Document:

EXHIBIT 10.1

 

Exhibit 10.1

May 20, 2005

Platinum Underwriters Holdings, Ltd.

Platinum Underwriters Finance, Inc.

Series A 7.50% Notes due June 1, 2017

Purchase Agreement

May 20, 2005

Goldman, Sachs & Co.

85 Broad Street,

New York, New York 10004.

Ladies and Gentlemen:

     Platinum Underwriters Finance, Inc., a Delaware corporation (“Platinum Finance”) proposes,
subject to the terms and conditions stated herein, to issue and sell to Goldman, Sachs & Co. (the
“Purchaser”) an aggregate of $250,000,000 principal amount of its Series A 7.50% Notes due June 1,
2017 (the “Securities”), unconditionally guaranteed (the “Guarantees”) by Platinum Underwriters
Holdings, Ltd., a Bermuda company (the “Company”), on a senior, unsecured basis. The Securities
and the Guarantees will be issued pursuant to an Indenture, to be dated May 26, 2005 (the “Base
Indenture”), among the Company, Platinum Finance and JPMorgan Chase Bank, N.A. as Trustee (the
“Trustee”), as supplemented by the First Supplemental Indenture, to be dated May 26, 2005 (the
“First Supplemental Indenture” and, together with the Base Indenture, the “Indenture”) among the
Company, Platinum Finance and the Trustee as the same will be amended by a Series B Supplemental
Indenture (the “Series B Supplemental Indenture”) to be entered into among the Company, Platinum
Finance and the Trustee, in relation to the Exchange Securities (as defined in Section 5(d)).

     The Company conducts its business through its wholly-owned direct or indirect operating
subsidiaries, Platinum Underwriters Reinsurance, Inc., a Maryland corporation (“Platinum US”),
Platinum Re (UK) Limited, a U.K. company (“Platinum UK”), and Platinum Underwriters Bermuda, Ltd.,
a Bermuda company (“Platinum Bermuda”). The Company owns Platinum US and Platinum UK through its
wholly-owned intermediate subsidiary, Platinum Regency Holdings, an Irish company (“Platinum
Ireland” and, together with Platinum UK and Platinum Bermuda, the “Non-U.S. Subsidiaries”).
Platinum US is owned directly by Platinum Finance, which is a wholly-owned subsidiary of Platinum
Ireland.

[Senior Notes Purchase Agreement]

 

 

     1. The Company and Platinum Finance, jointly and severally, represent and warrant to, and
agree with the Purchaser that:

     (a) A preliminary offering circular, dated May 16, 2005 (the “Preliminary Offering
Circular”) and an offering circular, dated May 20, 2005 (the “Offering Circular”), which
incorporate by reference the Company’s Annual Report on Form 10-K for the fiscal year ended
December 31, 2004 (including information specifically incorporated by reference into such
Form 10-K from the Company’s definitive Proxy Statement for its 2005 annual meeting of
shareholders) (the “Form 10-K”) and Quarterly Report on Form 10-Q for the quarter ended
March 31, 2005, have been prepared in connection with the offering of the Securities and the
Guarantees. Any reference to the Preliminary Offering Circular or the Offering Circular
shall be deemed to refer to and include the Company’s most recent Annual Report on Form 10-K
and all subsequent documents filed with (but not furnished to) the United States Securities
and Exchange Commission (the “Commission”) pursuant to Section 13(a), 13(c) or 15(d) of the
United States Securities Exchange Act of 1934, as amended (the “Exchange Act”) on or prior
to the date of the Preliminary Offering Circular or the Offering Circular, as the case may
be. Any reference to the Preliminary Offering Circular or the Offering Circular, as the
case may be, as amended or supplemented, as of any specified date, shall be deemed to
include (i) any documents filed with the Commission pursuant to Section 13(a), 13(c) or
15(d) of the Exchange Act after the date of the Preliminary Offering Circular or the
Offering Circular, as the case may be, and prior to such specified date; provided, however,
such subsequently filed documents shall not include any Current Reports on Form 8-K, or
portions of such reports, that are deemed to be furnished to, rather than filed with, the
Commission and (ii) any Additional Issuer Information (as defined in Section 5(f)) furnished
by the Company prior to the completion of the distribution of the Securities; and all
documents filed under the Exchange Act and so deemed to be included in the Preliminary
Offering Circular or the Offering Circular, as the case may be, or any amendment or
supplement thereto are hereinafter called the “Exchange Act Reports”. The Exchange Act
Reports, when they were or are filed with the Commission, conformed or will conform in all
material respects to the applicable requirements of the Exchange Act and the applicable
rules and regulations of the Commission thereunder. The Preliminary Offering Circular or the
Offering Circular and any amendments or supplements thereto and the Exchange Act Reports did
not and will not, as of their respective dates, contain an untrue statement of a material
fact or omit to state a material fact necessary in order to make the statements therein, in
the light of the circumstances under which they were made, not misleading; provided,
however, that this representation and warranty shall not apply to any statements or
omissions made in reliance upon and in conformity with information furnished in writing to
the Company or Platinum Finance by the Purchaser expressly for use therein;

     (b) Neither the Company nor any of its subsidiaries has sustained since the date of the
latest audited financial statements included, or incorporated by reference, in the Offering
Circular any material loss or interference with its business from fire, explosion, flood or
other calamity, whether or not covered by insurance, or from any labor dispute or court or
governmental action, order or decree, otherwise than as set forth or contemplated in the
Offering Circular; and, since the respective dates as of which information is given in the
Offering Circular, there has not been any change in the capital stock or the capital or
surplus or long-term debt of the Company or Platinum Finance (other than upon exercise of
director or employee options in the ordinary course of business pursuant to an employee
benefit plan of

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the Company currently in existence, or upon the exercise, conversion or exchange of
convertible or exchangeable securities or options in the ordinary course of business
outstanding as of the date of this Agreement or upon the exercise of the purchase contracts
forming a part of the Company’s equity security units in the ordinary course of business
outstanding as of the date of this Agreement) or any of its subsidiaries or any material
adverse change, or any development involving a prospective material adverse change, in or
affecting the general affairs, management, financial position, shareholders’ equity or
results of operations of the Company and its subsidiaries, taken as a whole, otherwise than
as set forth or contemplated in the Offering Circular;

     (c) The Company and its subsidiaries have good and marketable title to all personal
property owned by them, in each case free and clear of all liens, encumbrances and defects
except such as are described in the Offering Circular or such as do not materially affect
the value of such property and do not materially interfere with the use made and proposed to
be made of such property by the Company and its subsidiaries; and any real property and
buildings held under lease by the Company and its subsidiaries are held by them under valid,
subsisting and enforceable (by and against the Company) sub-leases and assignments of leases
with such exceptions as are not material and do not materially interfere with the use made
and proposed to be made of such property and buildings by the Company and its subsidiaries;
the Company does not own any real property;

     (d) The Company has been duly incorporated and is validly existing as a company in good
standing under the laws of Bermuda, with corporate power and authority to own its properties
and conduct its business as described in the Offering Circular, and has been duly qualified
as a foreign corporation for the transaction of business and is in good standing under the
laws of each other jurisdiction in which it owns or leases properties or conducts any
business so as to require such qualification, or is subject to no material liability or
disability by reason of the failure to be so qualified in any such jurisdiction; each
subsidiary of the Company has been duly incorporated and is validly existing as a
corporation or a company in good standing under the laws of its jurisdiction of
organization, with corporate power and authority to own its properties and conduct its
business as described in the Offering Circular, and has been duly qualified as a foreign
corporation for the transaction of business and is in good standing under the laws of each
jurisdiction in which it owns or leases properties or conducts any business so as to require
such qualification, or is subject to no material liability or disability by reason of the
failure to be so qualified in any such jurisdiction;

     (e) The Company has an authorized capitalization as set forth in the Offering Circular,
and all of the issued shares of capital stock of the Company have been duly authorized and
validly issued, are fully paid and non-assessable and conform in all material respects to
the description of the capital stock contained in the Offering Circular; all of the issued
            shares of capital stock of each subsidiary of the Company have been duly authorized and are
validly issued, fully paid and non-assessable and are owned directly or indirectly by the
Company, free and clear of all liens, encumbrances, equities or claims; except as described
in the Form 10-K under the captions “Related Party Transactions—Transactions with St. Paul
and Its Subsidiaries” and “Related Party Transactions—Transactions with RenaissanceRe and
Its Subsidiaries,” and in the Offering Circular under the caption “Description of Our Share
Capital,” the holders of outstanding shares of capital stock of the Company are not entitled
to preemptive or other rights to acquire the Securities and no party has the right to
require the

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Company to register securities; there are no outstanding securities convertible into or
exchangeable for, or warrants, rights or options to purchase from the Company, or
obligations of the Company to issue, Common Shares or any other class of capital stock of
the Company (except upon the exercise of the purchase contracts forming a part of the
Company’s equity security units and as set forth in the Form 10-K under the captions
“Related Party Transactions—Transactions with St. Paul and Its Subsidiaries” and “Related
Party Transactions—Transactions with RenaissanceRe and Its Subsidiaries,” and in the
Offering Circular under the caption “Description of Our Share Capital”); there are no
restrictions on subsequent transfers of the Securities or the Guarantees under the laws of
Bermuda or the United States (other than, pursuant to the securities laws of the United
States or any state securities or Blue Sky laws, by affiliates of the Company and other than
as described in the Offering Circular under the caption “Description of Our Share Capital”);

     (f) The Securities have been duly authorized by Platinum Finance and, when the
Securities are duly executed, authenticated, issued and delivered and paid for by the
Purchaser as provided herein and in the Indenture, the Securities will constitute valid and
legally binding obligations of Platinum Finance, enforceable in accordance with their terms,
subject to bankruptcy, insolvency, fraudulent transfer, reorganization and similar laws of
general applicability relating to or affecting creditors’ rights and to general equity
principles, and will be in the form contemplated by, and will be entitled to the benefits
of, the Indenture; the Securities will conform in all material respects to the description
thereof contained in the Offering Circular and will be in substantially the form previously
delivered to you;

     (g) The Guarantees have been duly authorized by the Company and, upon the due
execution, authentication, issuance and delivery of the Securities and payment therefor by
the Purchaser, as provided herein and in the Indenture, and the due endorsement of the
Guarantees thereon, such Guarantees will have been duly executed and delivered and will
constitute a valid and binding obligation of the Company, enforceable in accordance with its
terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization and similar
laws of general applicability relating to or affecting creditors’ rights and to general
equity principles, and will be in the form contemplated by, and will be entitled to the
benefits of, the Indenture; and the Guarantees will conform in all material respects to the
description thereof contained in the Offering Circular and will be in substantially the form
previously delivered to you;

     (h) The Indenture has been duly authorized by each of Platinum Finance and the Company
and, when executed and delivered by Platinum Finance, the Company, and the Trustee, and
assuming the Indenture is a valid and legally binding obligation of the Trustee, enforceable
against the Trustee in accordance with its terms, will constitute a valid and legally
binding obligation of the Company and Platinum Finance, enforceable against the Company and
Platinum Finance in accordance with its terms, subject, as to enforcement, to bankruptcy,
insolvency, reorganization and other laws of general applicability relating to or affecting
creditors’ rights and to general equity principles; and the Indenture will conform in all
material respects to the description thereof in the Offering Circular and will be in
substantially the form previously delivery to you;

     (i) None of the transactions contemplated by this Agreement and the 2005 Registration
Rights Agreement (including, without limitation, the Guarantees and the use of the proceeds
from the sale of the Securities) will violate or result in a violation of Section 7 of

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the Exchange Act, or any regulation promulgated thereunder, including, without
limitation, Regulations T, U, and X of the Board of Governors of the Federal Reserve System;

     (j) Prior to the date hereof, neither the Company, Platinum Finance, nor any of their
respective affiliates has taken any action which is designed to or which has constituted or
which might have been expected to cause or result in, under the Exchange Act or otherwise,
the stabilization or manipulation of the price of any security of the Company in connection
with the offering of the Securities or facilitate the sale or resale of the Securities and
the Guarantees;

     (k) The issue and sale of the Securities and the Guarantees, the issuance and delivery
of the Exchange Securities and the compliance by Platinum Finance and the Company with all
of the provisions of the Securities, the Exchange Securities (as defined in Section 5(d)
hereof), the Guarantees, the Indenture, this Agreement, the Exchange and Registration Rights
Agreement to be dated as of May 26, 2005 (the “2005 Registration Rights Agreement”), among
Platinum Finance, the Company and the Purchaser, and the Jurisdiction Agreement, dated as of
the date hereof (the “Jurisdiction Agreement”), among Platinum Finance, the Company and the
Purchaser, and the consummation of the transactions herein and therein contemplated will not
conflict with or result in a breach or violation of any of the terms or provisions of, or
constitute a default under, or give rise to a right of termination under (i) the memorandum
of association or bye-laws or other organizational document of the Company or any of its
subsidiaries, (ii) any indenture, mortgage, deed of trust, loan agreement or other agreement
or instrument to which the Company or any of its subsidiaries is a party or by which the
Company or any of its subsidiaries is bound or to which any of the properties or assets of
the Company or any of its subsidiaries is subject, or (iii) any statute or any order, rule
or regulation of any court or governmental agency or body having jurisdiction over the
Company or any of its subsidiaries or any of their properties, other than, in the case of
clause (ii) or (iii), such conflicts, breaches, violations, defaults and termination rights
which (A) would not, individually or in the aggregate, have a material adverse effect on the
consolidated financial position, shareholders’ equity or results of operations of the
Company and its subsidiaries, taken as a whole, (B) affect the due authorization and
enforceability in accordance with their terms of the Securities, or (C) would not adversely
affect the consummation of the transactions contemplated hereunder;

     (l) Neither the Company nor any of its subsidiaries is in violation of its memorandum
of association or bye-laws or other organizational documents or in default in the
performance or observance of any material obligation, agreement, covenant or condition
contained in any indenture, mortgage, deed of trust, loan agreement, lease or other
agreement or instrument to which it is a party or by which it or any of its properties may
be bound;

     (m) Each of the Company and Platinum Finance has all requisite corporate power and
authority to enter into this Agreement, the 2005 Registration Rights Agreement, the
Jurisdiction Agreement and the Indenture; and each of this Agreement and the Jurisdiction
Agreement has been duly authorized, executed and delivered by the Company and Platinum
Finance;

     (n) The 2005 Registration Rights Agreement has been duly authorized, and when executed
and delivered by the Company, Platinum Finance and the Purchaser, the 2005

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Registration Rights Agreement will constitute a valid and legally binding obligation of
the Company and Platinum Finance, enforceable in accordance with its terms, subject, as to
enforcement, to bankruptcy, insolvency, reorganization and other laws of general
applicability relating to or affecting creditors rights and to general equity principles;
provided, however, that no representation or warranty with respect to enforceability is made
with respect to the indemnity provisions in the 2005 Registration Rights Agreement;

     (o) The Exchange Securities have been duly authorized by the Company and Platinum
Finance and, when duly executed, authenticated, issued and delivered in accordance with the
Indenture and the 2005 Registration Rights Agreement, the Exchange Securities will
constitute valid and legally binding obligations of Platinum Finance and the Company,
enforceable in accordance with their terms, subject to bankruptcy, insolvency, fraudulent
transfer, reorganization and similar laws of general applicability relating to or affecting
creditors’ rights and to general equity principles, and will be in the form contemplated by,
and will be entitled to the benefits of, the Indenture; the Exchange Securities will conform
in all material respects to the description thereof contained in the Offering Circular and
will be in substantially the form previously delivered to you;

     (p) The statements set forth in the Offering Circular under the captions “Business—Our
Business—Regulation,” “Description of Notes,” “Description of Our Share Capital,” “Material
U.S. Federal Income Tax Considerations,” “ERISA Considerations,” and “Underwriting,” and in
the Form 10-K under the caption “Related Party Transactions,” insofar as they purport to
describe the provisions of the laws and documents referred to therein, are true and complete
in all material respects;

     (q) Other than as set forth in the Offering Circular under the caption “Business—Legal
Proceedings”, there are no legal or governmental proceedings pending to which the Company or
any of its subsidiaries is a party or of which any property of the Company or any of its
subsidiaries is the subject which, if determined adversely to the Company or any of its
subsidiaries, would individually or in the aggregate have a material adverse effect on the
consolidated financial position, shareholders’ equity or results of operations of the
Company and its subsidiaries, taken as a whole; and, to the best of the Company’s knowledge,
no such proceedings are threatened or contemplated by governmental authorities or threatened
by others;

     (r) Each description of a contract, document or other agreement in the Offering
Circular accurately reflects in all material respects the terms of the underlying contract,
document or other agreement; each contract, document or other agreement set forth on
Schedule I hereto (such listed contracts, documents and other agreements, collectively, the
“Filed Agreements”) to which the Company or a subsidiary of the Company is a party is in
full force and effect and is valid and enforceable by and against the Company or such
subsidiary, as the case may be, in accordance with its terms, except that (i) such
enforcement may be subject to bankruptcy, insolvency, reorganization, moratorium, or other
laws now or hereafter in effect affecting creditors’ rights generally, (ii) the
enforceability thereof is subject to the general principles of equity (whether such
enforceability is considered in a proceeding in equity or at law) and (iii) no
representation or warranty is made with respect to the enforceability of indemnification and
contribution provisions relating to violations under the Act contained in the Formation and
Separation Agreement (as defined in Schedule I hereto), the

