGULATION D UNDER THE SECURITIES ACT; OR (C) UNDER ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT (INCLUDING, IF AVAILABLE, THE EXEMPTION PROVIDED BY RULE 144
UNDER THE SECURITIES ACT). 
 THE SECURITY AND THE OBLIGATIONS OF THE COMPANY AS EVIDENCED BY THIS SUBORDINATED NOTE (1) ARE NOT A DEPOSIT AND ARE NOT
INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION OR ANY OTHER GOVERNMENT AGENCY OR FUND AND (2) ARE SUBORDINATE IN THE RIGHT OF PAYMENT TO ALL SENIOR INDEBTEDNESS (AS DEFINED IN THE INDENTURE IDENTIFIED HEREIN). 

CERTAIN ERISA CONSIDERATIONS: 
 THE HOLDER OF THIS
SUBORDINATED NOTE, OR ANY INTEREST HEREIN, BY ITS ACCEPTANCE HEREOF OR THEREOF AGREES, REPRESENTS AND WARRANTS THAT IT IS NOT AN EMPLOYEE BENEFIT PLAN, INDIVIDUAL RETIREMENT ACCOUNT OR OTHER PLAN OR ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE
RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED (“ERISA”), OR SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE “CODE”) (EACH A “PLAN”), OR AN ENTITY WHOSE UNDERLYING ASSETS
INCLUDE “PLAN ASSETS” BY REASON OF ANY PLAN’S INVESTMENT IN THE ENTITY, AND NO PERSON INVESTING “PLAN ASSETS” OF ANY PLAN MAY ACQUIRE OR HOLD THIS SUBORDINATED NOTE OR ANY INTEREST HEREIN, UNLESS SUCH PURCHASER OR HOLDER IS
ELIGIBLE FOR THE EXEMPTIVE RELIEF AVAILABLE UNDER U.S. DEPARTMENT OF LABOR PROHIBITED TRANSACTION CLASS EXEMPTION 96-23, 95-60,
91-38, 90-1 OR 84-14 OR ANOTHER APPLICABLE EXEMPTION OR ITS PURCHASE AND HOLDING OF THIS SUBORDINATED NOTE, OR ANY INTEREST
HEREIN, ARE NOT PROHIBITED BY SECTION 406 OF ERISA OR SECTION 4975 OF THE CODE WITH RESPECT TO SUCH PURCHASE AND HOLDING. ANY PURCHASER OR HOLDER OF THIS SUBORDINATED NOTE OR ANY INTEREST HEREIN WILL BE DEEMED TO HAVE REPRESENTED BY ITS PURCHASE AND
HOLDING THEREOF THAT EITHER: (i) IT IS NOT AN EMPLOYEE BENEFIT PLAN OR OTHER PLAN TO WHICH TITLE I OF ERISA OR SECTION 4975 OF THE CODE IS APPLICABLE, A TRUSTEE OR OTHER PERSON ACTING ON BEHALF OF ANY SUCH EMPLOYEE BENEFIT PLAN OR PLANS, OR ANY
OTHER PERSON OR ENTITY USING THE “PLAN ASSETS” OF ANY SUCH EMPLOYEE BENEFIT PLAN OR PLAN TO FINANCE SUCH PURCHASE OR (ii) SUCH PURCHASE OR HOLDING WILL NOT RESULT IN A PROHIBITED TRANSACTION UNDER SECTION 406 OF ERISA OR SECTION 4975
OF THE CODE FOR WHICH FULL EXEMPTIVE RELIEF IS NOT AVAILABLE UNDER APPLICABLE STATUTORY OR ADMINISTRATIVE EXEMPTION. 











 ANY FIDUCIARY OF ANY PLAN WHO IS CONSIDERING THE ACQUISITION OF THIS SUBORDINATED NOTE OR ANY INTEREST
HEREIN SHOULD CONSULT WITH HIS OR HER LEGAL COUNSEL PRIOR TO ACQUIRING THIS SUBORDINATED NOTE OR ANY INTEREST HEREIN. 












			
	No. [●]	  	Accredited Investor CUSIP / ISIN: 14070T AB8 / US14070TAB89
		  	QIB CUSIP / ISIN: 14070T AA0 / US14070TAA07

 CAPSTAR FINANCIAL HOLDINGS, INC. 

