Exhibit 10.1
REGISTRATION RIGHTS AGREEMENT
     This REGISTRATION RIGHTS AGREEMENT (this “Agreement”) is made and entered
into as of December 30, 2010, by and between McMoRan Exploration Co., a Delaware
corporation (“Seller”), and Freeport-McMoRan Preferred LLC, a Delaware limited
liability company (“Purchaser”). Purchaser and Seller are sometimes referred to
collectively as the “Parties” and individually as a “Party.”
RECITALS:
     WHEREAS, Purchaser and Seller have entered into that certain Stock Purchase
Agreement (the “Purchase Agreement”), dated as of September 19, 2010, by and
between Purchaser, Seller, and Freeport-McMoRan Copper & Gold Inc., a Delaware
corporation (“Freeport”) pursuant to which Seller has agreed to issue and sell,
and Purchaser has agreed to purchase and accept, shares of Seller’s 5.75%
convertible perpetual preferred stock (the “Preferred Stock”), which is
convertible into shares of Seller’s common stock, par value $0.01 per share (the
“Common Stock”); and
     WHEREAS, to induce Purchaser to enter into the Purchase Agreement and to
consummate the transactions contemplated thereby, Purchaser has required that
Seller agree, and Seller has agreed, to enter into this Agreement and abide by
the covenants and obligations with respect to the Registrable Securities as set
forth herein; and
     NOW, THEREFORE, in consideration of the premises and of the mutual
promises, representations, warranties, covenants, conditions and agreements
contained herein, and for other valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Parties agree as follows:
ARTICLE 1
DEFINITIONS
     Section 1.1 Definitions. Capitalized terms used herein without definition
shall have the meanings given to them in the Purchase Agreement. The terms set
forth below are used herein as so defined:
     “Agreement” has the meaning specified in the introductory paragraph of this
Agreement.
     “Common Stock” has the meaning specified in the recitals of this Agreement.
     “Effectiveness Period” has the meaning specified in Section 2.1(b) of this
Agreement.
     “Holder” means the record holder of any Registrable Securities; provided,
that no such record holder shall be deemed to be a “Holder” if the rights under
Article II hereof have not been transferred or assigned to such record holder in
accordance with Section 2.11.
     “Included Registrable Securities” has the meaning specified in
Section 2.2(a) of this Agreement.

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     “Losses” has the meaning specified in Section 2.9(a) of this Agreement.
     “Managing Underwriter” means, with respect to any Underwritten Offering,
the book-running lead manager(s) of such Underwritten Offering.
     “NYSE” means The New York Stock Exchange, Inc.
     “Parity Securities” has the meaning specified in Section 2.2(b) of this
Agreement.
     “Preferred Stock” has the meaning specified in the recitals of this
Agreement.
     “Purchase Agreement” has the meaning specified in the recitals of this
Agreement.
     “Purchaser” has the meaning specified in the introductory paragraph of this
Agreement.
     “Registrable Securities” means the Preferred Stock, the Common Stock
issuable upon conversion of the Preferred Stock and any additional securities
issued with respect to such shares of Preferred Stock or Common Stock.
     “Registration Expenses” has the meaning specified in Section 2.8(b) of this
Agreement.
     “Registration Statement” means any registration statement of Seller filed
under the Securities Act that covers the resale of any of the Registrable
Securities pursuant to the provisions of this Agreement, amendments and
supplements to such Registration Statement, including post-effective amendments,
all exhibits and all material incorporated by reference in such Registration
Statement.
     “SEC” means the United States Securities and Exchange Commission.
     “Seller” has the meaning specified in the introductory paragraph of this
Agreement.
     “Selling Expenses” has the meaning specified in Section 2.8(b) of this
Agreement.
     “Selling Holder” means a Holder who is selling Registrable Securities
pursuant to a registration statement.
     “Selling Holder Indemnified Persons” has the meaning specified therefore in
Section 2.9(a) of this Agreement.
     “Underwritten Offering” means an offering (including an offering pursuant
to a Registration Statement) in which shares of Preferred Stock or Common Stock
are sold to an underwriter on a firm commitment basis for reoffering to the
public or an offering that is a “bought deal” with one or more investment banks.
     Section 1.2 Registrable Securities. Any Registrable Security will cease to
be a Registrable Security upon the earliest of (a) when a registration statement
covering such Registrable Security becomes or has been declared effective by the
SEC and such Registrable Security has been sold or disposed of pursuant to such
effective registration statement; (b) when

