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Exhibit 4.4    
    

THE
REGISTERED HOLDER OF THIS UNIT PURCHASE OPTION BY ITS ACCEPTANCE HEREOF, AGREES THAT IT WILL NOT SELL, TRANSFER OR ASSIGN THIS UNIT PURCHASE OPTION EXCEPT AS HEREIN PROVIDED AND THE REGISTERED
HOLDER OF THIS UNIT PURCHASE OPTION AGREES THAT IT WILL NOT SELL, TRANSFER, ASSIGN, PLEDGE OR HYPOTHECATE THIS UNIT PURCHASE OPTION FOR A PERIOD OF ONE HUNDRED EIGHTY (180) DAYS FOLLOWING THE
EFFECTIVE DATE (DEFINED BELOW) TO ANYONE OTHER THAN (I) I-BANKERS SECURITIES INCORPORATED, NEWBRIDGE SECURITIES CORPORATION, OR AN UNDERWRITER OR A SELECTED DEALER IN CONNECTION
WITH THE OFFERING, OR (II) A BONA FIDE OFFICER OR PARTNER OF I-BANKERS OR NEWBRIDGE OR OF ANY SUCH UNDERWRITER OR SELECTED DEALER. 

THIS
UNIT PURCHASE OPTION IS NOT EXERCISABLE PRIOR TO THE LATER OF THE CONSUMMATION BY COASTAL BANCSHARES ACQUISITION CORP. (THE "COMPANY") OF A MERGER, CAPITAL STOCK EXCHANGE, ASSET ACQUISITION OR
OTHER SIMILAR BUSINESS COMBINATION (THE "BUSINESS COMBINATION") (AS DESCRIBED MORE FULLY IN THE COMPANY'S REGISTRATION STATEMENT (DEFINED HEREIN)) OR            , 2005. VOID AFTER
5:00 P.M.
EASTERN TIME,                        , 2009. 

UNIT
PURCHASE OPTION 

FOR
THE PURCHASE OF 

300,000
UNITS 

OF 

COASTAL
BANCSHARES ACQUISITION CORP. 

        1.     Unit Purchase Option.

        THIS
CERTIFIES THAT, in consideration of $100 duly paid by or on behalf of I-Bankers Securities Incorporated ("I-Bankers") and Newbridge Securities Corporation
("Newbridge") (each, a "Holder"), as registered owner of this Unit Purchase Option, to Coastal Bancshares Acquisition Corp. (the "Company"), Holder is entitled, at any time or from time to time upon
the later of the consummation of a Business Combination or                        , 2005 (the "Commencement Date"), and at or
before 5:00 p.m., Eastern Time,                        , 2009 (the "Expiration
Date"), but not thereafter, to subscribe for, purchase and receive, in whole or in part, up to Three Hundred Thousand (300,000) units (the "Units") of the Company, each Unit consisting of one share of
common stock of the Company, par value $0.01 per share (the "Common Stock"), and two warrants (the "Warrant(s)") expiring five years from the effective date (the "Effective Date") of the registration
statement (the "Registration Statement") pursuant to which Units are offered for sale to the public (the "Offering"). Each Warrant is the same as the warrants included in the Units being registered
for sale to the public (the "Public Warrants") under the Securities Act of 1933, as amended (the "Act") except that the exercise price of the Warrants shall be $6.65 per share. If the Expiration Date
is a day on which banking institutions are authorized by law to close, then this Unit Purchase Option may be exercised on the next succeeding day which is not such a day in accordance with the terms
herein. During the period ending on the Expiration Date, the Company agrees not to take any action that would terminate the Unit Purchase Option. This Unit Purchase Option is initially exercisable at
$7.50 per Unit so purchased; provided, however, that upon the occurrence of any of the events specified in Section 6 hereof, the rights granted by this Unit Purchase Option, including the
exercise price per Unit and the number of Units (and shares of Common Stock and Warrants) to be received upon such exercise, shall 

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be
adjusted as therein specified. The term "Exercise Price" shall mean the initial exercise price or the adjusted exercise price, depending on the context. 

        2.     Exercise.

        (a)   Exercise Procedure. In order to exercise this Unit Purchase Option, the exercise form attached hereto must be duly
executed and completed and delivered to the Company, together with this Unit Purchase Option and payment of the Exercise Price for the Units being purchased payable in cash or by certified
check or official bank check. If the subscription rights represented hereby shall not be exercised at or before 5:00 p.m., Eastern time, on the Expiration Date this Unit Purchase Option shall
become and be void without further force or effect, and all rights represented hereby shall cease and expire. 

        (b)   Legend. Each certificate for the securities purchased under this Unit Purchase Option shall bear a legend as follows
unless such securities have been registered under the Securities Act of 1933, as amended (the "Act"): 

"The
securities represented by this certificate have not been registered under the Securities Act of 1933, as amended (the "Act") or applicable state law. The securities may not be offered for sale,
sold or otherwise transferred except pursuant to an effective registration statement under the Act, or pursuant to an exemption from registration under the Act and applicable state law." 

        (c)   Cashless Exercise. (i) In lieu of the payment of the Exercise Price multiplied by the number of Units for which
this Unit Purchase Option is exercisable (and in lieu of being entitled to receive Common Stock and Warrants) in the manner required by Section 2(a), the Holder shall have the right (but not
the obligation) to convert any exercisable but unexercised portion of this Unit Purchase Option into Units (the "Conversion Right") as follows: upon exercise of the Conversion Right, the Company shall
deliver to the Holder (without payment by the Holder of any of the Exercise Price in cash) that number of shares of Common Stock and Warrants comprising that number of Units equal to the quotient
obtained by dividing (x) the "Value" (as defined below) of the portion of the Unit Purchase Option being converted by (y) the Current Market Value (as defined below). The "Value" of the
portion of the Unit Purchase Option being converted shall equal the remainder derived from subtracting (a) (i) the Exercise Price multiplied by (ii) the number of Units underlying the
portion of this Unit Purchase Option being converted from (b) the Current Market Value of a Unit multiplied by the number of Units underlying the portion of the Unit Purchase Option being
converted. As used herein, the term "Current Market Value" per Unit at any date means the remainder derived from subtracting (x) the exercise price of the Warrants multiplied by the number of
shares of Common Stock issuable upon exercise of the Warrants underlying one Unit from (y) the Current Market Price of the Common Stock multiplied by the number of shares of Common Stock
underlying the Warrants and the Common Stock issuable upon exercise of one Unit. The "Current Market Price" of a share of Common Stock shall mean (i) if the Common Stock is listed on a national
securities exchange or quoted on the Nasdaq National Market, Nasdaq SmallCap Market or NASD OTC Bulletin Board (or successor such as the Bulletin Board Exchange), the last sale price of the Common
Stock in the principal trading market for the Common Stock as reported by the exchange, Nasdaq or the NASD, as the case may be; (ii) if the Common Stock is not listed on a national securities
exchange or quoted on the Nasdaq National Market, Nasdaq SmallCap Market or the NASD OTC Bulletin Board (or successor such as the Bulletin Board Exchange), but is traded in the residual
over-the-counter market, the closing bid price for the Common Stock on the last trading day preceding the date in question for which such quotations are reported by the Pink
Sheets, LLC or similar publisher of such quotations; and (iii) if the fair market value of the Common Stock cannot be determined 

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pursuant
to clause (i) or (ii) above, such price as the Board of Directors of the Company shall determine, in good faith. 

        (ii)   The
Cashless Exercise Right may be exercised by the Holder on any business day on or after the Commencement Date and not later than the Expiration Date by delivering
the Unit Purchase Option with the duly executed exercise form attached hereto with the cashless exercise section completed to the Company, exercising the Cashless Exercise Right and specifying the
total number of Units the Holder will purchase pursuant to such Cashless Exercise Right. 

        3.     Transfer.

        (a)   Restrictions—General. The registered Holder of this Unit Purchase Option, by its acceptance hereof, agrees
that it will not sell, transfer, assign, pledge or hypothecate this Unit Purchase Option for a period of one hundred eighty (180) days following the Effective Date to anyone other than
(i) I-Bankers or Newbridge or an underwriter or a selected dealer in connection with the Offering, or (ii) a bona fide officer or partner of I-Bankers or
Newbridge or of any such underwriter or selected dealer. On and after the first anniversary of the Effective Date, transfers to others may be made subject to compliance with or exemptions from
applicable securities laws. In order to make any permitted assignment, the Holder must deliver to the Company the assignment form attached hereto duly executed and completed, together with the Unit
Purchase Option and payment of all transfer taxes, if any, payable in connection therewith. The Company shall within five business days transfer this Unit Purchase Option on the books of the Company
and shall execute and deliver a new Unit Purchase Option or Unit Purchase Options of like tenor to the appropriate assignee(s) expressly evidencing the right to purchase the aggregate number of Units
purchasable hereunder or such portion of such number as shall be contemplated by any such assignment. 