5.25% FIXED-TO-FLOATING RATE SUBORDINATED NOTE DUE 2030 

1. Subordinated Notes. This Subordinated Note is one of a duly authorized issue of notes of CapStar Financial Holdings,
Inc., a Tennessee corporation (the “Company”), designated as the “5.25% Fixed-to-Floating Rate Subordinated Notes due 2030” (the
“Subordinated Notes”) in an aggregate principal amount of $30,000,000 and initially issued on June 29, 2020. The Company has issued this Subordinated Note under that certain Indenture dated as of June 29, 2020, as the same
may be amended or supplemented from time to time (“Indenture”), between the Company and UMB Bank, National Association, as Trustee (the “Trustee”). All capitalized terms not otherwise defined in this Subordinated
Note will have the meanings assigned to them in the Indenture. The terms of this Subordinated Note include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended (the
“Trust Indenture Act”). This Subordinated Note is subject to all such terms, and the Holder (as defined below) is referred to the Indenture and the Trust Indenture Act for a statement of such terms. To the extent any provision of
this Subordinated Note irreconcilably conflicts with the express provisions of the Indenture, the provisions of the Indenture will govern and be controlling. 

2. Payment. The Company, for value received, promises to pay to [•] (the “Holder”), or its
registered assigns, the principal sum of [•] Dollars (U.S.) ($[•],000,000), plus accrued but unpaid interest on June 30, 2030 (the “Maturity Date”) and to pay interest thereon (i) from and including the original
issue date of the Subordinated Notes to but excluding June 30, 2025 or the earlier redemption date contemplated by Section 4 (Redemption) of this Subordinated Note (the “Fixed Rate Period”), at the
rate of 5.25% per annum, computed on the basis of a 360-day year consisting of twelve 30-day months and payable semi-annually in arrears on June 30 and
December 30 of each year (each payment date, a “Fixed Interest Payment Date”), beginning December 30, 2020, and (ii) from and including June 30, 2025 to but excluding the Maturity Date or earlier redemption date
contemplated by Section 4 (Redemption) of this Subordinated Note (the “Floating Rate Period”), at the rate per annum, reset quarterly, equal to the Floating Interest Rate (as defined below) determined on
the Floating Interest Determination Date (as defined below) of the applicable interest period plus 513 basis points, computed on the basis of a 360-day year and the actual number of days elapsed and payable
quarterly in arrears (each quarterly period a “Floating Interest Period”) on March 30, June 30, September 30 and December 30 of each year (each payment date, a “Floating Interest Payment Date”).
Dollar amounts resulting from this calculation shall be rounded to the nearest cent, with one-half cent being rounded up. The term “Floating Interest Determination Date” means the date upon
which the Floating Interest Rate is determined by the Calculation Agent pursuant to the Three-Month Term SOFR Conventions (as defined below). 

(a) An “Interest Payment Date” is either a Fixed Interest Payment Date or a Floating Interest Payment Date, as applicable.

 (b) The “Floating Interest Rate” means: 

(i) initially Three-Month Term SOFR (as defined below). 

(ii) Notwithstanding the foregoing clause (i) of this Section 2(b): 











 (1) If the Calculation Agent (as defined below) determines prior to the relevant Floating
Interest Determination Date that a Benchmark Transition Event and its related Benchmark Replacement Date (each of such terms as defined below) have occurred with respect to Three-Month Term SOFR, then the Company shall promptly provide notice of
such determination to the Holders and Section 2(c) (Effect of Benchmark Transition Event) will thereafter apply to all determinations, calculations and quotations made or obtained for the purposes of calculating the
Floating Interest Rate payable on the Subordinated Notes during a relevant Floating Interest Period. 
 (2) However, if the Calculation
Agent determines that a Benchmark Transition Event and its related Benchmark Replacement Date have occurred with respect to Three-Month Term SOFR, but for any reason the Benchmark Replacement has not been determined as of the relevant Floating
Interest Determination Date, the Floating Interest Rate for the applicable Floating Interest Period will be equal to the Floating Interest Rate on the last Floating Interest Determination Date for the Subordinated Notes, as determined by the
Calculation Agent. 
 (iii) If the then-current Benchmark is Three-Month Term SOFR and any of the foregoing provisions concerning the
calculation of the interest rate and the payment of interest during the Floating Rate Period are inconsistent with any of the Three-Month Term SOFR Conventions determined by the Company, then the relevant Three-Month Term SOFR Conventions will
apply. 
 (c) Effect of Benchmark Transition Event. 

(i) If the Calculation Agent determines that a Benchmark Transition Event and its related Benchmark Replacement Date have occurred prior to
the Reference Time (as defined below) in respect of any determination of the Benchmark (as defined below) on any date, the Benchmark Replacement will replace the then-current Benchmark for all purposes relating to the Subordinated Notes during the
relevant Floating Interest Period in respect of such determination on such date and all determinations on all subsequent dates. 
 (ii) In
connection with the implementation of a Benchmark Replacement, the Company will have the right to make Benchmark Replacement Conforming Changes from time to time. 