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such Registrable Security has been disposed of pursuant to any section of
Rule 144 (or any similar provision then in effect) under the Securities Act or
such Registrable Security is eligible to be disposed of by the Holder thereof
under Rule 144 without restriction as to volume; (c) when such Registrable
Security is held by Seller or one of its subsidiaries; and (d) when such
Registrable Security has been sold in a private transaction in which the
transferor’s rights under this Agreement are not assigned to the transferee of
such securities pursuant to Section 2.11 hereof.
ARTICLE 2
REGISTRATION RIGHTS
     Section 2.1 Registration.
          (a) Not later than 60 days after the Closing Date, Seller shall file
with the SEC an automatic shelf Registration Statement (or, if Seller is not
eligible to use an automatic shelf Registration Statement, a Registration
Statement on Form S-3 or such other form as is then available to Seller to
effect a registration for resale of the Registrable Securities) covering the
resale of the Registrable Securities. Any Registration Statement shall provide
for the resale of Registrable Securities pursuant to any method or combination
of methods legally available to, and requested by, the Holder of any Registrable
Securities covered by such Registration Statement. If such Registration
Statement is not automatically effective upon filing, then Seller shall use its
commercially reasonable efforts to cause such Registration Statement to be
declared effective not later than 240 days after the Closing Date.
          (b) Seller shall use its commercially reasonable efforts to cause a
Registration Statement filed pursuant to this Section 2.1 to be effective,
supplemented, amended and replaced to the extent necessary to ensure that it is
available for the resale of all Registrable Securities by the Holders until the
earliest date on which any of the following occurs: (i) all Registrable
Securities covered by such Registration Statement have ceased to be Registrable
Securities and (ii) there are no longer any Registrable Securities outstanding
(the “Effectiveness Period”). Subject to Section 2.3, upon the occurrence of any
event that would cause the Registration Statement or the prospectus contained
therein (i) to contain an untrue statement of material fact or omit to state any
material fact necessary to make the statements therein not misleading or (ii)
not to be effective and usable for the resale of all or part of the Registrable
Securities by the Holders, Seller shall promptly file an appropriate amendment
to the Registration Statement curing such defect, and, if SEC review is
required, use its commercially reasonable efforts to cause such amendment to be
declared effective as soon as practicable. Seller shall prepare and file with
the SEC such amendments and post-effective amendments to the Registration
Statement as may be necessary to keep such Registration Statement effective
during the Effective Period; cause the prospectus to be supplemented by any
required prospectus supplement, and as so supplemented to be filed pursuant to
Rule 424 under the Securities Act, and to comply fully with the rules and
regulations under the Securities Act in a timely manner; and comply with the
provisions of the Securities Act with respect to the disposition of all
securities covered by the Registration Statement during the Effectiveness
Period.
          (c) Subject to Section 2.3, a Registration Statement when effective
will comply as to form in all material respects with all applicable requirements
of the Securities Act

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and the Exchange Act and will not contain an untrue statement of a material fact
or omit to state a material fact required to be stated therein or necessary to
make the statements therein not misleading (and, in the case of any prospectus
contained in such Registration Statement, in the light of the circumstances
under which a statement is made). As soon as practicable following the date that
a Registration Statement becomes effective, but in any event within two
(2) Business Days of such date, Seller shall provide Purchaser with written
notice of the effectiveness of such Registration Statement.
     Section 2.2 Piggyback Rights.
          (a) Participation. If at any time Seller proposes to file (i) a shelf
registration statement other than a Registration Statement contemplated by
Section 2.1, (ii) a prospectus supplement to an effective shelf registration
statement, other than a Registration Statement contemplated by Section 2.1, and
Holders may be included without the filing of a post-effective amendment thereto
that requires Seller to request acceleration of the same from the SEC, or
(iii) a registration statement, other than a shelf registration statement, in
any case, for the sale of Preferred Stock or Common Stock in an Underwritten
Offering for its own account and/or another Person, then as soon as practicable
following the engagement of counsel by Seller to prepare the documents to be
used in connection with an Underwritten Offering, Seller shall give written
notice of such proposed Underwritten Offering to each Holder holding outstanding
Registrable Securities and such notice shall offer such Holder the opportunity
to include in such Underwritten Offering such number of Registrable Securities
(the “Included Registrable Securities”) as each such Holder may request in
writing; provided, however, that if Seller has been advised by the Managing
Underwriter that the inclusion of Registrable Securities for sale for the
benefit of the Holders will have an adverse effect on the price, timing (other
than by reason of the notice periods set forth herein) or distribution of the
Preferred Stock or Common Stock in the Underwritten Offering, then (a) Seller
shall not be required to offer such opportunity to the Holders, in which case
Seller shall provide the Holders written advisement of their exclusion (which
notice need not include any explanation of the reasons for the exclusion) from
the Underwritten Offering no later than 24 hours after the pricing of the
Underwritten Offering, or (b) if any Registrable Securities can be included in
the Underwritten Offering in the opinion of the Managing Underwriter, then the
amount of Registrable Securities to be offered for the accounts of Holders shall
be determined based on the provisions of Section 2.2(b), in which case Seller
shall provide the Holders written advisement of their reduced participation
(which notice need not include any explanation of the reasons for the reduced
participation) in the Underwritten Offering no later than 24 hours after the
pricing of the Underwritten Offering. Any notice required to be provided in this
Section 2.2(a) to Holders shall be provided on a Business Day pursuant to
Section 3.1 hereof and receipt of such notice shall be confirmed by the Holder
(provided that the failure of the Holder to confirm receipt shall not affect the
validity or timing of delivery of such notice). Each such Holder shall have two
(2) Business Days (or one (1) Business Day in connection with any overnight or
bought Underwritten Offering) after written notice has been delivered to request
in writing the inclusion of Registrable Securities in the Underwritten Offering.
If no written request for inclusion from a Holder is received within the
specified time, each such Holder shall have no further right to participate in
such Underwritten Offering. If, at any time after giving written notice of its
intention to undertake an Underwritten Offering and prior to the closing of such
Underwritten Offering, Seller shall

