Document:

Exhibit
4.01

 

[FACE OF NOTE]

 

Unless this certificate is presented by an authorized
representative of The Depository Trust Company (55 Water Street, New York, New
York) to the issuer or its agent for registration of transfer, exchange or
payment, and any certificate issued is registered in the name of Cede &
Co. or such other name as requested by an authorized representative of The
Depository Trust Company and any payment is made to Cede & Co., ANY
TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON
IS WRONGFUL since the registered owner hereof, Cede & Co., has an
interest herein.

 

	
  REGISTERED 

  

  

  NO. 1

  	
   

  	
  CUSIP: 22541L AU 7

  ISIN: US22541LAU70

  

  PRINCIPAL AMOUNT: $1,000,000

  

 

	
  CREDIT SUISSE
  FIRST BOSTON (USA), INC.

  Reverse Convertible Securities Linked to the Performance of eBay, Inc.

  due March 31, 2006

  

 

CREDIT SUISSE FIRST BOSTON (USA), INC., a Delaware
corporation (the “Company”, which term includes any successor corporation under
the Indenture hereinafter referred to), for value received, hereby promises to
pay to Cede & Co., or registered assigns, at the office or agency of
the Company in New York, New York, the Redemption Amount (as defined on the
reverse hereof) on the Maturity Date (as defined on the reverse hereof), in the
coin or currency of the United States and to pay a coupon of
12.00% per annum on the principal amount from March 31, 2005.  The coupon will represent an interest
component and an option premium.  The
coupon payment will be payable quarterly in arrears on June 30, 2005, September 30,
2005, December 30, 2005 and March 31, 2006.

 

Reference is hereby made to the further provisions of
this Note set forth on the reverse hereof, which further provisions shall for
all purposes have the same effect as if set forth at this place.

 

This Note shall not be valid or become obligatory for
any purpose until the certificate of authentication hereon shall have been
manually signed by the Trustee under the Indenture referred to on the reverse
hereof.

 

F-1

 

IN WITNESS WHEREOF, the Company has caused this Note
to be duly executed under its corporate seal.

 

	
   

  	
  CREDIT SUISSE FIRST BOSTON (USA), INC.

  
	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
  [SEAL]

  	
  By:

  	
  /s/ John A. Ehinger

  	
   

  
	
   

  	
   

  	
  Name: John A. Ehinger

  	
   

  
	
   

  	
   

  	
  Title: Managing Director

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
  /s/ Raymond Disco

  	
   

  
	
   

  	
   

  	
  Name: Raymond Disco

  	
   

  
	
   

  	
   

  	
  Title: Assistant Treasurer

  	
   

  

 

 

CERTIFICATE OF AUTHENTICATION

 

This is one of the Securities of the series designated
therein referred to in the within-mentioned Indenture.

 

Dated:  March 31,
2005

 

	
   

  	
  JPMORGAN CHASE BANK,

  
	
   

  	
  as Trustee

  
	
   

  	
   

  
	
   

  	
  By:

  	
  /s/ Tai B. Lee

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  Authorized Signatory

  

 

F-2

 

[REVERSE OF NOTE]

 

CREDIT SUISSE
FIRST BOSTON (USA), INC.

Reverse Convertible Securities Linked to the Performance of eBay, Inc.

due March 31, 2006

 

This Note is one of a
duly authorized issue of debentures, notes, bonds or other evidences of
indebtedness of the Company (the “Securities”) of the series hereinafter
specified, all issued or to be issued under and pursuant to a senior indenture,
dated as of June 1, 2001 (the “Indenture”), between the Company and
JPMorgan Chase Bank, as trustee (the “Trustee”), to which Indenture and all
indentures supplemental thereto reference is hereby made for a description of
the rights, limitations of rights, obligations, duties and immunities
thereunder of the Trustee, the Company, and the Holders of the Securities.  The Securities may be issued in one or more
series, which different series may be issued in various aggregate principal
amounts, may mature at different times, may bear interest (if any) at different
rates, may be subject to different redemption provisions (if any), may be
subject to different sinking, purchase or analogous funds (if any) and may
otherwise vary as provided in the Indenture. 
This Note is one of a series designated as the Reverse Convertible
Securities Linked to the Performance of eBay, Inc. due March 31, 2006
(the “Note”).

 

A coupon will be payable on this Note of
12.00% per annum on the principal amount from March 31, 2005.  The coupon will represent an interest
component and an option premium.  The
coupon payment will be payable quarterly in arrears on June 30, 2005, September 30,
2005, December 30, 2005 and March 31, 2006.

 

This Note is payable in the manner, with the effect
and subject to the conditions provided in the Indenture.

 

If a payment date is not a Business Day as defined in
the Indenture at a place of payment, payment may be made at that place on the
next succeeding day that is a Business Day, and no interest shall accrue for
the intervening period.

 

The Indenture provides that, without prior notice to
any Holders, the Company and the Trustee may amend the Indenture and the
Securities of any series with the written consent of the Holders of a majority
in principal amount of the outstanding Securities of all series affected by
such amendment (all such series voting as one class), and the Holders of a
majority in principal amount of the outstanding Securities of all series
affected thereby (all such series voting as one class) may waive future
compliance by the Company with any provision of the Indenture or the Securities
of such series by written notice to the Trustee; provided that, without the
consent of each Holder of the Securities of each series affected thereby, an
amendment or waiver, including a waiver of past defaults, may not: (i) extend
the stated maturity of the Principal of, or any sinking fund obligation or any
installment of interest on, such Holder’s Security, or reduce the principal
amount thereof or the rate of interest thereon (including any amount in respect
of original issue discount), or any premium payable with respect thereto, or
adversely affect the rights of such Holder under any mandatory redemption or
repurchase provision or any right of redemption or repurchase at the option of
such Holder, or reduce the amount of the Principal of an Original Issue
Discount Security that would be due and payable

 

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upon an acceleration of the maturity thereof or the amount thereof
provable in bankruptcy, or change any place of payment where, or the currency
in which, any Security of such series or any premium or the interest thereon is
payable, or impair the right to institute suit for the enforcement of any such
payment on or after the due date therefor; (ii) reduce the percentage in
principal amount of outstanding Securities of the relevant series the consent
of whose Holders is required for any such supplemental indenture, for any
waiver of compliance with certain provisions of the Indenture or certain
Defaults and their consequences provided for in the Indenture; (iii) waive
a Default in the payment of Principal of or interest on any Security of such
Holder; or (iv) modify any of the provisions of the Indenture governing
supplemental indentures with the consent of Securityholders except to increase
any such percentage or to provide that certain other provisions of the
Indenture cannot be modified or waived without the consent of the Holder of
each outstanding Security affected thereby.

 

The Indenture provides that, subject to certain
conditions, the Holders of at least a majority in principal amount (or, if any
Securities are Original Issue Discount Securities, such portion of the
Principal as is then accelerable) of the outstanding Securities of all series
affected (voting as a single class), by notice to the Trustee, may waive an
existing Default or Event of Default with respect to the Securities of such
series and its consequences, except a Default in the payment of Principal of or
interest on any Security or in respect of a covenant or provision of the
Indenture which cannot be modified or amended without the consent of the Holder
of each outstanding Security affected. 
Upon any such waiver, such Default shall cease to exist, and any Event
of Default with respect to the Securities of such series arising therefrom
shall be deemed to have been cured, for every purpose of the Indenture; but no
such waiver shall extend to any subsequent or other Default or Event of Default
or impair any right consequent thereto.

 

The Indenture provides that a series of Securities may
include one or more tranches (each a “tranche”) of Securities, including
Securities issued in a Periodic Offering. 
The Securities of different tranches may have one or more different
terms, including authentication dates and public offering prices, but all the
Securities within each such tranche shall have identical terms, including
authentication date and public offering price. 
Notwithstanding any other provision of the Indenture, subject to certain
exceptions, with respect to sections of the Indenture concerning the execution,
authentication and terms of the Securities, redemption of the Securities,
Events of Default of the Securities, defeasance of the Securities and amendment
of the Indenture, if any series of Securities includes more than one tranche,
all provisions of such sections applicable to any series of Securities shall be
deemed equally applicable to each tranche of any series of Securities in the
same manner as though originally designated a series unless otherwise provided
with respect to such series or tranche pursuant to a board resolution or a
supplemental indenture establishing such series or tranche.

 

No reference herein to the Indenture and no provision
of this Note or of the Indenture shall alter or impair the obligation of the
Company, which is absolute and unconditional, to pay the Redemption Amount of
this Note in the manner, at the place, at the time and in the coin or currency
herein prescribed.