(iii) Any determination, decision or election that may be made by the Company or by the Calculation Agent pursuant to the benchmark
transition provisions set forth herein, including any determination with respect to a tenor, rate or adjustment or of the occurrence or non-occurrence of an event, circumstance or date, and any decision to
take or refrain from taking any action or any selection: 
 (1) will be conclusive and binding absent manifest error; 

(2) if made by the Company, will be made in the Company’s sole discretion; 

(3) if made by the Calculation Agent, will be made after consultation with the Company, and the Calculation Agent will not make any such
determination, decision or election to which the Company reasonably objects; and 
 (4) notwithstanding anything to the contrary in this
Subordinated Note, the Indenture or the Purchase Agreement, shall become effective without consent from the relevant Holders or any other party. 

(iv) For the avoidance of doubt, after a Benchmark Transition Event and its related Benchmark Replacement Date have occurred, interest
payable on this Subordinated Note for the Floating Rate Period will be an annual rate equal to the sum of the applicable Benchmark Replacement and the spread specified on the face hereof. 











 (v) As used in this Subordinated Note: 

(1) “Benchmark” means, initially, Three-Month Term SOFR; provided that if a Benchmark Transition Event and its related
Benchmark Replacement Date have occurred with respect to Three-Month Term SOFR or the then-current Benchmark, then “Benchmark” means the applicable Benchmark Replacement. 

(2) “Benchmark Replacement” means the Interpolated Benchmark with respect to the then-current Benchmark, plus the Benchmark
Replacement Adjustment for such Benchmark; provided that if (a) the Calculation Agent cannot determine the Interpolated Benchmark as of the Benchmark Replacement Date or (b) the then-current Benchmark is Three-Month Term SOFR and a
Benchmark Transition Event and its related Benchmark Replacement Date have occurred with respect to Three-Month Term SOFR (in which event no Interpolated Benchmark with respect to Three-Month Term SOFR shall be determined), then “Benchmark
Replacement” means the first alternative set forth in the order below that can be determined by the Calculation Agent, as of the Benchmark Replacement Date: 

a. Compounded SOFR; 
 b. the
sum of: (i) the alternate rate of interest that has been selected or recommended by the Relevant Governmental Body as the replacement for the then-current Benchmark for the applicable Corresponding Tenor and (ii) the Benchmark Replacement
Adjustment; 
 c. the sum of: (i) the ISDA Fallback Rate and (ii) the Benchmark Replacement Adjustment; 

d. the sum of: (i) the alternate rate of interest that has been selected by the Company as the replacement for the then-current
Benchmark for the applicable Corresponding Tenor giving due consideration to any industry-accepted rate of interest as a replacement for the then-current Benchmark for U.S. dollar denominated floating rate notes at such time and (ii) the
Benchmark Replacement Adjustment. 
 (3) “Benchmark Replacement Adjustment” means the first alternative set forth in the
order below that can be determined by the Calculation Agent, as of the Benchmark Replacement Date: 
 a. the spread adjustment, or method
for calculating or determining such spread adjustment, (which may be a positive or negative value or zero) that has been selected or recommended by the Relevant Governmental Body for the applicable Unadjusted Benchmark Replacement; 

b. if the applicable Unadjusted Benchmark Replacement is equivalent to the ISDA Fallback Rate, then the ISDA Fallback Adjustment; 

c. the spread adjustment (which may be a positive or negative value or zero) that has been selected by the Company giving due consideration
to any industry-accepted spread adjustment, or method for calculating or determining such spread adjustment, for the replacement of the then-current Benchmark with the applicable Unadjusted Benchmark Replacement for U.S. dollar denominated floating
rate notes at such time. 