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determine for any reason not to undertake or to delay such Underwritten
Offering, Seller may, at its election, give written notice of such determination
to the Selling Holders and, (x) in the case of a determination not to undertake
such Underwritten Offering, shall be relieved of its obligation to sell any
Included Registrable Securities in connection with such terminated Underwritten
Offering, and (y) in the case of a determination to delay such Underwritten
Offering, shall be permitted to delay offering any Included Registrable
Securities for the same period as the delay in the Underwritten Offering. Any
Selling Holder shall have the right to withdraw such Selling Holder’s request
for inclusion of such Selling Holder’s Registrable Securities in such
Underwritten Offering by giving written notice to Seller of such withdrawal at
least one Business Day prior to the time of pricing of such Underwritten
Offering.
          (b) Priority. If the Managing Underwriter or Underwriters of any
proposed Underwritten Offering of Preferred Stock or Common Stock included in an
Underwritten Offering involving Included Registrable Securities advises Seller
that the total amount of Registrable Securities that the Selling Holders and any
other Persons intend to include in such offering exceeds the number that can be
sold in such offering without being likely to have an adverse effect on the
price, timing (other than by reason of the notice periods set forth herein) or
distribution of the Preferred Stock or Common Stock offered, then the Preferred
Stock and Common Stock to be included in such Underwritten Offering shall
include the number of Registrable Securities that such Managing Underwriter or
Underwriters advises Seller can be sold without having such adverse effect, with
such number to be allocated (i) first, to Seller and (ii) second, pro rata among
the Selling Holders who have requested participation in such Underwritten
Offering and any other holder of securities of Seller having rights of
registration on parity with the Registrable Securities (the “Parity
Securities”). The pro rata allocations for each Selling Holder who have
requested participation in such Underwritten Offering shall be the product of
(a) the aggregate number of Registrable Securities proposed to be sold by all
Selling Holders in such Underwritten Offering multiplied by (b) the fraction
derived by dividing (x) the number of Registrable Securities owned on the
Closing Date by such Selling Holder by (y) the aggregate number of Registrable
Securities owned on the Closing Date by all Selling Holders and holders of
Parity Securities participating in the Underwritten Offering.
          (c) Termination of Piggyback Registration Rights. Each Holder’s rights
under Section 2.2 shall terminate upon such Holder ceasing to hold at least
1,000,000 of the then outstanding Registrable Securities.
     Section 2.3 Delay Rights.
     Notwithstanding anything to the contrary contained herein, Seller may, upon
written notice to any Selling Holder whose Registrable Securities are included
in a Registration Statement or other registration statement contemplated by this
Agreement, suspend such Selling Holder’s use of any prospectus which is a part
of a Registration Statement or other registration statement (in which event the
Selling Holder shall discontinue sales of the Registrable Securities pursuant to
such Registration Statement or other registration statement but may settle any
previously made sales of Registrable Securities) if (i) Seller is pursuing an
acquisition, merger, reorganization, disposition or other similar transaction
and Seller determines in good faith that Seller’s ability to pursue or
consummate such a transaction would be materially adversely affected by any
required disclosure of such transaction in a Registration Statement or other

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registration statement; (ii) Seller has experienced some other material
non-public event the disclosure of which at such time, in the good faith
judgment of the Board of Directors of Seller, would materially and adversely
affect Seller; or (iii) Seller would be required to prepare and file any
financial statements (other than those it customarily prepares or before it
customarily files such financial statements); provided, however, that in no
event shall the Selling Holders be suspended from selling Registrable Securities
pursuant to a Registration Statement or other registration statement for a
period that exceeds an aggregate of 45 days in any 180-day period or 90 days in
any 365-day period, in each case, exclusive of days covered by any lock-up
agreement executed by Purchaser in connection with any Underwritten Offering.
Upon disclosure of such information or the termination of the condition
described above, Seller shall provide prompt written notice to the Selling
Holders whose Registrable Securities are included in a Registration Statement,
and shall promptly terminate any suspension of sales it has put into effect and
shall take such other reasonable actions to permit registered sales of
Registrable Securities as contemplated in this Agreement.
     Section 2.4 Underwritten Offerings. In the event that one or more Holders
elects to dispose of at least 1,000,000 Registrable Securities under a
Registration Statement pursuant to an Underwritten Offering, Seller shall, upon
request by such Holders, retain underwriters in order to permit such Holders to
effect such sale though an Underwritten Offering; provided, that Seller shall
not be required to effect more than three Underwritten Offerings pursuant to
this Section 2.4 and the Holders shall be limited to one such request in any
six-month period. In connection with any Underwritten Offering under this
Agreement, the holders of a majority of the Registrable Securities being
disposed of pursuant to the Underwritten Offering shall be entitled to select
the Managing Underwriter or Underwriters for such Underwritten Offering, subject
to the consent of Seller, which shall not be unreasonably withheld, delayed or
conditioned. In connection with an Underwritten Offering contemplated by this
Agreement in which a Selling Holder participates, each Selling Holder and Seller
shall be obligated to enter into an underwriting agreement that contains such
representations, covenants, indemnities and other rights and obligations as are
customary in underwriting agreements for firm commitment offerings of
securities. No Selling Holder may participate in such Underwritten Offering
unless such Selling Holder agrees to sell its Registrable Securities on the
basis provided in such underwriting agreement and completes and executes all
questionnaires, powers of attorney and other documents reasonably required under
the terms of such underwriting agreement. Each Selling Holder may, at its
option, require that any or all of the representations and warranties by, and
the other agreements on the part of, Seller to and for the benefit of such
underwriters also be made to and for such Selling Holder’s benefit and that any
or all of the conditions precedent to the obligations of such underwriters under
such underwriting agreement also be conditions precedent to its obligations. No
Selling Holder shall be required to make any representations or warranties to or
agreements with Seller or the underwriters other than representations,
warranties or agreements regarding the identity of such Selling Holder, its
authority to enter into such underwriting agreement and to sell, and its
ownership of, the securities being registered on its behalf, its intended method
of distribution and any other representation required by Law. If any Selling
Holder disapproves of the terms of an underwriting, such Selling Holder may
elect to withdraw therefrom by notice to Seller and the Managing Underwriter;
provided, however, that such withdrawal must be made at least one Business Day
prior to the time of pricing of such