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Registration Rights Agreement (as defined in Schedule I hereto), and the Transfer
Restrictions and Registration Rights Agreement (as defined in Schedule I hereto); neither
the Company nor any of its subsidiaries, if a subsidiary is a party, nor to the Company’s
knowledge, any other party is in default in the observance or performance of any term or
obligation to be performed by it under any Filed Agreement, and no event has occurred which
with notice or lapse of time or both would constitute such a default;

     (s) Except as described in the Offering Circular, no consent, approval, authorization,
registration or qualification of or with any governmental agency or body or any court is
required to be obtained or made by the Company or any of its subsidiaries for the sale of
the Securities and the Guarantees, the issuance and delivery of the Exchange Securities, and
the consummation of the transactions contemplated by this Agreement, the 2005 Registration
Rights Agreement, the Jurisdiction Agreement and the Indenture, except (i) such consents,
approvals, authorizations, registrations or qualifications as may be required under state
securities, Blue Sky or insurance securities laws in connection with the purchase and
distribution of the Securities and the Guarantees by the Purchaser, (ii) such consents,
approvals, authorizations, registrations or qualifications as may be required and have been
obtained from the Bermuda Monetary Authority, (iii) the filing of a registration statement
by Platinum Finance and the Company with the Commission pursuant to the Act, (iv) such
consents, approvals, authorizations, registrations or qualifications that may be required
under the Trust Indenture Act, and (v) such consents, approvals, authorizations,
registrations or qualifications the failure of which to obtain or make would not,
individually or in the aggregate have a material adverse effect on the consolidated
financial position, shareholders’ equity or results of operations of the Company and its
subsidiaries, taken as a whole, or affect the due authorization and enforceability in
accordance with their terms of the Securities or the Exchange Securities (and in each case,
the Guarantees);

     (t) When the Securities and the Guarantees are issued, executed and delivered pursuant
to this Agreement, neither the Securities nor the Guarantees will be of the same class
(within the meaning of Rule 144A under the Act) as securities which are listed on a national
securities exchange registered under Section 6 of the Exchange Act or quoted in a U.S.
automated inter-dealer quotation system;

     (u) The Company is subject to Section 13 of the Exchange Act;

     (v) Neither the Company nor Platinum Finance is, or after giving effect to the offering
and sale of the Securities, will be an “investment company”, as such term is defined in the
United States Investment Company Act of 1940, as amended (the “Investment Company Act”);

     (w) Except as described in the Offering Circular, each of the Company and its
subsidiaries is duly licensed as an insurance holding company or as an insurer or reinsurer,
as the case may be, under the insurance laws (including laws that relate to companies that
control insurance companies) and the rules, regulations and interpretations of the insurance
regulatory authorities thereunder (collectively, “Insurance Laws”), of each jurisdiction in
which the conduct of its business as described in the Offering Circular requires such
licensing, except for such jurisdictions in which the failure of the Company and its
subsidiaries to be so licensed would not, individually or in the aggregate, have a material
adverse effect on the

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consolidated financial position, shareholder’s equity or results of operations of the
Company and its subsidiaries, taken as a whole; each of the Company and its subsidiaries has
made all required filings under applicable holding company statutes or other Insurance Laws
in each jurisdiction where such filings are required, except for such jurisdictions in which
the failure to make such filings would not, individually or in the aggregate, have a
material adverse effect on the consolidated financial position, shareholder’s equity or
results of operations of the Company and its subsidiaries, taken as a whole; except as
described in the Offering Circular, each of the Company and its subsidiaries has all other
necessary authorizations, approvals, orders, consents, certificates, permits, registrations
and qualifications of and from all insurance regulatory authorities necessary to conduct
their respective businesses as described in the Offering Circular and all of the foregoing
are in full force and effect, except where the failure to have such authorizations,
approvals, orders, consents, certificates, permits, registrations or qualifications or their
failure to be in full force and effect would not, individually or in the aggregate, have a
material adverse effect on the consolidated financial position, shareholder’s equity or
results of operations of the Company and its subsidiaries, taken as a whole; none of the
Company or any of its subsidiaries has received any notification from any insurance
regulatory authority or other governmental authority in the United States, Bermuda, Ireland,
the United Kingdom or elsewhere to the effect that any additional authorization, approval,
order, consent, certificate, permit, registration or qualification is needed to be obtained
by either the Company or any of its subsidiaries; and no insurance regulatory authority has
issued any order or decree impairing, restricting or prohibiting the payment of dividends by
the Company or any of its subsidiaries;

     (x) The Company and its subsidiaries own or possess or are licensed to use, or will be
able to acquire on reasonable terms, all material patents, patent rights, licenses,
inventions, copyrights, know-how (including trade secrets and other unpatented and/or
unpatentable proprietary or confidential information, systems or procedures), trademarks,
services marks and trade names that are necessary for the Company and its subsidiaries to
conduct the business of reinsurance in the manner and to the extent described in the
Offering Circular, and none of the Company or any of its subsidiaries has received any
notice of infringement of or conflict with asserted rights of others with respect to any of
the foregoing, except for those which, if determined adversely to the Company or any of its
subsidiaries, would not have a material adverse effect on the consolidated financial
position, shareholder’s equity or results of operations of the Company and its subsidiaries,
taken as a whole;

     (y) Each of the Company and its subsidiaries has filed all statutory financial returns,
reports, documents and other information required to be filed pursuant to the applicable
Insurance Laws of the United States and the various states thereof, Bermuda, Ireland, the
United Kingdom and each other jurisdiction applicable thereto, and has duly paid all taxes
(including franchise taxes and similar fees) it is required to have paid under the
applicable Insurance Laws of the United States and the various states thereof, Bermuda,
Ireland, the United Kingdom and each other jurisdiction applicable thereto, except where the
failure, individually or in the aggregate, to file such return, report, document or
information or to pay such taxes would not have a material adverse effect on the
consolidated financial position, shareholders’ equity or results of operations of the
Company and its subsidiaries, taken as a whole; and each of the Company and its subsidiaries
maintains its books and records in accordance with, and is otherwise in compliance with, the
applicable Insurance Laws of the United States and the various states thereof, Bermuda,
Ireland, the United Kingdom and each

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other jurisdiction applicable thereto, except where the failure to so maintain its
books and records or be in compliance would not individually or in the aggregate have a
material adverse effect on the consolidated financial position, shareholders’ equity or
results of operations of the Company and its subsidiaries, taken as a whole;

     (z) Any tax returns required to be filed by the Company or any of its subsidiaries in
any jurisdiction have been filed, except where the failure to file such returns would not
individually or in the aggregate have a material adverse effect on the consolidated
financial position, shareholders’ equity or results of operations of the Company and its
subsidiaries, taken as a whole, and any material taxes, including any withholding taxes,
excise taxes, penalties and interest, assessments and fees and other charges due or claimed
to be due from such entities have been paid, other than any of those being contested in good
faith and for which adequate reserves have been provided or any of those currently payable
without penalty or interest;

     (aa) The Company and its subsidiaries have not taken, and have no plan or intention to
take, directly or indirectly, any action that would or would be reasonably expected to
cause or result in the Company and/or any Non-U.S. Subsidiary being treated as engaged in a
trade or business within the United States for purposes of the Internal Revenue Code of
1986, as amended;

     (bb) No stamp or other issuance or transfer taxes or duties and no capital gains,
income, withholding or other taxes are payable by or on behalf of the Purchaser to Bermuda
or any political subdivision or taxing authority thereof or therein in connection with the
issuance, sale and delivery by Platinum Finance of the Securities and by the Company of the
Guarantees to or for the account of the Purchaser, in each case in the manner contemplated
by this Agreement to the Purchaser, the sale and delivery outside Bermuda by the Purchaser
of the Securities (and the Guarantees) to the initial purchasers thereof or the issuance
and delivery of the Exchange Securities (and the Guarantees) in the manner contemplated by
the 2005 Registration Rights Agreement; and no registration, documentary, recording,
transfer or other similar tax, fee or charge by any Bermuda government authority is payable
in connection with the execution, delivery, filing, registration or performance of this
Agreement or the 2005 Registration Rights Agreement;

     (cc) There are no currency exchange control laws, in each case of Bermuda, the United
Kingdom or Ireland (or any political subdivision or taxing authority thereof), that would
be applicable to the payment of interest on the Securities or the Exchange Securities by
Platinum Finance or the Guarantees by the Company or the Company (other than as may apply
to residents of Bermuda for Bermuda exchange control purposes). The Company and Platinum
Bermuda are “exempted companies” under Bermuda law and have not (i) acquired and do not
hold any land in Bermuda, other than that held by way of lease or tenancy for terms of not
more than 21 years, without the express authorization of the Bermuda legislature, (ii)
taken mortgages on land in Bermuda to secure an amount in excess of $50,000, without the
consent of the Bermuda Minister of Finance, (iii) acquired any bonds or debentures secured
by any land in Bermuda (other than certain types of Bermuda government securities), or (iv)
conducted their business in a manner that is prohibited for “exempted companies” under
Bermuda law. Neither the Company nor Platinum Bermuda has received notification from the
Bermuda Monetary Authority or any other Bermuda governmental authority of proceedings
relating to the modification or revocation of its

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designation as nonresident for exchange control purposes or its status as an “exempted
company”;

     (dd) Under the Jurisdiction Agreement, each of the Company and Platinum Finance has
validly and irrevocably submitted to the non-exclusive jurisdiction of any United States
Federal or State court in the Borough of Manhattan, the City of New York, or the State of
New York (a “New York Court”) with respect to suits, actions or proceedings brought by the
Purchaser or by any person who controls the Purchaser within the meaning of either Section
15 of the Act or Section 20 of the Exchange Act against the Company or Platinum Finance
arising out of or in connection with violations of United States federal securities laws
relating to offers and sales of the Securities (and the Guarantees), and has validly and
irrevocably waived, to the fullest extent permitted by law, any objections that it may now
or hereafter have to the laying of venue of any such suit, action or proceeding brought in
any New York Court based on or arising under this Agreement or any claims that any such
suit, action or proceeding brought in any New York Court has been brought in an
inconvenient forum; and, under the Jurisdiction Agreement, each of the Company and Platinum
Finance has duly and irrevocably appointed CT Corporation System as its agent to receive
service of process with respect to actions arising out of or in connection with any such
suit, action or proceeding, and service of process on CT Corporation System effected in the
manner set forth in the Jurisdiction Agreement will be effective under the laws of Bermuda
to confer personal jurisdiction over the Company;

     (ee) The financial statements included or incorporated by reference in the Offering
Circular, together with the related schedules and notes, present fairly in all material
respects the financial position of the Company and its subsidiaries on a consolidated basis
as of the dates indicated and the results of operations, stockholders’ equity and cash
flows of the Company and its subsidiaries on a combined basis for the periods indicated;
such financial statements have been prepared in conformity with generally accepted
accounting principles in the United States (“GAAP”) applied on a consistent basis
throughout the periods involved; the financial statement schedules, if any, included or
incorporated by reference in the Offering Circular present fairly in all material respects
the information required to be stated therein; the selected financial data included or
incorporated by reference in the Offering Circular present fairly in all material respects
the information shown therein and have been compiled on a basis consistent in all material
respects with that of the audited financial statements included or incorporated by
reference in the Offering Circular, as the case may be;

     (ff) The combined statements of underwriting results and identifiable underwriting
cash flows of the Reinsurance Underwriting Segment of the St. Paul Travelers Companies,
Inc. (“Predecessor”) incorporated by reference in the Offering Circular (i) present fairly
in all material respects the underwriting results and identifiable underwriting cash flows
of Predecessor for the period from January 1, 2002 through November 1, 2002; (ii) comply as
to form in all material respects with the applicable accounting requirements of the Act;
and (iii) have been prepared in conformity with GAAP applied on a consistent basis
throughout the periods involved (except as otherwise noted therein);

     (gg) The selected financial information with respect to the results of operations of
Predecessor for the period ended November 1, 2002 and for each of the years ended

10

 

December 31, 2001 and 2000 included in the Offering Circular (i) present fairly in all
material respects the financial position and results of operations of Predecessor for the
period ended November 1, 2002 and for each of the years ended December 31, 2001 and 2000;
and (ii) have been prepared in conformity with GAAP applied on a consistent basis
throughout the period involved (except as otherwise noted therein);

     (hh) KPMG, LLP, who have certified certain financial statements of Predecessor and the
Company and its subsidiaries, and have audited the Company’s internal control over
financial reporting and management’s assessment thereof, are independent public accountants
as required by the Act and the rules and regulations of the Commission thereunder;

     (ii) No relationship, direct or indirect, exists between or among any of the Company,
Platinum Finance or, to the knowledge of the Company, any of their respective affiliates
(as such term is defined in Rule 405 under the Act) on the one hand, and any former or
current director, officer, stockholder, broker, customer or supplier of any of them, on the
other hand, which is required by the Act or the Exchange Act or the rules and regulations
thereunder to be described in the Form 10-K which is not so described or is not described
as required;

     (jj) The Company and its consolidated subsidiaries maintain a system of internal
control over financial reporting (as such term is defined in Rule 13a-15(f) of the Exchange
Act) that complies with the requirements of the Exchange Act and that is sufficient to
provide reasonable assurances that (i) transactions are executed in accordance with
management’s authorization; (ii) transactions are recorded as necessary to permit
preparation of financial statements in conformity with generally accepted accounting
principles and to maintain accountability for assets; (iii) access to assets is permitted
only in accordance with management’s authorization; (iv) the recorded accountability for
assets is compared with the existing assets at reasonable intervals and appropriate action
is taken with respect to any differences; (v) material information relating to the Company
and its consolidated subsidiaries is promptly made known to the officers responsible for
establishing and maintaining the system of internal accounting controls; and (vi) any
significant deficiencies or weaknesses in the design or operation of internal accounting
controls which could adversely affect the Company’s ability to record, process, summarize
and report financial data, and any fraud whether or not material that involves management
or other employees who have a significant role in internal controls, are adequately and
promptly disclosed to the Company’s independent auditors and the audit committee of the
Company’s board of directors; the Company’s internal control over financial reporting is
effective in all material respects and the Company is not aware of any material weaknesses
in its internal control over financial reporting;

     (kk) The Company and its consolidated subsidiaries employ disclosure controls and
procedures (as such term is defined in Rule 13a-15(e) of the Exchange Act) that comply in
all material respects with the requirements of the Exchange Act; such disclosure controls
and procedures are designed to ensure that information required to be disclosed by the
Company in the reports that it files or submits under the Exchange Act is recorded,
processed, summarized and reported, within the time periods specified in the Commission’s
rules and forms, and is accumulated and communicated to the Company’s management, including
its principal executive officer or officers and principal financial officer or officers, as
appropriate

11

 

to allow timely decisions regarding disclosure; such disclosure controls and
procedures are effective to provide reasonable assurance that information required to be
disclosed by the Company in reports filed or submitted by the Company under the Exchange
Act is recorded, processed, summarized and timely reported as specified in the Commission’s
rules and forms;

     (ll) There are no transactions, arrangements and other relationships between and/or
among the Company, Platinum Finance, and/or, to the knowledge of the Company, any of their
respective affiliates and any unconsolidated entity, including, but not limited to, any
structural finance, special purpose or limited purpose entity (each, an “Off Balance Sheet
Transaction”) that could reasonably be expected to affect materially the Company’s
liquidity or the availability of or requirements for its capital resources, including those
Off Balance Sheet Transactions described in the Commission’s Statement about Management’s
Discussion and Analysis of Financial Conditions and Results of Operations (Release Nos.
33-8056; 34-45321; FR-61), required to be described in the Form 10-K which have not been
described as required;

     (mm) Neither the Company, Platinum Finance, nor any person acting on its or their
behalf has offered or sold the Securities or the Guarantees by means of any general
solicitation or general advertising within the meaning of Rule 502(c) under the Act or,
with respect to Securities or the Guarantees sold outside the United States to non-U.S.
persons (as defined in Rule 902 under the Act), by means of any directed selling efforts
within the meaning of Rule 902 under the Securities Act and the Company, Platinum Finance,
any of their respective affiliates and any person acting on their behalf has complied with
and will implement the “offering restriction” within the meaning of such Rule 902; provided
that no representation is made with respect to any action or inaction of the Purchaser;

     (nn) Within the preceding six months, neither the Company, Platinum Finance nor any
other person acting on behalf of the Company or Platinum Finance has offered or sold to any
person any Securities or the Guarantees, or any securities of the same or a similar class
as the Securities or the Guarantees, other than Securities or Guarantees offered or sold to
the Purchaser hereunder; provided that no representation is made with respect to any action
or inaction of the Purchaser. The Company and Platinum Finance will take reasonable
precautions designed to insure that any offer or sale, direct or indirect, in the United
States or to any U.S. person (as defined in Rule 902 under the Act) of any Securities or
Guarantees or any substantially similar security issued by the Company or Platinum Finance,
within six months subsequent to the date on which the distribution of the Securities and
the Guarantees has been completed (as notified to the Company by the Purchaser), is made
under restrictions and other circumstances reasonably designed not to affect the status of
the offer and sale of the Securities and the Guarantees in the United States and to U.S.
persons contemplated by this Agreement as transactions exempt from the registration
provisions of the Act;

     (oo) Since the date of the latest audited financial statements included or
incorporated by reference in the Offering Circular, there has been no change in the
Company’s internal control over financial reporting that has materially affected, or is
reasonably likely to materially affect, the Company’s internal control over financial
reporting;

12

 

     (pp) Registration of the Securities (and the Guarantees) under the Securities Act is
not required in connection with the offer, sale, issuance or delivery of the Securities
(and the Guarantees) to the Purchaser or by the Purchaser in the initial resale thereof in
the manner contemplated by this Agreement and the Offering Circular; and

     (qq) Except as described in the Offering Circular, the Company has no knowledge of any
threatened or pending downgrading of the rating accorded the Company or any of its
subsidiaries’ financial strength or claims-paying ability by A.M. Best Company, Inc.,
Standard & Poor’s Ratings Service, a Division of The McGraw-Hill Companies, Inc., and
Moody’s Investors Services, Inc., the only “nationally recognized statistical rating
organizations,” as that term is defined by the Commission for purposes of Rule 463(g)(2)
under the Act which currently rate the claims-paying ability or one or more of the Company
or its subsidiaries.