 (4) “Benchmark Replacement Conforming Changes” means, with respect to any
Benchmark Replacement, any technical, administrative or operational changes (including changes to the definition of “Floating Interest Period,” timing and frequency of determining rates with respect to each Floating Interest Period
and making payments of interest, rounding of amounts or tenors and other administrative matters) that the Company decides may be appropriate to reflect the adoption of such Benchmark Replacement in a manner substantially consistent with market
practice (or, if the Company decides that adoption of any portion of such market practice is not administratively feasible or if the Company determines that no market practice for use of the Benchmark Replacement exists, in such other manner as the
Company determines is reasonably necessary). 
 (5) “Benchmark Replacement Date” means the earliest to occur of the
following events with respect to the then-current Benchmark: 
 a. in the case of clause (a) of the definition of “Benchmark
Transition Event,” the relevant Reference Time in respect of any determination; 
 b. in the case of clause (b) or
(c) of the definition of “Benchmark Transition Event,” the later of (i) the date of the public statement or publication of information referenced therein and (ii) the date on which the administrator of the Benchmark
permanently or indefinitely ceases to provide the Benchmark; or 
 c. in the case of clause (d) of the definition of
“Benchmark Transition Event,” the date of such public statement or publication of information referenced therein. 
 For
the avoidance of doubt, if the event giving rise to the Benchmark Replacement Date occurs on the same day as, but earlier than, the Reference Time in respect of any determination, the Benchmark Replacement Date will be deemed to have occurred prior
to the Reference Time for purposes of such determination. 
 (6) “Benchmark Transition Event” means the occurrence of one
or more of the following events with respect to the then-current Benchmark: 
 a. if the Benchmark is Three-Month Term SOFR, (i) the
Relevant Governmental Body has not selected or recommended a forward-looking term rate for a tenor of three months based on SOFR, (ii) the development of a forward-looking term rate for a tenor of three months based on SOFR that has been
recommended or selected by the Relevant Governmental Body is not complete or (iii) the Company determines that the use of a forward-looking rate for a tenor of three months based on SOFR is not administratively feasible; 

b. a public statement or publication of information by or on behalf of the administrator of the Benchmark announcing that such administrator
has ceased or will cease to provide the Benchmark, permanently or indefinitely, provided that, at the time of such statement or publication, there is no successor administrator that will continue to provide the Benchmark; 

c. a public statement or publication of information by the regulatory supervisor for the administrator of the Benchmark, the central bank for
the currency of the Benchmark, an insolvency official with jurisdiction over the administrator for the Benchmark, a resolution authority with jurisdiction over the administrator for the Benchmark or a court or an entity with similar insolvency or
resolution authority over the administrator for the Benchmark, which states that the administrator of the Benchmark has ceased or will cease to provide the Benchmark permanently or indefinitely, provided that, at the time of such statement or
publication, there is no successor administrator that will continue to provide the Benchmark; or 











 d. a public statement or publication of information by the regulatory supervisor for the
administrator of the Benchmark announcing that the Benchmark is no longer representative. 
 (7) “Calculation Agent” means
such bank or other entity (which may be the Company or an Affiliate of the Company) as may be appointed by the Company to act as Calculation Agent for the Subordinated Notes during the Floating Rate Period. 

(8) “Compounded SOFR” means the compounded average of SOFRs for the applicable Corresponding Tenor, with the rate, or
methodology for this rate, and conventions for this rate being established by the Company in accordance with: 
 a. the rate, or
methodology for this rate, and conventions for this rate selected or recommended by the Relevant Governmental Body for determining compounded SOFR; provided that: 

b. if, and to the extent that, the Company or its designee determines that Compounded SOFR cannot be determined in accordance with clause
(a) above, then the rate, or methodology for this rate, and conventions for this rate that have been selected by the Company or its designee giving due consideration to any industry-accepted market practice for U.S. dollar denominated
floating rate notes at such time. 
 For the avoidance of doubt, the calculation of Compounded SOFR will exclude the Benchmark Replacement Adjustment and
the spread specified on the face hereof. 
 (9) “Corresponding Tenor” with respect to a Benchmark Replacement means a
tenor (including overnight) having approximately the same length (disregarding Business Day adjustment) as the applicable tenor for the then-current Benchmark. 

(10) “FRBNY” means the Federal Reserve Bank of New York. 

(11) “FRBNY’s Website” means the website of the FRBNY at http://www.newyorkfed.org, or any successor source. 

(12) “Interpolated Benchmark” with respect to the Benchmark means the rate determined for the Corresponding Tenor by
interpolating on a linear basis between: (1) the Benchmark for the longest period (for which the Benchmark is available) that is shorter than the Corresponding Tenor and (2) the Benchmark for the shortest period (for which the Benchmark is
available) that is longer than the Corresponding Tenor. 
 (13) “ISDA” means the International Swaps and Derivatives
Association, Inc. or any successor thereto. 
 (14) “ISDA Definitions” means the 2006 ISDA Definitions published by the
ISDA or any successor thereto, as amended or supplemented from time to time, or any successor definitional booklet for interest rate derivatives published from time to time. 