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Underwritten Offering. No such withdrawal or abandonment shall affect Seller’s
obligation to pay Registration Expenses.
     Section 2.5 Sale Procedures. In connection with its obligations under this
Article 2, Seller will, as expeditiously as possible:
          (a) subject to Section 2.3, prepare and file with the SEC such
amendments and supplements to, and replacements of, a Registration Statement and
the prospectus used in connection therewith as may be necessary to keep such
Registration Statement effective for the Effectiveness Period and as may be
necessary to comply with the provisions of the Securities Act with respect to
the disposition of all Registrable Securities covered by such Registration
Statement;
          (b) if a prospectus supplement will be used in connection with the
marketing of an Underwritten Offering from a Registration Statement and the
Managing Underwriter at any time shall notify Seller in writing that, in the
sole judgment of such Managing Underwriter, inclusion of detailed information to
be used in such prospectus supplement is of material importance to the success
of the Underwritten Offering of such Registrable Securities, Seller shall use
its commercially reasonable efforts to include such information in such
prospectus supplement;
          (c) furnish to each Selling Holder (i) before filing a Registration
Statement or any other registration statement contemplated by this Agreement or
any supplement or amendment thereto, copies of reasonably complete drafts of all
such documents proposed to be filed (including exhibits), and provide each such
Selling Holder the opportunity to object to any information pertaining to such
Selling Holder and its plan of distribution that is contained therein and make
the corrections reasonably requested by such Selling Holder with respect to such
information prior to filing such Registration Statement or such other
registration statement or supplement or amendment thereto, and (ii) such number
of copies of such Registration Statement or such other registration statement
and the prospectus included therein and any supplements and amendments thereto
as such Selling Holder may reasonably request in order to facilitate the public
sale or other disposition of the Registrable Securities covered by such
Registration Statement or other registration statement;
          (d) if applicable, use its commercially reasonable efforts to register
or qualify the Registrable Securities covered by a Registration Statement or any
other registration statement contemplated by this Agreement under the securities
or blue sky laws of such jurisdictions as the Selling Holders or, in the case of
an Underwritten Offering, the Managing Underwriter, shall reasonably request;
provided, however, that Seller will not be required to qualify generally to
transact business in any jurisdiction where it is not then required to so
qualify or to take any action that would subject it to general service of
process in any such jurisdiction where it is not then so subject;
          (e) promptly notify each Selling Holder, at any time when a prospectus
relating thereto is required to be delivered by any of them under the Securities
Act, of (i) the filing of a Registration Statement or any other registration
statement contemplated by this Agreement or any prospectus or prospectus
supplement to be used in connection therewith, or

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any amendment or supplement thereto, and, with respect to such Registration
Statement or any other registration statement or any post-effective amendment
thereto, when the same has become effective; and (ii) the receipt of any written
comments from the SEC with respect to any filing referred to in clause (i) of
this Section 2.5(e) and any written request by the SEC for amendments or
supplements to a Registration Statement or any other registration statement or
any prospectus or prospectus supplement thereto;
          (f) immediately notify each Selling Holder, at any time when a
prospectus relating thereto is required to be delivered under the Securities
Act, of (i) the prospectus or prospectus supplement contained in a Registration
Statement or any other registration statement contemplated by this Agreement, as
then in effect, including an untrue statement of a material fact or omitting to
state any material fact required to be stated therein or necessary to make the
statements therein not misleading (in the case of any prospectus contained
therein, in the light of the circumstances under which a statement is made);
(ii) the issuance or threat of issuance by the SEC of any stop order suspending
the effectiveness of a Registration Statement or any other registration
statement contemplated by this Agreement, or the initiation of any proceedings
for that purpose; or (iii) the receipt by Seller of any notification with
respect to the suspension of the qualification of any Registrable Securities for
sale under the applicable securities or blue sky laws of any jurisdiction.
Subject to Section 2.3, following the provision of such notice, Seller agrees to
use commercially reasonable efforts to, as promptly as practicable, amend or
supplement the prospectus or prospectus supplement or take other appropriate
action so that the prospectus or prospectus supplement does not include an
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements therein not misleading in
the light of the circumstances then existing and to take such other commercially
reasonable action as is necessary to remove a stop order, suspension, threat
thereof or proceedings related thereto;
          (g) subject to appropriate confidentiality obligations, furnish to
each Selling Holder copies of any and all transmittal letters or other
correspondence with the SEC or any other governmental agency or self-regulatory
body or other body having jurisdiction (including any domestic or foreign
securities exchange) relating to such offering of Registrable Securities;
          (h) in the case of an Underwritten Offering, use commercially
reasonable efforts to furnish upon request, (i) an opinion of counsel for Seller
dated the date of the closing under the underwriting agreement, and (ii) a “cold
comfort” letter, dated the pricing date of such Underwritten Offering and a
letter of like kind dated the date of the closing under the underwriting
agreement, in each case, signed by the independent public accountants who have
certified Seller’s financial statements included or incorporated by reference
into the applicable registration statement, and each of the opinion and the
“cold comfort” letter shall be in customary form and covering substantially the
same matters with respect to such registration statement (and the prospectus and
any prospectus supplement included therein) as have been customarily covered in
opinions of issuer’s counsel and in accountants’ letters delivered to the
underwriters in Underwritten Offerings of securities by Seller;
          (i) otherwise use its commercially reasonable efforts to comply with
all applicable rules and regulations of the SEC, and make available to its
security holders, as soon as