 

The Securities are issuable initially only in
registered form without coupons in denominations of $10,000 or any integral
multiple thereof at the office or agency of the

 

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Company in the Borough of Manhattan, The City of New York, and in the
manner and subject to the limitations provided in the Indenture.

 

The Securities will not be redeemable at the option of
the Company prior to maturity.

 

The Company will not be required to pay any Additional
Amounts on the Securities.

 

Maturity Date

 

The Maturity Date of the Securities is March 31, 2006 (the “Maturity
Date”); however, if a Market Disruption Event exists on any valuation date, as
determined by the Calculation Agent, the Maturity Date will be the later of March 31,
2006 and the third Business Day following the date on which the final share
price is calculated.

 

Redemption Amount

 

The Company will redeem the Securities at maturity for
a Redemption Amount that will be based upon the performance of the common stock
of eBay, Inc. (the “reference shares”) during the term of the Securities
(the “Redemption Amount”).  
The Redemption Amount is calculated as follows:

 

(1)    If the
price of the reference shares on the Nasdaq National Market (the “relevant
exchange”) is not less than or equal to the knock-in level, which is 80% of the
Initial Share Price, at all times from but not including March 28, 2005,
which is the initial setting date, to and including March 24, 2006 (the “valuation
date”), the Redemption Amount will equal a cash payment equal to 100% of the
principal amount of the Securities at maturity.

 

(2)    If (i) the
price of the reference shares on the relevant exchange is less than or equal to
the knock-in level at any time from but not including the initial setting date
to and including the valuation date and (ii) the closing price of the
reference shares on that exchange on the valuation date (the “final share price”),
is greater than or equal to the Initial Share Price, the Redemption Amount will
equal a cash payment equal to 100% of the principal amount of the Securities at
maturity.

 

(3)   
Otherwise, Holders will receive the physical delivery amount.  The physical delivery amount will be the
number of reference shares per $1,000 principal amount of the Securities equal
to $1,000 divided by the Initial Share Price.

 

The “Initial Share Price” is equal to $35.91.

 

A “Business Day” is a
day, other than a Saturday, Sunday or a day on which banking institutions in
New York, New York are generally authorized or obligated by law or executive
order to close and that is also a trading day.

 

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A “Market
Disruption Event” is, the occurrence or existence of any suspension of or
limitation imposed on trading (by reason of movements in price exceeding limits
permitted by any relevant exchange or market or otherwise) of, or the
unavailability, through a recognized system of public dissemination of
transaction information, of accurate price, volume or related information in
respect of (a) the reference shares or (b) any options or futures
contracts, or any options on such futures contracts, relating to the reference
shares if, in each case, in the determination of the Calculation Agent, in its
sole discretion, any such suspension, limitation or unavailability is material.

 

A “trading
day” means any day, as determined by the Calculation Agent, on which trading is
generally conducted for reference shares (or, but for the occurrence of a
Market Disruption Event, would have been generally conducted) on the relevant
exchange and on the Chicago Mercantile Exchange and the Chicago Board Options
Exchange (collectively, the “related exchanges”), other than a day on which the
relevant exchange or the related exchanges are scheduled to close prior to
their regular weekday closing time.

 

Market
Disruption Events

 

If no final share price is available on the valuation date
because of a Market Disruption Event, as determined by the Calculation Agent in
its sole discretion, the Calculation Agent may postpone the calculation of the
final share price until the earlier of the date such Market Disruption Event
has ceased or three trading days after the valuation date, as the case may be.  On such third trading day, in the event there
still exists a Market Disruption Event, the Calculation Agent will determine
the final share price using its good faith estimate of the value for the
reference shares as of the closing time on the relevant exchange on such
date.  If a Market Disruption Event
exists on the valuation date, the Maturity Date of the Securities will be the
later of March 31, 2006 and the third Business Day following the day on
which the final share price is calculated. 
No interest will accrue or other payment be payable because of any
postponement of the Maturity Date.

 

For purposes of determining whether a Market Disruption
Event has occurred:  (1) a
limitation on the hours or number of days of trading will not constitute a
Market Disruption Event if it results from an announced change in the regular
business hours of the relevant exchange; (2) a decision permanently to
discontinue trading in the relevant options or futures contract will not
constitute a Market Disruption Event; (3) limitations pursuant to New York
Stock Exchange Rule 80A—Index Arbitrage Trading Restrictions (or any
applicable rule or regulation enacted or promulgated by the New York Stock
Exchange, any other self-regulatory organization or the Securities and Exchange
Commission (the “SEC”) of similar scope as determined by the Calculation Agent)
on trading during significant market fluctuations will constitute a Market
Disruption Event; (4) a suspension of trading in an options contract on
the reference shares by the primary securities market trading in such options,
if available, by reason of (x) a price change exceeding limits set by such
securities exchange or market, (y) an imbalance of orders relating to such
contracts or (z) a disparity in bid and ask quotes relating to such contracts
will constitute a suspension or material limitation of trading in options
contracts related to the reference shares notwithstanding that such suspension
or material limitation is less than two hours; (5) a suspension, absence
or material limitation of trading on the primary securities market on which
options contracts related to the reference shares are traded will not 

 

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include any time when such
securities market is itself closed for trading under ordinary circumstances;
and (6) a “suspension or material limitation” on an exchange or in a
market will include a suspension or material limitation of trading by one class
of investors provided that such suspension continues for more than two hours of
trading or during the last one-half hour period preceding the close of trading
on the relevant exchange or market (but will not include limitations imposed on
certain types of trading under New York Stock Exchange Rule 80A or any
applicable rule or regulation enacted or promulgated by the New York Stock
Exchange, NASDAQ, any other self-regulatory organization or the SEC of a
similar scope or as a replacement for Rule 80A, as determined by the
Calculation Agent) and will not include any time when such exchange or market
is closed for trading as part of such exchange’s or market’s regularly
scheduled business hours.]

 

Antidilution Adjustments

 

General

 

The Calculation Agent will adjust the Initial Share Price
and the physical delivery amount if certain corporate actions and other events
described below (each of which, an “adjustment event”), occur, and the
Calculation Agent determines that such adjustment event has a diluting or
concentrative effect on the theoretical value of the reference shares.  Set forth below are examples of how
adjustment events may lead to adjustments to the Initial Share Price and the
physical delivery amount.

 

Upon the occurrence of an adjustment event that the
Calculation Agent determines has a diluting or concentrative effect on the
theoretical value of the reference shares, for purposes only of determining
whether (i) the price of the reference shares is less than or equal to the
knock-in level and (ii) the final share price is less than or equal to the
Initial Share Price, the Calculation Agent will typically adjust the Initial
Share Price according to the following formula:

 

	
  adjusted initial share price = initial share price X

  	
   

  	
  prior physical delivery amount

  	
   

  
	
   

  	
   

  	
  Adjusted physical delivery amount

  

 

The physical delivery amount will be adjusted by the
Calculation Agent as set forth in the specific examples below.

 

The adjustments described below do not cover all events
that could affect the value of the Securities.

 

Adjustments

 

If an
adjustment event occurs and the Calculation Agent determines that the event has
a diluting or concentrative effect on the theoretical value of the reference
shares, the Calculation Agent will calculate a corresponding adjustment to the
Initial Share Price and the physical delivery amount as the Calculation Agent
determines appropriate to account for that diluting or concentrative
effect.  The Calculation Agent will also
determine the effective date of that adjustment, and the replacement of the
reference shares, if applicable, in the event of consolidation or merger.  Upon making any such adjustment, the
Calculation Agent will give

 

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notice as soon as
practicable to the Trustee, stating the adjustment of the Initial Share Price
and physical delivery amount.

 

If more
than one adjustment event occurs, the Calculation Agent will make an adjustment
for each such adjustment event in the order in which they occur, and on a
cumulative basis.  Accordingly, having
adjusted the Initial Share Price and the physical delivery amount for the first
such adjustment event, the Calculation Agent will adjust the Initial Share
Price and the physical delivery amount for the second adjustment event,
applying the required adjustment to the Initial Share Price and the physical
delivery amount as already adjusted for the first adjustment event, and so on
for each subsequent adjustment event.

 

The
Calculation Agent will not have to adjust the Initial Share Price and the
physical delivery amount for any adjustment event unless the adjustment would result in a change to the
Initial Share Price or the physical delivery amount of at least 0.1% in the
Initial Share Price or the physical delivery amount that would apply without
the adjustment.  The Initial Share Price
and the physical delivery amount resulting from any adjustment would be rounded
up or down, as appropriate, to, in the case of the Initial Share Price, the
nearest cent, and, in the case of the physical delivery amount, the nearest
thousandth, with one-half cent and five ten-thousandths, respectively, being
rounded upwards.