(15) “ISDA Fallback Adjustment” means the spread adjustment (which may be a positive or negative value or zero) that would
apply for derivatives transactions referencing the ISDA Definitions to be determined upon the occurrence of an index cessation event with respect to the Benchmark for the applicable tenor. 











 (16) “ISDA Fallback Rate” means the rate that would apply for derivatives
transactions referencing the ISDA Definitions to be effective upon the occurrence of an index cessation date with respect to the Benchmark for the applicable tenor excluding the applicable ISDA Fallback Adjustment. 

(17) “Reference Time” with respect to any determination of a Benchmark means (1) if the Benchmark is Three-Month Term
SOFR, the time determined by the Calculation Agent after giving effect to the Three-Month Term SOFR Conventions, and (2) if the Benchmark is not Three-Month Term SOFR, the time determined by the Calculation Agent after giving effect to the
Benchmark Replacement Conforming Changes. 
 (18) “Relevant Governmental Body” means the Board of Governors of the Federal
Reserve System (the “Federal Reserve”) and/or the FRBNY, or a committee officially endorsed or convened by the Federal Reserve and/or the FRBNY or any successor thereto. 

(19) “SOFR” means the daily Secured Overnight Financing Rate provided by the FRBNY, as the administrator of the benchmark
(or a successor administrator), on the FRBNY’s Website. 
 (20) “Term SOFR” means the forward-looking term rate based
on SOFR that has been selected or recommended by the Relevant Governmental Body. 
 (21) “Term SOFR Administrator” means
any entity designated by the Relevant Governmental Body as the administrator of Term SOFR (or a successor administrator). 
 (22)
“Three-Month Term SOFR” means the rate for Term SOFR for a tenor of three months that is published by the Term SOFR Administrator at the Reference Time for any Floating Interest Period, as determined by the Calculation Agent after
giving effect to the Three-Month Term SOFR Conventions. 
 (23) “Three-Month Term SOFR Conventions” means any
determination, decision or election with respect to any technical, administrative or operational matter (including with respect to the manner and timing of the publication of Three-Month Term SOFR, or changes to the definition of “Floating
Interest Period”, timing and frequency of determining Three-Month Term SOFR with respect to each Floating Interest Period and making payments of interest, rounding of amounts or tenors, and other administrative matters) that the Company decides
may be appropriate to reflect the use of Three-Month Term SOFR as the Benchmark in a manner substantially consistent with market practice (or, if the Company decides that adoption of any portion of such market practice is not administratively
feasible or if the Company determines that no market practice for the use of Three-Month Term SOFR exists, in such other manner as the Company determines is reasonably necessary). 

(24) “Unadjusted Benchmark Replacement” means the Benchmark Replacement excluding the Benchmark Replacement Adjustment. 

(d) In the event that any Fixed Interest Payment Date during the Fixed Rate Period falls on a day that is not a Business Day (as defined
below), the interest payment due on that date shall be postponed to the next day that is a Business Day and no additional interest shall accrue as a result of that postponement. In the event that any Floating Interest Payment Date during the
Floating Rate Period falls on a day that is not a Business Day (as defined below), the interest payment due on that date shall be postponed to the next day that is a Business Day and interest shall accrue to but excluding the date interest are paid.
However, if the postponement would cause the day to fall in the next calendar month during the Floating Interest Period, the Floating Interest Payment Date shall instead be brought forward to the immediately preceding Business Day. 











 3. Paying Agent and Registrar. UMB Bank, National Association, the
Trustee under the Indenture, will act as the initial Paying Agent and Registrar through its offices presently located at 1010 Grand Boulevard, Kansas City, MO 64106. The Company may change any Paying Agent or Registrar without notice to any Holder.
The Company or any of its Subsidiaries may act in any such capacity. 
 4. Subordination. The indebtedness of the
Company evidenced by this Subordinated Note, including the principal thereof and interest thereon, is, to the extent and in the manner set forth in the Indenture, subordinate and junior in right of payment to obligations of the Company constituting
the Senior Indebtedness (as defined in the Indenture) on the terms and subject to the terms and conditions as provided and set forth in Article XI of the Indenture and will rank pari passu in right of payment with all other Subordinated
Notes. Holder, by the acceptance of this Subordinated Note, agrees to and will be bound by such provisions of the Indenture and authorizes and directs the Trustee on his behalf to take such actions as may be necessary or appropriate to effectuate
the subordination so provided. 
 5. Redemption. 