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reasonably practicable, an earnings statement, which earnings statement shall
satisfy the provisions of Section 11(a) of the Securities Act and Rule 158
promulgated thereunder;
          (j) make available to the appropriate representatives of the Managing
Underwriter and Selling Holders access to such information and Seller personnel
as is reasonable and customary to enable such parties to establish a due
diligence defense under the Securities Act, provided that Seller need not
disclose any non-public information to any such representative unless and until
such representative has entered into a confidentiality agreement with Seller
reasonably satisfactory to Seller;
          (k) cause all such Registrable Securities registered pursuant to this
Agreement to be listed on each securities exchange or nationally recognized
quotation system on which similar securities issued by Seller are then listed;
          (l) use its commercially reasonable efforts to cause the Registrable
Securities to be registered with or approved by such other governmental agencies
or authorities as may be necessary by virtue of the business and operations of
Seller to enable the Selling Holders to consummate the disposition of such
Registrable Securities;
          (m) in connection with any Underwritten Offering provided for
hereunder, participate in “road shows” and other marketing efforts as reasonably
requested by the Selling Holders, provided that Seller shall not be required to
participate in more than two road shows or similar marketing efforts in any
12-month period;
          (n) provide a transfer agent and registrar for all Registrable
Securities covered by such registration statement not later than the effective
date of such registration statement; and
          (o) enter into customary agreements and take such other actions as are
reasonably requested by the Selling Holders or the underwriters, if any, in
order to expedite or facilitate the disposition of such Registrable Securities.
     Each Selling Holder, upon receipt of notice from Seller of the happening of
any event of the kind described in subsection (e) of this Section 2.5, shall
forthwith discontinue offers and sales of the Registrable Securities by means of
a prospectus or prospectus supplement until such Selling Holder’s receipt of the
copies of the supplemented or amended prospectus contemplated by subsection (e)
of this Section 2.5 or until it is advised in writing by Seller that the use of
the prospectus may be resumed and has received copies of any additional or
supplemental filings incorporated by reference in the prospectus, and, if so
directed by Seller, such Selling Holder will, or will request the managing
underwriter or underwriters, if any, to deliver to Seller (at Seller’s expense)
all copies in their possession or control, other than permanent file copies then
in such Selling Holder’s possession, of the prospectus covering such Registrable
Securities current at the time of receipt of such notice.
     Section 2.6 Cooperation by Holders. Seller shall have no obligation to
include Registrable Securities of a Holder in a Registration Statement or in an
Underwritten Offering pursuant to Section 2.2(a) who has failed to timely
furnish such information concerning such Holder that Seller determines, after
consultation with its counsel, is reasonably required in order

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for the registration statement or prospectus supplement, as applicable, to
comply with the Securities Act.
     Section 2.7 Restrictions on Public Sale by Holders of Registrable
Securities. For so long as Registrable Securities in the aggregate represent
more than 10% of the outstanding Common Stock of Seller, each Holder of
Registrable Securities agrees to enter into a customary letter agreement with
underwriters providing such Holder will not effect any public sale or
distribution of the Registrable Securities during the 90 calendar day period
beginning on the date of a prospectus or prospectus supplement filed with the
SEC with respect to the pricing of an Underwritten Offering, provided that
(i) the duration of the foregoing restrictions shall be no longer than the
duration of the shortest restriction generally imposed by the underwriters on
Seller or the officers, directors or any other stockholder of Seller on whom a
restriction is imposed and (ii) the restrictions set forth in this Section 2.7
shall not apply to any Registrable Securities that are included in such
Underwritten Offering by such Holder. Notwithstanding the foregoing, nothing in
this Section 2.7 shall restrict the ability of any Holder from disposing of its
Registrable Securities pursuant to a Rule 10b5-1 plan.
     Section 2.8 Expenses.
          (a) Expenses. Seller will pay all Registration Expenses, including, in
the case of an Underwritten Offering, whether or not any sale is made pursuant
to such Underwritten Offering. Each Selling Holder shall pay its pro rata share
of all Selling Expenses in connection with any sale of its Registrable
Securities hereunder, and Seller shall not be responsible for any Selling
Expenses. In addition, except as otherwise provided in Section 2.8 and
Section 2.9 hereof, Seller shall not be responsible for legal fees incurred by
Holders in connection with the exercise of such Holders’ rights hereunder.
          (b) Certain Definitions. “Registration Expenses” means all reasonable
expenses incident to Seller’s performance under or compliance with this
Agreement to effect the registration of Registrable Securities on a Registration
Statement pursuant to Section 2.1 or an Underwritten Offering covered under this
Agreement, and the disposition of such Registrable Securities, including,
without limitation, all registration, filing, securities exchange listing and
NYSE fees, all registration, filing, qualification and other fees and expenses
of complying with securities or blue sky laws, fees of the Financial Industry
Regulatory Authority, Inc., fees of transfer agents and registrars, all word
processing, duplicating and printing expenses, any transfer taxes and the fees
and disbursements of counsel and independent public accountants for Seller,
including the expenses of any special audits or “cold comfort” letters required
by or incident to such performance and compliance. “Selling Expenses” means all
underwriting fees, discounts and selling commissions or similar fees or
arrangements and transfer taxes allocable to the sale of the Registrable
Securities.
     Section 2.9 Indemnification.
          (a) By Seller. In the event of a registration of any Registrable
Securities under the Securities Act pursuant to this Agreement, Seller will
indemnify and hold harmless each Selling Holder thereunder, its directors,
officers, employees and agents and each Person, if any, who controls such
Selling Holder within the meaning of the Securities Act and the