     2. Subject to the terms and conditions herein set forth, the Company agrees to issue and sell
to the Purchaser, and the Purchaser agrees to purchase from the Company, at a purchase price of
98.76% of the principal amount thereof, plus accrued interest, if any, from May 26, 2005 to the
Time of Delivery hereunder, all of the Securities (and the Guarantees).

     3. Upon the authorization by you of the release of the Securities and the Guarantees, the
Purchaser proposes to offer the Securities (and the Guarantees) for sale upon the terms and
conditions set forth in this Agreement and the Offering Circular and the Purchaser hereby
represents and warrants to, and agrees with the Company and Platinum Finance that:

     (a) It will offer and sell the Securities only to (i) persons who it reasonably believes are
“qualified institutional buyers” (“QIBs”) within the meaning of Rule 144A under the Act in
transactions meeting the requirements of Rule 144A or, (ii) upon the terms and conditions set forth
in Annex II to this Agreement;

     (b) It is an Institutional Accredited Investor; and

     (c) It will not offer or sell the Securities (and the Guarantees) by any form of general
solicitation or general advertising, including but not limited to the methods described in Rule
502(c) under the Act.

     4. (a) The Securities (and the Guarantees) to be purchased by the Purchaser hereunder will be
represented by one or more definitive global Securities which will be deposited by or on behalf of
Platinum Finance with The Depository Trust Company (“DTC”) or its designated custodian and will be
registered in the name of Cede & Co., as nominee of DTC. The Company and Platinum Finance will
deliver the Securities (and the Guarantees) to and for the account of the Purchaser, against
payment by or on behalf of the Purchaser of the purchase price therefore by wire transfer in
federal same day funds. The Company and Platinum Finance will cause the certificates representing
the Securities (and the Guarantees) to be made available to the Purchaser for checking at least
twenty-four hours prior to the Time of Delivery (as defined below) at the office of DTC or its
designated custodian. The time and date of such delivery and payment shall be 9:30 a.m., New York
City time, on May 26, 2005 or such other time and date as the Purchaser and the Company may agree
upon in writing. Such time and date for delivery of the Securities (and the Guarantees) is herein
called the “Time of Delivery”.

13

 

     (b) The documents to be delivered at the Time of Delivery by or on behalf of the parties
hereto pursuant to Section 7 hereof, including the cross receipt for the Securities (and the
Guarantees) and any additional documents reasonably requested by the Purchaser pursuant to Section
7(k) hereof, will be delivered at the offices of Fried, Frank, Harris, Shriver & Jacobson LLP, One
New York Plaza, New York, New York 10004 (the “Closing Location”), at the Time of Delivery. A
meeting will be held at the Closing Location at 2:00 p.m., New York City time, on the New York
Business Day next preceding the Time of Delivery, at which meeting the final drafts of the
documents to be delivered pursuant to the preceding sentence will be available for review by the
parties hereto. For the purposes of this Section 4, “New York Business Day” shall mean each
Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which banking institutions in
New York are generally authorized or obligated by law or executive order to close.

     5. Each of the Company and Platinum Finance, jointly and severally, agrees with the Purchaser:

     (a) To prepare the Offering Circular in a form approved by you; to make no amendment or any
supplement to the Offering Circular which shall be disapproved by you promptly after reasonable
notice thereof; and to furnish you with copies thereof;

     (b) Promptly from time to time to take such action as you may reasonably request to qualify
the Securities and the Guarantees for offering and sale under the securities laws of such
jurisdictions as you may request and to comply with such laws so as to permit the continuance of
sales and dealings therein in such jurisdictions for as long as may be necessary to complete the
distribution of the Securities and the Guarantees, provided that in connection therewith neither
the Company nor Platinum Finance shall be required to qualify as a foreign corporation or to file a
general consent to service of process in any jurisdiction or become subject to taxation in any
jurisdiction;

     (c) Prior to 10:00 A.M., New York City time, on the New York Business Day next succeeding the
date of this Agreement and from time to time, to furnish the Purchaser with written and electronic
copies of the Offering Circular and each amendment or supplement thereto signed by an authorized
officer of the Company with the independent accountants’ report(s) in the Offering Circular, and
any amendment or supplement containing amendments to the financial statements covered by such
report(s), signed by the accountants, in New York City in such quantities as you may reasonably
request, and if, at any time prior to the expiration of nine months after the date of the Offering
Circular, any event shall have occurred as a result of which the Offering Circular as then amended
or supplemented would include an untrue statement of a material fact or omit to state any material
fact necessary in order to make the statements therein, in the light of the circumstances under
which they were made when such Offering Circular is delivered, not misleading, or, if for any other
reason it shall be necessary or desirable during such same period to amend or supplement the
Offering Circular, to notify you and upon your request to prepare and furnish without charge to the
Purchaser and to any dealer in securities as many written and electronic copies as you may from
time to time reasonably request of an amended Offering Circular or a supplement to the Offering
Circular which will correct such statement or omission or effect such compliance;

     (d) During the period beginning from the date hereof and continuing to and including the date
30 days after the date of the Offering Circular, not to offer, sell, contract to sell or otherwise
dispose of, except as provided hereunder, any securities of the Company or Platinum Finance that
are substantially similar to the Securities (and the Guarantees), including but not limited to any

14

 

securities that are convertible into or exchangeable for, or that represent the right to
receive, any such substantially similar securities, or to file any registration statement with the
Commission under the Act relating to any such securities (other than a registration statement on
Form S-4 providing for the registration of the debt securities and guarantees of Platinum Finance
and the Company, respectively, with terms identical to the Securities (and the Guarantees) (the
“Exchange Securities”), and the exchange of the Securities (and the Guarantees) for the Exchange
Securities, all in a manner which will permit persons who acquire the Exchange Securities to resell
the Exchange Securities pursuant to the Act), without prior written consent of the Purchaser;

     (e) Not to be or become, at any time prior to the expiration of three years after the Time of
Delivery, an open-end investment company, unit investment trust, closed-end investment company or
face-amount certificate company that is or is required to be registered under Section 8 of the
Investment Company Act;

     (f) At any time when the Company is not subject to Section 13 or 15(d) of the Exchange Act,
for the benefit of holders from time to time of Securities and the Guarantees, to furnish at its
expense, upon request, to holders of Securities and the Guarantees and prospective purchasers of
securities information (the “Additional Issuer Information”) satisfying the requirements of
subsection (d)(4)(i) of Rule 144A under the Act;

     (g) If requested by you, to use its best efforts to cause the Securities and the Guarantees to
be eligible for the PORTAL trading system of the National Association of Securities Dealers, Inc.;

     (h) If not otherwise available on the Commission’s Electronic Data Gathering, Analysis and
Retrieval System or similar system, during a period of five years from the date of the Offering
Circular, to furnish to the holders of the Securities and the Guarantees as soon as practicable
after the end of each fiscal year an annual report (including a balance sheet and statements of
income, shareholders’ equity and cash flows of the Company and its consolidated subsidiaries
certified by independent public accountants) and, as soon as practicable after the end of each of
the first three quarters of each fiscal year (beginning with the fiscal quarter ending after the
date of the Offering Circular), consolidated summary financial information of the Company and its
subsidiaries for such quarter in reasonable detail, provided, however, that if the Company is
subject to the reporting requirements of the Exchange Act, the Company shall not be required to
provide such information prior to the time such information is filed with the Commission;

     (i) If not otherwise available on the Commission’s Electronic Data Gathering, Analysis and
Retrieval System or similar system, during a period of five years from the date of the Offering
Circular, to furnish to you copies of all reports or other communications (financial or other)
furnished to shareholders of the Company, and to deliver to you (i) as soon as they are available,
copies of any reports and financial statements furnished to or filed with the Commission or any
securities exchange on which the Securities or any class of securities of the Company is listed;
and (ii) such additional information concerning the business and financial condition of the Company
as you may from time to time reasonably request (such financial statements to be on a consolidated
basis to the extent the accounts of the Company and its subsidiaries are consolidated in reports
furnished to its shareholders generally or to the Commission), provided, however, that, if the
Company is subject to the reporting requirements of the Exchange Act, the Company shall not be
required to provide such information prior to the time such information is filed with the
Commission;

15

 

     (j) During the period of three years after the Time of Delivery, the Company and Platinum
Finance will not, and will not permit any of their respective “affiliates” (as defined in Rule 144
under the Act) to, resell any of the Securities or the Guarantees which constitute “restricted
securities” under Rule 144 that have been reacquired by any of them; and

     (k) To use the net proceeds received by it from the sale of the Securities and the Guarantees
pursuant to this Agreement in the manner specified in the Offering Circular under the caption “Use
of Proceeds.”

     6. Each of the Company and Platinum Finance, without duplication, covenants and agrees with
the Purchaser that the Company and Platinum Finance will pay or cause to be paid the following: (i)
the fees, disbursements and expenses of the Company’s and Platinum Finance’s counsel and
accountants in connection with the issue of the Securities and the Guarantees and all other
expenses in connection with the preparation, printing and filing of the Preliminary Offering
Circular and the Offering Circular and any amendments and supplements thereto and the mailing and
delivering of copies thereof to the Purchaser and dealers; (ii) the cost of printing or producing
this Agreement, the Jurisdiction Agreement, the 2005 Registration Rights Agreement, the Indenture,
the Blue Sky Memorandum, closing documents (including any compilations thereof) and any other
documents in connection with the offering, purchase, sale and delivery of the Securities and the
Guarantees; (iii) all expenses in connection with the qualification of the Securities and the
Guarantees for offering and sale under state securities laws as provided in Section 5(b) hereof,
including the reasonable fees and disbursements of counsel for the Purchaser in connection with
such qualification and in connection with the Blue Sky survey; (iv) any fees charged by securities
rating services for rating the Securities; (v) the reasonable fees and expenses of the Trustee and
any agent of the Trustee and the reasonable fees and disbursements of its counsel in connection
with the Indenture, the Securities and the Guarantee; (vi) the cost of preparing the Securities and
the Guarantees; (vii) the cost and charges of any transfer agent or registrar; and (viii) any cost
incurred in connection with the designation of the Securities for trading in PORTAL; and (ix) all
other costs and expenses incident to the performance of its obligations hereunder which are not
otherwise specifically provided for in this Section. It is understood, however, that, except as
provided in this Section, and Sections 8 and 10 hereof, the Purchaser will pay all of their own
costs and expenses, including the fees of their counsel, transfer taxes on resale of any of the
Securities (and the Guarantees) by them, and any advertising expenses connected with any offers
they may make.

     7. The obligations of the Purchaser hereunder shall be subject, in its discretion, to the
condition that all representations and warranties and other statements of the Company and Platinum
Finance herein are, at and as of the Time of Delivery, true and correct, the condition that each of
the Company and Platinum Finance shall have performed all of its obligations hereunder theretofore
to be performed, and the following additional conditions:

     (a) Fried, Frank, Harris, Shriver & Jacobson LLP, counsel for the Purchaser, shall have
furnished to you such written opinion or opinions, dated the Time of Delivery in a form or forms
acceptable to you, and such counsel shall have received such papers and information as they may
reasonably request to enable them to render such opinion or opinions;

     (b) Dewey Ballantine LLP, counsel for the Company and Platinum Finance, shall have furnished
to you their written opinion or opinions (a draft of such opinion or opinions are attached as

16

 

Annex II(a) hereto), dated the Time of Delivery, in form and substance satisfactory to you, to
the effect that:

     (i) Assuming each of this Agreement, the Jurisdiction Agreement, the 2005 Registration
Rights Agreement and the Indenture has been duly authorized, executed and delivered by the
Company under Bermuda law, each of this Agreement, the Jurisdiction Agreement, the 2005
Registration Rights Agreement and the Indenture has been duly delivered by the Company under
New York law, and each of the 2005 Registration Rights Agreement, when executed and
delivered by the Purchaser (and assuming it is binding on the Purchaser), and the Indenture,
when executed and delivered by the Trustee (and assuming it is binding on the Trustee),
constitutes a valid and legally binding obligation of the Company, enforceable against the
Company in accordance with its terms, subject to bankruptcy, insolvency, fraudulent
transfer, reorganization, moratorium and similar laws of general applicability relating to
or affecting creditors’ rights and to general equity principles (other than the indemnities
provided for in the 2005 Registration Rights Agreement, as to which no opinion need be
expressed).

     (ii) Each of this Agreement, the Jurisdiction Agreement, the 2005 Registration Rights
Agreement and the Indenture has been duly authorized, executed and delivered by Platinum
Finance, and each of the 2005 Registration Rights Agreement, when executed and delivered by
the Purchaser (and assuming it is binding on the Purchaser), and the Indenture, when
executed and delivered by the Trustee (and assuming it is binding on the Trustee),
constitutes a valid and legally binding obligation of Platinum Finance, enforceable against
Platinum Finance in accordance with its terms, subject to bankruptcy, insolvency, fraudulent
transfer, reorganization, moratorium and similar laws of general applicability relating to
or affecting creditors’ rights and to general equity principles (other than the indemnities
provided for in the 2005 Registration Rights Agreement, as to which no opinion need be
expressed).

     (iii) The Securities have been duly executed by Platinum Finance, and, when
authenticated by the Trustee in accordance with the Indenture and delivered to the Purchaser
against payment therefor in accordance with the terms of this Agreement, the Securities will
have been duly delivered by Platinum Finance, will be in the form contemplated by the
Indenture, will be entitled to the benefits of the Indenture and will constitute valid and
binding obligations of Platinum Finance enforceable against Platinum Finance in accordance
with their terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization,
moratorium and similar laws of general applicability relating to or affecting creditors’
rights and to general equity principles, and will conform in all material respects to the
description thereof in the Offering Circular under the caption “Description of Notes.”

     (iv) The Exchange Securities have been duly authorized by Platinum Finance, and, when
authenticated by the Trustee in accordance with the Indenture and the Series B Supplemental
Indenture and delivered in accordance with the 2005 Registration Rights Agreement, the
Exchange Securities will have been duly delivered by Platinum Finance, will be in the form
contemplated by the Indenture and the Series B Supplemental Indenture, will be entitled to
the benefits of the Indenture and the Series B Supplemental Indenture and will

17

 

constitute valid and binding obligations of Platinum Finance enforceable against
Platinum Finance in accordance with their terms, subject to bankruptcy, insolvency,
fraudulent transfer, reorganization, moratorium and similar laws of general applicability
relating to or affecting creditors’ rights and to general equity principles, and will
conform in all material respects to the description thereof in the Offering Circular under
the caption “Description of Notes.”

     (v) Assuming the Guarantees endorsed on the Securities have been duly authorized by the
Company under Bermuda law and assuming the payment therefor in accordance with the terms of
this Agreement, the Guarantees constitute valid and binding obligations of the Company,
enforceable against the Company in accordance with their terms, subject to bankruptcy,
insolvency, fraudulent transfer, reorganization and similar laws of general applicability
relating to or affecting creditors’ rights and to general equity principles, and are in the
form contemplated by, and entitled to the benefits of, the Indenture.

     (vi) It is not necessary in connection with the offer and sale of the Securities (and
the Guarantees) to the Purchaser under the Purchase Agreement or in connection with the
initial resale of such Securities (and the Guarantees) by the Purchaser in accordance with
the Purchase Agreement and the Offering Circular to register under the Act such Securities
(and the Guarantees).

     (vii) Based solely on such counsel’s review of the Certificate of Good Standing of
Platinum US certified by the Secretary of State of the State of Maryland, dated such date as
stated in such counsel’s opinion (with a telephonic confirmation dated the date of such
counsel’s opinion), Platinum US has been duly incorporated and is an existing corporation in
good standing under the laws of the State of Maryland, with corporate power and authority to
conduct its business as described in the Offering Circular.