        (b)   Restrictions—Securities. The securities evidenced by this Unit Purchase Option shall not be transferred
unless and until (i) the Company has received the opinion of counsel for the Holder that the securities may be transferred pursuant to an exemption from registration under the Act and
applicable state securities laws, the availability of which is established to the reasonable satisfaction of the Company (the Company hereby agreeing that the opinion of Jenkens & Gilchrist
shall be deemed satisfactory evidence of the availability of an exemption), or (ii) a registration statement or a post-effective amendment to the Registration Statement relating to
such securities has been filed by the Company and declared effective by the Securities and Exchange Commission (the "Commission") and compliance with applicable state securities law has been
established. 

        4.     New Purchase Options to be Issued.

        (a)   Partial Exercise. Subject to the restrictions in Section 3 hereof, this Unit Purchase Option may be exercised or
assigned in whole or in part. In the event of the exercise or assignment hereof in part only, upon surrender of this Unit Purchase Option for cancellation, together with the duly executed exercise or
assignment form and funds sufficient to pay any Exercise Price and/or transfer tax, the Company shall cause to be delivered to the Holder without charge a new Unit Purchase Option of like tenor to
this Unit Purchase Option in the name of the Holder evidencing the right of the Holder to
purchase the number of Units purchasable hereunder as to which this Unit Purchase Option has not been exercised or assigned. 

        (b)   Loss, Theft, Destruction. Upon receipt by the Company of evidence satisfactory to it of the loss, theft, destruction or
mutilation of this Unit Purchase Option and of reasonably satisfactory indemnification or the posting of a bond, the Company shall execute and deliver a new Unit Purchase Option of like tenor and
date. Any such new Unit Purchase Option executed and 

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delivered
as a result of such loss, theft, mutilation or destruction shall constitute a substitute contractual obligation on the part of the Company. 

        5.     Registration Rights.

        (a)   Demand Registration. 

        (i)    The
Company, upon written demand (the "Initial Demand Notice") of the Holder(s) of at least 51% of the Unit Purchase Options and/or the underlying Units and/or the
underlying securities (the "Majority Holders"), agrees to register on one occasion, all or any portion of the Unit Purchase Options requested by the Majority Holders in the Initial Demand Notice and
all of the securities underlying such Unit Purchase Options, including the Units, Common Stock, the Warrants and the Common Stock underlying the Warrants (collectively, the "Registrable Securities").
On such occasion, the Company will file a registration statement or a post-effective amendment to the Registration Statement covering the Registrable Securities within sixty days
after receipt of the Initial Demand Notice and use its best efforts to have such registration statement or post-effective amendment declared effective as soon as possible thereafter. The
demand for registration may be made at any time during a period of five years beginning on the Effective Date. The Company covenants and agrees to give written notice of its receipt of any Initial
Demand Notice by any Holder(s) to all other registered Holders of the Unit Purchase Options and/or the Registrable Securities within ten days from the date of the receipt of any such Initial Demand
Notice. 

        (ii)   The
Company shall bear all fees and expenses attendant to registering the Registrable Securities, including the expenses of any legal counsel selected by the Holders to
represent them in connection with the sale of the Registrable Securities, but the Holders shall pay any and all underwriting commissions. The Company agrees to use its reasonable best efforts to
qualify or register the Registrable Securities in such states as are reasonably requested by the Majority Holder(s); provided, however, that in no event shall the Company be required to register the
Registrable Securities in a state in which such registration would cause (i) the Company to be obligated to qualify to do business in such state, or would subject the Company to taxation as a
foreign corporation doing business in such jurisdiction or (ii) the principal stockholders of the Company to be obligated to escrow their shares of capital stock of the Company. The Company
shall cause any registration statement or
post-effective amendment filed pursuant to the demand rights granted under Section 5.1.1 to remain effective for a period of nine consecutive months from the effective date of such
registration statement or post-effective amendment. 

        (b)   "Piggy-Back" Registration.

        (i)    In
addition to the demand right of registration, the Holders of the Unit Purchase Options shall have the right for a period of seven years commencing on the Effective
Date, to include the Registrable Securities as part of any other registration of securities filed by the Company (other than in connection with a transaction contemplated by Rule 145(a)
promulgated under the Act or pursuant to Form S-8); provided, however, that if, in the written opinion of the Company's managing underwriter or underwriters, if any, for such
offering, the inclusion of the Registrable Securities, when added to the securities being registered by the Company or the selling stockholder(s), will exceed the maximum amount of the Company's
securities which can be marketed (i) at a price reasonably related to their then current market value, and (ii) without materially and adversely affecting the entire offering, then the
Company will still be required to include the Registrable Securities, but may require the Holders to agree, in writing, to delay the sale of all or any portion of the Registrable Securities for a
period of 90 days from the effective date of the offering, provided, further, that if the sale of any Registrable Securities is so delayed, then the number of securities to be 

4

 

sold
by all stockholders in such public offering during such 90 day period shall be apportioned pro rata among all such selling stockholders, including all holders of the Registrable
Securities, according to the total amount of securities of the Company owned by said selling stockholders, including all holders of the Registrable Securities. 

        (ii)   The
Company shall bear all fees and expenses attendant to registering the Registrable Securities, including the expenses of any legal counsel selected by the Holders to
represent them in connection with the sale of the Registrable Securities but the Holders shall pay any and all underwriting commissions related to the Registrable Securities. In the event of such a
proposed registration, the Company shall furnish the then Holders of outstanding Registrable Securities with not less than fifteen days written notice prior to the proposed date of filing of such
registration statement. Such notice to the Holders shall continue to be given for each applicable registration statement filed (during the period in which the Unit Purchase Option is exercisable) by
the Company until such time as all of the Registrable Securities have been registered and sold. The holders of the Registrable Securities shall exercise the "piggy-back" rights provided
for herein by giving written notice, within ten days of the receipt of the Company's notice of its intention to file a registration statement. The Company shall cause any registration statement
filed pursuant to the above "piggyback" rights to remain effective for at least nine months from the date that the Holders of the Registrable Securities are first given the opportunity to sell all of
such securities. 

        (c)   Damages. Should the registration or the effectiveness thereof required by Sections 5(a) and 5(b) hereof be delayed by the
Company or the Company otherwise fails to comply with such provisions, the
Company shall, in addition to any other equitable or other relief available to the Holder(s), be liable for any and all incidental, special and consequential damages sustained by the Holder(s),
including, but not limited to, the loss of any profits that might have been received by the Holder upon the sale of shares of Common Stock or Warrants (and shares of Common Stock underlying the
Warrants) underlying this Unit Purchase Option. 

        (d)   Indemnification. 

        (i)    The
Company shall indemnify the Holder(s) of the Registrable Securities to be sold pursuant to any registration statement hereunder and each person, if any, who controls
such Holders within the meaning of Section 15 of the Act or Section 20(a) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), against all loss, claim, damage,
expense or liability (including all reasonable attorneys' fees and other expenses reasonably incurred in investigating, preparing or defending against litigation, commenced or threatened, or any claim
whatsoever whether arising out of any action between the Underwriter and the Company or between the Underwriter and any third party or otherwise) to which any of them may become subject under the Act,
the Exchange Act or otherwise, arising from such registration statement but only to the same extent and with the same effect as the provisions pursuant to which the Company has agreed to indemnify the
Underwriters contained in Section 5 of the Underwriting Agreement between the Company, I-Bankers and Newbridge and the other Underwriters named therein dated the Effective Date. The
Holder(s) of the Registrable Securities to be sold pursuant to such registration statement, and their successors and assigns, shall severally, and not jointly, indemnify the Company, its officers and
directors and each person, if any, who controls the Company within the meaning of Section 15 of the Act or Section 20(a) of the Exchange Act, against all loss, claim, damage, expense or
liability (including all reasonable attorneys' fees and other expenses reasonably incurred in investigating, preparing or defending against any claim whatsoever) to which they may become subject under
the Act, the Exchange Act or otherwise, arising from information furnished by or on behalf of such Holders, or their successors or assigns, in writing, for specific inclusion in such registration
statement to the same extent and with the same effect as the provisions 

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contained
in Section 5 of the Underwriting Agreement pursuant to which the Underwriters have agreed to indemnify the Company. 

        (ii)   Nothing
contained in this Unit Purchase Option shall be construed as requiring the Holder(s) to exercise their Unit Purchase Options or Warrants underlying such Unit
Purchase Options prior to or after the initial filing of any registration statement or the effectiveness thereof. 