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Exchange Act, and its directors, officers, employees or agents (collectively,
the “Selling Holder Indemnified Persons”), against any losses, claims, damages,
expenses or liabilities (including reasonable attorneys’ fees and expenses)
(collectively, “Losses”), joint or several, to which such Selling Holder
Indemnified Person may become subject under the Securities Act, the Exchange Act
or otherwise, insofar as such Losses (or actions or proceedings, whether
commenced or threatened, in respect thereof) arise out of or are based upon any
untrue statement or alleged untrue statement of any material fact (in the case
of any prospectus, in light of the circumstances under which such statement is
made) contained in a Registration Statement or any other registration statement
contemplated by this Agreement, any preliminary prospectus, prospectus
supplement, free writing prospectus or final prospectus contained therein, or
any amendment or supplement thereof, or arise out of or are based upon the
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein (in the case of a
prospectus, in light of the circumstances under which they were made) not
misleading, and will reimburse each such Selling Holder Indemnified Person for
any legal or other expenses reasonably incurred by them in connection with
investigating or defending any such Loss or actions or proceedings; provided,
however, that Seller will not be liable in any such case if and to the extent
that any such Loss arises out of or is based upon an untrue statement or alleged
untrue statement or omission or alleged omission so made in conformity with
information furnished by such Selling Holder Indemnified Person in writing
specifically for use in a Registration Statement or such other registration
statement, preliminary prospectus, free writing prospectus or prospectus
supplement, as applicable, it being understood that a Selling Holder will only
be required to furnish information regarding its legal name, address, the number
of securities being registered on its behalf and such other information as may
be required by Law. Such indemnity shall remain in full force and effect
regardless of any investigation made by or on behalf of such Selling Holder
Indemnified Person, and shall survive the transfer of such securities by such
Selling Holder.
          (b) By Each Selling Holder. Each Selling Holder agrees severally and
not jointly to indemnify and hold harmless Seller, its directors, officers,
employees and agents and each Person, if any, who controls Seller within the
meaning of the Securities Act or of the Exchange Act, and its directors,
officers, employees and agents, to the same extent as the foregoing indemnity
from Seller to the Selling Holders, but only with respect to information
regarding such Selling Holder furnished in writing by or on behalf of such
Selling Holder expressly for inclusion in a Registration Statement or any other
registration statement contemplated by this Agreement, any preliminary
prospectus, prospectus supplement, free writing prospectus or final prospectus
contained therein, or any amendment or supplement thereof; provided, however,
that the liability of each Selling Holder shall not be greater in amount than
the dollar amount of the proceeds (net of any Selling Expenses) received by such
Selling Holder from the sale of the Registrable Securities giving rise to such
indemnification.
          (c) Notice. Promptly after receipt by an indemnified party hereunder
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 hereunder,
notify the indemnifying party in writing thereof, but the omission so to notify
the indemnifying party shall not relieve it from any liability that it may have
to any indemnified party other than under this Section 2.9 except to the extent
that the indemnifying party is prejudiced by such omission. In any action
brought against

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any indemnified party, it shall notify the indemnifying party of the
commencement thereof. The indemnifying party shall be entitled to participate in
and, to the extent it shall wish, to assume and undertake the defense thereof
with counsel reasonably satisfactory to such indemnified party and, after notice
from the indemnifying party to such indemnified party of its election so to
assume and undertake the defense thereof, the indemnifying party shall not be
liable to such indemnified party under this Section 2.9 for any legal expenses
subsequently incurred by such indemnified party in connection with the defense
thereof other than reasonable costs of investigation and of liaison with counsel
so selected; provided, however, that, (i) if the indemnifying party has failed
to assume the defense or employ counsel reasonably acceptable to the indemnified
party or (ii) if the defendants in any such action include both the indemnified
party and the indemnifying party and counsel to the indemnified party shall have
concluded that there may be reasonable defenses available to the indemnified
party that are different from or additional to those available to the
indemnifying party, or if the interests of the indemnified party reasonably may
be deemed to conflict with the interests of the indemnifying party, then the
indemnified party shall have the right to select a separate counsel, with the
reasonable out-of-pocket expenses and fees of such separate counsel and other
reasonable out-of-pocket expenses related to such participation to be reimbursed
by the indemnifying party as incurred. Notwithstanding any other provision of
this Agreement, no indemnified party shall settle any action brought against it
with respect to which such indemnified party is entitled to indemnification
hereunder without the consent of the indemnifying party, unless the settlement
thereof includes a complete release from all liability of, the indemnifying
party.
          (d) Contribution. If the indemnification provided for in this
Section 2.9 is held by a court or government agency of competent jurisdiction to
be unavailable to any indemnified party, then each such indemnifying party, in
lieu of indemnifying such indemnified party, shall contribute to the amount paid
or payable by such indemnified party as a result of such Loss in such proportion
as is appropriate to reflect the relative fault of the indemnifying party on the
one hand and of such indemnified party on the other in connection with the
statements or omissions that resulted in such Losses, as well as any other
relevant equitable considerations; provided, however, that in no event shall
such Selling Holder be required to contribute an aggregate amount in excess of
the lesser of (A) the amount which such Selling Holder would have been obligated
to pay under Section 2.9(b) if such indemnity was available to the indemnified
party and (B) the dollar amount of proceeds (net of Selling Expenses) received
by such Selling Holder from the sale of Registrable Securities giving rise to
such indemnification. The relative fault of the indemnifying party on the one
hand and the indemnified party on the other 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 has been made
by, or relates to, information supplied by such party, and the Parties’ relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission. The Parties agree that it would not be just and
equitable if contributions pursuant to this paragraph were to be determined by
pro rata allocation or by any other method of allocation that does not take
account of the equitable considerations referred to herein. The amount paid by
an indemnified party as a result of the Losses referred to in the first sentence
of this paragraph shall be deemed to include any legal and other expenses
reasonably incurred by such indemnified party in connection with investigating
or defending any Loss that is the subject of this paragraph. No person guilty of
fraudulent misrepresentation (within the