     (viii) Platinum Finance has been duly incorporated and is an existing corporation in
good standing under the laws of the State of Delaware, with corporate power and authority to
conduct its business as described in the Offering Circular; all of the outstanding shares of
Platinum Finance’s common stock have been duly authorized and validly issued and are fully
paid and non-assessable and are registered in the name of Platinum Ireland.

     (ix) To such counsel’s knowledge, the only agreements in which the Company or Platinum
Finance have agreed to register any securities are the 2005 Registration Rights Agreement,
the Registration Rights Agreement (as defined in Schedule I hereto) and the Transfer
Restrictions, Registration Rights and Standstill Agreement (as defined in Schedule I
hereto).

     (x) Assuming that each of the Filed Agreements that is governed by New York law and to
which the Company is a party has been duly authorized, executed and delivered by the Company
under Bermuda law and is binding on the other party or parties thereto, each of such
agreements has been duly delivered by the Company under New York law and constitutes a valid
and legally binding obligation of the Company, enforceable against the Company in accordance
with its terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization,
moratorium and similar laws of general applicability relating to or affecting creditors’
rights and to general equity principles (other than the indemnities provided for in the

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Registration Rights Agreement and the Transfer Restrictions, Registration Rights and
Standstill Agreement, as to which no opinion is expressed).

     (xi) Assuming that each of the Filed Agreements that is governed by New York law and to
which Platinum US is a party has been duly authorized, executed and delivered by Platinum US
under Maryland law and is binding on the other party or parties thereto, each of such Filed
Agreements constitutes a valid and legally binding obligation of Platinum US enforceable
against Platinum US in accordance with its terms, subject to bankruptcy, insolvency,
fraudulent transfer, reorganization and similar laws of general applicability relating to or
affecting creditors’ rights and to general equity principles, except that such counsel need
not express any opinion as to the enforceability of any leases, sub-leases or assignments of
leases or other agreements relating to real property constituting a Filed Agreement.

     (xii) Assuming that each of the Filed Agreements that is governed by New York law to
which Platinum Finance is a party is binding on the other party or parties thereto, each of
such Filed Agreements has been duly authorized, executed and delivered by Platinum Finance
and constitutes a valid and legally binding obligation of Platinum Finance enforceable
against Platinum Finance in accordance with its terms, subject to bankruptcy, insolvency,
fraudulent transfer, reorganization and similar laws of general applicability relating to or
affecting creditors’ rights and to general equity principles, except that such counsel need
not express any opinion as to the enforceability of any leases, sub-leases or assignments of
leases or other agreements relating to real property constituting a Filed Agreement.

     (xiii) No consent, approval, authorization or order of, or qualification with, any
United States Federal or New York State governmental body or agency is required for the
issuance and sale of the Securities (and the Guarantees), the issuance and delivery of the
Exchange Securities or the consummation by the Company and Platinum Finance of the
transactions contemplated by this Agreement, the Jurisdiction Agreement, the 2005
Registration Rights Agreement or the Indenture, except (A) such as may be required by the
securities or Blue Sky laws of the State of New York, and (B) with respect to the Exchange
Securities, the effectiveness of a registration statement to be filed by the Company and
Platinum Finance with the Commission pursuant to the Act and pursuant to the 2005
Registration Rights Agreement and (C) with respect to the Exchange Securities, pursuant to
the Trust Indenture Act.

     (xiv) The issuance and sale by Platinum Finance of the Securities (and by the Company
of the Guarantees), the issuance and delivery of the Exchange Securities pursuant to and in
the manner contemplated by this Agreement and the 2005 Registration Rights Agreement and the
performance by the Company and Platinum Finance of their respective obligations under this
Agreement, the Jurisdiction Agreement, the 2005 Registration Rights Agreement and the
Indenture will not (i) result in a default under or a breach of any of the Filed Agreements
that is governed by New York law and to which the Company or any subsidiary is a party,
except any such default or breaches as (A) would not individually or in the aggregate have a
material adverse effect on the consolidated financial position, shareholders’ equity or
results of operations of the Company and its subsidiaries, taken as a

19

 

whole, (B) would not affect the due authorization and enforceability in accordance with
their terms of the Securities (and the Guarantees) or the Exchange Securities; or (C) would
not adversely affect the consummation of the transactions contemplated by this Agreement,
the 2005 Registration Rights Agreement and the Indenture, or (ii) violate any Federal law of
the United States or law of the State of New York applicable to the Company or Platinum
Finance; provided, however, that for purposes of this paragraph (xiv), such counsel need not
express any opinion with respect to Federal or state securities laws, other antifraud laws
or fraudulent transfer laws; and provided, further, that insofar as performance by the
Company and Platinum Finance of their respective obligations under such agreements is
concerned, such counsel need not express any opinion as to bankruptcy, insolvency,
reorganization, moratorium and similar laws of general applicability relating to or
affecting creditors’ rights or general equity principles.

     (xv) Assuming that the Jurisdiction Agreement has been duly authorized, executed and
delivered by the Company under Bermuda law and is binding on the other party or parties
thereto and assuming that the Jurisdiction Agreement is not terminated, amended or modified
in any way, under the laws of the State of New York relating to submission to jurisdiction,
pursuant to the Jurisdiction Agreement, (A) each of the Company and Platinum Finance has
validly and irrevocably submitted to the non-exclusive jurisdiction of any New York Court
with respect to any legal suit, action or proceeding against the Company or Platinum Finance
brought by the Purchaser or by any Control Person (as defined in the Jurisdiction Agreement)
arising out of or based on the Purchase Agreement, the 2005 Registration Rights Agreement or
the transactions contemplated thereby, and has validly and irrevocably waived, to the
fullest extent that it may effectively do so, any objection to the venue of such suit,
action or proceeding in any such court, and (B) each of the Company and Platinum Finance has
validly appointed CT Corporation System as its authorized agent for the purpose and to the
extent described in the Jurisdiction Agreement, and service of process effected on such
agent in the manner set forth therein will be effective to confer valid personal
jurisdiction over the Company and Platinum Finance with respect to such suit, action or
proceeding, assuming, in each of clauses (A) and (B), (1) the validity of such actions under
Bermuda law and (2) the due authorization, execution and delivery of the Jurisdiction
Agreement by the Purchaser.

     (xvi) Neither the Company nor Platinum Finance is required to register as an
“investment company” under the Investment Company Act and the rules and regulations
promulgated thereunder.

     (xvii) The statements set forth in the Form 10-K under the caption “Related Party
Transactions,” and in the Offering Circular under the captions “Description of Notes,”
“Material U.S. Federal Income Tax Considerations—U.S. Federal Income Tax Consequences to
U.S. Holders,” “Material U.S. Federal Income Tax Considerations—U.S. Federal Income Tax
Consequences to Non-U.S. Holders,” “ERISA Considerations,” and “Underwriting” insofar as
they purport to describe the provisions of the New York and Federal laws and documents
referred to therein, are true and complete in all material respects.

20

 

     Such counsel shall also furnish to you its written opinion that each of the documents
incorporated by reference in the Offering Circular which were filed under the Exchange Act,
as of their respective dates (in each case, other than the financial statements and related
notes and schedules and other financial information therein, as to which such counsel need
express no opinion), appeared on their face to be appropriately responsive in all material
respects to the requirements of the Exchange Act and the applicable rules and regulations of
the Commission thereunder. Further, nothing came to such counsel’s attention in the course
of its review that has caused such counsel to believe that the Offering Circular, as of its
date, and the documents incorporated therein by reference which were filed under the
Exchange Act, as of their respective dates (in each case, other than the financial
statements and related notes and schedules and other financial information therein, as to
which such counsel need express no opinion) contained any untrue statement of a material
fact or omitted to state any material fact necessary in order to make the statements
therein, in the light of the circumstances under which they were made, not misleading.
Also, nothing has come to such counsel’s attention that has caused such counsel to believe
that, as of the date and time of delivery of such counsel’s written opinion, the Offering
Circular (other than the financial statements and related notes and schedules and other
financial information therein, as to which such counsel need express no opinion), contained
any untrue statement of a material fact or omitted to state any material fact necessary in
order to make the statements therein, in the light of the circumstances under which they
were made, not misleading. Such counsel shall state that they do not assume any
responsibility for the accuracy or completeness of the statements contained in the Offering
Circular, or in any of the documents incorporated by reference in the Offering Circular or
in any further amendment or supplement thereto which were filed under the Exchange Act,
except for those made under the caption “Related Party Transactions” in the Form 10-K and
under the captions “Description of Notes,” “Material U.S. Federal Income Tax
Considerations—U.S. Federal Income Tax Consequences to U.S. Holders,” “Material U.S. Federal
Income Tax Considerations—U.S. Federal Income Tax Consequences to Non-U.S. Holders,” “ERISA
Considerations” and “Underwriting” in the Offering Circular insofar as they relate to
provisions of documents or of United States Federal tax law therein described.

     Such counsel may state that its opinions are solely for the benefit of the Purchaser
and may not be relied upon by any other person.

     (c) Conyers, Dill & Pearman, outside Bermuda counsel for the Company, shall have furnished to
you their written opinion (a draft of such opinion is attached as Annex II(b) hereto), dated the
Time of Delivery, in form and substance satisfactory to you, to the effect that:

     (i) Each of the Company and Platinum Bermuda is a limited liability company duly
incorporated and existing under the laws of Bermuda in good standing (“good standing”
meaning solely that it has not failed to make any filing with any Bermuda governmental
authority or to pay any Bermuda government fee or tax which would make it liable to be
struck off the Register of Companies and thereby cease to exist under the laws of Bermuda).

21

 

     (ii) Each of the Company and Platinum Bermuda has the necessary power and authority to
own, lease and operate its properties as described in the Offering Circular.

     (iii) The Company has the necessary corporate power and authority to carry on its
business as described in the Offering Circular. No further approvals of the insurance
regulatory, governmental or administrative body or authority of Bermuda are required for the
conduct of such business by the Company.

     (iv) Platinum Bermuda has the necessary corporate power and authority to carry on its
business as described in the Offering Circular, including its insurance and reinsurance
business as described in the Offering Circular, and is registered as a Class 4 insurer under
the Insurance Act 1978 effective June 6, 2002 and is licensed to carry on long-term business
subject to the provisions of the Insurance Act 1978 and the regulations promulgated
thereunder, and the conditions set out in Schedule I to the Certificate of Registration,
issued by the Bermuda Monetary Authority to Platinum Bermuda, dated June 6, 2002. No
further approvals of the insurance regulatory, governmental or administrative body or
authority of Bermuda are required for the conduct of such business by Platinum Bermuda.

     (v) The Company has the necessary corporate power and authority to enter into and
perform its obligations under this Agreement, the Jurisdiction Agreement, the 2005
Registration Rights Agreement and the Indenture. The execution and delivery of this
Agreement, the Jurisdiction Agreement, the 2005 Registration Rights Agreement and the
Indenture by the Company and the performance by the Company of its obligations thereunder
will not violate the memorandum of association or bye-laws of the Company nor any applicable
law, regulation, order or decree in Bermuda.

     (vi) The Company has taken all corporate action required to authorize its execution,
delivery and performance of this Agreement, the Jurisdiction Agreement, the 2005
Registration Rights Agreement and the Indenture. This Agreement, the Jurisdiction Agreement,
the 2005 Registration Rights Agreement and the Indenture have been duly executed and
delivered by or on behalf of the Company and constitute the valid, binding and enforceable
obligation of the Company in accordance with the terms thereof.

     (vii) The Company has taken all corporate action required to authorize its execution,
delivery and performance of the Guarantees endorsed on the Securities. Upon (i) due
execution of the Securities by Platinum Finance; (ii) authentication of the Securities by
the Trustee in accordance with the Indenture and delivery to the Purchaser in accordance
with this Agreement, the Guarantees endorsed on the Securities have been duly executed and
delivered by or on behalf of the Company and constitute the valid and binding obligation of
the Company, enforceable in accordance with the terms thereof.

     (viii) No order, consent, approval, license, authorization or validation of,
registration with or exemption by any government or public body or authority of Bermuda or
any sub-division thereof is required to authorize or is required in connection with the
execution, delivery, performance and enforcement of this Agreement, the Jurisdiction
Agreement, the 2005 Registration Rights Agreement or the Indenture, except such as have been
duly obtained in accordance with Bermuda law.

22

 

     (ix) It is not necessary or desirable to ensure the enforceability in Bermuda of this
Agreement, the Jurisdiction Agreement, the 2005 Registration Rights Agreement or the
Indenture that they be registered in any register kept by, or filed with, any governmental
authority or regulatory body in Bermuda.

     (x) Based solely on a review of a certified copy of the Company’s Memorandum of
Association, the Company has an authorized share capitalization as described in the Offering
Circular. Based solely on a review of a certified copy of the Register of Members of the
Company prepared by the branch registrar of the Company (the “Register of Members”), dated
such date as stated in such counsel’s opinion, the issued share capital of the Company at
the date of the Register of Members consists of such number, as specified in such counsel’s
opinion and are duly authorized and validly issued, fully paid and nonassessable (which term
means when used in this Section 7(c) that no further sums are required to be paid by the
holders thereof in connection with the issue thereof).

     (xi) Subject to the requirement that any shares of the Company are listed on the
Exchange or on another appointed stock exchange (as defined in section 2(1) of the Companies
Act 1981), the Company has received permission under the Exchange Control Act 1972 (and
Regulations made thereunder) from the Bermuda Monetary Authority for: (i) the issue and
subsequent free transferability of the Company’s shares, up to the amount of its authorized
capital from time to time, to and among persons non resident of Bermuda for exchange control
purposes; (ii) the issue and subsequent free transferability of
up to 20% of the Company’s shares in issue from time to time to persons resident in Bermuda for exchange control
purposes; and (iii) the issuance of options, warrants, depository receipts, rights, loan
notes and other securities of the Company and the subsequent free transferability thereof.

     (xii) The Guarantees conform, as to legal matters, to the description thereof contained
in the Offering Circular in all material respects.

     (xiii) The Guarantees will not constitute unlawful financial assistance by the Company
under Bermuda law.

     (xiv) Based solely on such counsel’s review of a certified copy of the Register of
Members of Platinum Bermuda dated as of the date set forth in such opinion, all of the
issued shares of Platinum Bermuda have been duly authorized and validly issued, fully paid
and non-assessable (as such term is defined above) and are registered in the name of the
Company.

     (xv) None of this Agreement, the Jurisdiction Agreement and the 2005 Registration
Rights Agreement and the Indenture will be subject to ad valorem stamp duty in Bermuda and
no registration, documentary, recording, transfer or other similar tax, fee or charge is
payable in Bermuda in connection with the execution, delivery, filing, registration or
performance of this Agreement, the Jurisdiction Agreement, the 2005 Registration Rights
Agreement or the Indenture.

     (xvi) Under current Bermuda law there is no Bermuda income tax, withholding tax,
capital gains tax, capital transfer tax, estate or inheritance tax, payable by investors who
are

23

 

not resident in Bermuda (or are deemed not to be resident in Bermuda for Bermuda
exchange purposes).

     (xvii) The Company and Platinum Bermuda have received from the Bermuda Minister of
Finance an assurance under The Exempted Undertakings Tax Protection Act 1966 of Bermuda to
the effect that in the event Bermuda enacts any legislation imposing tax computed on profits
or income, or computed on any capital asset, gain or appreciation, or any tax in the nature
of estate duty or inheritance tax, then such tax will not apply to the Company and Platinum
Bermuda or to any of their operations or their shares, debentures or other obligations,
until March 28, 2016. This assurance does not preclude the application of any tax or duty
to persons that are “ordinarily resident” in Bermuda (the Company and Platinum Bermuda are
not “ordinarily resident” in Bermuda) or the application of any tax payable by the Company
or Platinum Bermuda in respect of real property owned or leased by the Company or Platinum
Bermuda in Bermuda.

     (xviii) The statements in the Offering Circular under the captions “Management’s
Discussion and Analysis of Financial Condition and Results of Operations—Financial
Condition, Liquidity and Capital Resources—Liquidity Requirements,”
“Business—Regulation—Bermuda Regulation” and “Description of Our Share Capital,” to the
extent that they constitute statements of Bermuda law, are accurate in all material
respects.

     (xix) The Company can sue and be sued in its own name under the laws of Bermuda.

     (xx) The choice of New York law as the governing law of this Agreement, the
Jurisdiction Agreement, the 2005 Registration Rights Agreement and the Indenture is a valid
choice of law and would be recognized and given effect to in any action brought before a
court of competent jurisdiction in Bermuda, except for those laws (i) which such court
considers to be procedural in nature, (ii) which are revenue or penal laws or (iii) the
application of which would be inconsistent with public policy, as such term is interpreted
under the laws of Bermuda. The submission in the Jurisdiction Agreement to the
non-exclusive jurisdiction of the New York Courts (as defined in the Jurisdiction Agreement)
is valid and binding upon the Company.

     (xxi) The courts of Bermuda would recognize as a valid judgment, a final and conclusive
judgment in personam, obtained in the New York Courts against the Company based upon this
Agreement, the Jurisdiction Agreement, the 2005 Registration Rights Agreement and the
Indenture under which a sum of money is payable (other than a sum of money payable in
respect of multiple damages, taxes or other charges of a like nature or in respect of a fine
or other penalty) and would give a judgment based thereon provided that (a) such courts had
proper jurisdiction over the parties subject to such judgment, (b) such courts did not
contravene the rules of natural justice of Bermuda, (c) such judgment was not obtained by
fraud, (d) the enforcement of the judgment would not be contrary to the public policy of
Bermuda, (e) no new admissible evidence relevant to the action is submitted prior to the
rendering of the judgment by the courts of Bermuda and (f) there is due compliance in
seeking validation of such judgment with the correct procedures under the laws of Bermuda.

24

 

     (xxii) Under Section 16 of the Companies Act 1981, the bye-laws of the Company shall
bind the Company and the members of the Company to the same extent as if such bye-laws had
been signed and sealed by each such member, and contain covenants on the part of each such
member to observe all the provisions of the bye-laws of the Company, except, as provided in
Section 17 of the Companies Act 1981, no member of the Company shall be bound by an
alteration made in the bye-laws after the date on which he became a member, if and so far as
the alteration requires him to take or subscribe for more shares than the number held by him
at the date on which the alteration is made, or in any way increases his liability as at
that date to contribute to the share capital of, or otherwise to pay money to, the Company
(unless the member agrees in writing, either before or after the alteration is made, to be
bound thereby).

     (xxiii) Based solely on a search of the Register of Charges, maintained by the
Registrar of Companies pursuant to Section 55 of the Companies Act 1981, conducted on the
date identified in such opinion, there are no registered charges registered against the
Company or Platinum Bermuda.

     (xxiv) Based solely upon a search of the Cause Book of the Supreme Court of Bermuda
conducted on the date identified in such opinion, there are no judgments, nor legal or
governmental proceedings pending in Bermuda to which either of the Company or Platinum
Bermuda is a party.

     (xxv) The Purchaser will not be deemed to be resident, domiciled or carrying on
business in Bermuda by reason only of the execution, performance and enforcement of this
Agreement, the Jurisdiction Agreement, the 2005 Registration Rights Agreement or the
Indenture.

     (xxvi) The Purchaser has standing to bring an action or proceedings before the
appropriate courts in Bermuda for the enforcement of this Agreement, the Jurisdiction
Agreement, the 2005 Registration Rights Agreement or the Indenture. It is not necessary or
advisable in order for the Purchaser to enforce its rights under this Agreement, the
Jurisdiction Agreement, the 2005 Registration Rights Agreement or the Indenture, including
the exercise of remedies thereunder, that it be licensed, qualified or otherwise entitled to
carry on business in Bermuda.

     (xxvii) The Company and Platinum Bermuda have been designated as non-resident for the
purposes of the Exchange Control Act, 1972 and as such are free to acquire, hold and sell
foreign currency (including the payment of dividends and other distributions) and securities
without restriction. No currency exchange control laws or withholding taxes of Bermuda
apply to the payment of dividends (a) on the Common Shares by the Company or (b) by Platinum
Bermuda to the Company, except in each case as described in or contemplated by the Offering
Circular; and Platinum Bermuda is not currently prohibited by any Bermuda law or
governmental authority, directly or indirectly, from paying any dividends to the Company,
from making any other distributions on its capital stock, from repaying to the Company any

loans or advances to it from the Company or from transferring any of its property or assets
to the Company, except as contemplated by the Offering Circular.

25

 

     (xxviii) Neither the Company nor Platinum Bermuda is entitled to any immunity under the
laws of Bermuda, whether characterized as sovereign immunity or otherwise, from any legal
proceedings to enforce this Agreement, the Jurisdiction Agreement, the 2005 Registration
Rights Agreement or the Indenture in respect of itself or its property.

     (xxix) The procedure for the service of process on the Company through C.T. Corporation
System in New York, New York, United States of America, acting as agent for the Company, as
set out in Section 1(dd) of this Agreement and in the Jurisdiction Agreement, the 2005
Registration Rights Agreement and the Indenture, would be effective, in so far as Bermuda
law is concerned, to constitute valid service of the proceedings on the Company.

     (d) Michael E. Lombardozzi, Executive Vice President, General Counsel and Secretary of the
Company, shall have furnished to you his written opinion (a draft of such opinion is attached as
Annex II(e) hereto), dated the Time of Delivery, in form and substance satisfactory to you, to the
effect that:

     (i) The Company has been duly qualified as a foreign corporation for the transaction of
business and is in good standing under the laws of each jurisdiction in which it owns or
leases properties or conducts any business so as to require such qualification, or is
subject to no material liability or disability by reason of failure to be so qualified in
any such jurisdiction (such counsel being entitled to rely in respect of the opinion in this
clause upon opinions of local counsel and in respect of matters of fact upon certificates of
officers of the Company and of public officials, provided that such counsel shall state that
he believes that both you and he are justified in relying upon such opinions and
certificates);

     (ii) Platinum Finance has been duly qualified as a foreign corporation for the
transaction of business and is in good standing under the laws of each jurisdiction in which
it owns or leases properties or conducts any business so as to require such qualification,
or is subject to no material liability or disability by reason of failure to be so qualified
in any such jurisdiction (such counsel being entitled to rely in respect of the opinion in
this clause upon opinions of local counsel and in respect of matters of fact upon
certificates of officers of Platinum Finance and of public officials, provided that such
counsel shall state that he believes that both you and he are justified in relying upon such
opinions and certificates);

     (iii) To the best of such counsel’s knowledge and other than as set forth in the
Offering Circular, there are no legal or governmental proceedings pending to which the
Company or any of its subsidiaries is a party or of which any property of the Company or any
of its subsidiaries is the subject which, if determined adversely to the Company or any of
its subsidiaries, would individually or in the aggregate have a material adverse effect on
the consolidated financial position, shareholders’ equity or results of operations of the
Company and its subsidiaries, taken as a whole; and, to the best of such counsel’s
knowledge, no such proceedings are threatened or contemplated by governmental authorities or
threatened by others.

     (iv) The issuance and sale by Platinum Finance of the Securities, and by the Company of
the Guarantees and the issuance and delivery of the Exchange Securities pursuant to and in
the manner contemplated by this Agreement and the 2005 Registration

26

 

Rights Agreement and the compliance by the Company and Platinum Finance with all of the
provisions of this Agreement, the Jurisdiction Agreement, the 2005 Registration Rights
Agreement the Indenture and the consummation of the transactions herein and therein
contemplated will not conflict with or result in a breach or violation of any of the terms
or provisions of, or constitute a default under, or give rise to a right of termination
under, any of the Filed Agreements or under any indenture, mortgage, deed of trust, loan
agreement or other agreement or instrument known to such counsel to which the Company or any
of its subsidiaries is a party or by which the Company or any of its subsidiaries is bound
or to which any of the property or assets of the Company or any of its subsidiaries is
subject, other than such conflicts, breaches, violations, defaults and termination rights
which (A) would not individually or in the aggregate have a material adverse effect on the
consolidated financial position, shareholders’ equity or results of operations of the
Company and its subsidiaries, taken as a whole, (B) would not affect the due authorization
and enforceability in accordance with their terms of the Securities and the Guarantees; or
(C) would not adversely affect the consummation of the transactions contemplated hereby;

     (v) To the best of such counsel’s knowledge, neither the Company nor any of its
subsidiaries is (A) in violation of its bye-laws, its memorandum of association, its
certificate of incorporation or any of its other organizational documents or (B) in default
in the performance or observance of any material obligation, agreement, covenant or
condition contained in any of the Filed Agreements or in any indenture, mortgage, deed of
trust, loan agreement or other agreement or instrument to which it is a party or by which it
is bound or to which any of the property or assets of the Company or any of its subsidiaries
is subject, other than such defaults which (A) would not individually or in the aggregate
have a material adverse effect on the consolidated financial position, shareholders’ equity
or results of operations of the Company and its subsidiaries, taken as a whole; (B) would
not affect the due authorization and enforceability in accordance with their terms of the
Securities and the Guarantees; or (C) would not adversely affect the consummation of the
transactions contemplated by this Agreement, the 2005 Registration Rights Agreement and the
Indenture; and

     (vi) Platinum US is duly licensed as an insurer or reinsurer, as the case may be, under
the Insurance Laws of each jurisdiction in which the conduct of its business requires such
licensing, except for such jurisdictions in which the failure of Platinum US to be so
licensed would not, individually or in the aggregate, have a material adverse effect on the
consolidated financial position, shareholders’ equity or results of operations of the
Company and its subsidiaries, taken as a whole. Platinum US has made all required filings
under applicable Insurance Laws in each jurisdiction where such filings are required, except
for such jurisdictions in which the failure to make such filings would not, individually or
in the aggregate, have a material adverse effect on the consolidated financial position,
shareholder’s equity or results of operations of the Company and its subsidiaries, taken as
a whole. Platinum US has all other necessary authorizations, approvals, orders, consents,
certificates, permits, registrations and qualifications of and from all insurance regulatory
authorities necessary to conduct its business as described in the Offering Circular and all
of the foregoing are in full force and effect, except where the failure to have such
authorizations, approvals,

27

 

orders, consents, certificates, permits, registrations or qualifications or their
failure to be in full force and effect would not, individually or in the aggregate, have a
material adverse effect on the consolidated financial position, shareholders’ equity or
results of operations of the Company and its subsidiaries, taken as a whole. To such
counsel’s knowledge, Platinum US has not received any notification from any insurance
regulatory authority or other governmental authority in the United States, Ireland, the
United Kingdom, Bermuda or elsewhere to the effect that any additional authorization,
approval, order, consent, certificate, permit, registration or qualification is needed to be
obtained by Platinum US; and, to such counsel’s knowledge, no insurance regulatory authority
has issued any order or decree impairing, restricting or prohibiting the payment of
dividends by Platinum US to its parent;

     Such counsel shall also furnish to you his written opinion that nothing came to his
attention in the course of his review that has caused such counsel to believe that the
Offering Circular, as of its date, and the documents incorporated therein by reference which
were filed under the Exchange Act, as of their respective dates (in each case, other than
the financial statements and related notes and schedules and other financial information
therein, as to which he need express no opinion) contained any untrue statement of a
material fact or omitted to state any material fact necessary in order to make the
statements therein, in the light of the circumstances under which they were made, not
misleading. Also, nothing has come to his attention that has caused him to believe that, as
of the date and time of delivery of his written opinion, the Offering Circular (other than
the financial statements and related notes and schedules and other financial information
therein, as to which he need express no opinion), contained any untrue statement of a
material fact or omitted to state any material fact necessary in order to make the
statements therein, in the light of the circumstances under which they were made, not
misleading. Such counsel shall state that he does not assume any responsibility for the
accuracy or completeness of the statements contained in the Offering Circular, or in any of
the documents incorporated by reference in the Offering Circular or in any further amendment
or supplement thereto which were filed under the Exchange Act.

     In giving such opinion, such counsel may state that with respect to all matters of
United States federal and New York law he has relied upon the opinions of United States
counsel for the Company delivered pursuant to this Section 7.

     (e) Funk & Bolton, P.A., outside Maryland insurance regulatory counsel for the Company, shall
have furnished to you such written opinion or opinions (a draft of such opinion or opinions are
attached as Annex II(g) hereto) dated the Time of Delivery, in form and substance satisfactory to
you, to the effect that:

     (i) The summaries of the provisions of the insurance laws of the State of Maryland made
in the Offering Circular and in the Company’s Annual Report on Form 10-K for the fiscal year
ended December 31, 2004 under the caption “Business—Regulation—U.S. Regulation” are true and
complete in all material respects. Such counsel may state that they do not assume any
responsibility for the accuracy or completeness of the statements made in the Offering
Circular, the Company’s Report on Form 10-K for the fiscal year ended December 31, 2004, or
any of the documents incorporated therein by reference which were filed under the Exchange
Act, except for the summaries of the provisions of the insurance laws of the

28

 

State of Maryland made under the caption “Business—Regulation—U.S. Regulation” in the
Offering Circular and the Company’s Annual Report on From 10-K for the fiscal year ended
December 31, 2004.

     (f) On the date of the Offering Circular at a time prior to the execution of this Agreement,
and also at the Time of Delivery, KPMG, LLP shall have furnished to you a letter or letters, dated
the respective dates of delivery thereof, in form and substance satisfactory to you, to the effect
set forth in Annex I hereto; (the executed copy of the letter delivered prior to the execution of
this Agreement is attached as Annex I(a) hereto and a draft of the form of the letter to be
delivered as of the Time of Delivery is attached as Annex I(b) hereto);

     (g) (i) Neither the Company nor any of its subsidiaries shall have sustained since the date of
the latest audited financial statements included or incorporated by reference in the Offering
Circular, any loss or interference with its business from fire, explosion, flood or other calamity,
whether or not covered by insurance, or from any labor dispute or court or governmental action,
order or decree, otherwise than as set forth or contemplated in the Offering Circular, and (ii)
since the respective dates as of which information is given in the Offering Circular, there shall
not have been any change in the capital stock, capital or surplus or long-term debt of the Company
(other than upon exercise of director or employee options in the ordinary course of business
pursuant to an employee plan of the Company, or upon the exercise, conversion or exchange of
convertible or exchangeable securities or options in the ordinary course of business outstanding as
of the date of this Agreement or upon the exercise of the purchase contracts forming a part of the
Company’s equity security units in the ordinary course of business outstanding as of the date of
this Agreement) or any of its subsidiaries or any change, or any development involving a
prospective change, in or affecting the general affairs, management, financial position,
shareholders’ equity or results of operations of the Company and its subsidiaries, taken as a
whole, otherwise than as set forth or contemplated in the Offering Circular, the effect of which,
in any such case described in clause (i) or (ii), is in the judgment of the Purchaser so material
and adverse as to make it impracticable or inadvisable to proceed with the offering contemplated
hereby or the delivery of the Securities and the Guarantees being delivered at the Time of Delivery
on the terms and in the manner contemplated in the Offering Circular;

     (h) On or after the date hereof (i) no downgrading shall have occurred in the rating accorded
the Company’s or Platinum Finance’s securities or the Company’s or Platinum Finance’s financial
strength or claims paying ability by any “nationally recognized statistical rating organization,”
as that term is defined by the Commission for purposes of Rule 436(g)(2) under the Act, and (ii) no
such organization shall have publicly announced that it has under surveillance or review, with
possible negative implications, its rating of any of the Company’s or Platinum Finance’s securities
or the Company’s or Platinum Finance’s financial strength or claims paying ability;

     (i) On or after the date hereof there shall not have occurred any of the following: (i) a
suspension or material limitation in trading in securities generally on the New York Stock
Exchange; (ii) a suspension or material limitation in trading in the Company’s or Platinum
Finance’s securities on the New York Stock Exchange; (iii) a general moratorium on commercial
banking activities in New York or London declared by the relevant authorities or a material
disruption in commercial banking or securities settlement or clearance services in the United
States or the United Kingdom; (iv) a change

29

 

or development involving a prospective change in Bermuda taxation affecting the Company, or
Platinum Finance, as applicable, or the Securities, the Guarantees or the transfer thereof; (v) the
outbreak or escalation of hostilities involving the United States, the United Kingdom or Bermuda or
the declaration by the United States, the United Kingdom or Bermuda of a national emergency or war
or (vi) the occurrence of any other calamity or crisis or any change in financial, political or
economic conditions in the United States, the United Kingdom, Bermuda or elsewhere, if the effect
of any such event specified in clause (v) or (vi) in the judgment of the Purchaser makes it
impracticable or inadvisable to proceed with the offering contemplated hereby or the delivery of
the Securities and the Guarantees being delivered at the Time of Delivery on the terms and in the
manner contemplated in the Offering Circular;

     (j) The Company shall have complied with the provisions of Section 5(c) hereof with respect to
the furnishing of Offering Circulars on the New York Business Day next succeeding the date of this
Agreement;

     (k) The Company and Platinum Finance shall have furnished or caused to be furnished to you at
the Time of Delivery certificates of officers of the Company and Platinum Finance reasonably
satisfactory to you as to the accuracy of the representations and warranties of the Company and
Platinum Finance herein at and as of the Time of Delivery, as to the performance by the Company and
Platinum Finance of all of their respective obligations hereunder to be performed at or prior to
the Time of Delivery, as to the matters set forth in subsection (g) this Section 7 and as to such
other matters as you may reasonably request; and

     (l) Each of the Company and Platinum Finance shall have entered into the 2005 Registration
Rights Agreement.

     8. (a) Each of the Company and Platinum Finance, jointly and severally will indemnify and
hold harmless the Purchaser against any losses, claims, damages or liabilities, joint or several,
to which the Purchaser may become subject, under the Act or otherwise, insofar as such losses,
claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon an
untrue statement or alleged untrue statement of a material fact contained in any Preliminary
Offering Circular or the Offering Circular, or any amendment or supplement thereto, or arise out of
or are based upon the omission or alleged omission to state therein a material fact necessary to
make the statements therein not misleading, and will reimburse the Purchaser for any legal or other
expenses reasonably incurred by the Purchaser in connection with investigating or defending any
such action or claim as such expenses are incurred; provided, however, that neither the Company nor
Platinum Finance shall be liable in any such case to the extent that any such loss, claim, damage
or liability arises out of or is based upon an untrue statement or alleged untrue statement or
omission or alleged omission made in any Preliminary Offering Circular or the Offering Circular or
any such amendment or supplement in reliance upon and in conformity with written information
furnished to the Company or Platinum Finance by the Purchaser expressly for use therein.

     (b) The Purchaser will indemnify and hold harmless the Company and Platinum Finance against
any losses, claims, damages or liabilities to which the Company may become subject, under the Act
or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect
thereof) arise out of or are based upon an untrue statement or alleged untrue statement of a
material fact contained in any Preliminary Offering Circular or the Offering Circular, or any
amendment or

30

 

supplement thereto, or arise out of or are based upon the omission or alleged omission to
state therein a material fact or necessary to make the statements therein not misleading, in each
case to the extent, but only to the extent, that such untrue statement or alleged untrue statement
or omission or alleged omission was made in any Preliminary Offering Circular or the Offering
Circular or any such amendment or supplement in reliance upon and in conformity with written
information furnished to the Company or Platinum Finance by the Purchaser expressly for use
therein; and will reimburse the Company and Platinum Finance for any legal or other expenses
reasonably incurred by the Company or Platinum Finance in connection with investigating or
defending any such action or claim as such expenses are incurred.

     (c) Promptly after receipt by an indemnified party under subsection (a) or (b) above of notice
of the commencement of any action, such indemnified party shall, if a claim in respect thereof is
to be made against the indemnifying party under such subsection, notify the indemnifying party in
writing of the commencement thereof; provided, however, that the omission to notify the
indemnifying party shall not relieve it from any liability which it may have to any indemnified
party, except to the extent it has been materially prejudiced thereby, and in any event it shall
not relieve it from any liability otherwise than under subsection (a) or (b) of this Section 8. In
case any such action shall be brought against any indemnified party and it shall notify the
indemnifying party of the commencement thereof, the indemnifying party shall be entitled to
participate therein and, to the extent that it shall wish, jointly with any other indemnifying
party similarly notified, to assume the defense thereof, with counsel reasonably satisfactory to
such indemnified party (who shall not, except with the consent of the indemnified party, be counsel
to the indemnifying party), and, after notice from the indemnifying party to such indemnified party
of its election so to assume the defense thereof, the indemnifying party shall not be liable to
such indemnified party under such subsection for any legal expenses of other counsel or any other
expenses, in each case subsequently incurred by such indemnified party, in connection with the
defense thereof other than reasonable costs of investigation. No indemnifying party shall, without
the written consent of the indemnified party, effect the settlement or compromise of, or consent to
the entry of any judgment with respect to, any pending or threatened action or claim in respect of
which indemnification or contribution may be sought hereunder (whether or not the indemnified party
is an actual or potential party to such action or claim) unless such settlement, compromise or
judgment (i) includes an unconditional release of the indemnified party from all liability arising
out of such action or claim and (ii) does not include a statement as to, or an admission of, fault,
culpability or a failure to act, by or on behalf of any indemnified party.

     (d) If the indemnification provided for in this Section 8 is unavailable to or insufficient to
hold harmless an indemnified party under subsection (a) or (b) above in respect of any losses,
claims, damages or liabilities (or actions in respect thereof) referred to therein, then each
indemnifying party shall contribute to the amount paid or payable by such indemnified party as a
result of such losses, claims, damages or liabilities (or actions in respect thereof) in such
proportion as is appropriate to reflect the relative benefits received by the Company and Platinum
Finance on the one hand and the Purchaser on the other from the offering of the Securities and the
Guarantees. If, however, the allocation provided by the immediately preceding sentence is not
permitted by applicable law or if the indemnified party failed to give the notice required under
subsection (c) above, then each indemnifying party shall contribute to such amount paid or payable
by such indemnified party in such proportion as is appropriate to reflect not only such relative
benefits but also the relative fault of the Company and Platinum Finance on the one hand and the
Purchaser on the other in connection with the statements or omissions which resulted in such
losses, claims, damages or liabilities (or actions in respect thereof), as well as any other
relevant equitable considerations. The relative benefits

31

 

received by the Company and Platinum Finance on the one hand and the Purchaser on the other
shall be deemed to be in the same proportion as the total net proceeds from the offering of the
Securities and the Guarantees purchased under this Agreement (before deducting expenses) received
by the Platinum Finance bear to the total underwriting discounts and commissions received by the
Purchaser, in each case as set forth in the Offering Circular. The relative fault shall be
determined by reference to, among other things, whether the untrue or alleged untrue statement of a
material fact or the omission or alleged omission to state a material fact relates to information
supplied by the Company and Platinum Finance on the one hand or the Purchaser on the other and the
parties’ relative intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission. The Company, Platinum Finance and the Purchaser agree that it would not
be just and equitable if contribution pursuant to this subsection (d) were determined by pro rata
allocation or by any other method of allocation which does not take account of the equitable
considerations referred to above in this subsection (d). The amount paid or payable by an
indemnified party as a result of the losses, claims, damages or liabilities (or actions in respect
thereof) referred to above in this subsection (d) shall be deemed to include any legal or other
expenses reasonably incurred by such indemnified party in connection with investigating or
defending any such action or claim. Notwithstanding the provisions of this subsection (d), the
Purchaser shall not be required to contribute any amount in excess of the amount by which the total
price at which the Securities (and the Guarantees) underwritten by it and distributed to investors
were offered to investors exceeds the amount of any damages which the Purchaser has otherwise been
required to pay by reason of such untrue or alleged untrue statement or omission or alleged
omission.

     (e) The obligations of the Company and Platinum Finance under this Section 8 shall be in
addition to any liability which the Company and Platinum Finance may otherwise have and shall
extend, upon the same terms and conditions, to each person, if any, who controls the Purchaser
within the meaning of the Act; and the obligations of the Purchaser under this Section 8 shall be
in addition to any liability which the Purchaser may otherwise have and shall extend, upon the same
terms and conditions, to each officer and director of the Company or Platinum Finance and to each
person, if any, who controls the Company or Platinum Finance within the meaning of the Act.

     9. The respective indemnities, agreements, representations, warranties and other statements of
the Company, Platinum Finance and the Purchaser, as set forth in this Agreement or made by or on
behalf of them, respectively, pursuant to this Agreement, shall remain in full force and effect,
regardless of any investigation (or any statement as to the results thereof) made by or on behalf
of the Purchaser or any controlling person of the Purchaser, or the Company or Platinum Finance, or
any officer or director or controlling person of the Company or Platinum Finance, and shall survive
delivery of and payment for the Securities and the Guarantees.

     10. If this Agreement shall be terminated pursuant to any of the provisions hereof, the
Company and Platinum Finance shall not then be under any liability to the Purchaser except as
provided in Sections 6 and 8 hereof; but, if for any other reason, the Securities and the
Guarantees are not delivered by or on behalf of the Company and Platinum Finance, as provided
herein, the Company and Platinum Finance, jointly and severally, will reimburse the Purchaser
through you for all out-of-pocket expenses approved in writing by you, including fees and
disbursements of counsel, reasonably incurred by the Purchaser in making preparations for the
purchase, sale and delivery of the Securities and the Guarantees, but the Company and Platinum
Finance shall then be under no further liability to the Purchaser except as provided in Sections 6
and 8 hereof.

32

 

     11. In respect of any judgment or order given or made for any amount due hereunder that is
expressed and paid in currency (the “judgment currency”) other than United States dollars, the
party against whom such judgment or order has been given or made will indemnify each party in whose
favor such judgment or order has been given or made (the “Indemnitee”) against any loss incurred by
the Indemnitee as a result of any variation as between (i) the rate of exchange at which the United
States dollar amount is converted into the judgment currency for the purpose of such judgment or
order and (ii) the rate of exchange at which the Indemnitee is able to purchase United States
dollars with the amount of the judgment currency actually received by such Indemnitee. The
foregoing indemnity shall constitute a separate and independent obligation of the Company and
Platinum Finance, jointly and severally, and the Purchaser and shall continue in full force and
effect notwithstanding any such judgment or order as aforesaid. The term “rate of exchange” shall
include any premiums and costs of exchange payable in connection with the purchase of or conversion
into United States dollars.

     12. All statements, requests, notices and agreements hereunder shall be in writing, and if to
the Purchaser shall be delivered or sent by mail or facsimile transmission to you at 85 Broad
Street, New York, New York 10004, Attention: Registration Department; and if to the Company or
Platinum Finance shall be delivered or sent by mail, telex or facsimile transmission to the address
of the Company set forth in the Offering Circular, Attention: Secretary. Any such statements,
requests, notices or agreements shall take effect upon receipt thereof.

     13. This Agreement shall be binding upon, and inure solely to the benefit of, the Purchaser,
the Company, Platinum Finance and, to the extent provided in Sections 8 and 9 hereof, the officers
and directors of the Company and Platinum Finance and each person who controls the Company,
Platinum Finance or the Purchaser, and their respective heirs, executors, administrators,
successors and assigns, and no other person shall acquire or have any right under or by virtue of
this Agreement. No purchaser of any of the Securities and the Guarantees from the Purchaser shall
be deemed a successor or assign by reason merely of such purchase.

     14. Time shall be of the essence of this Agreement. As used herein, the term “business day”
shall mean any day when the Commission’s office in Washington, D.C. is open for business.

     15. This Agreement shall be governed by and construed in accordance with the laws of the State
of New York, without regard to the conflicts of laws rules of such state.

     16. This Agreement may be executed by any one or more of the parties hereto in any number of
counterparts, each of which shall be deemed to be an original, but all such respective counterparts
shall together constitute one and the same instrument.

     17. Notwithstanding anything herein to the contrary, the Company and Platinum Finance are
authorized to disclose to any persons the tax treatment and tax structure of the potential
transaction and all materials of any kind (including tax opinions and other tax analyses) provided
to the Company and Platinum Finance relating to that treatment and structure, without the Purchaser
imposing any limitation of any kind. However, any information relating to the tax treatment and tax
structure shall remain confidential (and the foregoing sentence shall not apply) to the extent
necessary to enable any person to comply with securities laws. For this purpose, “tax structure” is
limited to any facts that may be relevant to that treatment.

33

 

     If the foregoing is in accordance with your understanding, please sign and return to us
counterparts hereof, and upon the acceptance hereof by you, on behalf of the Purchaser, this letter
and such acceptance hereof shall constitute a binding agreement among the Purchaser, the Company,
and Platinum Finance.

	 	 	 	 	 
	 	 	Very truly yours,
	 
	 	 	 	 
	 	 	Platinum Underwriters Holdings, Ltd.
	 
	 	 	 	 
	

	 	By:	 	/s/ Gregory E.A. Morrison
	

	 	 	 	 
	

	 	 	 	Name: Gregory E.A. Morrison

Title: President and Chief Executive Officer
	 
	 	 	 	 
	 	 	Platinum Underwriters Finance, Inc.
	 
	 	 	 	 
	

	 	By:	 	/s/ Gregory E.A. Morrison
	

	 	 	 	 
	

	 	 	 	Name: Gregory E.A. Morrison

Title: President and Chief Executive Officer

Accepted as of the date hereof:

Goldman, Sachs & Co.

	 	 	 	 	 
	By:
	 	/s/ Goldman, Sachs & Co.	 	 
	

	 	

	 	 
	

	 	Name: 

Title:	 	 

[Senior Notes Purchase Agreement]

 

 

ANNEX I

FORM OF COMFORT LETTER

     Pursuant to Section 7(f) of the Purchase Agreement, the accountants shall furnish letters to
the Purchaser to the effect that:

     (i) They are an independent registered public accounting firm with respect to the
Company, Predecessor and their respective subsidiaries within the meaning of the Act and the
applicable published rules and regulations thereunder and the Public Company Accounting
Oversight Board (United States) (the “PCAOB”);

     (ii) In their opinion, the financial statements and any supplementary financial
information and schedules examined by them and included or incorporated by reference in the
Offering Circular comply as to form in all material respects with the applicable accounting
requirements of the Act or the Exchange Act, as applicable, and the related published rules
and regulations thereunder; and they have made a review in accordance with standards
established by the PCAOB of the consolidated interim financial statements and selected
financial data derived from audited financial statements of the Company and Predecessor for
the periods specified in such letter;

     (iii) They have made a review in accordance with standards established by the PCAOB of
the unaudited condensed consolidated statements of income, consolidated balance sheets and
consolidated statements of cash flows included in the Offering Circular and/or included in
the Company’s quarterly report on Form 10-Q included in or incorporated by reference into
the Offering Circular; and on the basis of specified procedures including inquiries of
officials of the Company who have responsibility for financial and accounting matters
regarding whether the unaudited condensed consolidated financial statements referred to in
paragraph (v)(A)(i) below comply as to form in all material respects with the applicable
accounting requirements of the Act and the Exchange Act and the related published rules and
regulations, nothing came to their attention that caused them to believe that the unaudited
condensed consolidated financial statements do not comply as to form in all material
respects with the applicable accounting requirements of the Act and the Exchange Act and the
related published rules and regulations;

     (iv) The unaudited selected financial information with respect to the consolidated
results of operations and financial position of the Company for the years ended December 31,
2004 and 2003, and the period ended December 31, 2002, and with respect to the results of
operations of Predecessor for the period January 1, 2002, through November 1, 2002 and for
the years ended December 31, 2001 and 2000 included in the Offering Circular and included or
incorporated by reference in Item 6 of the Company’s Annual Report on Form 10-K for the most
recent fiscal year agrees with the corresponding amounts (after restatement where
applicable) in the audited consolidated financial statements for such fiscal years and
periods of the Company and the Predecessor, as applicable, which were included or
incorporated by reference in the Annual Reports on Form 10-K for the Company or the
Predecessor, as applicable, for such fiscal years;

 

 

     (v) On the basis of limited procedures, not constituting an examination in accordance
with generally accepted auditing standards, consisting of a reading of the unaudited
financial statements and other information referred to below, a reading of the latest
available interim financial statements of the Company and its subsidiaries, inspection of
the minute books of the Company its subsidiaries since the date of the latest audited
financial statements included or incorporated by reference in the Offering Circular,
inquiries of officials of the Company and its subsidiaries responsible for financial and
accounting matters and such other inquiries and procedures as may be specified in such
letter, nothing came to their attention that caused them to believe that:

     (A) (i) the unaudited condensed consolidated statements of income,
consolidated balance sheets and consolidated statements of cash flows (x) included
in the Offering Circular and/or (y) included in the Offering Circular or
incorporated by reference from the Company’s Quarterly Reports on Form 10-Q do not
comply as to form in all material respects with the applicable accounting
requirements of the Exchange Act as it applies to Form 10-Q and the related
published rules and regulations, or (ii) any material modifications should be made
to the unaudited condensed consolidated statements of income, consolidated balance
sheets and consolidated statements of cash flows included in the Offering Circular
or included in the Company’s Quarterly Reports on Form 10-Q incorporated by
reference in the Offering Circular for them to be in conformity with generally
accepted accounting principles;

     (B) any other unaudited income statement data and balance sheet items included
in the Offering Circular do not agree with the corresponding items in the unaudited
consolidated financial statements from which such data and items were derived, and
any such unaudited data and items were not determined on a basis substantially
consistent with the basis for the corresponding amounts in the audited consolidated
financial statements included in the Offering Circular or incorporated by reference
from the Company’s Annual Report on Form 10-K for the most recent fiscal year;

     (C) the unaudited financial statements which were not included in the Offering
Circular but from which were derived any unaudited condensed financial statements
referred to in clause (A) and any unaudited income statement data and balance sheet
items included in the Offering Circular and referred to in clause (B) were not
determined on a basis substantially consistent with the basis for the audited
consolidated financial statements included in the Offering Circular or incorporated
by reference from the Company’s Annual Report on Form 10-K for the most recent
fiscal year;

     (D) as of a specified date not more than five days prior to the date of such
letter, there have been any changes in the common shares or capital (other than
issuances of shares upon exercise of director or employee options, upon the
exercise, conversion or exchange of convertible or exchangeable securities or
options or upon the exercise of the purchase contracts forming a part of the
Company’s equity security units, in each case which were outstanding on the date of
the latest balance sheet included or incorporated by reference in the Offering
Circular) or any increase in the debt obligations of the Company and its
subsidiaries,

2

 

in each case as compared with amounts shown in the latest balance sheet
included or incorporated by reference in the Offering Circular, except in each case
for changes, increases or decreases which the Offering Circular discloses have
occurred or may occur or which are described in such letter; and

     (vi) In addition to the examination referred to in their report(s) included or
incorporated by reference in the Offering Circular and the limited procedures, inspection of
minute books, inquiries and other procedures referred to in paragraphs (iii) and (v) above,
they have carried out certain specified procedures, not constituting an examination in
accordance with generally accepted auditing standards, with respect to certain amounts,
percentages and financial information specified by the Purchaser, which are derived from the
general accounting records of the Company, Predecessor and their respective subsidiaries,
which appear in the Offering Circular (excluding documents incorporated by reference), or in
documents incorporated by reference in the Offering Circular specified by the Purchaser, and
have compared certain of such amounts, percentages and financial information with the
accounting records of the Company, Predecessor and their respective subsidiaries and have
found them to be in agreement.

3

 

ANNEX II

     (1) The Securities (and the Guarantees) have not been and will not be registered under the Act
and may not be offered or sold within the United States or to, or for the account or benefit of,
U.S. persons except in accordance with Regulation S under the Act or pursuant to an exemption from
the registration requirements of the Act. The Purchaser represents that it has offered and sold
the Securities and the Guarantees, and will offer and sell the Securities and the Guarantees (i) as
part of its distribution at any time and (ii) otherwise until 40 days after the later of the
commencement of the offering and the Time of Delivery, only in accordance with Rule 903 of
Regulation S or Rule 144A under the Act. Accordingly, the Purchaser agrees that neither it, its
affiliates nor any persons acting on its or their behalf has engaged or will engage in any directed
selling efforts with respect to the Securities and the Guarantees, and it and they have complied
and will comply with the offering restrictions requirement of Regulation S. The Purchaser agrees
that, at or prior to confirmation of sale of Securities and the Guarantees (other than a sale
pursuant to Rule 144A or pursuant to Paragraph 2 of this Annex II), it will have sent to each
distributor, dealer or person receiving a selling concession, fee or other remuneration that
purchases Securities and the Guarantees from it during the restricted period a confirmation or
notice to substantially the following effect:

“The Securities and the Guarantees covered hereby have not been registered under the U.S.
Securities Act of 1933 (the “Securities Act”) and may not be offered and sold within the
United States or to, or for the account or benefit of, U.S. persons (i) as part of their
distribution at any time or (ii) otherwise until 40 days after the later of the commencement
of the offering and the closing date, except in either case in accordance with Regulation S
(or Rule 144A if available) under the Securities Act. Terms used above have the meaning
given to them by Regulation S.”

Terms used in this paragraph have the meanings given to them by Regulation S.

           The Purchaser further agrees that it has not entered and will not enter into any contractual
arrangement with respect to the distribution or delivery of the Securities and the Guarantees,
except with its affiliates or with the prior written consent of the Company.

           (2) Notwithstanding the foregoing, Securities (and the Guarantees) in registered form may be
offered, sold and delivered by the Purchaser in the United States and to U.S. persons pursuant to
Section 3(a)(i) of this Agreement without delivery of the written statement required by paragraph
(1) above.

           (3) The Purchaser has represented, warranted and agreed that: (i) it has not offered or sold
and, prior to the expiry of a period of six months from the Time of Delivery, will not offer or
sell any Securities (and the Guarantees) to persons in the United Kingdom except to persons whose
ordinary activities involve them in acquiring, holding, managing or disposing of investments (as
principal or agent) for the purposes of their businesses or otherwise in circumstances which have
not resulted and will not result in an offer to the public in the United Kingdom within the meaning
of the Public Offers of Securities Regulations 1995; (ii) it has only communicated or caused to be

 

 

communicated and will only communicate or cause to be communicated any invitation or
inducement to engage in investment activity (within the meaning of section 21 of the Financial
Services and Markets Act 2000 (“FSMA”)) received by it in connection with the issue or sale of any
Securities (and the Guarantees) in circumstances in which section 21(1) of the FSMA does not apply
to the Issuer; and (iii) it has complied and will comply with all applicable provisions of the FSMA
with respect to anything done by it in relation to the Securities (and the Guarantees) in, from or
otherwise involving the United Kingdom.

     (4) The Purchaser has agreed that it will not offer or sell any securities, directly or
indirectly, in Japan or to, or for the benefit of, any resident of Japan (which term as used herein
means any person resident in Japan, including any corporation or other entity organized under the
laws of Japan), or to others for re-offering or resale, directly or indirectly, in Japan or to a
resident of Japan, except pursuant to an exemption from the registration requirements of, and
otherwise in compliance with, the Securities and Exchange Law of Japan and any other applicable
laws, regulations and ministerial guidelines of Japan.

     (5) The Purchaser agrees that it will not offer, sell or deliver any of the Securities (and
the Guarantees) in any jurisdiction outside the United States except under circumstances that will
result in compliance with the applicable laws thereof, and that it will take at its own expense
whatever action is required to permit its purchase and resale of the Securities and the Guarantees
in such jurisdictions. The Purchaser understands that no action has been taken to permit a public
offering in any jurisdiction outside the United States where action would be required for such
purpose.

2

 

Schedule I

	 	 	 	 	 	 	 	 
	 	 	 
	 	Filed Agreements to which Platinum Underwriters Holdings, Ltd., a Bermuda company	 	 	 	 
	 	(the “Company”), is a party	 	 	Governing Law	 
	 	 	 	 	 	 
	 	•

	 	Formation and Separation Agreement, dated as of October 28, 2002 (the
“Formation and Separation Agreement”), between the Company and St. Paul (as
defined herein).
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Master Services Agreement, dated
November 1, 2002 (the “Master Services
Agreement”), as amended by that certain Letter Agreement dated June 30,
between the Company and St. Paul.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Registration Rights Agreement, dated November 1, 2002 (the
“Registration
Rights Agreement”), between the Company and St. Paul.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Option Agreement, dated November 1, 2002 (the “St. Paul Option
Agreement”), between the Company and St. Paul.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Option Agreement, dated November 1, 2002 (the “Fire and Marine Option
Agreement”), between the Company, St. Paul and Fire and Marine
(as defined herein).
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Option Agreement, dated November 1, 2002 (the “St. Paul Re UK Option
Agreement”), between the Company, St. Paul and St. Paul Reinsurance
Company Limited, a limited liability company incorporated under the
laws of England (“St. Paul Re UK”).
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Purchase Contract Agreement, dated as of November 1, 2002, between the
Company and JPMorgan Chase Bank, as Purchase Contract Agent.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Indenture, dated October 10,
2002 (the “Base Indenture”), among the
Company, Platinum Finance (as defined herein) and JPMorgan Chase Bank, as
Trustee.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	First Supplemental Indenture, dated November 1, 2002 (the “Supplemental
Indenture”), among the Company, Platinum Finance and JPMorgan Chase
Bank as Trustee.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Pledge Agreement, dated as of November 1, 2002 (the “Pledge
Agreement”), among the Company, State Street Bank and Trust Company, as
Collateral Agent, Custodial Agent and Securities Intermediary, and JPMorgan
Chase Bank, as Purchase Contract Agent.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Investment Agreement, dated September 20, 2002, as amended (the “RenRe
Investment Agreement”), among the Company, St. Paul and RenRe (as defined
herein).
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Transfer Restrictions, Registration Rights and Standstill Agreement,
dated November 1, 2002 (the “Transfer Restrictions, Registration Rights and
Standstill Agreement”), between the Company and RenRe.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Option Agreement, dated November 1, 2002 (the “RenRe Option
Agreement”), between the Company and RenRe.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Services and Capacity Reservation Agreement, dated as of November 1,
2002 (the “Services and Capacity Reservation Agreement”), between the Company
and RenRe.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Guaranty dated as of
December 31, 2003 (the “US Guaranty”) between the
	 	 	New York	 
	 	 	 	 	 	 

 

 

	 	 	 	 	 	 	 	 
	 	 	 
	 	Filed Agreements to which Platinum Underwriters Holdings, Ltd., a Bermuda company	 	 	 	 
	 	(the “Company”), is a party	 	 	Governing Law	 
	 	 	 	 	 	 
	 	

	 	Company, as Guarantor, and Platinum US (as defined herein).	 	 	 	 
	 	 	 	 	 	 
	 	•

	 	Guarantee dated as of
December 31, 2003 (the “UK Guarantee”) between
the Company, as Guarantor, and Platinum UK (as defined herein).
	 	 	England and Wales	 
	 	 	 	 	 	 
	 	•

	 	Separation Agreement dated June 24, 2004 between William A. Robbie and
the Company.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Employment Agreement dated June 24, 2004 between Joseph F. Fisher and
the Company.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Amendment dated January 10, 2005 to the St. Paul Re UK Option
Agreement.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Amendment dated January 10, 2005 to the St. Paul Option Agreement.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Amended and Restated Option Agreement dated November 18, 2004 between
the Company and RenRe (as defined herein).
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Investment Manager Agreement dated May 12, 2005 (the “BlackRock
Investment Manager Agreement I”) between the Company, Platinum Bermuda (as
defined herein), Platinum Ireland (as defined herein) and BlackRock Financial
Management, Inc. (“BlackRock”).
	 	 	New York	 
	 	 	 	 	 	 

	 	 	 	 	 	 	 	 
	 	 	 
	 	Filed Agreements to which Platinum Underwriters Finance, Inc., a Delaware	 	 	 	 
	 	corporation (“Platinum Finance”), is a party	 	 	Governing Law	 
	 	 	 	 	 	 
	 	•

	 	Base Indenture
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Supplemental Indenture
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Investment Manager Agreement dated May 12, 2005 (the “BlackRock
Investment Manager Agreement II”) between Platinum US, Platinum Finance and
BlackRock.
	 	 	New York	 
	 	 	 	 	 	 

	 	 	 	 	 	 	 	 
	 	 	 
	 	Filed Agreements to which Platinum Underwriters Reinsurance Inc., a Maryland	 	 	 	 
	 	domiciled insurance company (“Platinum US”), is a party	 	 	Governing Law	 
	 	 	 	 	 	 
	 	•

	 	Employee Benefits and Compensation Matters Agreement, dated November
1, 2002 (the “Employee Matters Agreement”), between St. Paul and Platinum US.
	 	 	 New York	 
	 	 	 	 	 	 
	 	•

	 	Run-off Services Agreement, dated
November 1, 2002 (the “US Run-Off
Services Agreement”), between Platinum US, Mountain Ridge (as defined herein)
and Fire & Marine.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Underwriting Management Agreement,
dated November 1, 2002 (the “US
Underwriting Agreement”), between Platinum US and Fire & Marine.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	100% Quota Share Retrocession
Agreement (Traditional), dated November 1, 2002 (the “US
Quota Share Traditional”), between
Platinum US and Fire & Marine.
	 	 	Minnesota	 
	 	 	 	 	 	 
	 	•
	 	100% Quota Share Retrocession Agreement (Non-Traditional – D-1), dated
as of the First Time of Delivery (the “US Quota Share
Non-Traditional D-1”),
between Platinum US and Mountain Ridge.	 	 	Vermont	 
	 	 	 	 	 	 
	 	•

	 	100% Quota Share Retrocession Agreement (Non-Traditional – A), dated
November 1, 2002 (the “US Quota Share Non-Traditional A”), between Platinum U
and Fire & Marine.
	 	 	Minnesota	 
	 	 	 	 	 	 
	 	•

	 	100% Quota Share Retrocession Agreement (Non-Traditional – B-1), dated
November 1, 2002 (the “US Quota Share Non-Traditional
B-1”), between Platinum
US and Fire & Marine.
	 	 	Minnesota	 
	 	 	 	 	 	 
	 	•

	 	100% Quota Share Retrocession Agreement (Non-Traditional – B-2), dated
	 	 	Minnesota	 
	 	 	 	 	 	 

F-2

 

	 	 	 	 	 	 	 	 
	 	 	 
	 	Filed Agreements to which Platinum Underwriters Reinsurance Inc., a Maryland	 	 	 	 
	 	domiciled insurance company (“Platinum US”), is a party	 	 	Governing Law	 
	 	 	 	 	 	 
	 	

	 	November 1, 2002 (the
“US Quota Share Non-Traditional B-2”), between Platinum
US and Fire & Marine.	 	 	 	 
	 	 	 	 	 	 
	 	•

	 	100% Quota Share Retrocession Agreement (Non-Traditional – C), dated
November 1, 2002 (the “US Quota Share Non-Traditional C”), between Platinum U
and Fire & Marine.
	 	 	Minnesota	 
	 	 	 	 	 	 
	 	•

	 	100% Quota Share Retrocession Agreement (Non-Traditional – D Stop
Loss), dated as of the First Time of Delivery (the “US Quota Share
Non-Traditional D Stop Loss”), between Platinum US and Mountain Ridge.
	 	 	Vermont	 
	 	 	 	 	 	 
	 	•

	 	100% Quota Share Retrocession Agreement (Non-Traditional – D Spread
Loss), dated November 1, 2002 (the “US Quota Share Non-Traditional D Spread
Loss”), between Platinum US and Fire & Marine.
	 	 	Minnesota	 
	 	 	 	 	 	 
	 	•

	 	100% Quota Share Retrocession Agreement (Non-Traditional – D-3), dated
November 1, 2002 (the “US Quota Share Non-Traditional
D-3”), between Platinum
US and Fire & Marine.
	 	 	Minnesota	 
	 	 	 	 	 	 
	 	•

	 	100% Quota Share Retrocession Agreement (Non-Traditional – D-4), dated
November 1, 2002 (the “US Quota Share Non-Traditional
D-4”), between Platinum
US and Fire & Marine.
	 	 	Minnesota	 
	 	 	 	 	 	 
	 	•

	 	100% Quota Share Retrocession Agreement (Non-Traditional – E), dated
November 1, 2002 (the “US Quota Share Non-Traditional E”), between Platinum U
and Fire & Marine.
	 	 	Minnesota	 
	 	 	 	 	 	 
	 	•

	 	100% Quota Share Retrocession Agreement (Traditional), dated November
1, 2002 (the “UK Quota Share Traditional”), between Platinum US and St. Paul
Re UK.
	 	 	England	 
	 	 	 	 	 	 
	 	•

	 	100% Quota Share Retrocession Agreement (Non-Traditional – A), dated
November 1, 2002 (the “UK Quota Share Non-Traditional A”), between Platinum U
and St. Paul Re UK.
	 	 	England	 
	 	 	 	 	 	 
	 	•

	 	100% Quota Share Retrocession Agreement (Non-Traditional – B-1), dated
November 1, 2002 (the “UK Quota Share Non-Traditional
B-1”), between Platinum
US and St. Paul Re UK.
	 	 	England	 
	 	 	 	 	 	 
	 	•

	 	Revised and Amended Trust Agreement, dated November 1, 2002, as
amended December 12, 2002 (the “Fire and Marine Trust
Agreement”), among
Platinum US, Fire and Marine and the Trustee Bank named therein.
	 	 	Massachusetts	 
	 	 	 	 	 	 
	 	•

	 	Revised and Amended Trust Agreement, dated as of November 1, 2002 and
amended as of December 12, 2002 (the “Mountain Ridge
Trust Agreement”), among
Platinum US, Mountain Ridge and the Trustee Bank named therein.
	 	 	Massachusetts	 
	 	 	 	 	 	 
	 	•

	 	Trust Agreement effective as of January 1, 2003 (the “Bermuda Trust
Agreement”) among Platinum Bermuda (as defined herein), Platinum US and State
Street Bank and Trust Company.
	 	 	Massachusetts	 
	 	 	 	 	 	 
	 	•

	 	Quota Share Retrocession Agreement (the “US/Bermuda Quota Share
Agreement”) by and between Platinum Bermuda and Platinum US dated as of May
13, 2003, as amended by that certain Addendum dated as of December 31, 2003.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Aggregate Excess of Loss Retrocession Agreement, dated June 11, 2003
(the “Excess of Loss Agreement”), between Platinum US and Mountain Ridge.
	 	 	Vermont	 
	 	 	 	 	 	 
	 	•

	 	Commutation and Release Agreement,
dated June 11, 2003 (“Commutation
	 	 	New York	 
	 	 	 	 	 	 

F-3

 

	 	 	 	 	 	 	 	 
	 	 	 
	 	Filed Agreements to which Platinum Underwriters Reinsurance Inc., a Maryland	 	 	 	 
	 	domiciled insurance company (“Platinum US”), is a party	 	 	Governing Law	 
	 	 	 	 	 	 
	 	

	 	and Release”) between Platinum US and Mountain Ridge.	 	 	 	 
	 	 	 	 	 	 
	 	•

	 	Referral Agreement between Platinum US and Renaissance Underwriting
Managers Ltd.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Novation and Transfer Agreement for the Multi-Line Excess of Loss
Reinsurance Agreement, dated September 16, 2003 (the “Wisconsin Mutual
Multi-Line Novation Agreement”), among Platinum US, Fire & Marine and
Wisconsin Mutual Insurance Company, effective as of January 1, 2003.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Novation and Transfer Agreement for the Casualty Excess of Loss
Reinsurance Agreement, dated September 16, 2003 (the “Casualty Novation
Agreement”), among Platinum US, Fire & Marine and Wisconsin Mutual Insurance
Company, effective as of January 1, 2003.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Novation and Transfer Agreement for the First Property Catastrophe
Excess of Loss Reinsurance Agreement, dated September 16, 2003 (the “First
Property Catastrophe Novation Agreement”), among Platinum US, Fire & Marine
and Wisconsin Mutual Insurance Company, effective as of January 1, 2003.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Novation and Transfer Agreement for the Second Property Catastrophe
Excess of Loss Reinsurance Agreement, dated September 16, 2003 (the “Second
Property Catastrophe Novation Agreement”), among Platinum US, Fire & Marine
and Wisconsin Mutual Insurance Company, effective as of January 1, 2003.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Novation and Transfer Agreement for the Third Property Catastrophe
Excess of Loss Reinsurance Agreement, dated September 16, 2003 (the “Third
Property Catastrophe Novation Agreement”), among Platinum US, Fire & Marine
and Wisconsin Mutual Insurance Company, effective as of January 1, 2003.
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Novation and Transfer Agreement for the Casualty Clash Excess of Loss
reinsurance contract among Platinum US, Fire & Marine and Crusader Insurance
Company, effective as of January 1, 2003 (the “Casualty Clash Novation
Agreement”).
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Novation and Transfer Agreement for the Property Clash Excess of Loss
reinsurance contract among Platinum US, Fire & Marine and Crusader Insurance
Company, effective as of January 1, 2003 (the “Property Clash Novation
Agreement”).
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Novation and Transfer Agreement for the Multi Line Excess of Loss
reinsurance contract among Platinum US, St. Paul Fire & Marine Insurance
Company and Crusader Insurance Company, effective as of January 1, 2003 (the
“Crusader Multi-Line Novation Agreement”).
	 	 	New York	 
	 	 	 	 	 	 
	 	•

	 	Indexed Warranty Excess of Loss Reinsurance Contract, effective June
11, 2003, between Renaissance Reinsurance Ltd. And Platinum US.
	 	 	Bermuda	 
	 	 	 	 	 	 
	 	•

	 	Combined Catastrophe Excess of Loss Reinsurance Contract effective
January 1, 2003 for the Alfa Insurance Group.	 	 	 	 
	 	 	 	 	 	 
	 	•

	 	Addendum No. 6 to the Interests and Liabilities Agreement with respect
to the Combined Catastrophe Excess of Loss Reinsurance Contract between
members of the Alfa Insurance Group, Fire & Marine and Platinum US (the “Alfa
Addendum”).	 	 	 	 
	 	 	 	 	 	 

F-4

 

	 	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 
	Filed
Agreements to which Platinum Underwriters Reinsurance Inc., a
Maryland 

domiciled insurance company (“Platinum US”), is a party 	 	 	Governing Law	 	 	 
	 	 	 	 	 	 
	 	•

	 	US Guaranty
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Excess of Loss Retrocession Agreement dated as of April 15, 2004
between Platinum UK and Platinum US (the “Excess of Loss Retrocession
Agreement”).
	 	 	England	 	 	 
	 	 	 	 	 	 
	 	•

	 	Novation and Transfer Agreement for the Property Catastrophe Excess of
Loss Reinsurance Agreement, dated February 19, 2004, among Platinum US, Fire &
Marine and Germantown Mutual Insurance Company, effective as of January 1,
2003 (the “Property Catastrophe Novation Agreement”).
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Novation and Transfer Agreement for the Workers’ Compensation and
Employer’s Liability Excess of Loss Reinsurance Agreement, dated February 19,
2004, among Platinum US, Fire & Marine and Germantown Mutual Insurance
Company, effective as of January 1, 2003 (the “Workers’Compensation Excess of
Loss Novation Agreement”).
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Novation and Transfer Agreement for the Property Per Risk Excess of
Loss Reinsurance Agreement, dated February 19, 2004, among Platinum US, Fire &
Marine and Germantown Mutual Insurance Company, effective as of January 1,
2003 (the “Property Per Risk Novation Agreement”).
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Novation and Transfer Agreement for the Casualty Excess of Loss
Reinsurance Agreement, dated February 19, 2004, among Platinum US, Fire &
Marine and Germantown Mutual Insurance Company, effective as of January 1,
2003 (the “Germantown Casualty Novation Agreement”).
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Property Catastrophe Excess of Loss Reinsurance Contract dated
September 10, 2003 between the Glencoe Group of Companies and Platinum US (15%
participation)
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Property Catastrophe Excess of Loss Reinsurance Contract dated
September 10, 2003 between the Glencoe Group of Companies and Platinum US (5%
participation).
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Employment Agreement dated August 4, 2004 between Michael D. Price and
Platinum US.
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Letter Agreement dated June 24, 2004 between H. Elizabeth Mitchell and
Platinum US.
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Investment Management Agreement dated May 12, 2005 between Platinum US
and Hyperion Capital Management, Inc. (“Hyperion”).
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	BlackRock Investment Manager Agreement II.
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Excess of Loss Retrocession Agreement (the “2005 Excess of Loss
Agreement”), between Platinum UK and Platinum US, effective as of April 1,
2005.
	 	 	England	 	 	 
	 	 	 	 	 	 
	 	•

	 	Addendum No. 2 to the Quota Share Retrocession Agreement dated as of
January 1, 2004 between Platinum Bermuda and Platinum US, effective as of
April 1, 2005 (“US/Bermuda Quota Share Agreement Addendum No. 2”).	 	 	 	 	 	 
	 	 	 	 	 	 
	 
	 	 	 	 	 	 
	Filed Agreements to which Platinum Re (UK) Limited, a limited liability company
incorporated under the laws of England (“Platinum
UK”), is a party	 	 	Governing Law	 	 	 
	 	 	 	 	 	 
	 	•

	 	U.K. Master Services Agreement, dated November 1, 2002 (the “UK Master
Services Agreement”), as amended by that certain Addendum dated December 10,
2003, between St. Paul Re UK and Platinum UK.
	 	 	England	 	 	 
	 	 	 	 	 	 
	 	•

	 	U.K. Run-off Services Agreement, dated November 1, 2002 (the “UK
Run-
	 	 	England	 	 	 
	 	 	 	 	 	 

F-5

 

	 	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 
	Filed Agreements to which Platinum Re (UK) Limited, a limited liability company
incorporated under the laws of England (“Platinum
UK”), is a party	 	 	Governing Law	 	 	 
	 	 	 	 	 	 
	 	

	 	Off Services Agreement”), between St. Paul Re UK and Platinum UK.	 	 	 	 	 	 
	 	 	 	 	 	 
	 	•

	 	U.K. Underwriting Agency and Underwriting Management Agreement, dated
November 1, 2002 (the “UK Underwriting Agreement”), between Platinum UK and
St. Paul Re UK.
	 	 	England	 	 	 
	 	 	 	 	 	 
	 	•

	 	U.K. Business Transfer Agreement, dated November 1, 2002 (the “UK
Business Transfer Agreement”), between Platinum UK, St. Paul Re UK and St.
Paul Management Limited.
	 	 	England	 	 	 
	 	 	 	 	 	 
	 	•

	 	Quota Share Retrocession Agreement dated November 26, 2002 (the
“UK/Bermuda Quota Share Agreement”), between Platinum Bermuda and Platinum UK.
	 	 	Massachusetts	 	 	 
	 	 	 	 	 	 
	 	•

	 	Security Agreement dated as of November 26, 2002 (the “Security
Agreement”), between Platinum Bermuda and Platinum UK.
	 	 	Massachusetts	 	 	 
	 	 	 	 	 	 
	 	•

	 	Control Agreement dated as of November 26, 2002 (the “Control
Agreement”), by and among Platinum Bermuda, Platinum UK and State Street Bank
and Trust Company.
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Alliance Capital Management L.P. Discretionary Investment Advisory
Agreement dated as of November 26, 2002 (the “Investment Advisory Agreement”),
with Platinum Bermuda and Platinum UK.
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	UK Guarantee
	 	 	England and Wales	 	 	 
	 	 	 	 	 	 
	 	•

	 	Excess of Loss Retrocession Agreement
	 	 	England	 	 	 
	 	 	 	 	 	 
	 	•

	 	Addendum No. 1 effective January 1, 2004, to the Security Agreement
dated as of November 26, 2002, between Platinum Bermuda and Platinum UK (the
“Security Agreement Addendum”).
	 	 	Massachusetts	 	 	 
	 	 	 	 	 	 
	 	•

	 	Quota Share Retrocession Agreement dated as of March 27,2003 between
Platinum UK and Platinum Bermuda (the “UK/Bermuda Quota Share Agreement II”).
	 	 	England	 	 	 
	 	 	 	 	 	 
	 	•

	 	Addendum No. 1 effective April 1, 2003, to the Quota Share
Retrocession Agreement dated as of March 27, 2003, between Platinum UK and
Platinum Bermuda (the “Quota Share Agreement Addendum No. 1”)
	 	 	England	 	 	 
	 	 	 	 	 	 
	 	•

	 	Addendum No. 2 effective March 27, 2003, to the Quota Share
Retrocession Agreement dated as of March 27, 2003, between Platinum UK and
Platinum Bermuda (the “Quota Share Agreement Addendum No. 2”)
	 	 	England	 	 	 
	 	 	 	 	 	 
	 	•

	 	Investment Manager Agreement dated May 12, 2005 between Platinum UK
and BlackRock.
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	2005 Excess of Loss Agreement
	 	 	England	 	 	 
	 	 	 	 	 	 
	 
	 	 	 	 	 	 
	Filed Agreements to which Platinum Underwriters Bermuda, Ltd., a Bermuda company
(“Platinum Bermuda”), is a party	 	 	Governing Law	 	 	 
	 	 	 	 	 	 
	 	•

	 	Bermuda Trust Agreement
	 	 	Massachusetts	 	 	 
	 	 	 	 	 	 
	 	•

	 	US/Bermuda Quota Share Agreement
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	UK/Bermuda Quota Share Agreement
	 	 	Massachusetts	 	 	 
	 	 	 	 	 	 
	 	•

	 	Security Agreement
	 	 	Massachusetts	 	 	 
	 	 	 	 	 	 
	 	•

	 	Control Agreement
	 	 	Massachusetts	 	 	 
	 	 	 	 	 	 
	 	•

	 	Investment Advisory Agreement
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Referral Agreement between Platinum Bermuda and Renaissance
Underwriting Managers Ltd.
	 	 	Bermuda	 	 	 
	 	 	 	 	 	 

F-6

 

	 	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 
	Filed Agreements to which Platinum Underwriters Bermuda, Ltd., a Bermuda company
(“Platinum Bermuda”), is a party	 	 	Governing Law	 	 	 
	 	 	 	 	 	 
	 	•

	 	Security Agreement Addendum
	 	 	Massachusetts	 	 	 
	 	 	 	 	 	 
	 	•

	 	UK/Bermuda Quota Share Agreement II
	 	 	England	 	 	 
	 	 	 	 	 	 
	 	•

	 	Quota Share Agreement Addendum No. 1
	 	 	England	 	 	 
	 	 	 	 	 	 
	 	•

	 	Quota Share Agreement Addendum No. 2
	 	 	England	 	 	 
	 	 	 	 	 	 
	 	•

	 	Investment Management Agreement dated May 12, 2005 between Platinum
Bermuda and Hyperion.
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	BlackRock Investment Manager Agreement I.
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	US/Bermuda Quota Share Agreement Addendum No. 2	 	 	 	 	 	 
	 	 	 	 	 	 
	 
	 	 	 	 	 	 
	Filed Agreements to which Platinum Regency Holdings, an Irish company (“Platinum
Ireland”), is a party	 	 	Governing Law	 	 	 
	 	 	 	 	 	 
	 	•

	 	BlackRock Investment Manager Agreement I.
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 
	 	 	 	 	 	 
	Filed Agreements to which RenaissanceRe Holdings, Ltd., a Bermuda company
(“RenRe”), is a party	 	 	Governing Law	 	 	 
	 	 	 	 	 	 
	 	•

	 	RenRe Investment Agreement
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Transfer Restrictions and Registration Rights Agreement
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	RenRe Option Agreement
	 	 	New York	 	 	 
	 	 	 	 	 	 
	 	•

	 	Services and Capacity Reservation Agreement
	 	 	New York	 	 	 
	 	 	 	 	 	 

F-7EXHIBIT 10.2

 

Exhibit 10.2

Platinum Underwriters Holdings, Ltd.

Platinum Underwriters Finance, Inc.

Series A 7.50% Notes due June 1, 2017

Jurisdiction Agreement

May 20, 2005

Goldman, Sachs & Co.

85 Broad Street

New York, New York 10004

Ladies and Gentlemen:

     Reference is hereby made to that certain Purchase Agreement, dated as of the date hereof
(the “Purchase Agreement”), among Platinum Underwriters Holdings, Ltd., a Bermuda company (the
“Company”), Platinum Underwriters Finance, Inc., a Delaware corporation (“Platinum Finance”), and
Goldman, Sachs & Co., (the “Purchaser”) and the Exchange and Registration Rights Agreement to be
dated as of May 26, 2005 (the “2005 Registration Rights Agreement”), among the Company, Platinum
Finance and the Purchaser. All capitalized terms used but not defined herein shall have the
meanings ascribed to such terms in the Purchase Agreement.

     Each of the Company and Platinum Finance irrevocably (i) agrees that any legal suit, action or
proceeding against the Company or Platinum Finance brought by the Purchaser or by any person who
controls such Purchaser within the meaning of either Section 15 of the Act or Section 20 of the
Exchange Act (a “Control Person”) arising out of or based on the Purchase Agreement, the 2005
Registration Rights Agreement or the transactions contemplated thereby may be instituted in any
United States Federal or State court in the Borough of Manhattan, the City of New York, the State
of New York (a “New York Court”), (ii) waives, to the fullest extent it may effectively do so, any
objection which it may now or hereafter have to the laying of venue of any such proceeding, (iii)
waives, to the fullest extent it may effectively do so, any objection based on the absence of a
necessary or indispensable party in any such proceeding, and (iv) submits to the non-exclusive
jurisdiction of such courts in any such suit, action or proceeding. Each of the Company and
Platinum Finance irrevocably waives any immunity to jurisdiction to which it may otherwise be
entitled or become entitled (including sovereign immunity, immunity to pre-judgment attachment,
post-judgment attachment and execution) in any legal suit, action or proceeding against it arising
out of or based on the Purchase Agreement, the 2005 Registration Rights Agreement or the
transactions contemplated thereby which is instituted in any New York Court. To the fullest extent
permitted by law, each of the Company and Platinum Finance hereby waives any objection to the
enforcement by any competent foreign court of any judgment validly obtained in any such proceeding.
Each of the Company and Platinum Finance designates and appoints CT Corporation System in New York
City as its authorized agent (the “Authorized Agent”) upon which process may be served in any such
action arising out of or

 

 

based on the Purchase Agreement, the 2005 Registration Rights Agreement or
the transactions contemplated thereby which may be instituted in any New York Court by the
Purchaser or by any Control Person, expressly consents to the jurisdiction of any such court in
respect of any such action, and waives any other requirements of or objections to personal
jurisdiction with respect thereto. Such appointment shall be irrevocable on the part of each of
the Company and Platinum Finance. Neither the Company nor Platinum Finance makes any
representation as to the revocability of such appointment by the Authorized Agent. Each of the
Company and Platinum Finance represents and warrants that its Authorized Agent has agreed to act as
such agent for service of process and each of the Company and Platinum Finance agrees to take any
and all action, including the filing of any and all documents and instruments, that may be
necessary to continue such appointment in full force and effect as aforesaid. Service of process
upon the Authorized Agent and written notice of such service of process to the Company or Platinum
Finance, as the case may be, shall be deemed, in every respect, effective service of process upon
the Company or Platinum Finance, as applicable.

     This Agreement shall be binding upon, and inure solely to the benefit of, the Purchaser, the
Company and Platinum Finance, and no other person shall acquire or have any right under or by
virtue of this Agreement. No purchaser of any of the Securities from the Purchaser shall be deemed
a successor or assign by reason merely of such purchase.

     This Agreement shall be governed by and construed in accordance with the laws of the State of
New York, without regard to the conflicts of laws rules of such state.

     The provisions of this Agreement shall survive any termination of the Purchase Agreement or
the 2005 Registration Rights Agreement, in whole or in part.

     This Agreement may be executed by any one or more of the parties hereto in any number of
counterparts, each of which shall be deemed to be an original, but all such counterparts shall
together constitute one and the same instrument.

[SIGNATURE PAGE FOLLOWS]

2

 

     If the foregoing is in accordance with your understanding, please sign and return to us eight
counterparts hereof, and upon the acceptance hereof by you, this letter and such acceptance hereof
shall constitute a binding agreement among the Purchaser, the Company and Platinum Finance.

	 	 	 	 	 
	 	Very truly yours, 

Platinum Underwriters Holdings, Ltd.

 	 
	 	By:  	/s/
Gregory E.A. Morrison	 
	 	 	Name:  	Gregory E.A. Morrison	 
	 	 	Title:  	President and Chief Executive Officer	 
	 

	 	 	 	 	 
	 	Platinum Underwriters Finance, Inc.

 	 
	 	By:  	/s/
Gregory E.A. Morrison	 
	 	 	Name:  	Gregory E.A. Morrison	 
	 	 	Title:  	President and Chief Executive Officer	 
	 

Accepted as of the date hereof:

Goldman, Sachs & Co.

	 	 	 	 	 
	By:
	 	/s/
Goldman, Sachs & Co.	 	 
	

	 	(Goldman, Sachs & Co.)
	 	 
	

	 	 	 	 

[Senior Notes Jurisdiction Agreement]

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