 

If an
adjustment event requiring antidilution adjustment occurs, the Calculation
Agent will make any adjustments with a view to offsetting, to the extent
practical, any change in the Holders’ economic position relative to the
Securities that results solely from that event. 
The Calculation Agent may, in its sole discretion, modify any
antidilution adjustments as necessary to ensure an equitable result.

 

The
Calculation Agent has sole discretion in making all determinations with respect
to antidilution adjustments, including any determination as to whether an
adjustment event requiring an antidilution adjustment has occurred, as to the
nature of the adjustment required and how it will be made.  In the absence of manifest error, those
determinations will be conclusive for all purposes and will be binding on the
Holders and the Company, without any liability on the part of the Calculation
Agent.  Upon your written request, the
Calculation Agent will provide information about any adjustments it makes.

 

Events requiring an antidilution adjustment

 

The
following is a list of adjustment events that may require an antidilution
adjustment:

 

(a)                                  a subdivision, consolidation
or reclassification of the reference shares or a free distribution or dividend
of any reference shares to existing holders of reference shares by way of
bonus, capitalization or similar issue;

 

(b)                                 a dividend or other
distribution to existing holders of reference shares of (i) the reference
shares, (ii) other share capital or securities granting the right to
payment of dividends equally or proportionately with such payments to holders
of the reference shares or (iii) any other type of securities, rights or
warrants in any case for payment (in cash or otherwise) at less than the
prevailing market price as determined by the Calculation Agent;

 

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(c)                                  the declaration by the
issuer of the reference shares of an extraordinary or special dividend or other
distribution whether in cash or reference shares or other assets;

 

(d)                                 a repurchase of its common
stock by the issuer of the reference shares whether out of profits or capital
and whether the consideration for such repurchase is cash, securities or otherwise;

 

(e)                                  a consolidation of the
issuer of the reference shares with another company or merger of the issuer of
the reference shares with another company; and

 

(f)                                    any other similar event that
may have a diluting or concentrative effect on the theoretical value of the
reference shares.

 

Certain
adjustment events are discussed in greater detail below.

 

Stock splits

 

A stock split is an increase in the number of a corporation’s
outstanding shares of stock without any change in its stockholders’
equity.  As a result of a stock split,
each outstanding share will be worth less.

 

If the
reference shares are subject to a stock split, the Calculation Agent will
adjust the physical delivery amount to equal the sum of the prior physical
delivery amount—i.e., the physical delivery amount before that adjustment—and
the product of (i) the number of additional shares issued in the stock
split with respect to each of the reference shares times (ii) the prior
physical delivery amount.

 

Reverse stock splits

 

A reverse
stock split is a decrease in the number of a corporation’s outstanding shares
of stock without any change in its stockholders’ equity.  As a result of a reverse stock split, each
outstanding share will be worth more.

 

If the
reference shares are subject to a reverse stock split, the Calculation Agent
will adjust the physical delivery amount to equal the product of the prior
physical delivery amount and the quotient of (i) the number of reference
shares outstanding immediately after the reverse stock split becomes effective
divided by (ii) the number of reference shares outstanding immediately
before the reverse stock split becomes effective.

 

Stock dividends

 

In a stock
dividend, a corporation issues additional shares of its stock to all holders of
its outstanding stock in proportion to the shares they own.  As a result of a stock dividend, each
outstanding share will be worth less.

 

If the
reference shares are subject to a stock dividend payable in the reference
shares, then the Calculation Agent will adjust the physical delivery amount to
equal the sum of the prior physical delivery amount and the product of (i) the
number of additional shares issued in the

 

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stock dividend with respect
to each of the reference shares times (ii) the prior physical delivery
amount.

 

Other dividends and distributions

 

If the
issuer of the reference shares declares a dividend to be distributed to holders
of record of the reference shares as of a date falling in the period that begins
on the day immediately following the valuation date and ends on the day
immediately prior to the Maturity Date, any such dividend will not be paid to
Holders.

 

The
physical delivery amount will not be adjusted to reflect any dividends or
distributions paid with respect to the reference shares, other than (i) stock
dividends described above; (ii) issuances of transferable rights and
warrants as described in “—Transferable rights and warrants” below; and (iii) extraordinary
dividends as described below.

 

A dividend
or other distribution with respect to the reference shares will be deemed to be
an “extraordinary dividend” if its per share value exceeds that of the
immediately preceding non-extraordinary dividend, if any, for the reference
shares by an amount equal to at least 10.00% of the market price of the
reference shares on the Business Day before the extraordinary dividend
date.  The extraordinary dividend date
for any dividend or other distribution is the first day on which the reference
shares trade without the right to receive that dividend or distribution.  If an extraordinary dividend occurs, the
Calculation Agent will adjust the physical delivery amount to equal the product
of (1) the prior physical delivery amount times (2) a fraction, the
numerator of which is the market price of the reference shares on the Business
Day before the extraordinary dividend date and the denominator of which is the
amount by which that market price exceeds the extraordinary dividend adjustment
amount.  The “extraordinary dividend
adjustment amount” with respect to an extraordinary dividend for the reference
shares equals:  (i) for an
extraordinary dividend that is paid in lieu of a regular quarterly dividend,
the amount of the extraordinary dividend per share of the reference shares
minus the amount per share of the immediately preceding dividend, if any, that
was not an extraordinary dividend for the reference shares, or (ii) for an
extraordinary dividend that is not paid in lieu of a regular quarterly
dividend, the amount per share of the extraordinary dividend.

 

To the
extent an extraordinary dividend is not paid in cash, the value of the non-cash
component will be determined by the Calculation Agent.  A distribution on the reference shares that
is a dividend payable in the reference shares, an issuance of rights or
warrants or a spin-off event and that is also an extraordinary dividend will
result in an adjustment to the physical delivery amount only as described in “Stock
dividends” above, “Transferable rights and warrants” below or “Reorganization
events” below, as the case may be, and not as described here.

 

Transferable rights and warrants

 

If the
issuer of the reference shares issues transferable rights or warrants to all
holders of the reference shares to subscribe for or purchase the reference
shares at an exercise price per share that is less than the market price of the
reference shares on the Business Day before the extraordinary dividend date for
the issuance, then the physical delivery amount will be adjusted

 

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by multiplying the prior
physical delivery amount by the following fraction:  (i) the numerator will be the sum of the
number of reference shares outstanding at the close of business on the day
before that extraordinary dividend date and the total number of additional
reference shares offered for subscription or purchase under those transferable
rights or warrants, and (ii) the denominator will be the sum of the number
of reference shares outstanding at the close of business on the day before that
extraordinary dividend date and the product of (1) the total number of
additional reference shares offered for subscription or purchase under the
transferable rights or warrants times (2) the exercise price of those
transferable rights or warrants divided by the market price on the Business Day
before that extraordinary dividend date.

 

Reorganization events

 

Each of the
following may be a reorganization event: 
(i) the reference shares are reclassified or changed; (ii) the
issuer of the reference shares has been subject to a merger, consolidation or
other combination and either is not the surviving entity or is the surviving
entity but all outstanding reference shares are exchanged for or converted into
other property; (iii) a statutory share exchange involving outstanding
reference shares and the securities of another entity occurs, other than as
part of an event described above; (iv) the issuer of the reference shares
effects a spin-off (i.e., issues to all holders of reference shares common
stock equity securities of another issuer) other than as part of an event
described above; (v) the issuer of the reference shares sells or otherwise
transfers its property and assets as an entirety or substantially as an entirety
to another entity (each of the events in clauses (i) through (v) above,
a “merger event”); (vi) a takeover offer, tender offer, exchange offer,
solicitation, proposal or other event by any entity or person that results in
such entity or person purchasing, or otherwise obtaining or having the right to
obtain, by conversion or other means, not less than a majority of the
outstanding voting reference shares as determined by the Calculation Agent,
based upon the making of filings with governmental or self-regulatory agencies
or such other information as the Calculation Agent deems relevant, which we
refer to as a tender offer; (vii) the exchange on which the reference
shares trade announces that pursuant to the rules of such exchange, the
reference shares cease (or will cease) to be listed, traded or publicly quoted
on it for any reason (other than a merger event or tender offer) and are not
immediately re-listed, re-traded or re-quoted on another major U.S. exchange or
quotation system (a “delisting event”); and (viii) the issuer of the
reference shares is liquidated, dissolved or wound up or is subject to a
proceeding under any applicable bankruptcy, insolvency or other similar law
(each, an “insolvency event”).