        (iii)  The
Company shall furnish I-Bankers and Newbridge, as representatives of the Holders participating in any of the foregoing offerings, a signed counterpart,
addressed to the participating Holders, of (i) an opinion of counsel to the Company, dated the effective date of such registration statement (and, if such registration includes an underwritten
public offering, an opinion dated the date of the closing under any underwriting agreement related thereto), and (ii) a "cold
comfort" letter dated the effective date of such registration statement (and, if such registration includes an underwritten public offering, a letter dated the date of the closing under the
underwriting agreement) signed by the independent public accountants who have issued a report on the Company's financial statements included in such registration statement, in each case covering
substantially the same matters with respect to such registration statement (and the prospectus included therein) and, in the case of such accountants' letter, with respect to events subsequent to the
date of such financial statements, as are customarily covered in opinions of issuer's counsel and in accountants' letters delivered to underwriters in underwritten public offerings of securities. The
Company shall also deliver promptly to I-Bankers and Newbridge, as representatives of the Holders participating in the offering, the correspondence and memoranda described below and copies
of all correspondence between the Commission and the Company, its counsel or auditors and all memoranda relating to discussions with the Commission or its staff with respect to the registration
statement and permit I-Bankers and Newbridge, as representatives of the Holders, to do such investigation, upon reasonable advance notice, with respect to information contained in or
omitted from the registration statement as it deems reasonably necessary to comply with applicable securities laws or rules of the National Association of Securities Dealers, Inc. (the "NASD").
Such investigation shall include access to books, records and properties and opportunities to discuss the business of the Company with its officers and independent auditors, all to such reasonable
extent and at such reasonable times and as often as I-Bankers and Newbridge, as representatives of the Holders, shall reasonably request. The Company shall not be required to disclose any
confidential information or other records to I-Bankers and Newbridge, as representatives of the Holders, or to any other person, until and unless such persons shall have entered into
reasonable confidentiality agreements (in form and substance reasonably satisfactory to the Company), with the Company with respect thereto. 

        (iv)  The
Company shall enter into an underwriting agreement with the managing underwriter(s), if any, selected by any Holders whose Registrable Securities are being
registered pursuant to this Section 5, which managing underwriter shall be reasonably acceptable to the Company. Such agreement shall be reasonably satisfactory in form and substance to the
Company, each Holder and such managing underwriters, and shall contain such representations, warranties and covenants by the Company and such other terms as are customarily contained in agreements of
that type used by the managing underwriter. The Holders shall be parties to any underwriting agreement relating to an underwritten sale of their Registrable Securities and may, at their option,
require that any or all the representations, warranties and covenants of the Company to or for the benefit of such underwriters shall also be made to and for the benefit of such Holders. Such Holders
shall not be required to make any representations or warranties to or agreements with the Company or the underwriters except as they may relate to such Holders and their intended methods of 

6

 

distribution.
Such Holders, however, shall agree to such covenants and indemnification and contribution obligations for selling stockholders as are customarily contained in agreements of that type
used by the managing underwriter. Further, such Holders shall execute appropriate custody agreements and otherwise cooperate fully in the preparation of the registration statement and other documents
relating to any offering in which they include securities pursuant to this Section 5. Each Holder shall also furnish to the Company such information regarding itself, the Registrable Securities
held by it, and the intended method of disposition of such securities as shall be reasonably required to effect the registration of the Registrable Securities. 

        (v)   Notwithstanding
anything contained in this Section 5 to the contrary, the Company shall have no obligation pursuant to Sections 5(a) or 5(b) for the registration
of Registrable Securities held by any Holder (i) where such Holder would then be entitled to sell under Rule 144 within any three-month period (or such other period prescribed under
Rule 144 as may be provided by amendment thereof) all of the Registrable Securities then held by such Holder, and (ii) where the number of Registrable Securities held by such Holder is
within the volume limitations under paragraph (e) of Rule 144 (calculated as if such Holder were an affiliate within the meaning of Rule 144). 

        (vi)  Each
Holder agrees, that upon receipt of any notice from the Company of the happening of any event as a result of which the prospectus included in the Registration
Statement, as then in effect, includes an untrue statement of a material fact or omits to state a material fact required to be stated therein or necessary to make the statements therein not misleading
in light of the circumstances then existing, such Holder will immediately discontinue disposition of Registrable Securities pursuant to the Registration Statement covering such Registrable Securities
until such Holder's receipt of the copies of a supplemental or amended prospectus, and, if so desired by the Company, such Holder shall deliver to the Company (at the expense of the Company) or
destroy (and deliver to the Company a certificate of such destruction) all copies, other than permanent file copies then in such Holder's possession, of the prospectus covering such Registrable
Securities current at the time of receipt of such notice. 

        6.     Adjustments.

        (a)   Exercise Price and Number of Securities. The Exercise Price and the number of Units underlying the Unit Purchase Option
shall be subject to adjustment from time to time as hereinafter set forth: 

        (i)    If
after the date hereof, and subject to the provisions of Section 6.3 below, the number of outstanding shares of Common Stock is increased by a stock dividend
payable in shares of Common Stock or by a split-up of shares of Common Stock or other similar event, then, on the effective date thereof, the number of shares of Common Stock underlying
each of the Units purchasable hereunder shall be increased in proportion to such increase in outstanding shares. In such case, the number of shares of Common Stock, and the exercise price applicable
thereto, underlying the Warrants underlying each of the Units purchasable hereunder shall be adjusted in accordance with the terms of the Warrants. For example, if the Company declares a
two-for-one stock dividend and at the time of such dividend this Unit Purchase Option is for the purchase of one Unit at $7.50 per whole Unit (each Warrant underlying the Units
is exercisable for $2.50 per share), upon effectiveness of the dividend, this Unit Purchase Option will be adjusted to allow for the purchase of one Unit at $7.50 per Unit, each Unit entitling the
holder to receive two shares of Common Stock and four Warrants (each Warrant exercisable for $2.50 per share). 

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        (ii)   If
after the date hereof, and subject to the provisions of Section 6.4, the number of outstanding shares of Common Stock is decreased by a consolidation,
combination or reclassification of shares of Common Stock or other similar event, then, on the effective date thereof, the number of shares of Common Stock underlying each of the Units purchasable
hereunder shall be decreased in proportion to such decrease in outstanding shares. In such case, the number of shares of Common Stock, and the exercise price applicable thereto, issuable upon exercise
of the Warrants included in each of the Units purchasable hereunder shall be adjusted in accordance with the terms of the Warrants. 

        (iii)  In
case of any reclassification or reorganization of the outstanding shares of Common Stock other than a change covered by Section 6(a)(i) or
6(a)(ii) hereof or that solely affects the par value of such shares of Common Stock, or in the case of any merger or consolidation of the Company with or into another corporation (other than a
consolidation or merger in which the Company is the continuing corporation and that does not result in any reclassification or reorganization of the outstanding shares of Common Stock), or in the case
of any sale or conveyance to another corporation or entity of the property of the Company as an entirety or substantially as an entirety in connection with which the Company is dissolved, the Holder
of this Unit Purchase Option shall have the right thereafter (until the expiration of the right of exercise of this Unit Purchase Option) to receive upon the exercise hereof, for the same aggregate
Exercise Price payable hereunder immediately prior to such event, the kind and amount of shares of stock or other securities or property (including cash) receivable upon such reclassification,
reorganization, merger or consolidation, or upon a dissolution following any such sale or transfer, by a Holder of the number of shares of Common Stock of the Company obtainable upon exercise of this
Unit Purchase Option and the underlying Warrants immediately prior to such event; and if any reclassification also results in a change in shares of Common Stock covered by
Section 6(a)(i) or 6(a)(ii), then such adjustment shall be made pursuant to Sections 6(a)(i), 6(a)(ii) and this Section 6(a)(iii). The provisions of this
Section 6(a)(iii) shall similarly apply to successive reclassifications, reorganizations, mergers or consolidations, sales or other transfers. 

        (iv)  This
form of Unit Purchase Option need not be changed because of any change pursuant to this Section, and Unit Purchase Options issued after such change may state the
same Exercise Price and the same number of Units as are stated in the Unit Purchase Options initially issued pursuant to this Agreement. The acceptance by any Holder of the issuance of new Unit
Purchase Options reflecting a required or permissive change shall not be deemed to waive any rights to an adjustment occurring after the Commencement Date or the computation thereof. 

        (b)   Substitute Unit Purchase Option. In case of any consolidation of the Company with, or merger of the Company with, or
merger of the Company into, another corporation (other than a consolidation or merger which does not result in any reclassification or change of the outstanding Common Stock), the corporation formed
by such consolidation or merger shall execute and deliver to the Holder a supplemental Unit Purchase Option providing that the holder of each Unit Purchase Option then outstanding or to be outstanding
shall have the right thereafter (until the stated expiration of such Unit Purchase Option) to receive, upon exercise of such Unit Purchase Option, the kind and amount of shares of stock and other
securities and property receivable upon such consolidation or merger, by a holder of the number of shares of Common Stock of the Company for which such Unit Purchase Option might have been exercised
immediately prior to such consolidation, merger, sale or transfer. Such supplemental Unit Purchase Option shall provide for adjustments which shall be identical to the adjustments provided in
Section 6. The above provision of this Section shall similarly apply to successive consolidations or mergers. 