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meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any Person who is not guilty of such fraudulent
misrepresentation.
          (e) Other Indemnification. The provisions of this Section 2.9 shall be
in addition to any other rights to indemnification or contribution that an
indemnified party may have pursuant to law, equity, contract or otherwise.
     Section 2.10 Rule 144 Reporting. With a view to making available the
benefits of certain rules and regulations of the SEC that may permit the sale of
the Registrable Securities to the public without registration, Seller agrees to
use its commercially reasonable efforts to:
          (a) make and keep public information regarding Seller available, as
those terms are understood and defined in Rule 144 under the Securities Act, at
all times from and after the date hereof;
          (b) file with the SEC in a timely manner all reports and other
documents required of Seller under the Securities Act and the Exchange Act at
all times from and after the date hereof; and
          (c) so long as a Holder owns any Registrable Securities, furnish,
unless otherwise available via EDGAR, to such Holder forthwith a copy of the
most recent annual or quarterly report of Seller, and such other reports and
documents so filed as such Seller may reasonably request in availing itself of
any rule or regulation of the SEC allowing such Seller to sell any such
securities without registration.
     Section 2.11 Transfer or Assignment of Registration Rights. The rights
under this Article 2 may be not transferred or assigned by Purchaser except to
controlled Affiliates of Purchaser and provided that (a) Seller is given written
notice prior to any said transfer or assignment, stating the name and address of
each such transferee and identifying the securities with respect to which such
registration rights are being transferred or assigned, and (b) each such
transferee assumes in writing responsibility for its portion of the obligations
of Purchaser under this Agreement.
ARTICLE 3
MISCELLANEOUS
     Section 3.1 Communications. All notices that are required or may be given
pursuant to this Agreement shall be sufficient in all respects if given in
writing. Any such notice shall be deemed given (i) when made, if made by hand
delivery, and upon confirmation of receipt, if made by facsimile, (ii) one
Business Day after being deposited with a next-day courier, postage prepaid, or
(iii) three Business Days after being sent certified or registered mail, return
receipt requested, postage prepaid, in each case addressed as follows:
     If to Seller, to:
McMoRan Exploration Co.
1615 Poydras Street

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New Orleans, Louisiana 70112
Fax: (504) 585-3513
Attention: General Counsel
     With a copy to (which copy shall not constitute notice):
Andrews Kurth LLP
600 Travis Street, Suite 4200
Houston, Texas 77002
Fax: (713) 238-7130
Attention: Michael O’Leary
     If to Purchaser, to:
Freeport-McMoRan Preferred LLC
c/o Freeport-McMoRan Copper & Gold Inc.
One North Central Avenue
Phoenix, Arizona 85004-4414
Fax: (602) 366-7691
Attention: General Counsel
     With a copy to (which copy shall not constitute notice)::
Wachtell, Lipton, Rosen & Katz
51 West 52nd Street
New York, New York 10019
Fax: (212) 403-2000
Attention: Edward D. Herlihy
 David E. Shapiro
     If to an assignee of Purchaser, to such Holder at the address provided
pursuant to Section 2.11 above.
     Either Party may change its address for notice by notice to the other in
the manner set forth above. All notices shall be deemed to have been duly given
at the time of receipt by the Party to which such notice is addressed.
     Section 3.2 Successor and Assigns. This Agreement shall inure to the
benefit of and be binding upon the successors and permitted assigns of each of
the Parties, including subsequent Holders of Registrable Securities to the
extent permitted herein.
     Section 3.3 Recapitalization, Exchanges, Etc. Affecting the Registrable
Securities. The provisions of this Agreement shall apply to the full extent set
forth herein with respect to any and all securities of Seller or any successor
or assign of Seller (whether by merger, consolidation, sale of assets or
otherwise) that may be issued in respect of, in exchange for or in substitution
of, the Registrable Securities, and shall be appropriately adjusted for
combinations,

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stock splits, recapitalizations, pro rata distributions of securities and the
like occurring after the date of this Agreement.
     Section 3.4 Aggregation of Registrable Securities. All Registrable
Securities held or acquired by Persons who are Affiliates of one another shall
be aggregated together for the purpose of determining the availability of any
rights and applicability of any obligations under this Agreement.
     Section 3.5 Specific Performance. Damages in the event of breach of this
Agreement by a Party may be difficult, if not impossible, to ascertain, and it
is therefore agreed that each such Person, in addition to and without limiting
any other remedy or right it may have, will have the right to an injunction or
other equitable relief in any court of competent jurisdiction, enjoining any
such breach, and enforcing specifically the terms and provisions hereof, and
each of the Parties hereto hereby waives any and all defenses it may have on the
ground of lack of jurisdiction or competence of the court to grant such an
injunction or other equitable relief. The existence of this right will not
preclude any such Person from pursuing any other rights and remedies at law or
in equity that such Person may have.
     Section 3.6 Counterparts. This Agreement may be executed in counterparts,
each of which shall be deemed an original instrument, but all such counterparts
together shall constitute but one agreement. Facsimiles of signatures or
signatures delivered in portable document format (.pdf) will be deemed to be
originals.
     Section 3.7 Headings. The headings in this Agreement are for convenience of
reference only and shall not limit or otherwise affect the meaning hereof.
     Section 3.8 Governing Law.
          (a) This Agreement and the legal relations between the Parties shall
be governed by and construed in accordance with the Laws of the State of
Delaware, United States of America without regard to principles of conflicts of
laws that would direct the application of the Laws of another jurisdiction.
          (b) Any action brought in connection with this Agreement shall be
brought in the federal or state courts located in the City of Wilmington,
Delaware. The Parties hereto hereby (i) irrevocably consent to the personal
jurisdiction and venue of such courts, and (ii) waive any claim (by way of
motion, as a defense or otherwise) of improper venue, that such parties are not
subject personally to the jurisdiction of such court, that such courts are an
inconvenient forum or that this Agreement or the subject matter may not be
enforced in or by such court.
     Section 3.9 Severability of Provisions. Any provision of this Agreement
which is prohibited or unenforceable in any jurisdiction shall, as to such
jurisdiction, be ineffective to the extent of such prohibition or
unenforceability without invalidating the remaining provisions hereof or
affecting or impairing the validity or enforceability of such provision in any
other jurisdiction.

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     Section 3.10 Entire Agreement. This Agreement constitutes the entire
agreement between the Parties pertaining to the subject matter hereof, and
supersede all prior agreements, understandings, negotiations and discussions,
whether oral or written, of the Parties pertaining to the subject matter hereof.
     Section 3.11 Amendment. This Agreement may be amended only by means of a
written amendment signed by Seller and the Holders of a majority of the then
outstanding Registrable Securities; provided, however, that no such amendment
shall materially and adversely affect the rights of any Holder hereunder without
the consent of such Holder.
     Section 3.12 No Presumption. If any claim is made by a Party relating to
any conflict, omission, or ambiguity in this Agreement, no presumption or burden
of proof or persuasion shall be implied by virtue of the fact that this
Agreement was prepared by or at the request of a particular Party or its
counsel. Each Party has been represented by its own counsel in connection with
the negotiation and preparation of this Agreement and, consequently, each Party
hereby waives the application of any rule of Law that would otherwise be
applicable in connection with the interpretation of this Agreement, including
but not limited to any rule of Law to the effect that any provision of this
Agreement will be interpreted or construed against the Party whose counsel
drafted that provision.
     Section 3.13 Obligations Limited to Parties to Agreement. Each of the
Parties hereto covenants, agrees and acknowledges that no Person other than
Purchaser (and its permitted assignees) and Seller shall have any obligation
hereunder and that, notwithstanding that Purchaser is a limited liability
company, no recourse under this Agreement or under any documents or instruments
delivered in connection herewith or therewith shall be had against any former,
current or future director, officer, employee, agent, manager, stockholder or
Affiliate of Purchaser or any former, current or future director, officer,
employee, agent, general or limited partner, manager, member, stockholder or
Affiliate of any of the foregoing, whether by the enforcement of any assessment
or by any legal or equitable proceeding, or by virtue of any applicable Law, it
being expressly agreed and acknowledged that no personal liability whatsoever
shall attach to, be imposed on or otherwise by incurred by any former, current
or future director, officer, employee, agent, general or limited partner,
manager, member, stockholder or Affiliate of Purchaser or any former, current or
future director, officer, employee, agent, general or limited partner, manager,
member, stockholder or Affiliate of any of the foregoing, as such, for any
obligations of Purchaser under this Agreement or any documents or instruments
delivered in connection herewith or therewith or for any claim based on, in
respect of or by reason of such obligation or its creation, except in each case
for any assignee of Purchaser hereunder.
     Section 3.14 Interpretation. Article and Section references to this
Agreement, unless otherwise specified. All references to instruments, documents,
contracts and agreements are references to such instruments, documents,
contracts and agreements as the same may be amended, supplemented and otherwise
modified from time to time, unless otherwise specified. The word “including”
shall mean “including but not limited to.” Whenever any determination, consent
or approval is to be made or given by Seller under this Agreement, such action
shall be in Seller’s sole discretion unless otherwise specified.

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[Next page is the signature page.]

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     IN WITNESS WHEREOF, this Agreement has been signed by each of the Parties
as of the date first above written.

            McMoRan EXPLORATION CO.
      By:   /s/ Kathleen L. Quirk         Name:   Kathleen L. Quirk       
Title:   Senior Vice President & Treasurer        FREEPORT- McMoRan PREFERRED
LLC

By: FREEPORT-McMoRAN COPPER &
GOLD, INC., its sole member
      By:   /s/ Richard C. Adkerson         Name:   Richard C. Adkerson       
Title:   President & Chief Executive Officer     

[Signature Page to Registration Rights Agreement]