 

Adjustments for reorganization events

 

If a merger
event occurs and a holder of the reference shares that makes no election, vote
or decision in connection with such merger event would receive as full or
partial consideration ordinary or common shares of any person (other than the
issuer of the reference shares) that are publicly quoted, traded or listed on
any major U.S. exchange or quotation system (the “new shares”), then the Calculation Agent will adjust the
physical delivery amount so as to consist of the amount and type of property
distributed in the reorganization event in respect of the prior physical
delivery amount.  In this instance, if
more than one type of property is distributed, the physical delivery amount
will be adjusted so as to consist of each type of property distributed, in a
proportionate amount, so that the value of each type of property comprising the
new physical delivery amount as a percentage of the total value of the new
physical delivery amount equals the

 

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value of that type of
property as a percentage of the total value of all of the property distributed
in the reorganization event.

 

If a tender
offer occurs, and the holder of the reference shares can elect to receive new
shares as full or partial consideration in respect of such tender offer, then
the Calculation Agent will adjust the physical delivery amount in accordance
with the preceding paragraph.

 

If a merger
event occurs, and the consideration in respect of such event does not consist
in full or in part of new shares (or in the case of a tender offer, a holder of
the reference shares would not be able to elect to receive in full or in part
any new shares as consideration in respect of such tender offer), then the
Calculation Agent will accelerate the Maturity Date to the day which is four
Business Days after the approval date (as defined below).  The amount payable at maturity will be
determined as described below under “Events of default and acceleration.”  The approval date is the closing date of a
merger event or, in the case of a tender offer, the date on which the person or
entity making the tender offer acquires or acquires the right to obtain the
relevant percentage of reference shares.

 

If a
delisting event or an insolvency event occurs, the Calculation Agent will
accelerate the Maturity Date to the day which is four Business Days after the
announcement date (as defined below).  On
the Maturity Date, the Company will pay to each Holder the physical delivery
amount and for the purposes of such calculation, the final share price will be
deemed to be the closing price of the reference shares on the Business Day
immediately prior to the announcement date. 
The announcement date means, in the case of a delisting event, the day of
the first public announcement by the relevant exchange that the reference
shares will cease to trade or be publicly quoted on such exchange, or, in the
case of an insolvency event, the day of the first public announcement of the
institution of a proceeding or presentation of a petition or passing of a
resolution (or other analogous procedure in any jurisdiction) that leads to an
insolvency event with respect to the issuer of the reference shares.

 

If a merger
event or tender offer occurs, coupon payment amounts will accrue on the
Securities through the approval date and be paid on the accelerated Maturity
Date.  Such coupon payments will be
calculated using a 360-day year comprised of twelve 30-day months.  If a delisting event or an insolvency event
occurs, the Company will pay all remaining scheduled unpaid coupon payments due
to a Holder through the scheduled Maturity Date on the accelerated Maturity
Date.

 

For the
purposes of making an adjustment required by a reorganization event, the
Calculation Agent will determine the value of each type of property distributed
in the distribution, in its sole discretion. 
For any property distributed consisting of new shares, the Calculation
Agent will use the closing price of the new shares on the approval date.  The Calculation Agent may value other types
of property in any manner it determines, in its sole discretion, to be
appropriate.  If a holder of the common
stock of the issuer of the reference shares elects to receive different types
or combinations of types of property in the reorganization event, such property
will consist of the types and amounts of each type distributed to a holder that
makes no election, as determined by the Calculation Agent.

 

R-10

 

If a
reorganization event occurs and the Calculation Agent adjusts the physical
delivery amount to consist of the property distributed in the reorganization
event as described above, the Calculation Agent will make further antidilution
adjustments for later events that affect such property, or any component of
such property, comprising the new physical delivery amount.  The Calculation Agent will do so to the same
extent that it would make adjustments if the common stock of the issuer of the
reference shares was outstanding and was affected by the same kinds of
events.  If a subsequent reorganization
event affects only a particular component of the physical delivery amount, the
required adjustment will be made with respect to that component, as if it alone
were the physical delivery amount.  For
example, if the issuer of the reference shares merges into another company and
each share of its common stock is converted into the right to receive two new
shares of the surviving company and a specified amount of cash, the physical
delivery amount will be adjusted to consist of two new shares and the specified
amount of cash per reference share.  The
Calculation Agent will adjust the common share component of the new physical
delivery amount to reflect any later stock split or other event, including any
later reorganization event, that affects the new shares, to the extent
described in this section entitled “Antidilution adjustments” as if the
new shares were the common stock of the issuer of the reference shares.  In that event, the cash component will not be
adjusted but will continue to be a component of the physical delivery
amount.  Consequently, Holders who
receive reference shares at maturity will be entitled to receive, for each
$1,000 of the outstanding principal amount of the Securities being exchanged, all
components of the physical delivery amount in effect on the exchange date, with
each component having been adjusted on a sequential and cumulative basis for
all relevant events requiring adjustment on or before the exchange date.

 

If a reorganization event occurs, the property distributed
in the event will be substituted for the common stock of the issuer of the
reference shares as described above. 
Consequently, references to the common stock of the issuer of the
reference shares mean any property that is distributed in a reorganization
event and comprises the adjusted physical delivery amount.  Similarly, references to the issuer of the
reference shares mean any successor entity in a reorganization event.

 

Events of Default and Acceleration

 

In case an Event of Default (as defined in the
Indenture) with respect to the Securities shall have occurred and be
continuing, the amount declared due and payable upon any acceleration of the
Securities (in accordance with the acceleration provisions set forth in the
Indenture) will be determined by the Calculation Agent and will equal, for each
Note, the arithmetic average, as determined by the Calculation Agent, of the
fair value of the Securities as determined by at least three but not more than
five broker-dealers (which may include Credit Suisse First Boston LLC or any of
the Company’s other subsidiaries or affiliates) as will make such fair value
determination available to the Calculation Agent.

 

Upon due presentment for registration of transfer of
this Note at the office or agency of the Company in the Borough of Manhattan,
The City of New York, a new Note or Securities of authorized denominations for
an equal aggregate principal amount will be issued to the transferee in
exchange therefor, subject to the limitations provided in the Indenture,
without charge except for any tax or other governmental charge imposed in
connection therewith.

 

R-11

 

The Company, the Trustee and any agent of the Company
or the Trustee may deem and treat the registered Holder hereof as the absolute
owner of this Note (whether or not this Note shall be overdue and
notwithstanding any notation of ownership or other writing hereon) for the
purpose of receiving payment of, or on account of, the Redemption Amount
hereof, and for all other purposes, and neither the Company nor the Trustee nor
any agent of the Company or the Trustee shall be affected by any notice to the
contrary.

 

No recourse under or upon any obligation, covenant or
agreement contained in the Indenture or any indenture supplemental thereto or
in any Note, or because of any indebtedness evidenced thereby, shall be had
against any incorporator as such, or against any past, present or future
stockholder, officer, director or employee, as such, of the Company or of any
successor, either directly or through the Company or any successor, under any rule of
law, statute or constitutional provision or by the enforcement of any
assessment or by any legal or equitable proceeding or otherwise, all such
liability being expressly waived and released by the acceptance hereof and as
part of the consideration for the issue hereof.

 

The calculation agent for the Securities (the “Calculation
Agent”) is Credit Suisse First Boston International.  The calculations and determinations of the
Calculation Agent will be final and binding upon all parties (except in the
case of manifest error).  The Calculation
Agent will have no responsibility for good faith errors or omissions in its
calculations and determinations, whether caused by negligence or otherwise.

 

Terms used herein that are defined in the Indenture
and not otherwise defined herein shall have the respective meanings assigned
thereto in the Indenture.

 

The laws of the State of New York (without regard to
conflicts of laws principles thereof) shall govern this Note.

 

R-12

 

 

	
  FOR VALUE RECEIVED, the
  undersigned hereby sell(s), assign(s) and transfer(s) unto

  
	
   

  
	
  [PLEASE INSERT SOCIAL
  SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE]

  
	
   

  
	
   

  
	
  [PLEASE PRINT OR TYPE
  NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE]

  
	
   

  
	
  the within Note and all
  rights thereunder, hereby irrevocably constituting and appointing

  
	
   

  
	
   

  	
  Attorney to 

  
	
  transfer such Note on
  the books of the Issuer, with full power of substitution in the premises.

  
	
   

  
	
   

  	
   

  	
   

  	
  Signature:

  
	
   

  	
   

  	
   

  	
   

  
	
  Dated:

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
  NOTICE:The signature to
  this assignment must correspond with the name as written upon the face of the
  within Note in every particular without alteration or enlargement or any
  change whatsoever.