(a) The Company may, at its option, on any Interest Payment Date on or after June 30, 2025, redeem this Subordinated Note, in whole or in
part, without premium or penalty, but in all cases in a principal amount with integral multiples of $1,000. In addition, the Company may redeem all, but not a portion of the Subordinated Notes, at any time upon the occurrence of a Tier 2 Capital
Event, Tax Event or an Investment Company Event. Any redemption of this Subordinated Note shall be subject to the prior approval of the Federal Reserve (or its designee) or any successor agency, and any other banking regulatory agency, to the extent
such approval shall then be required by law, regulation or policy. This Subordinated Note is not subject to redemption at the option of the Holder. The Redemption Price with respect to any redemption permitted under the Indenture will be equal to
100% of the principal amount of this Subordinated Note, or portion thereof, to be redeemed, plus accrued but unpaid interest and Additional Interest, if any, thereon to, but excluding, the Redemption Date. 

(b) If less than the then outstanding principal amount of this Subordinated Note is redeemed, (i) a new note shall be issued representing
the unredeemed portion without charge to the Holder thereof and (ii) such redemption shall be effected on a pro rata basis as to the Holders. For purposes of clarity, upon a partial redemption, a like percentage of the principal amount of every
Subordinated Note held by every Holder shall be redeemed. 
 (c) If notice of redemption has been duly given and notwithstanding that any
Subordinated Notes so called for redemption have not been surrendered for cancellation, on and after the Redemption Date interest shall cease to accrue on all Subordinated Notes so called for redemption, all Subordinated Notes so called for
redemption shall no longer be deemed outstanding and all rights with respect to such Subordinated Notes shall forthwith on such Redemption Date cease and terminate (unless the Company shall default in the payment of the redemption price), except
only the right of the Holder thereof to receive the amount payable on such redemption, without interest. 
 6. Events of
Default; Acceleration. 
 An “Event of Default” means any one of the events described in
Section 4.01 of the Indenture. If an Event of Default described in Section 4.01(1) or Section 4.01(2) of the Indenture occurs, then the principal amount of all of the
Outstanding Subordinated Notes, and accrued and unpaid interest, if any, on all Outstanding Subordinated Notes will become and be immediately due and payable without any 











 
declaration or other act on the part of the Trustee or the Holder, and the Company waives demand, presentment for payment, notice of nonpayment, notice of protest, and all other notices.
Notwithstanding the foregoing, because the Company will treat the Subordinated Notes as Tier 2 Capital, upon the occurrence of an Event of Default other than an Event of Default described in Section 4.01(1) or
Section 4.01(2) of the Indenture, neither the Trustee nor the Holder may accelerate the Maturity of the Subordinated Notes and make the principal of, and any accrued and unpaid interest on, the Subordinated Notes,
immediately due and payable. If any Event of Default occurs and is continuing, the Trustee may also pursue any other available remedy to collect the payment of principal of, and interest on, the Subordinated Notes then due and payable or to enforce
the performance of any provision of the Subordinated Notes or the Indenture. 
 7. Failure to Make Payments. If the
Company fails to make any payment of interest on this Subordinated Note when such interest becomes due and payable and such default continues for a period of thirty (30) days, or if the Company fails to make any payment of the principal of this
Subordinated Note when such principal becomes due and payable, the Company will, upon demand of the Trustee, pay to the Trustee, for the benefit of the Holder, the whole amount then due and payable with respect to this Subordinated Note, with
interest upon the overdue principal, any premium and, to the extent permitted by applicable law, upon any overdue installments of interest at the rate or respective rates, as the case may be, provided for or with respect to this Subordinated Note
or, if no such rate or rates are so provided, at the rate or respective rates, as the case may be, of interest borne by this Subordinated Note. 

Upon an Event of Default, the Company may not declare or pay any dividends or distributions on, or redeem, purchase, acquire, or make a
liquidation payment with respect to, any of the Company’s capital stock, make any payment of principal or interest or premium, if any, on or repay, repurchase or redeem any debt securities of the Company that rank equal with or junior to this
Subordinated Note, or make any payments under any guarantee that ranks equal with or junior to this Subordinated Note, other than: (i) any dividends or distributions in shares of, or options, warrants or rights to subscribe for or purchase
shares of, any class of the Company’s common stock; (ii) any declaration of a dividend in connection with the implementation of a shareholders’ rights plan, or the issuance of stock under any such plan in the future, or the redemption
or repurchase of any such rights pursuant thereto; (iii) as a result of a reclassification of the Company’s capital stock or the exchange or conversion of one class or series of the Company’s capital stock for another class or series
of the Company’s capital stock; (iv) the purchase of fractional interests in shares of the Company’s capital stock in accordance with the conversion or exchange provisions of such capital stock or the security being converted or
exchanged; or (v) purchases of any class of the Company’s common stock related to the issuance of common stock or rights under any benefit plans for the Company’s directors, officers or employees or any of the Company’s dividend
reinvestment plans, 
 8. Denominations, Transfer, Exchange. The Subordinated Notes are issuable only in registered
form without interest coupons in minimum denominations of $100,000 and integral multiples of $1,000 in excess thereof. The transfer of this Subordinated Note may be registered and this Subordinated Note may be exchanged as provided in the Indenture.
The Registrar may require the Holder, among other things, to furnish appropriate endorsements and transfer documents and the Company may require the Holder to pay any taxes and fees required by law or permitted by the Indenture. 