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        (c)   Fractional Interests. The Company shall not be required to issue certificates representing fractions of shares of Common
Stock or Warrants upon the exercise of the Unit Purchase Option, nor shall it be required to issue scrip or pay cash in lieu of any fractional interests, it being the intent of the parties that all
fractional interests shall be eliminated by rounding any fraction up to the nearest whole number of Warrants, shares of Common Stock or other securities, properties or rights. 

        7.     Reservation and Listing. The Company shall at all times reserve and keep available out of its authorized shares of Common
Stock, solely for the purpose of issuance upon exercise of the Unit Purchase Options or the Warrants underlying the Unit Purchase Option, such number of shares of Common Stock or other securities,
properties or rights as shall be issuable upon the exercise thereof. The Company covenants and agrees that, upon exercise of the Unit Purchase Options and payment of the Exercise Price therefor, all
shares of Common Stock and other securities issuable upon such exercise shall be duly and validly issued, fully paid and non-assessable and not subject to preemptive rights of any
stockholder. The Company further covenants and agrees that upon exercise of the Warrants underlying the Unit Purchase Options and payment of the respective Warrant exercise price therefor, all shares
of Common Stock and other securities issuable upon such exercise shall be duly and validly issued, fully paid and non-assessable and not subject to preemptive rights of any stockholder. As
long as the Unit Purchase Options shall be outstanding, the Company shall use its best efforts to cause all (i) Units and shares of Common Stock issuable upon exercise of the Unit Purchase
Options, (iii) Warrants issuable upon exercise of the Unit Purchase Options and (iv) shares of Common Stock issuable upon exercise of the Warrants included in the Units issuable upon
exercise of the Unit Purchase Option to be listed (subject to official notice of issuance) on all securities exchanges (or, if applicable on the Nasdaq National Market, SmallCap Market, OTC Bulletin
Board or any successor trading market) on which the Units, the Common Stock or the Public Warrants issued to the public in connection herewith may then be listed and/or quoted. 

        8.     Certain Notice Requirements.

        (a)   Right to Notice. Nothing herein shall be construed as conferring upon the Holders the right to vote or consent as a
stockholder for the election of directors or any other matter, or as having any rights whatsoever as a stockholder of the Company. If, however, at any time prior to the expiration of the Unit Purchase
Options and their exercise, any of the events described in Section 8(b) shall occur, then, in one or more of said events, the Company shall give written notice of such event at least fifteen
days prior to the date fixed as a record date or the date of closing the transfer books for the determination of the stockholders entitled to such dividend, distribution, conversion or exchange of
securities or subscription rights, or entitled to vote on such proposed dissolution, liquidation, winding up or sale. Such notice shall specify such record date or the date of the closing of the
transfer books, as the case may be. Notwithstanding the foregoing, the Company shall deliver to each Holder a copy of each notice given to the other stockholders of the Company at the same time and in
the same manner that such notice is given to the stockholders. 

        (b)   Enumerated Events. The Company shall be required to give the notice described in this Section 8 upon one or more
of the following events: (i) if the Company shall take a record of the holders of its shares of Common Stock for the purpose of entitling them to receive a dividend or distribution payable
otherwise than in cash, or a cash dividend or distribution payable otherwise than out of retained earnings, as indicated by the accounting treatment of such dividend or distribution on the books of
the Company, or (ii) the Company shall offer to all the holders of its Common Stock any additional shares of capital stock of the Company or securities convertible into or exchangeable for
shares of capital stock of the Company, or any option, right or warrant to subscribe therefor, or (iii) a dissolution, liquidation or winding up of the Company (other than in connection with a
consolidation or merger) or a sale of all or substantially all of its property, assets and business shall be proposed. 

9

 

        (c)   Change in Exercise Price. The Company shall, promptly after an event requiring a change in the Exercise Price pursuant to
Section 6 hereof, send notice to the Holders of such event and change (the "Price Notice"). The Price Notice shall describe the event causing the change and the method of calculating same and
shall be certified as being true and accurate by the Company's President and Chief Financial Officer. 

        (d)   Notice Delivery. All notices, requests, consents and other communications under this Unit Purchase Option shall be in
writing and shall be deemed to have been duly made when hand delivered, or mailed by express mail or private courier service: (i) If to the registered Holder of the Unit Purchase Option, to the
address of such Holder as shown on the books of the Company, or (ii) If to the Company, to the following address or to such other address as the Company may designate by notice to the Holders: 

Coastal
Bancshares Acquisition Corp.

9821 Katy Freeway

Suite 500

Houston, Texas 77024

Attn: Co-Chief Executive Officer 

        9.     Miscellaneous.

        (a)   Amendments. The Company, I-Bankers and Newbridge may from time to time supplement or amend this Unit Purchase
Option without the approval of any of the Holders in order to cure any ambiguity, to correct or supplement any provision contained herein that may be defective or inconsistent with any other
provisions herein, or to make any other provisions in regard to matters or questions arising hereunder that the Company, I-Bankers and Newbridge may deem necessary or desirable and that
the Company, I-Bankers and Newbridge deem shall not adversely affect the interest of the Holders. All other modifications or amendments shall require the written consent of and be signed
by the party against whom enforcement of the modification or amendment is sought. 

        (b)   Headings. The headings contained herein are for the sole purpose of convenience of reference, and shall not in any way
limit or affect the meaning or interpretation of any of the terms or provisions of this Unit Purchase Option. 

        10.   Entire Agreement. This Unit Purchase Option (together with the other agreements and documents being delivered pursuant to
or in connection with this Unit Purchase Option) constitutes the entire agreement of the parties hereto with respect to the subject matter hereof, and supersedes all prior agreements and
understandings of the parties, oral and written, with respect to the subject matter hereof. 

        (a)   Binding Effect. This Unit Purchase Option shall inure solely to the benefit of, and shall be binding upon, the Holder and
the Company and their permitted assignees, respective successors, legal representative and assigns, and no other person shall have or be construed to have any legal or equitable right, remedy or claim
under or in respect of or by virtue of this Unit Purchase Option or any provisions herein contained. 

        (b)   Governing Law. This Unit Purchase Option shall be governed by and construed and enforced in accordance with the laws of
the State of New York, without giving effect to conflict of laws. The Company hereby agrees that any action, proceeding or claim against it arising out of, or relating in any way to this Unit Purchase
Option shall be brought and enforced in the courts of the State of New York or of the United States of America for the Southern District of New York, and irrevocably submits to such jurisdiction,
which jurisdiction shall be exclusive. The Company hereby waives any objection to such exclusive jurisdiction and that such courts represent an inconvenient forum. Any process or summons to be served
upon the Company may be served by transmitting a copy thereof by registered or certified mail, return receipt requested, postage prepaid, addressed to 

10

 

it
at the address set forth in Section 8 hereof. Such mailing shall be deemed personal service and shall be legal and binding upon the Company in any action, proceeding or claim. The Company
and the Holder agree that the prevailing party(ies) in any such action shall be entitled to recover from the other party(ies) all of its reasonable attorneys' fees and expenses relating to such action
or proceeding and/or incurred in connection with the preparation therefor. 

        (c)   Waivers. The failure of the Company or the Holder to at any time enforce any of the provisions of this Unit Purchase
Option shall not be deemed or construed to be a waiver of any such provision, nor to in any way affect the validity of this Unit Purchase Option or any provision hereof or the right of the Company or
any Holder to thereafter enforce each and every provision of this Unit Purchase Option. No waiver of any breach, non-compliance or non-fulfillment of any of the provisions of
this Unit Purchase Option shall be effective unless set forth in a written instrument executed by the party or parties against whom or which enforcement of such waiver is sought; and no waiver of any
such breach, non-compliance or non-fulfillment shall be construed or deemed to be a waiver of any other or subsequent breach, non-compliance or
non-fulfillment. 

        (d)   Counterparts. This Unit Purchase Option may be executed in one or more counterparts, and by the different parties hereto
in separate counterparts, each of which shall be deemed to be an original, but all of which taken together shall constitute one and the same agreement, and shall become effective when one or more
counterparts has been signed by each of the parties hereto and delivered to each of the other parties hereto. 

        (e)   Exchange Agreement. As a condition of the Holder's receipt and acceptance of this Unit Purchase Option, Holder agrees
that, at any time prior to the complete exercise of this Unit Purchase Option by Holder, if the Company and Newbridge enter into an agreement (the "Exchange Agreement") pursuant to which they agree
that all outstanding Unit Purchase Options will be exchanged for securities or cash or a combination of both, then Holder shall agree to such exchange and become a party to the Exchange Agreement. 

[Balance
of page intentionally left blank] 

11

 

        IN
WITNESS WHEREOF, the Company has caused this Unit Purchase Option to be signed by its duly authorized officer as of the    day of            , 2004. 

	 	 	COASTAL BANCSHARES ACQUISITION CORP.
	

 	
 	

By:	
 	

  

	 	 	 	 	Name:	 	 
	 	 	 	 	Title:	 	 

12

 

Form To Be Used To Exercise Unit Purchase Option  

Coastal
Bancshares Acquisition Corp.