  
					

 

R-13Exhibit
4.01

 

[FACE OF NOTE]

 

Unless this certificate is presented by an authorized
representative of The Depository Trust Company (55 Water Street, New York, New
York) to the issuer or its agent for registration of transfer, exchange or
payment, and any certificate issued is registered in the name of Cede & Co.
or such other name as requested by an authorized representative of The
Depository Trust Company and any payment is made to Cede & Co., ANY
TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON
IS WRONGFUL since the registered owner hereof, Cede & Co., has an interest
herein.

 

	
  REGISTERED

  	
   

  	
  CUSIP: 22541L AS 2

  
	
   

  	
   

  	
  ISIN: US22541LAS25

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  PRINCIPAL AMOUNT:
  $1,000,000

  
	
   

  	
   

  	
   

  
	
  NO. 1

  	
   

  	
   

  

 

CREDIT
SUISSE FIRST BOSTON (USA), INC.

Reverse Convertible
Securities Linked to the Performance of Silicon Laboratories, Inc.

due
March 31, 2006

 

CREDIT SUISSE FIRST BOSTON (USA), INC., a Delaware
corporation (the “Company”, which term includes any successor corporation under
the Indenture hereinafter referred to), for value received, hereby promises to
pay to Cede & Co., or registered assigns, at the office or agency of the
Company in New York, New York, the Redemption Amount (as defined on the reverse
hereof) on the Maturity Date (as defined on the reverse hereof), in the coin or
currency of the United States and to pay a coupon of
15.00% per annum on the principal amount from March 31, 2005.  The coupon will represent an interest
component and an option premium.  The
coupon payment will be payable quarterly in arrears on June 30, 2005, September
30, 2005, December 30, 2005 and March 31, 2006.

 

Reference is hereby made to the further provisions of
this Note set forth on the reverse hereof, which further provisions shall for
all purposes have the same effect as if set forth at this place.

 

This Note shall not be valid or become obligatory for
any purpose until the certificate of authentication hereon shall have been
manually signed by the Trustee under the Indenture referred to on the reverse
hereof.

 

F-1

 

IN WITNESS WHEREOF, the Company has caused this Note
to be duly executed under its corporate seal.

 

 

	
   

  	
   

  	
  CREDIT SUISSE FIRST BOSTON (USA), INC.

  
	
   

  	
   

  	
   

  
	
  [SEAL]

  	
   

  	
  By:

  	
  /s/ John A. Ehinger

  	
   

  
	
   

  	
   

  	
   

  	
  Name: John A. Ehinger

  
	
   

  	
   

  	
   

  	
  Title: Managing Director

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  By:

  	
  /s/ Raymond Disco

  	
   

  
	
   

  	
   

  	
   

  	
  Name: Raymond Disco

  
	
   

  	
   

  	
   

  	
  Title: Assistant Treasurer

  

 

 

CERTIFICATE OF AUTHENTICATION

 

This is one of the Securities of the series designated
therein referred to in the within-mentioned Indenture.

 

	
  Dated: March 31, 2005

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  JPMORGAN CHASE BANK,

  
	
   

  	
   

  	
  as Trustee

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  By:

  	
  /s/ Tai B. Lee

  	
   

  
	
   

  	
   

  	
   

  	
  Authorized Signatory

  

 

F-2

 

[REVERSE OF NOTE]

 

CREDIT SUISSE
FIRST BOSTON (USA), INC.

Reverse Convertible Securities Linked to the Performance of Silicon
Laboratories, Inc. 

due
March 31, 2006

 

This Note is one of a
duly authorized issue of debentures, notes, bonds or other evidences of
indebtedness of the Company (the “Securities”) of the series hereinafter
specified, all issued or to be issued under and pursuant to a senior indenture,
dated as of June 1, 2001 (the “Indenture”), between the Company and JPMorgan
Chase Bank, as trustee (the “Trustee”), to which Indenture and all indentures
supplemental thereto reference is hereby made for a description of the rights,
limitations of rights, obligations, duties and immunities thereunder of the
Trustee, the Company, and the Holders of the Securities.  The Securities may be issued in one or more
series, which different series may be issued in various aggregate principal
amounts, may mature at different times, may bear interest (if any) at different
rates, may be subject to different redemption provisions (if any), may be
subject to different sinking, purchase or analogous funds (if any) and may
otherwise vary as provided in the Indenture. 
This Note is one of a series designated as the Reverse Convertible
Securities Linked to the Performance of Silicon Laboratories, Inc. due March
31, 2006 (the “Note”).

 

A coupon will be payable on this Note of
15.00% per annum on the principal amount from March 31, 2005.  The coupon will represent an interest
component and an option premium.  The
coupon payment will be payable quarterly in arrears on June 30, 2005, September
30, 2005, December 30, 2005 and March 31, 2006.

 

This Note is payable in the manner, with the effect
and subject to the conditions provided in the Indenture.  

 

If a payment date is not a Business Day as defined in
the Indenture at a place of payment, payment may be made at that place on the
next succeeding day that is a Business Day, and no interest shall accrue for
the intervening period.

 

The Indenture provides that, without prior notice to
any Holders, the Company and the Trustee may amend the Indenture and the
Securities of any series with the written consent of the Holders of a majority
in principal amount of the outstanding Securities of all series affected by
such amendment (all such series voting as one class), and the Holders of a
majority in principal amount of the outstanding Securities of all series
affected thereby (all such series voting as one class) may waive future
compliance by the Company with any provision of the Indenture or the Securities
of such series by written notice to the Trustee; provided that, without the
consent of each Holder of the Securities of each series affected thereby, an
amendment or waiver, including a waiver of past defaults, may not: (i) extend
the stated maturity of the Principal of, or any sinking fund obligation or any
installment of interest on, such Holder’s Security, or reduce the principal
amount thereof or the rate of interest thereon (including any amount in respect
of original issue discount), or any premium payable with respect thereto, or
adversely affect the rights of such Holder under any mandatory redemption or
repurchase provision or any right of redemption or repurchase at the option of
such Holder, or reduce the amount of the Principal of an Original Issue
Discount Security that would be due and payable

 

R-1

 

upon an acceleration of the maturity thereof or the amount thereof
provable in bankruptcy, or change any place of payment where, or the currency
in which, any Security of such series or any premium or the interest thereon is
payable, or impair the right to institute suit for the enforcement of any such
payment on or after the due date therefor; (ii) reduce the percentage in
principal amount of outstanding Securities of the relevant series the consent
of whose Holders is required for any such supplemental indenture, for any
waiver of compliance with certain provisions of the Indenture or certain
Defaults and their consequences provided for in the Indenture; (iii) waive a
Default in the payment of Principal of or interest on any Security of such
Holder; or (iv) modify any of the provisions of the Indenture governing
supplemental indentures with the consent of Securityholders except to increase
any such percentage or to provide that certain other provisions of the
Indenture cannot be modified or waived without the consent of the Holder of
each outstanding Security affected thereby.

 

The Indenture provides that, subject to certain
conditions, the Holders of at least a majority in principal amount (or, if any
Securities are Original Issue Discount Securities, such portion of the
Principal as is then accelerable) of the outstanding Securities of all series
affected (voting as a single class), by notice to the Trustee, may waive an
existing Default or Event of Default with respect to the Securities of such
series and its consequences, except a Default in the payment of Principal of or
interest on any Security or in respect of a covenant or provision of the
Indenture which cannot be modified or amended without the consent of the Holder
of each outstanding Security affected. 
Upon any such waiver, such Default shall cease to exist, and any Event
of Default with respect to the Securities of such series arising therefrom shall
be deemed to have been cured, for every purpose of the Indenture; but no such
waiver shall extend to any subsequent or other Default or Event of Default or
impair any right consequent thereto.

 

The Indenture provides that a series of Securities may
include one or more tranches (each a “tranche”) of Securities, including
Securities issued in a Periodic Offering. 
The Securities of different tranches may have one or more different
terms, including authentication dates and public offering prices, but all the Securities
within each such tranche shall have identical terms, including authentication
date and public offering price. 
Notwithstanding any other provision of the Indenture, subject to certain
exceptions, with respect to sections of the Indenture concerning the execution,
authentication and terms of the Securities, redemption of the Securities,
Events of Default of the Securities, defeasance of the Securities and amendment
of the Indenture, if any series of Securities includes more than one tranche,
all provisions of such sections applicable to any series of Securities shall be
deemed equally applicable to each tranche of any series of Securities in the
same manner as though originally designated a series unless otherwise provided
with respect to such series or tranche pursuant to a board resolution or a
supplemental indenture establishing such series or tranche.

 

No reference herein to the Indenture and no provision
of this Note or of the Indenture shall alter or impair the obligation of the
Company, which is absolute and unconditional, to pay the Redemption Amount of
this Note in the manner, at the place, at the time and in the coin or currency
herein prescribed.

 

The Securities are issuable initially only in
registered form without coupons in denominations of $10,000 or any integral
multiple thereof at the office or agency of the

 

R-2

 

Company in the Borough of Manhattan, The City of New
York, and in the manner and subject to the limitations provided in the
Indenture.

 

The Securities will not be redeemable at the option of
the Company prior to maturity.

 

The Company will not be required to pay any Additional
Amounts on the Securities.

 

Maturity Date

 

The Maturity Date of the Securities is March 31, 2006 (the “Maturity Date”);
however, if a Market Disruption Event exists on any valuation date, as
determined by the Calculation Agent, the Maturity Date will be the later of
March 31, 2006 and the third Business Day following the date on which the final
share price is calculated.  

 

Redemption Amount

 

The Company will redeem the Securities at maturity for
a Redemption Amount that will be based upon the performance of the common stock
of Silicon Laboratories, Inc. (the “reference shares”) during the term of the
Securities (the “Redemption Amount”).   The Redemption Amount is calculated as
follows:

 

(1)    If the price
of the reference shares on the Nasdaq National Market (the “relevant exchange”)
is not less than or equal to the knock-in level, which is 80% of the Initial
Share Price, at all times from but not including March 28, 2005, which is the
initial setting date, to and including March 24, 2006 (the “valuation date”),
the Redemption Amount will equal a cash payment equal to 100% of the principal
amount of the Securities at maturity. 

 

(2)    If (i) the
price of the reference shares on the relevant exchange is less than or equal to
the knock-in level at any time from but not including the initial setting date
to and including the valuation date and (ii) the closing price of the reference
shares on that exchange on the valuation date (the “final share price”), is
greater than or equal to the Initial Share Price, the Redemption Amount will
equal a cash payment equal to 100% of the principal amount of the Securities at
maturity. 

 

(3)    Otherwise,
Holders will receive the physical delivery amount.  The physical delivery amount will be the
number of reference shares per $1,000 principal amount of the Securities equal
to $1,000 divided by the Initial Share Price. 

 

The “Initial Share Price” is equal to $30.00.   

 

A “Business Day” is a
day, other than a Saturday, Sunday or a day on which banking institutions in
New York, New York are generally authorized or obligated by law or executive
order to close and that is also a trading day. 

 

R-3

 

A “Market
Disruption Event” is, the occurrence or existence of any suspension of or
limitation imposed on trading (by reason of movements in price exceeding limits
permitted by any relevant exchange or market or otherwise) of, or the
unavailability, through a recognized system of public dissemination of
transaction information, of accurate price, volume or related information in
respect of (a) the reference shares or (b) any options or futures contracts, or
any options on such futures contracts, relating to the reference shares if, in
each case, in the determination of the Calculation Agent, in its sole
discretion, any such suspension, limitation or unavailability is material.  

 

A “trading
day” means any day, as determined by the Calculation Agent, on which trading is
generally conducted for reference shares (or, but for the occurrence of a
Market Disruption Event, would have been generally conducted) on the relevant
exchange and on the Chicago Mercantile Exchange and the Chicago Board Options
Exchange (collectively, the “related exchanges”), other than a day on which the
relevant exchange or the related exchanges are scheduled to close prior to
their regular weekday closing time.  

 

Market
Disruption Events

 

If no final share price is available on the valuation date
because of a Market Disruption Event, as determined by the Calculation Agent in
its sole discretion, the Calculation Agent may postpone the calculation of the
final share price until the earlier of the date such Market Disruption Event
has ceased or three trading days after the valuation date, as the case may
be.  On such third trading day, in the
event there still exists a Market Disruption Event, the Calculation Agent will
determine the final share price using its good faith estimate of the value for
the reference shares as of the closing time on the relevant exchange on such
date.  If a Market Disruption Event
exists on the valuation date, the Maturity Date of the Securities will be the
later of March 31, 2006 and the third Business Day following the day on which
the final share price is calculated.  No
interest will accrue or other payment be payable because of any postponement of
the Maturity Date.

 

For purposes of determining whether a Market Disruption
Event has occurred:  (1) a limitation on
the hours or number of days of trading will not constitute a Market Disruption
Event if it results from an announced change in the regular business hours of
the relevant exchange; (2) a decision permanently to discontinue trading in the
relevant options or futures contract will not constitute a Market Disruption
Event; (3) limitations pursuant to New York Stock Exchange Rule 80A—Index
Arbitrage Trading Restrictions (or any applicable rule or regulation enacted or
promulgated by the New York Stock Exchange, any other self-regulatory
organization or the Securities and Exchange Commission (the “SEC”) of similar
scope as determined by the Calculation Agent) on trading during significant
market fluctuations will constitute a Market Disruption Event; (4) a suspension
of trading in an options contract on the reference shares by the primary
securities market trading in such options, if available, by reason of (x) a
price change exceeding limits set by such securities exchange or market, (y) an
imbalance of orders relating to such contracts or (z) a disparity in bid and
ask quotes relating to such contracts will constitute a suspension or material
limitation of trading in options contracts related to the reference shares
notwithstanding that such suspension or material limitation is less than two
hours; (5) a suspension, absence or material limitation of trading on the
primary securities market on which options contracts related to the reference
shares are traded will not

 

R-4

 

include any time when such
securities market is itself closed for trading under ordinary circumstances;
and (6) a “suspension or material limitation” on an exchange or in a market
will include a suspension or material limitation of trading by one class of
investors provided that such suspension continues for more than two hours of
trading or during the last one-half hour period preceding the close of trading
on the relevant exchange or market (but will not include limitations imposed on
certain types of trading under New York Stock Exchange Rule 80A or any
applicable rule or regulation enacted or promulgated by the New York Stock
Exchange, NASDAQ, any other self-regulatory organization or the SEC of a
similar scope or as a replacement for Rule 80A, as determined by the
Calculation Agent) and will not include any time when such exchange or market
is closed for trading as part of such exchange’s or market’s regularly
scheduled business hours.]

 

Antidilution Adjustments 

 

General  

 

The Calculation Agent will adjust the Initial Share Price
and the physical delivery amount if certain corporate actions and other events
described below (each of which, an “adjustment event”), occur, and the
Calculation Agent determines that such adjustment event has a diluting or
concentrative effect on the theoretical value of the reference shares.  Set forth below are examples of how
adjustment events may lead to adjustments to the Initial Share Price and the
physical delivery amount.

 

Upon the occurrence of an adjustment event that the
Calculation Agent determines has a diluting or concentrative effect on the
theoretical value of the reference shares, for purposes only of determining
whether (i) the price of the reference shares is less than or equal to the
knock-in level and (ii) the final share price is less than or equal to the
Initial Share Price, the Calculation Agent will typically adjust the Initial
Share Price according to the following formula: 

 

	
   

  	
  adjusted initial share price = initial share price X

  	
  prior physical delivery amount

  	
   

  
	
   

  	
  adjusted physical delivery amount

  

 

The physical delivery amount will be adjusted by the
Calculation Agent as set forth in the specific examples below.  

 

The adjustments described below do not cover all events
that could affect the value of the Securities. 

 

Adjustments  

 

If an
adjustment event occurs and the Calculation Agent determines that the event has
a diluting or concentrative effect on the theoretical value of the reference
shares, the Calculation Agent will calculate a corresponding adjustment to the
Initial Share Price and the physical delivery amount as the Calculation Agent
determines appropriate to account for that diluting or concentrative
effect.  The Calculation Agent will also
determine the effective date of that adjustment, and the replacement of the
reference shares, if applicable, in the event of consolidation or merger.  Upon making any such adjustment, the
Calculation Agent will give

 

R-5

 

notice as soon as practicable to
the Trustee, stating the adjustment of the Initial Share Price and physical
delivery amount.

 

If more
than one adjustment event occurs, the Calculation Agent will make an adjustment
for each such adjustment event in the order in which they occur, and on a
cumulative basis.  Accordingly, having
adjusted the Initial Share Price and the physical delivery amount for the first
such adjustment event, the Calculation Agent will adjust the Initial Share
Price and the physical delivery amount for the second adjustment event,
applying the required adjustment to the Initial Share Price and the physical
delivery amount as already adjusted for the first adjustment event, and so on
for each subsequent adjustment event.  

 

The
Calculation Agent will not have to adjust the Initial Share Price and the
physical delivery amount for any adjustment event unless the adjustment would result in a change to the
Initial Share Price or the physical delivery amount of at least 0.1% in the
Initial Share Price or the physical delivery amount that would apply without
the adjustment.  The Initial Share Price
and the physical delivery amount resulting from any adjustment would be rounded
up or down, as appropriate, to, in the case of the Initial Share Price, the
nearest cent, and, in the case of the physical delivery amount, the nearest
thousandth, with one-half cent and five ten-thousandths, respectively, being
rounded upwards.  