9. Charges and Transfer Taxes. No service charge will be made for any registration of transfer or exchange of this
Subordinated Note, or any redemption or repayment of this Subordinated Note, or any conversion or exchange of this Subordinated Note for other types of securities or property, but the Company may require payment of a sum sufficient to pay all taxes,
assessments or other governmental charges that may be imposed in connection with the transfer or exchange of this Subordinated Note from the Holder requesting such transfer or exchange. 











 10. Persons Deemed Owners. The Company and the Trustee and any agent of
the Company or the Trustee may treat the Person in whose name this Subordinated Note is registered as the owner hereof for all purposes, whether or not this Subordinated Note is overdue, and neither the Company, the Trustee nor any such agent will
be affected by notice to the contrary. 
 11. Amendments; Waivers. The Indenture permits, with certain exceptions as
therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Subordinated Notes at any time by the Company and the Trustee with the consent of the holders of a
majority in principal amount of the then Outstanding Subordinated Notes. The Indenture also contains provisions permitting the holders of specified percentages in principal amount of the then Outstanding Subordinated Notes, on behalf of the holders
of all Subordinated Notes, to waive certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Subordinated Note will be conclusive and binding upon such Holder and upon all future holders of
this Subordinated Note and of any Subordinated Note issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or waiver is made upon this Subordinated Note. 

12. No Impairment. No reference herein to the Indenture and no provision of this Subordinated Note or of the Indenture
will alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and interest (if any) and Additional Interest on this Subordinated Note at the times, place and rate as herein prescribed. 

13. Sinking Fund; Convertibility. This Subordinated Note is not entitled to the benefit of any sinking fund. This
Subordinated Note is not convertible into or exchangeable for any of the equity securities, other securities or assets of the Company or any Subsidiary. 

14. No Recourse Against Others. No recourse under or upon any obligation, covenant or agreement contained in the
Indenture or in this Subordinated Note, or for any claim based thereon or otherwise in respect thereof, will be had against any past, present or future shareholder, employee, officer, or director, as such, of the Company or of any predecessor or
successor, either directly or through the Company or any predecessor or successor, under any rule of law, statute or constitutional provision or by the enforcement of any assessment or by any legal or equitable proceeding or otherwise, all such
liability being expressly waived and released by the acceptance of this Subordinated Note by the Holder and as part of the consideration for the issuance of this Subordinated Note. 

15. Authentication. This Subordinated Note will not be valid until authenticated by the manual signature of the Trustee
or an Authenticating Agent. 
 16. Abbreviations. Customary abbreviations may be used in the name of a Holder or an
assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= custodian), and U/G/M/A (= Uniform Gifts to Minors Act). Additional
abbreviations may also be used though not in the above list. 
 17. Available Information. The Company will furnish to
the Holder upon written request and without charge a copy of the Indenture. Requests by Holder to the Company may be made to: CapStar Financial Holdings, Inc., 1201 Demonbreun Street, Suite 700, Nashville, Tennessee 37203, Attention: Chief Financial
Officer. 
 18. Governing Law. THIS SUBORDINATED NOTE WILL BE DEEMED TO BE A CONTRACT MADE UNDER THE LAWS OF THE STATE
OF NEW YORK AND WILL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK 











 
WITHOUT GIVING EFFECT TO ANY LAWS OR PRINCIPLES OF CONFLICT OF LAWS THAT WOULD APPLY THE LAWS OF A DIFFERENT JURISDICTION. 

[Signature Page Follows] 











 IN WITNESS WHEREOF, the undersigned has caused this Subordinated Note to be duly executed
and attested. 
  

			
	CapStar Financial Holdings, Inc.
		