9821 Katy Freeway

Suite 500

Houston, TX 77024 

Date:                        ,
200  

        The
undersigned hereby elects irrevocably to exercise all or a portion of the within Unit Purchase Option and to purchase            Units of Coastal Bancshares Acquisition Corp.
and hereby makes payment of $                        (at the rate of
$                        per Unit) in payment of the Exercise Price pursuant thereto. Please issue the Common Stock and Warrants
as to which this
Unit Purchase Option is exercised in accordance with the instructions given below. 

or

        The
undersigned hereby elects irrevocably to convert its right to purchase                        Units purchasable under the within
Unit Purchase Option by surrender of the unexercised portion
of the attached Unit Purchase Option (with a "Value" based of $            based on a "Market Price" of $            ). Please
issue the securities comprising the Units as to which this Unit
Purchase Option is exercised in accordance with the instructions given below. 

	 	 	  
 Signature
	

 	
 	

  
 Signature Guaranteed

INSTRUCTIONS
FOR REGISTRATION OF SECURITIES 

	Name	 	  
 (Print in Block Letters)

	Address	 	  

NOTICE:
THE SIGNATURE TO THIS FORM MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE WITHIN UNIT PURCHASE OPTION IN EVERY PARTICULAR WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE
WHATSOEVER, AND MUST BE GUARANTEED BY A BANK, OTHER THAN A SAVINGS BANK, OR BY A TRUST COMPANY OR BY A FIRM HAVING MEMBERSHIP ON A REGISTERED NATIONAL SECURITIES EXCHANGE. 

13

 

Form To Be Used To Assign Unit Purchase Option  

ASSIGNMENT

(To
be executed by the registered Holder to effect a transfer of the within Unit Purchase Option) 

        FOR
VALUE RECEIVED,                        does hereby sell, assign and transfer
unto                        the right to
purchase                        Units of Coastal Bancshares Acquisition Corp. (the
"Company") evidenced by the within Unit Purchase Option and does hereby authorize the Company to transfer such right on the books of the Company. 

Dated:            ,
200            

	 	 	  
 Signature
	

 	
 	

  
 Signature Guaranteed

NOTICE:
THE SIGNATURE TO THIS FORM MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE WITHIN UNIT PURCHASE OPTION IN EVERY PARTICULAR WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE
WHATSOEVER, AND MUST BE GUARANTEED BY A BANK, OTHER THAN A SAVINGS BANK, OR BY A TRUST COMPANY OR BY A FIRM HAVING MEMBERSHIP ON A REGISTERED NATIONAL SECURITIES EXCHANGE. 

14

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Exhibit 4.4QuickLinks
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Exhibit 4.5    
    

WARRANT AGREEMENT  

        Agreement made as of                        , 2004 between Coastal
Bancshares Acquisition Corp., a Delaware corporation, with offices at 9821 Katy Freeway, Suite 500,
Houston, Texas ("Company"), and American Stock Transfer & Trust Company, a New York corporation, with offices at 59 Maiden Lane, New York, New York 10038 ("Warrant Agent"). 

        WHEREAS,
the Company is engaged in a public offering ("Public Offering") of Units ("Units") and, in connection therewith, has determined to issue and deliver up to (i) 9,600,000
Warrants ("Public Warrants") to the public investors, and (ii) 600,000 Warrants to Newbridge Securities Corporation and I-Bankers Securities Incorporated (collectively, the
"Representatives") or their designees ("Representative's Warrants" and, together with the Public Warrants, the "Warrants"), each of such Public Warrants evidencing the right of the holder thereof to
purchase one share of common stock, par value $0.01 per share, of the Company's Common Stock ("Common Stock") for $5.00, subject to adjustment as described herein; and 

        WHEREAS,
the Company has filed with the Securities and Exchange Commission a Registration Statement, No. 333-118294 on Form S-1 ("Registration
Statement") for the registration, under the Securities Act of 1933, as amended ("Act") of, among other securities, the Warrants and the Common Stock issuable upon exercise of the Warrants; and 

        WHEREAS,
the Company desires the Warrant Agent to act on behalf of the Company, and the Warrant Agent is willing to so act, in connection with the issuance, registration, transfer,
exchange, redemption and exercise of the Warrants; and 

        WHEREAS,
the Company desires to provide for the form and provisions of the Warrants, the terms upon which they shall be issued and exercised, and the respective rights, limitation of
rights, and immunities of the Company, the Warrant Agent, and the holders of the Warrants; and 

        WHEREAS,
all acts and things have been done and performed which are necessary to make the Warrants, when executed on behalf of the Company and countersigned by or on behalf of the
Warrant
Agent, as provided herein, the valid, binding and legal obligations of the Company, and to authorize the execution and delivery of this Agreement. 

        NOW,
THEREFORE, in consideration of the mutual agreements herein contained, the parties hereto agree as follows: 

1.    Appointment of Warrant Agent.    The Company hereby appoints the Warrant Agent to act as agent for the Company for the
Warrants, and the Warrant Agent hereby accepts such appointment and agrees to perform the same in accordance with the terms and conditions set forth in this Agreement. 

2.    Warrants.    

        2.1    Form of Warrant.    Each Warrant shall be issued in registered form only, shall be in substantially the form of
Exhibit A hereto, the provisions of which are incorporated herein and shall be signed by, or bear the facsimile signature of, the Chief Executive Officer, Chairman of the Board or President and
Treasurer, Secretary or Assistant Secretary of the Company and shall bear a facsimile of the Company's seal. In the event the person whose facsimile signature has been placed upon any Warrant shall
have ceased to serve in the capacity in which such person signed the Warrant before such Warrant is issued, it may be issued with the same effect as if he or she had not ceased to be such at the date
of issuance. 

        2.2    Effect of Countersignature.    Unless and until countersigned by the Warrant Agent pursuant to this Agreement,
a Warrant shall be invalid and of no effect and may not be exercised by the holder thereof. 

        2.3    Registration.    

        2.3.1    Warrant Register.    The Warrant Agent shall maintain books ("Warrant Register"), for the registration of
original issuance and the registration of transfer of the Warrants. Upon the initial issuance of the Warrants, the Warrant Agent shall issue and register the Warrants in the names of the respective
holders thereof in such denominations and otherwise in accordance with instructions delivered to the Warrant Agent by the Company. 

        2.3.2    Registered Holder.    Prior to due presentment for registration of transfer of any Warrant, the Company and
the Warrant Agent may deem and treat the person in whose name such Warrant shall be registered upon the Warrant Register ("registered holder"), as the absolute owner of such Warrant and of each
Warrant represented thereby (notwithstanding any notation of ownership or other writing on the Warrant Certificate made by anyone other than the Company or the Warrant Agent), for the purpose of any
exercise thereof, and for all other purposes, and neither the Company nor the Warrant Agent shall be affected by any notice to the contrary. 

        2.4    Detachability of Warrants.    The securities comprising the Units will not be separately transferable until
90 days after the date hereof unless the Representatives inform the Company of their decision to allow earlier separate trading, but in no event will the Representatives allow separate trading
of the securities comprising the Units until the Company files a Current Report on Form 8-K which includes an audited balance sheet reflecting the receipt by the Company of the
gross proceeds of the Public Offering including the proceeds received by the Company from the exercise of the Underwriter's over-allotment option, if the over-allotment option
is exercised prior to the filing of the Form 8-K. 

        2.5    Warrants and Representative's Warrants.    The Representative's Warrants shall have the same terms and be in
the same form as the Public Warrants except with respect to the Warrant Price as set forth below in Section 3.1. 

3.    Terms and Exercise of Warrants    

        3.1    Warrant Price.    Each Public Warrant shall, when countersigned by the Warrant Agent, entitle the registered
holder thereof, subject to the provisions of such Public Warrant and of this Warrant Agreement, to purchase from the Company the number of shares of Common Stock stated therein, at the price of $5.00
per whole share, subject to the adjustments provided in Section 4 hereof and in the last sentence of this Section 3.1. Each Representative's Warrant shall, when countersigned by the
Warrant Agent, entitle the registered holder thereof, subject to the provisions of such Representative's Warrant and of this Warrant Agreement, to purchase from the Company the number of shares of
Common Stock stated therein, at the price of $6.00 per whole share, subject to the adjustments provided in Section 4 hereof. The term "Warrant Price" as used in this Warrant Agreement refers to
the price per share at which Common Stock may be purchased at the time a Warrant is exercised. The Company in its sole discretion may lower the Warrant Price at any time prior to the Expiration Date. 

        3.2    Duration of Warrants.    A Warrant may be exercised only during the period ("Exercise Period") commencing on
the later of the consummation by the Company of a merger, capital stock exchange, asset acquisition or other similar business combination ("Business Combination") (as described more fully in the
Company's Registration Statement) or                        , 2005, and terminating at 5:00 p.m., New York City time on the
earlier to occur of (i)                         , 2009 or (ii) the date
fixed for redemption of the Warrants as provided in Section 6 of this Agreement ("Expiration Date"). Except with respect to the right to receive the Redemption Price (as set forth in
Section 6 hereunder), each Warrant not exercised on or before the Expiration Date shall become void, and all rights thereunder and all rights in respect thereof under this Agreement shall cease
at the close of business on the Expiration Date. The Company in its sole discretion may extend the duration of the Warrants by delaying the Expiration Date. 

        3.3    Exercise of Warrants.    

        3.3.1    Payment.    Subject to the provisions of the Warrant and this Warrant Agreement, a Warrant, when
countersigned by the Warrant Agent, may be exercised by the registered holder thereof by surrendering it, at the office of the Warrant Agent, or at the office of its successor as Warrant Agent, in the
Borough of Manhattan, City and State of New York, with the subscription form, as set forth in the Warrant, duly executed, and by paying in full, in lawful money of the United States, in good certified
check or good bank draft payable to the order of the Company (or as otherwise agreed to by the Company), the Warrant Price for each full share of Common Stock as to which the Warrant is exercised and
any and all applicable taxes due in connection with the exercise of the Warrant, the exchange of the Warrant for the Common Stock, and the issuance of the Common Stock. 

        3.3.2    Issuance of Certificates.    As soon as practicable after the exercise of any Warrant and the clearance of
the funds in payment of the Warrant Price, the Company shall issue to the registered holder of such Warrant a certificate or certificates for the number of full shares of Common Stock to which he is
entitled, registered in such name or names as may be directed by him, her or it, and if such Warrant shall not have been exercised in full, a new countersigned Warrant for the number of shares as to
which such Warrant shall not have been exercised. Notwithstanding the foregoing, the Company shall not be obligated to deliver any securities pursuant to the exercise of a Warrant unless a
registration statement under the Act with respect to the Common Stock is effective. Warrants may not be exercised by, or securities issued to, any registered holder in any state in which such exercise
would be unlawful. 

        3.3.3    Valid Issuance.    All shares of Common Stock issued upon the proper exercise of a Warrant in conformity with
this Agreement shall be validly issued, fully paid and nonassessable. 

        3.3.4    Date of Issuance.    Each person in whose name any such certificate for shares of Common Stock is issued
shall for all purposes be deemed to have become the holder of record of such shares on the date on which the Warrant was surrendered and payment of the Warrant Price was made, irrespective of the
date of delivery of such certificate, except that, if the date of such surrender and payment is a date when the stock transfer books of the Company are closed, such person shall be deemed to have
become the holder of such shares at the close of business on the next succeeding date on which the stock transfer books are open. 

        3.3.5    Warrant Solicitation and Warrant Solicitation Fee.    

        a.     The
Company has engaged the Representatives, on a non-exclusive basis, as its agents for the solicitation of the exercise of the Warrants. The Company, at its
cost, will (i) assist the Representatives with respect to such solicitation, if requested by the Representatives, and (ii) provide the Representatives, and direct the Company's transfer
agent and the Warrant Agent to deliver to the Representatives, lists of the record and, to the extent known, beneficial owners of the Company's Warrants. The Company hereby instructs the Warrant Agent
to cooperate with the Representatives in every respect in connection with the Representatives' solicitation activities, including, but not limited to, providing to the Representatives, at the
Company's cost, a list of record holders of the Warrants and circulating a prospectus or offering circular disclosing the compensation arrangements referenced in Section 3.3.5(b) below to
holders of the Warrants at the time of exercise of the Warrants. In addition to the conditions set forth in Section 3.3.5(b), the Representatives shall accept payment of the warrant
solicitation fee provided in Section 3.3.5(b) only if they have provided bona fide services to the Company in connection with the exercise of the Warrants and only to the extent that an
investor who exercises his Warrants specifically designates, in writing, that the Representatives solicited his exercise. In addition to soliciting, either orally or in writing, the exercise of
Warrants by a Warrant holder, such services may also include disseminating information, either orally or in writing, to Warrant holders about the Company or the market for the Company's securities, or
assisting in the processing of the exercise of Warrants. 

        b.     In
each instance in which a Warrant is exercised, the Warrant Agent shall promptly give written notice of such exercise to the Company and the Representatives ("Warrant
Agent's Exercise Notice"). If, upon the exercise of any Warrant more than one year from the effective date of the Registration Statement, (i) the market price of the Company's Common Stock is
greater than the Warrant Price, (ii) disclosure of compensation arrangements between the Company and the Representatives with respect to the solicitation of the exercise of the Warrants was
made both at the time of the Public Offering and at the time of exercise (by delivery of the Prospectus or as otherwise required by applicable law, rule or regulation), (iii) the holder of the
Warrant confirms in writing that the exercise of the Warrant was solicited by the Representatives, (iv) the Warrant was not held in a discretionary account, and (v) the solicitation of
the exercise of the Warrant was not in violation of Regulation M (as such rule or any successor rule may be in effect as of such time of exercise) promulgated under the Securities Exchange Act
of 1934, as amended, then the Warrant Agent, simultaneously with the distribution of the Common Stock underlying the Warrants so exercised in accordance with the instructions from the Company
following receipt of the proceeds to the Company received upon exercise of such Warrant(s), shall, on behalf of the Company, pay a fee of 5% of the Warrant Price to the Representatives, provided that
the Representatives deliver to the Warrant Agent within ten (10) business days from the date on which the Representatives have received the Warrant Agent's
Exercise Notice, a certificate that the conditions set forth the preceding clauses (iii), (iv) and (v) have been satisfied. Notwithstanding the foregoing, no fee will be paid to the
Representatives with respect to the exercise by the Underwriters or their affiliates or the Company's officers or directors of Warrants purchased by it or them upon exercise of the Representative's
Warrants and still held by any of the Underwriters or them for its or their own account. The Representatives and the Company may at any time during business hours, examine the records of the Warrant
Agent, including its ledger of original Warrant certificates returned to the Warrant Agent upon exercise of Warrants. 

        c.     The
provisions of this Section 3.3.5. may not be modified, amended or deleted without the prior written consent of the Representatives. 

4.    Adjustments.    

        4.1    Stock Dividends—Split-Ups.    If after the date hereof, and subject to the provisions
of Section 4.6 below, the number of outstanding shares of Common Stock is increased by a stock dividend payable in shares of Common Stock, or by a split-up of shares of Common
Stock, or other similar event, then, on the effective date of such stock dividend, split-up or similar event, the number of shares of Common Stock issuable on exercise of each Warrant
shall be increased in proportion to such increase in outstanding shares of Common Stock. 

        4.2    Aggregation of Shares.    If after the date hereof, and subject to the provisions of Section 4.6, the
number of outstanding shares of Common Stock is decreased by a consolidation, combination, reverse stock split or reclassification of shares of Common Stock or other similar event, then, on the
effective date of such consolidation, combination, reverse stock split, reclassification or similar event, the number of shares of Common Stock issuable on exercise of each Warrant shall be decreased
in proportion to such decrease in outstanding shares of Common Stock. 

        4.3    Adjustments in Exercise Price.    Whenever the number of shares of Common Stock purchasable upon the exercise
of the Warrants is adjusted, as provided in Section 4.1 and 4.2 above, the Warrant Price shall be adjusted (to the nearest cent) by multiplying such Warrant Price immediately prior to such
adjustment by a fraction (x) the numerator of which shall be the number of shares of Common Stock purchasable upon the exercise of the Warrants immediately prior to such adjustment, and
(y) the denominator of which shall be the number of shares of Common Stock so purchasable immediately thereafter. 

        4.4    Replacement of Securities upon Reorganization, etc.    In case of any reclassification or reorganization of the
outstanding shares of Common Stock (other than a change covered by Section 4.1 

or
4.2 hereof or that solely affects the par value of such shares of Common Stock), or in the case of any merger or consolidation of the Company with or into another corporation (other than a
consolidation or merger in which the Company is the continuing corporation and that does not result in any reclassification or reorganization of the outstanding shares of Common Stock), or in the case
of any sale or conveyance to another corporation or entity of the assets or other property of the Company as an entirety or substantially as an entirety in connection with which the Company is
dissolved, the Warrant holders shall thereafter have the right to purchase and receive, upon the basis and upon the terms and conditions specified in the Warrants and in lieu of the shares of Common
Stock of the Company immediately theretofore purchasable and receivable upon the exercise of the rights represented thereby, the kind and amount of shares of stock or other securities or property
(including cash) receivable upon such reclassification, reorganization, merger or consolidation, or upon a dissolution following any such sale or transfer, that the Warrant holder would have received
if such Warrant holder had exercised his, her or its Warrant(s) immediately prior to such event; and if any reclassification also results in a change in shares of Common Stock covered by
Section 4.1 or 4.2, then such adjustment shall be made pursuant to Sections 4.1, 4.2, 4.3 and this Section 4.4. The provisions of this Section 4.4 shall similarly apply to
successive reclassifications, reorganizations, mergers or consolidations, sales or other transfers. 

        4.5    Notices of Changes in Warrant.    Upon every adjustment of the Warrant Price or the number of shares issuable
upon exercise of a Warrant, the Company shall give written notice thereof to the Warrant Agent, which notice shall state the Warrant Price resulting from such adjustment and the increase or decrease,
if any, in the number of shares purchasable at such price upon the exercise of a Warrant, setting forth in reasonable detail the method of calculation and the facts upon which such calculation is
based. Upon the occurrence of any event specified in Sections 4.1, 4.2, 4.3 or 4.4, then, in any such event, the Company shall give written notice to the Warrant holder, at the last address set forth
for such holder in the warrant register, of the record date or the effective date of the event. Failure to give such notice, or any defect therein, shall not affect the legality or validity of such
event. 

        4.6    No Fractional Shares.    Notwithstanding any provision contained in this Warrant Agreement to the contrary, the
Company shall not issue fractional shares upon exercise of Warrants. If, by reason of any adjustment made pursuant to this Section 4, the holder of any Warrant would be entitled, upon the
exercise of such Warrant, to receive a fractional interest in a share, the Company shall, upon such exercise, round up to the nearest whole number the number of the shares of Common Stock to be issued
to the Warrant holder. 

        4.7    Form of Warrant.    The form of Warrant need not be changed because of any adjustment pursuant to this
Section 4, and Warrants issued after such adjustment may state the same Warrant Price and the same number of shares as is stated in the Warrants initially issued pursuant to this Agreement.
However, the Company may at any time in its sole discretion make any change in the form of Warrant that the Company may deem appropriate and that does not affect the substance thereof, and any
Warrant thereafter issued or countersigned, whether in exchange or substitution for an outstanding Warrant or otherwise, may be in the form as so changed. 

5.    Transfer and Exchange of Warrants.    

        5.1    Registration of Transfer.    The Warrant Agent shall register the transfer, from time to time, of any
outstanding Warrant upon the Warrant Register, upon surrender of such Warrant for transfer, properly endorsed with signatures properly guaranteed and accompanied by appropriate instructions for
transfer. Upon any such transfer, a new Warrant representing an equal aggregate number of Warrants shall be issued and the old Warrant shall be cancelled by the Warrant Agent. The Warrants so
cancelled shall be delivered by the Warrant Agent to the Company from time to time upon request. 

        5.2    Procedure for Surrender of Warrants.    Warrants may be surrendered to the Warrant Agent, together with a
written request for exchange or transfer, and thereupon the Warrant Agent shall issue in exchange therefor one or more new Warrants as requested by the registered holder of the Warrants so
surrendered, representing an equal aggregate number of Warrants; provided, however, that in the event that a Warrant surrendered for transfer bears a restrictive legend, the Warrant Agent shall not 

cancel
such Warrant and issue new Warrants in exchange therefor until the Warrant Agent has received an opinion of counsel for the Company stating that such transfer may be made and indicating whether
the new Warrants must also bear a restrictive legend. 

        5.3    Fractional Warrants.    The Warrant Agent shall not be required to effect any registration of transfer or
exchange which will result in the issuance of a warrant certificate for a fraction of a warrant. 

        5.4    Service Charges.    No service charge shall be made for any exchange or registration of transfer of Warrants. 

        5.5    Warrant Execution and Countersignature.    The Warrant Agent is hereby authorized to countersign and to
deliver, in accordance with the terms of this Agreement, the Warrants required to be issued pursuant to the provisions of this Section 5, and the Company, whenever required by the Warrant
Agent, will supply the Warrant Agent with Warrants duly executed on behalf of the Company for such purpose. 

6.    Redemption.    

        6.1    Redemption.    Subject to Section 6.4 hereof, with the prior consent of the Representatives, not less
than all of the outstanding Warrants may be redeemed, at the option of the Company, at any time after they become exercisable and prior to their expiration, at the office of the Warrant Agent, upon
the notice referred to in Section 6.2., at the price of $.01 per Warrant ("Redemption Price"), provided that the last sales price of the Common Stock has been at least $8.50 per share, on each
of twenty (20) trading days within any thirty (30) trading day period ending on the third business day prior to the date on which notice of redemption is given. The provisions of this
Section 6.1 may not be modified, amended or deleted without the prior written consent of the Representatives. 

        6.2    Date Fixed for, and Notice of, Redemption.    In the event the Company shall elect to redeem all of the
Warrants, the Company shall fix a date for the redemption. Notice of redemption shall be mailed by first class mail, postage prepaid, by the Company not less than 30 days prior to the date
fixed for redemption to the registered holders of the Warrants to be redeemed at their last addresses as they shall appear on the registration books. Any notice mailed in the manner herein provided
shall be conclusively presumed to have been duly given whether or not the registered holder received such notice. 

        6.3    Exercise After Notice of Redemption.    The Warrants may be exercised in accordance with Section 3 of
this Agreement at any time after notice of redemption shall have been given by the Company pursuant to Section 6.2. hereof and prior to the time and date fixed for redemption. On and after the
redemption date, the record holder of the Warrants shall have no further rights except to receive, upon surrender of the Warrants, the Redemption Price. 

        6.4    Outstanding Warrants Only.    The Company understands that the redemption rights provided for by this
Section 6 apply only to outstanding Warrants. To the extent a person holds rights to purchase Warrants, such purchase rights shall not be extinguished by redemption. However, once such purchase
rights are exercised, the Company may redeem the Warrants issued upon such exercise provided that the criteria for redemption is met. The provisions of this Section 6.4 may not be modified,
amended or deleted without the prior written consent of the Representatives. 

7.    Other Provisions Relating to Rights of Holders of Warrants.    

        7.1    No Rights as Stockholder.    A Warrant does not entitle the registered holder thereof to any of the rights of a
stockholder of the Company, including, without limitation, the right to receive dividends, or other distributions, exercise any preemptive rights to vote or to consent or to receive notice as
stockholders in respect of the meetings of stockholders or the election of directors of the Company or any other matter. 

        7.2    Lost, Stolen, Mutilated, or Destroyed Warrants.    If any Warrant is lost, stolen, mutilated, or destroyed, the
Company and the Warrant Agent may on such terms as to indemnity or otherwise as they may in their discretion impose (which shall, in the case of a mutilated Warrant, include the 

surrender
thereof), issue a new Warrant of like denomination, tenor, and date as the Warrant so lost, stolen, mutilated, or destroyed. Any such new Warrant shall constitute a substitute contractual
obligation of the Company, whether or not the allegedly lost, stolen, mutilated, or destroyed Warrant shall be at any time enforceable by anyone. 

        7.3    Reservation of Common Stock.    The Company shall at all times reserve and keep available a number of its
authorized but unissued shares of Common Stock that will be sufficient to permit the exercise in full of all outstanding Warrants issued pursuant to this Agreement. 

        7.4    Registration of Common Stock.    The Company agrees that prior to the commencement of the Exercise Period, it
shall file with the Securities and Exchange Commission a post-effective amendment to the Registration Statement, or a new registration statement, for the registration, under the Act, of,
and it shall take such action as is necessary to qualify for sale, in those states in which the Warrants were initially offered by the Company, the Common Stock issuable upon exercise of the Warrants.
In either case, the Company will use its best efforts to cause the same to become effective and to maintain the effectiveness of such registration statement until the expiration of the Warrants in
accordance with the provisions of this Agreement. The provisions of this Section 7.4 may not be modified, amended or deleted without the prior written consent of the Representatives. 

8.    Concerning the Warrant Agent and Other Matters.    

        8.1    Payment of Taxes.    The Company will from time to time promptly pay all taxes and charges that may be imposed
upon the Company or the Warrant Agent in respect of the issuance or delivery of shares of Common Stock upon the exercise of Warrants, but the Company shall not be obligated to pay any transfer taxes
in respect of the Warrants or such shares. 

        8.2    Resignation, Consolidation, or Merger of Warrant Agent.    

        8.2.1    Appointment of Successor Warrant Agent.    The Warrant Agent, or any successor to it hereafter appointed, may
resign its duties and be discharged from all further duties and liabilities hereunder after giving sixty (60) days' notice in writing to the Company. If the office of the Warrant Agent becomes
vacant by resignation or incapacity to act or otherwise, the Company shall appoint in writing a successor Warrant Agent in place of the Warrant Agent. If the Company shall fail to make such
appointment within a period of 30 days after it has been notified in writing of such resignation or
incapacity by the Warrant Agent or by the holder of the Warrant (who shall, with such notice, submit his Warrant for inspection by the Company), then the holder of any Warrant may apply to the Supreme
Court of the State of New York for the County of New York for the appointment of a successor Warrant Agent at the Company's cost. Any successor Warrant Agent, whether appointed by the Company or by
such court, shall be a corporation organized and existing under the laws of the State of New York, in good standing and having its principal office in the Borough of Manhattan, City and State of New
York, and authorized under such laws to exercise corporate trust powers and subject to supervision or examination by federal or state authority. After appointment, any successor Warrant Agent shall be
vested with all the authority, powers, rights, immunities, duties, and obligations of its predecessor Warrant Agent with like effect as if originally named as Warrant Agent hereunder, without any
further act or deed; but if for any reason it becomes necessary or appropriate, the predecessor Warrant Agent shall execute and deliver, at the expense of the Company, an instrument transferring to
such successor Warrant Agent all the authority, powers, and rights of such predecessor Warrant Agent hereunder; and upon request of any successor Warrant Agent the Company shall make, execute,
acknowledge, and deliver any and all instruments in writing for more fully and effectually vesting in and confirming to such successor Warrant Agent all such authority, powers, rights, immunities,
duties, and obligations. 

        8.2.2    Notice of Successor Warrant Agent.    In the event a successor Warrant Agent shall be appointed, the Company
shall give notice thereof to the predecessor Warrant Agent and the transfer agent for the Common Stock not later than the effective date of any such appointment. 

        8.2.3    Merger or Consolidation of Warrant Agent.    Any corporation into which the Warrant Agent may be merged or
with which it may be consolidated or any corporation resulting from any merger or consolidation to which the Warrant Agent shall be a party shall be the successor Warrant Agent under this Agreement
without any further act. 

        8.3    Fees and Expenses of Warrant Agent.    

        8.3.1    Remuneration.    The Company agrees to pay the Warrant Agent reasonable remuneration for its services as such
Warrant Agent hereunder and will reimburse the Warrant Agent upon demand for all expenditures that the Warrant Agent may reasonably incur in the execution of its duties hereunder. 

        8.3.2    Further Assurances.    The Company agrees to perform, execute, acknowledge, and deliver or cause to be
performed, executed, acknowledged, and delivered all such further and other acts, instruments, and assurances as may reasonably be required by the Warrant Agent for the carrying out or performing of
the provisions of this Agreement. 

        8.4    Liability of Warrant Agent.    

        8.4.1    Reliance on Company Statement.    Whenever in the performance of its duties under this Warrant Agreement, the
Warrant Agent shall deem it necessary or desirable that any fact or matter be proved or established by the Company prior to taking or suffering any action hereunder, such fact or matter (unless other
evidence in respect thereof be herein specifically prescribed) may be deemed to be conclusively proved and established by a statement signed by the Chief Executive Officer, President or Chairman of
the Board of the Company and delivered to the Warrant Agent. The Warrant Agent may rely upon such statement for any action taken or suffered in good faith by it pursuant to the provisions of this
Agreement. 

        8.4.2    Indemnity.    The Warrant Agent shall be liable hereunder only for its own negligence, willful misconduct or
bad faith. The Company agrees to indemnify the Warrant Agent and save it harmless against any and all liabilities, including judgments, costs and reasonable counsel fees, for anything done or omitted
by the Warrant Agent in the execution of this Agreement except as a result of the Warrant Agent's negligence, willful misconduct, or bad faith. 

        8.4.3    Exclusions.    The Warrant Agent shall have no responsibility with respect to the validity of this Agreement
or with respect to the validity or execution of any Warrant (except its countersignature thereof); nor shall it be responsible for any breach by the Company of any covenant or condition contained in
this Agreement or in any Warrant; nor shall it be responsible to make any adjustments required under the provisions of Section 4 hereof or responsible for the manner, method, or amount of any
such adjustment or the ascertaining of the existence of facts that would require any such adjustment; nor shall it by any act hereunder be deemed to make any representation or warranty as to the
authorization or reservation of any shares of Common Stock to be issued pursuant to this Agreement or any Warrant or as to whether any shares of Common Stock will when issued be valid and fully paid
and nonassessable. 

        8.5    Acceptance of Agency.    The Warrant Agent hereby accepts the agency established by this Agreement and agrees
to perform the same upon the terms and conditions herein set forth and among other things, shall account promptly to the Company with respect to Warrants exercised and concurrently account for, and
pay to the Company, all moneys received by the Warrant Agent for the purchase of shares of the Company's Common Stock (less any warrant solicitation fee due to the Representatives pursuant to
Section 3.3.5 herein) through the exercise of Warrants. 

9.    Miscellaneous Provisions.    

        9.1    Successors.    All the covenants and provisions of this Agreement by or for the benefit of the Company or the
Warrant Agent shall bind and inure to the benefit of their respective successors and assigns. 

        9.2    Notices.    Any notice, statement or demand authorized by this Warrant Agreement to be given or made by the
Warrant Agent or by the holder of any Warrant to or on the Company shall be sufficiently given when so delivered if by hand or overnight delivery or if sent by certified mail or private courier
service within five days after deposit of such notice, postage prepaid, addressed (until another address is filed in writing by the Company with the Warrant Agent), as follows: 

Coastal
Bancshares Acquisition Corp.

9821 Katy Freeway

Suite 500

Houston, TX 77024

Attn: Chief Executive Officer 

Any
notice, statement or demand authorized by this Agreement to be given or made by the holder of any Warrant or by the Company to or on the Warrant Agent shall be sufficiently given when so delivered
if by hand or overnight delivery or if sent by certified mail or private courier service within five days after deposit of such notice, postage prepaid, addressed (until another address is filed in
writing by the Warrant Agent with the Company), as follows: 

American
Stock Transfer & Trust Company

59 Maiden Lane

New York, New York 10038

Attn: Compliance Department 

with
a copy in each case to: 

Dilworth
Paxson LLP

1818 N. Street, N.W.

Suite 4000

Washington, DC 20003

Attn: Ralph V. DeMartino, Esq. 

and

Jenkens &
Gilchrist, P.C.

1445 Ross Avenue

Suite 3200

Dallas, Texas 75202

Attn: Ronald J. Frappier, Esq. 

and 

Newbridge
Securities Corporation

1451 West Cypress Creek Road

Fort Lauderdale, Florida 33309

Attn: Guy S. Amico 

I-Bankers
Securities Incorporated

3340 Indian Creek Ct.

Fort Worth, Texas 76180

Attn: Michael McCrory 

        9.3    Applicable law.    The validity, interpretation, and performance of this Agreement and of the Warrants shall be
governed in all respects by the laws of the State of New York, without giving effect to conflict of laws. The Company hereby agrees that any action, proceeding or claim against it arising out of or
relating in any way to this Agreement shall be brought and enforced in the courts of the State of New York or the United States District Court for the Southern District of New York, and irrevocably
submits to such jurisdiction, which jurisdiction shall be exclusive. The Company hereby waives any objection to such exclusive jurisdiction and that such courts represent an inconvenient forum. Any
such process or summons to be served upon the Company may be served by transmitting a copy thereof by 

registered
or certified mail, return receipt requested, postage prepaid, addressed to it at the address set forth in Section 9.2 hereof. Such mailing shall be deemed personal service and shall
be legal and binding upon the Company in any action, proceeding or claim. 

        9.4    Persons Having Rights under this Agreement.    Nothing in this Agreement expressed and nothing that may be
implied from any of the provisions hereof is intended, or shall be construed, to confer upon, or give to, any person or corporation other than the parties hereto and the registered holders of the
Warrants and, for the purposes of Sections 3.3.5, 6.1, 6.4, 7.4 and 9.2 hereof, the Representatives, any
right, remedy, or claim under or by reason of this Warrant Agreement or of any covenant, condition, stipulation, promise, or agreement hereof. The Representatives shall be deemed to be a third-party
beneficiary of this Agreement with respect to Sections 3.3.5, 6.1, 6.4, 7.4 and 9.2 hereof. All covenants, conditions, stipulations, promises, and agreements contained in this Warrant Agreement shall
be for the sole and exclusive benefit of the parties hereto (and the Representatives with respect to the Sections 3.3.5, 6.1, 6.4, 7.4 and 9.2 hereof) and their successors and assigns and of the
registered holders of the Warrants. 

        9.5    Examination of the Warrant Agreement.    A copy of this Agreement shall be available at all reasonable times at
the office of the Warrant Agent in the Borough of Manhattan, City and State of New York, for inspection by the registered holder of any Warrant. The Warrant Agent may require any such holder to submit
his Warrant for inspection by it. 

        9.6    Counterparts.    This Agreement may be executed in any number of counterparts and each of such counterparts
shall for all purposes be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument. 

        9.7    Effect of Headings.    The Section headings herein are for convenience only and are not part of this Warrant
Agreement and shall not affect the interpretation thereof. 

        IN
WITNESS WHEREOF, this Agreement has been duly executed by the parties hereto as of the day and year first above written. 

	Attest:	 	COASTAL BANCSHARES ACQUISITION CORP.
	

 
	
 	

By:	
 	

 
 Cary M. Grossman,
 Co-Chief Executive Officer
	

Attest:	
 	

AMERICAN STOCK TRANSFER & TRUST COMPANY
	

 
	
 	

By:	
 	

 

	 	 	Name:	 	 

	 	 	Title:	 	 

QuickLinks

Exhibit 4.5

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00072-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00072-of-00352.parquet"}]]