 

If an
adjustment event requiring antidilution adjustment occurs, the Calculation
Agent will make any adjustments with a view to offsetting, to the extent
practical, any change in the Holders’ economic position relative to the
Securities that results solely from that event. 
The Calculation Agent may, in its sole discretion, modify any
antidilution adjustments as necessary to ensure an equitable result.

 

The
Calculation Agent has sole discretion in making all determinations with respect
to antidilution adjustments, including any determination as to whether an
adjustment event requiring an antidilution adjustment has occurred, as to the
nature of the adjustment required and how it will be made.  In the absence of manifest error, those
determinations will be conclusive for all purposes and will be binding on the
Holders and the Company, without any liability on the part of the Calculation
Agent.  Upon your written request, the
Calculation Agent will provide information about any adjustments it makes.  

 

Events requiring an antidilution adjustment

 

The
following is a list of adjustment events that may require an antidilution
adjustment:

 

(a)                                  a subdivision, consolidation
or reclassification of the reference shares or a free distribution or dividend
of any reference shares to existing holders of reference shares by way of
bonus, capitalization or similar issue;

 

(b)                                 a dividend or other
distribution to existing holders of reference shares of (i) the reference
shares, (ii) other share capital or securities granting the right to payment of
dividends equally or proportionately with such payments to holders of the
reference shares or (iii) any other type of securities, rights or warrants in
any case for payment (in cash or otherwise) at less than the prevailing market
price as determined by the Calculation Agent;

 

R-6

 

(c)                                  the declaration by the issuer
of the reference shares of an extraordinary or special dividend or other
distribution whether in cash or reference shares or other assets;

 

(d)                                 a repurchase of its common
stock by the issuer of the reference shares whether out of profits or capital
and whether the consideration for such repurchase is cash, securities or
otherwise;

 

(e)                                  a consolidation of the issuer
of the reference shares with another company or merger of the issuer of the
reference shares with another company; and

 

(f)                                    any other similar event that
may have a diluting or concentrative effect on the theoretical value of the
reference shares.

 

Certain
adjustment events are discussed in greater detail below.

 

Stock splits

 

A stock split is an increase in the number of a corporation’s
outstanding shares of stock without any change in its stockholders’
equity.  As a result of a stock split,
each outstanding share will be worth less.

 

If the
reference shares are subject to a stock split, the Calculation Agent will
adjust the physical delivery amount to equal the sum of the prior physical
delivery amount—i.e., the physical delivery amount before that adjustment—and
the product of (i) the number of additional shares issued in the stock split
with respect to each of the reference shares times (ii) the prior physical
delivery amount.

 

Reverse stock splits

 

A reverse
stock split is a decrease in the number of a corporation’s outstanding shares
of stock without any change in its stockholders’ equity.  As a result of a reverse stock split, each
outstanding share will be worth more.

 

If the
reference shares are subject to a reverse stock split, the Calculation Agent
will adjust the physical delivery amount to equal the product of the prior
physical delivery amount and the quotient of (i) the number of reference shares
outstanding immediately after the reverse stock split becomes effective divided
by (ii) the number of reference shares outstanding immediately before the
reverse stock split becomes effective. 

 

Stock dividends

 

In a stock
dividend, a corporation issues additional shares of its stock to all holders of
its outstanding stock in proportion to the shares they own.  As a result of a stock dividend, each
outstanding share will be worth less.

 

If the reference
shares are subject to a stock dividend payable in the reference shares, then
the Calculation Agent will adjust the physical delivery amount to equal the sum
of the prior physical delivery amount and the product of (i) the number of additional
shares issued in the

 

R-7

 

stock dividend with respect to
each of the reference shares times (ii) the prior physical delivery amount.

 

Other dividends and distributions

 

If the
issuer of the reference shares declares a dividend to be distributed to holders
of record of the reference shares as of a date falling in the period that
begins on the day immediately following the valuation date and ends on the day
immediately prior to the Maturity Date, any such dividend will not be paid to
Holders.  

 

The
physical delivery amount will not be adjusted to reflect any dividends or
distributions paid with respect to the reference shares, other than (i) stock
dividends described above; (ii) issuances of transferable rights and warrants
as described in “—Transferable rights and warrants” below; and (iii)
extraordinary dividends as described below.

 

A dividend
or other distribution with respect to the reference shares will be deemed to be
an “extraordinary dividend” if its per share value exceeds that of the
immediately preceding non-extraordinary dividend, if any, for the reference
shares by an amount equal to at least 10.00% of the market price of the
reference shares on the Business Day before the extraordinary dividend date.  The extraordinary dividend date for any
dividend or other distribution is the first day on which the reference shares
trade without the right to receive that dividend or distribution.  If an extraordinary dividend occurs, the
Calculation Agent will adjust the physical delivery amount to equal the product
of (1) the prior physical delivery amount times (2) a fraction, the numerator
of which is the market price of the reference shares on the Business Day before
the extraordinary dividend date and the denominator of which is the amount by
which that market price exceeds the extraordinary dividend adjustment
amount.  The “extraordinary dividend
adjustment amount” with respect to an extraordinary dividend for the reference
shares equals:  (i) for an extraordinary
dividend that is paid in lieu of a regular quarterly dividend, the amount of
the extraordinary dividend per share of the reference shares minus the amount
per share of the immediately preceding dividend, if any, that was not an
extraordinary dividend for the reference shares, or (ii) for an extraordinary
dividend that is not paid in lieu of a regular quarterly dividend, the amount
per share of the extraordinary dividend.

 

To the
extent an extraordinary dividend is not paid in cash, the value of the non-cash
component will be determined by the Calculation Agent.  A distribution on the reference shares that
is a dividend payable in the reference shares, an issuance of rights or
warrants or a spin-off event and that is also an extraordinary dividend will
result in an adjustment to the physical delivery amount only as described in “Stock
dividends” above, “Transferable rights and warrants” below or “Reorganization
events” below, as the case may be, and not as described here.  

 

Transferable rights and warrants

 

If the
issuer of the reference shares issues transferable rights or warrants to all
holders of the reference shares to subscribe for or purchase the reference
shares at an exercise price per share that is less than the market price of the
reference shares on the Business Day before the extraordinary dividend date for
the issuance, then the physical delivery amount will be adjusted

 

R-8

 

by multiplying the prior
physical delivery amount by the following fraction:  (i) the numerator will be the sum of the
number of reference shares outstanding at the close of business on the day
before that extraordinary dividend date and the total number of additional
reference shares offered for subscription or purchase under those transferable
rights or warrants, and (ii) the denominator will be the sum of the number of
reference shares outstanding at the close of business on the day before that
extraordinary dividend date and the product of (1) the total number of
additional reference shares offered for subscription or purchase under the
transferable rights or warrants times (2) the exercise price of those
transferable rights or warrants divided by the market price on the Business Day
before that extraordinary dividend date.

 

Reorganization events

 

Each of the
following may be a reorganization event: 
(i) the reference shares are reclassified or changed; (ii) the issuer of
the reference shares has been subject to a merger, consolidation or other
combination and either is not the surviving entity or is the surviving entity
but all outstanding reference shares are exchanged for or converted into other
property; (iii) a statutory share exchange involving outstanding reference
shares and the securities of another entity occurs, other than as part of an
event described above; (iv) the issuer of the reference shares effects a
spin-off (i.e., issues to all holders of reference shares common stock equity
securities of another issuer) other than as part of an event described above;
(v) the issuer of the reference shares sells or otherwise transfers its
property and assets as an entirety or substantially as an entirety to another
entity (each of the events in clauses (i) through (v) above, a “merger event”);
(vi) a takeover offer, tender offer, exchange offer, solicitation, proposal or
other event by any entity or person that results in such entity or person
purchasing, or otherwise obtaining or having the right to obtain, by conversion
or other means, not less than a majority of the outstanding voting reference
shares as determined by the Calculation Agent, based upon the making of filings
with governmental or self-regulatory agencies or such other information as the
Calculation Agent deems relevant, which we refer to as a tender offer; (vii)
the exchange on which the reference shares trade announces that pursuant to the
rules of such exchange, the reference shares cease (or will cease) to be
listed, traded or publicly quoted on it for any reason (other than a merger
event or tender offer) and are not immediately re-listed, re-traded or
re-quoted on another major U.S. exchange or quotation system (a “delisting
event”); and (viii) the issuer of the reference shares is liquidated, dissolved
or wound up or is subject to a proceeding under any applicable bankruptcy,
insolvency or other similar law (each, an “insolvency event”).

 

Adjustments for reorganization events

 

If a merger
event occurs and a holder of the reference shares that makes no election, vote
or decision in connection with such merger event would receive as full or
partial consideration ordinary or common shares of any person (other than the
issuer of the reference shares) that are publicly quoted, traded or listed on
any major U.S. exchange or quotation system (the “new shares”), then the Calculation Agent will adjust the
physical delivery amount so as to consist of the amount and type of property
distributed in the reorganization event in respect of the prior physical
delivery amount.  In this instance, if
more than one type of property is distributed, the physical delivery amount
will be adjusted so as to consist of each type of property distributed, in a
proportionate amount, so that the value of each type of property comprising the
new physical delivery amount as a percentage of the total value of the new physical
delivery amount equals the

 

R-9

 

value of that type of property as
a percentage of the total value of all of the property distributed in the
reorganization event.

 

If a tender
offer occurs, and the holder of the reference shares can elect to receive new
shares as full or partial consideration in respect of such tender offer, then
the Calculation Agent will adjust the physical delivery amount in accordance
with the preceding paragraph.

 

If a merger
event occurs, and the consideration in respect of such event does not consist
in full or in part of new shares (or in the case of a tender offer, a holder of
the reference shares would not be able to elect to receive in full or in part
any new shares as consideration in respect of such tender offer), then the
Calculation Agent will accelerate the Maturity Date to the day which is four
Business Days after the approval date (as defined below).  The amount payable at maturity will be determined
as described below under “Events of default and acceleration.”  The approval date is the closing date of a
merger event or, in the case of a tender offer, the date on which the person or
entity making the tender offer acquires or acquires the right to obtain the
relevant percentage of reference shares. 

 

If a
delisting event or an insolvency event occurs, the Calculation Agent will
accelerate the Maturity Date to the day which is four Business Days after the
announcement date (as defined below).  On
the Maturity Date, the Company will pay to each Holder the physical delivery
amount and for the purposes of such calculation, the final share price will be
deemed to be the closing price of the reference shares on the Business Day
immediately prior to the announcement date. 
The announcement date means, in the case of a delisting event, the day
of the first public announcement by the relevant exchange that the reference
shares will cease to trade or be publicly quoted on such exchange, or, in the
case of an insolvency event, the day of the first public announcement of the
institution of a proceeding or presentation of a petition or passing of a
resolution (or other analogous procedure in any jurisdiction) that leads to an
insolvency event with respect to the issuer of the reference shares.

 

If a merger
event or tender offer occurs, coupon payment amounts will accrue on the
Securities through the approval date and be paid on the accelerated Maturity
Date.  Such coupon payments will be
calculated using a 360-day year comprised of twelve 30-day months.  If a delisting event or an insolvency event
occurs, the Company will pay all remaining scheduled unpaid coupon payments due
to a Holder through the scheduled Maturity Date on the accelerated Maturity
Date.  

 

For the
purposes of making an adjustment required by a reorganization event, the
Calculation Agent will determine the value of each type of property distributed
in the distribution, in its sole discretion. 
For any property distributed consisting of new shares, the Calculation
Agent will use the closing price of the new shares on the approval date.  The Calculation Agent may value other types
of property in any manner it determines, in its sole discretion, to be
appropriate.  If a holder of the common
stock of the issuer of the reference shares elects to receive different types
or combinations of types of property in the reorganization event, such property
will consist of the types and amounts of each type distributed to a holder that
makes no election, as determined by the Calculation Agent.

 

R-10

 

If a
reorganization event occurs and the Calculation Agent adjusts the physical
delivery amount to consist of the property distributed in the reorganization
event as described above, the Calculation Agent will make further antidilution
adjustments for later events that affect such property, or any component of
such property, comprising the new physical delivery amount.  The Calculation Agent will do so to the same
extent that it would make adjustments if the common stock of the issuer of the
reference shares was outstanding and was affected by the same kinds of
events.  If a subsequent reorganization
event affects only a particular component of the physical delivery amount, the
required adjustment will be made with respect to that component, as if it alone
were the physical delivery amount.  For
example, if the issuer of the reference shares merges into another company and
each share of its common stock is converted into the right to receive two new
shares of the surviving company and a specified amount of cash, the physical
delivery amount will be adjusted to consist of two new shares and the specified
amount of cash per reference share.  The
Calculation Agent will adjust the common share component of the new physical
delivery amount to reflect any later stock split or other event, including any
later reorganization event, that affects the new shares, to the extent
described in this section entitled “Antidilution adjustments” as if the new
shares were the common stock of the issuer of the reference shares.  In that event, the cash component will not be
adjusted but will continue to be a component of the physical delivery amount.  Consequently, Holders who receive reference
shares at maturity will be entitled to receive, for each $1,000 of the
outstanding principal amount of the Securities being exchanged, all components
of the physical delivery amount in effect on the exchange date, with each
component having been adjusted on a sequential and cumulative basis for all
relevant events requiring adjustment on or before the exchange date. 

 

If a reorganization event occurs, the property distributed
in the event will be substituted for the common stock of the issuer of the
reference shares as described above. 
Consequently, references to the common stock of the issuer of the
reference shares mean any property that is distributed in a reorganization
event and comprises the adjusted physical delivery amount.  Similarly, references to the issuer of the
reference shares mean any successor entity in a reorganization event.  

 

Events of Default and Acceleration

 

In case an Event of Default (as defined in the
Indenture) with respect to the Securities shall have occurred and be
continuing, the amount declared due and payable upon any acceleration of the
Securities (in accordance with the acceleration provisions set forth in the
Indenture) will be determined by the Calculation Agent and will equal, for each
Note, the arithmetic average, as determined by the Calculation Agent, of the
fair value of the Securities as determined by at least three but not more than
five broker-dealers (which may include Credit Suisse First Boston LLC or any of
the Company’s other subsidiaries or affiliates) as will make such fair value
determination available to the Calculation Agent. 

 

Upon due presentment for registration of transfer of
this Note at the office or agency of the Company in the Borough of Manhattan,
The City of New York, a new Note or Securities of authorized denominations for
an equal aggregate principal amount will be issued to the transferee in
exchange therefor, subject to the limitations provided in the Indenture,
without charge except for any tax or other governmental charge imposed in
connection therewith.

 

R-11

 

The Company, the Trustee and any agent of the Company
or the Trustee may deem and treat the registered Holder hereof as the absolute
owner of this Note (whether or not this Note shall be overdue and
notwithstanding any notation of ownership or other writing hereon) for the
purpose of receiving payment of, or on account of, the Redemption Amount
hereof, and for all other purposes, and neither the Company nor the Trustee nor
any agent of the Company or the Trustee shall be affected by any notice to the
contrary.

 

No recourse under or upon any obligation, covenant or
agreement contained in the Indenture or any indenture supplemental thereto or
in any Note, or because of any indebtedness evidenced thereby, shall be had
against any incorporator as such, or against any past, present or future
stockholder, officer, director or employee, as such, of the Company or of any
successor, either directly or through the Company or any successor, under any
rule of law, statute or constitutional provision or by the enforcement of any
assessment or by any legal or equitable proceeding or otherwise, all such
liability being expressly waived and released by the acceptance hereof and as
part of the consideration for the issue hereof.

 

The calculation agent for the Securities (the “Calculation
Agent”) is Credit Suisse First Boston International.  The calculations and determinations of the
Calculation Agent will be final and binding upon all parties (except in the
case of manifest error).  The Calculation
Agent will have no responsibility for good faith errors or omissions in its
calculations and determinations, whether caused by negligence or otherwise.

 

Terms used herein that are defined in the Indenture
and not otherwise defined herein shall have the respective meanings assigned
thereto in the Indenture.

 

The laws of the State of New York (without regard to
conflicts of laws principles thereof) shall govern this Note.

R-12

 

FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto

 

	
  [PLEASE INSERT SOCIAL
  SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE]

  
	
   

  
	
   

  
	
   

  
	
  [PLEASE PRINT OR TYPE
  NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE]

  
	
   

  
	
   

  
	
  the within Note and all
  rights thereunder, hereby irrevocably constituting and appointing

  
	
   

  
	
   

  	
  Attorney to

  
	
  transfer
  such Note on the books of the Issuer, with full power of substitution in the
  premises.

  
	
   

  
	
   

  	
  Signature:

  
	
   

  	
   

  
	
  Dated:

  	
   

  	
   

  	
   

  
	
   

  	
  NOTICE: The signature
  to this assignment must correspond with the name as written upon the face of
  the within Note in every particular without alteration or enlargement or any
  change whatsoever.

  
					

 

R-13

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