	By:	 	  

	Name:	 	Steve Groom
	Title:	 	Chief Risk Officer and General Counsel


  

			
	ATTEST:
	
	  

	Name:	 	
	Title:	 	












 TRUSTEE’S CERTIFICATE OF AUTHENTICATION 

This is one of the Subordinated Notes of CapStar Financial Holdings, Inc., referred to in the within-mentioned Indenture: 

 

			
	 UMB Bank, National Association, as Trustee

		
	 By:
	 	  

	 Name:
	 	
	 Title:
	 	












 ASSIGNMENT FORM 

To assign this Subordinated Note, fill in the form below: (I) or (we) assign and transfer this Subordinated Note to: 

 

	
	 (Print or type assignee’s name, address and zip
code)

	     

	 (Insert assignee’s social security or tax I.D.
No.)


 and irrevocably appoint
                                     agent to transfer this
Subordinated Note on the books of the Company. The agent may substitute another to act for him. 
  

									
	Date:	 	 	 	Your signature:	 	 
		 		 	(Sign exactly as your name appears on the face of this Subordinated Note)
				
		 		 	Tax Identification No:	 	 

  

			
	 Signature Guarantee:
	 	 

 (Signatures must be guaranteed by an eligible guarantor institution (banks, stockbrokers, savings and loan associations and
credit unions with membership in an approved signature guarantee medallion program), pursuant to Rule 17Ad-15 promulgated under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)).

 The undersigned certifies that it [is / is not] an Affiliate of the Company and that, to its knowledge, the proposed transferee [is /
is not] an Affiliate of the Company. “Affiliate” means, with respect to any Person, such Person’s immediate family members, partners, members or parent and subsidiary corporations, and any other Person directly or indirectly
controlling, controlled by, or under common control with said Person and their respective Affiliates. “Person” means an individual, a corporation (whether or not for profit), a partnership, a limited liability company, a joint venture, an
association, a trust, an unincorporated organization, a government or any department or agency thereof or any other entity or organization. 
 In connection
with any transfer or exchange of this Subordinated Note occurring prior to the date that is one year after the later of the date of original issuance of this Subordinated Note and the last date, if any, on which this Subordinated Note was owned by
the Company or any Affiliate of the Company, the undersigned confirms that this Subordinated Note is being: 
 CHECK ONE BOX BELOW: 

 

					
	☐	  	(1)	  	acquired for the undersigned’s own account, without transfer;
			
	☐	  	(2)	  	transferred to the Company;













					
	☐	  	(3)	  	transferred in accordance and in compliance with Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”);
			
	☐	  	(4)	  	transferred under an effective registration statement under the Securities Act;
			
	☐	  	(5)	  	transferred in accordance with and in compliance with Regulation S under the Securities Act;
			
	☐	  	(6)	  	transferred to an institutional “accredited investor” (as defined in Rule 501(a)(1), (2), (3) or (7) under the Securities Act);
			
	☐	  	(7)	  	transferred to an “accredited investor” (as defined in Rule 501(a)(4) under the Securities Act), not referred to in item (6) that has been provided with the information designated under Section 4(d) of the
Securities Act; or
			
	☐	  	(8)	  	transferred in accordance with another available exemption from the registration requirements of the Securities Act.

 Unless one of the boxes is checked, the Company will refuse to register this Subordinated Note in the name of any person other
than the registered holder thereof; provided, however, that if box (5), (6), (7) or (8) is checked, the Company may require, prior to registering any such transfer of this Subordinated Note, in its sole discretion, such legal opinions,
certifications and other information as the Company may reasonably request to confirm that such transfer is being made pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act such as the
exemption provided by Rule 144 under such Act. 
  

									
		 		 	Signature:	 	 

  

			
	 Signature Guarantee:
	 	 

 (Signatures must be guaranteed by an eligible guarantor institution (banks, stockbrokers, savings and loan associations and
credit unions with membership in an approved signature guarantee medallion program), pursuant to Exchange Act Rule 17Ad-l5). 

TO BE COMPLETED BY PURCHASER IF BOX (1) OR (3) ABOVE IS CHECKED. 

The undersigned represents and warrants that it is purchasing this Subordinated Note for its own account or an account with respect to which it exercises sole
investment discretion and that it and any such account is a “qualified institutional buyer” within the meaning of Rule 144A under the Securities Act and is aware that the sale to it is being made in reliance on Rule 144A and acknowledges
that it has received such information regarding the Company as the undersigned has requested pursuant to Rule 144A or has determined not to request such information and that it is aware that the transferor is relying upon the undersigned’s
foregoing representations in order to claim the exemption from registration provided by Rule 144A. 
  

									
		 		 	Signature: