Document:

Senior Secured Super Priority Priming Debtor in Possession Credit Agreement

 Exhibit 10.1 
 EXECUTION VERSION 
 AMENDMENT NO. 1 dated as of September 21,
2012 (this “Amendment”), to the Senior Secured Super Priority Priming Debtor in Possession Credit Agreement dated as of August 29, 2012 (as amended, supplemented or otherwise modified through the date hereof, the
“Credit Agreement”), among ATP Oil & Gas Corporation, as debtor and debtor-in-possession (the “Borrower”), the Lenders from time to time party thereto and Credit Suisse AG, as administrative
agent (in such capacity, the “Administrative Agent”) and collateral agent. 
 WHEREAS, pursuant to the
Credit Agreement, the Lenders have extended credit to the Borrower; 
 WHEREAS, the Borrower has requested that the Lenders
agree to waive and amend certain provisions of the Credit Agreement as set forth herein; 
 WHEREAS, the undersigned Lenders are
willing to agree to such waiver and to so amend the Credit Agreement on the terms and subject to the conditions set forth herein; and 
 WHEREAS, capitalized terms used but not defined herein shall have the meanings assigned to them in the Credit Agreement; 
 NOW, THEREFORE, in consideration of the mutual agreements herein contained and other good and valuable consideration, the sufficiency and receipt of which are hereby acknowledged, the parties hereto
hereby agree as follows: 
 SECTION 1. Waiver. Subject to the satisfaction of the conditions set forth below, the
undersigned Lenders hereby permanently waive, as of the Amendment Effective Date (as defined below), any Default that may have occurred as a result of the failure of the Borrower to file with the Bankruptcy Court an application to appoint a CRO on
or before the twenty-fifth (25th) day after the Petition Date. Subject to the satisfaction of the conditions set forth below, the undersigned Lenders hereby permanently waive the requirement contained in Section 8.12 of the Credit
Agreement for delivery of a Reserve Report solely as of December 31, 2012. 
 SECTION 2. Amendments to Credit
Agreement. 
 (a) The following defined terms are hereby added to Section 1.01 of the Credit Agreement in the
proper alphabetical order: 
 “Additional Interest” means, for any day, with respect to
(a) all Loans, interest on such Loans at a rate of 0.50% per annum and (b) all Loans of Qualified Lenders and assignees thereof, interest on all Loans of such Lenders (as such Loans may be assigned) at a rate of 2.00% per annum.

 “Additional NM Loans” has the meaning set forth in Section 2.01(a)(v) hereof.

 “Approved Plan” has the meaning set forth on Schedule 10.01. 

 “First Amendment” means that certain Amendment No. 1
to the Agreement, dated as of September 21, 2012. 
 “MBL Agreement” means that certain
Agreement Regarding Prepetition Hedge Obligations, dated on or about September 19, 2012, entered into by and between the Borrower and MBL, with such amendments, modifications and supplements thereto, and amendments and restatements thereof, as
are permitted under this Agreement. 
 “Sale Motion” has the meaning set forth on Schedule
10.01. 
 “Specified Event” means the occurrence of either (a) the failure of the
Administrative Agent and Lenders to have received, on or before October 31, 2012, a Satisfactory APE Report with respect to the Telemark Project, the Gomez Project and the Clipper Project (or if received earlier, such report does not meet the
terms of the definition of Satisfactory APE Report) or (b) November 15, 2012 if the Final DIP Budget Availability Date has not occurred on or before such date. 

“Qualified Lender” means any Lender who, on or before September 25, 2012 (a) pursuant to the
First Amendment provides a Commitment for no less than its pro rata share of the Additional NM Loans or (b) purchases from Credit Suisse a Commitment to make no less than its pro rata share of Additional NM Loans committed to under the First
Amendment. 
 (b) The definition of “Clipper Project Budget” set forth in Section 1.01 of the Credit Agreement is
hereby amended such that the definition as a whole reads: 
 “ “Clipper Project Budget”
means a detailed, week by week budget of all Capital Expenditures (which Capital Expenditures shall be consistent with the Forecast) to be made with respect to the Clipper Project, which shall be in the form of Exhibit C-1 attached hereto and shall
include details as to accounts payable relating to the Clipper Project, separated by pre- and post-petition, including vendor and description of goods and/or services performed for all individual expenditures over $100,000 and not less than 90% of
all expenditures, together with any updates thereto approved by the Required Lenders in their reasonable discretion.” 

(c) The definition of “Commitment” set forth in Section 1.01 of the Credit Agreement is hereby amended such that the
definition as a whole reads: 
 “ “Commitment” means, with respect to each Lender, the
commitment of such Lender to make NM Loans under this Agreement as set forth on Annex I or in the Assignment and Assumption pursuant to which such Lender assumed its Commitment, as applicable, as such commitment as reflected on Annex I may be
(a) modified from time to time pursuant to Section 2.06, (b) modified from time to time pursuant to assignments by or to such Lender pursuant to Section 12.04(b) and (c) modified pursuant to the First Amendment.”

 (d) The definition of “DIP Budget” set forth in Section 1.01 of the Credit
Agreement is hereby amended such that the definition as a whole reads: 
 “ “DIP Budget”
means a monthly line item budget for the Borrower covering the period of at least 18 months following the Closing Date, which shall be tied to the Borrower’s long term business plan and shall be in the form of Exhibit D-1 hereto and shall
include a detailed 13-week cash flow forecast consistent with the 18-month budget, together with all updates thereto approved by the Required Lenders in their reasonable discretion.” 

(e) The definition of “DIP Budget Loans” set forth in Section 1.01 of the Credit Agreement is hereby amended such that the
definition as a whole reads: 
 “ “DIP Budget Loans” means (a) NM Loans made
(i) pursuant to the Term Sheet in the Initial DIP Budget Amount and (ii) on the Final DIP Budget Availability Date in the Final DIP Budget Amount, (b) the Additional DIP Budget Loans and (c) the Additional NM Loans.”

 (f) Clause (c) of the definition of “Final Clipper Availability Date” set forth in Section 1.01 of the
Credit Agreement is hereby amended to read as a whole “(c) [reserved]; and”. 
 (g) The definition of “Final DIP
Budget Availability Date” set forth in Section 1.01 of the Credit Agreement is hereby amended such that the provision as a whole reads: 
 “ “Final DIP Budget Availability Date” means the first date after the Closing Date and on or prior to November 15, 2012 on which each of the following conditions is met:

 (a) the Final Order has been entered; 

(b) the Administrative Agent and the Lenders have received Satisfactory APE Report(s) as to the Clipper Project, the Gomez
Project and the Telemark Project; 
 (c) the price of Brent crude per barrel is no less than $90 on an average
basis for Intercontinental Exchange’s then current twelve month forward strip; and 
 (d) the conditions set
forth in Section 6.02 are met.” 
 (h) The definition of “Gomez #9 Availability Date” set forth in
Section 1.01 of the Credit Agreement is hereby re-designated as “Additional DIP Budget Availability Date,” and amended such that the definition as a whole reads: 

“ “Additional DIP Budget Availability Date” means the first date after the Closing Date and on or
prior to January 15, 2013 on which each of the following conditions is met: 

 (a) the Final Order has been entered; 

(b) the Administrative Agent and the Lenders have received a Satisfactory APE Report with respect to the Telemark Project,
the Clipper Project and the Gomez Project; 
 (c) actual production volume at the Clipper Project is within a 10%
negative variance of the projected volumes set forth on Schedule G-1 for a fifteen (15) day period following achievement of commercial operation at the Clipper Project; and 

(d) the conditions set forth in Section 6.02 are met.” 

(i) The definition of “Gomez #9 Project Amount” set forth in Section 1.01 of the Credit Agreement is hereby re-designated
as “Additional DIP Budget Amount,” and amended such that the definition as a whole reads: 
 “
“Additional DIP Budget Amount” means $30,000,000.” 
 (j) The definition of “Gomez #9 Project
Budget” set forth in Section 1.01 of the Credit Agreement is hereby amended such that the definition as a whole reads: 
 “ “Gomez #9 Project Budget” means a detailed, week by week budget of all Capital Expenditures (which Capital Expenditures shall be consistent with the Forecast) to be made with
respect to the Gomez #9 Project, which shall be in the form of Exhibit G-1 hereto, together with any updates thereto approved by the Required Lenders in their reasonable discretion.” 

(k) The definition of “Gomez #9 Project Loans” set forth in Section 1.01 of the Credit Agreement is hereby re-designated
as “Additional DIP Budget Loans,” and amended such that the definition as a whole reads: 
 “
“Additional DIP Budget Loans” means NM Loans made on the Additional DIP Budget Availability Date in an amount up to the Additional DIP Budget Amount.” 
 (l) The definition of “Interest Payment Date” set forth in Section 1.01 of the Credit Agreement is hereby amended such that the definition as a whole reads: 

“ “Interest Payment Date” means, for any Loan or Borrowing thereof hereunder, (a) with respect
to the Additional Interest accruing on each Loan or Borrowing, the first Business Day of each calendar quarter, (b) with respect to all other interest accruing on any ABR Loan, the first Business Day of each month and (c) with respect all
other interest accruing on any Eurodollar Loan, the last day of the Interest Period applicable to the Borrowing of which such Loan is a part, and on the first Business Day of each month following the end of the first month included in such Interest
Period.” 

 (m) The definition of “Permitted Investment” set forth in Section 1.01 of the
Credit Agreement is hereby amended such that such introductory portion thereof reads: 
 “
“Permitted Investment” means an Investment by the Borrower, any Credit Party or any Restricted Subsidiary which (a) if exceeding $1,000,000 in any one transaction or series of related transactions, has been approved by the CRO
and (b) is in or consists of:” 
 (n) Clause (u) of the definition of “Permitted Liens” in
Section 1.01 of the Credit Agreement is hereby amended such that the provision as a whole reads: 

“(u) in each case to the extent existing as of the Petition Date (i) and set forth on Schedule P-1, any
interest or title of a lessor or sublessor under any lease, liens reserved in oil, gas or other Hydrocarbons, minerals, leases for bonus, royalty or rental payments and for compliance with the terms of such leases, (which, as of the Closing Date and
until the date that is 30 days after the Closing Date, shall be copies of the “Divisions of Interests” for the Borrower’s oil and gas leases, and on and after the date that is 30 days after the Closing Date, shall be a description of
all such Liens and the agreements giving rise thereto), (ii) any restriction or encumbrance that the interest or title of such lessor or sublessor may be subject to (including, without limitation, ground leases, mortgages, mechanics’
liens, tax liens, and easements), or (iii) any subordination of the interest of the lessee or sublessee under such lease to any restrictions or encumbrance referred to in the preceding clause (ii);” 

(o) The definition of “Satisfactory APE Report” set forth in Section 1.01 of the Credit Agreement is hereby amended such
that the definition as a whole reads: 
 “ “Satisfactory APE Report” means an independent
engineering report by Approved Petroleum Engineers showing: 
 (a) the aggregate PV-10 value of proved developed
producing reserves with respect to the Telemark Project, the Gomez Project and the Clipper Project (as calculated by the Approved Petroleum Engineers, based on their methodology and using their estimates for production, Capital Expenditures, lease
operating expenses and abandonment, but utilizing the Borrower’s estimates of oil, gas and liquids pricing and basis differentials used on Schedule P-2 hereto (subject to the Approved Petroleum Engineers’ confirmation of the reasonableness
of such basis differentials) is not less than $700,000,000; 
 (b) with respect to the reserves attributable to
the wells listed on Exhibit S-1 and comprising the Gomez #9 Project (i) the PV-10 value thereof is not less than $220,500,000, (ii) the total net proven reserves (on an MBOE basis for the life of the field) are not less than 14,079 and
(iii) the Capital Expenditures estimated by the Approved Petroleum Engineers for such Project are not more than 10% greater than the amounts set forth in the Gomez #9 Project Budget; and 

 (c) with respect to the reserves attributable to the wells listed on Exhibit
S-1 and comprising the Telemark Project, the Gomez Project and the Clipper Project (i) the PV-10 value thereof is not less than $1,150,000,000 and (ii) total net proven reserves (on an MBOE basis for the life of the fields) are not less
than 56,494.” 
 (p) Clause (a) of the definition of “Subsequent Clipper Availability Date” set forth in
Section 1.01 of the Credit Agreement is hereby amended to read “(a) [reserved];” 
 (q) Section 2.01(a)(iv)
of the Credit Agreement is hereby amended such that the provision as a whole reads: 
 “(iv) on the
Additional DIP Budget Availability Date in the Additional DIP Budget Amount; and” 
 (r) Section 2.01(a) of the Credit
Agreement is hereby amended by deleting the word “and” at the end of clause (iii) thereof and adding the following as clause (v) thereof: 
 “(v) so long as the Additional DIP Budget Availability Date has occurred, on the date the conditions set forth in Section 9.07(b) are met in an amount equal to the amount of additional
Commitments provided for under the First Amendment (such NM Loans the “Additional NM Loans”).” 
 (s)
Section 2.03(d) of the Credit Agreement is hereby amended such that the provision as a whole reads: 

“(d) Requests for Withdrawals. The Borrower may deliver to the Administrative Agent a Withdrawal Notice no
later than 12:00 noon (New York time) on Wednesday of each week or at such other time as may be agreed to by the Administrative Agent in its reasonable discretion. If such Withdrawal Notice is delivered prior to the delivery to the Administrative
Agent and the Lenders of the Clipper Project Budget in accordance with the terms of this Agreement and is made to fund Clipper Project expenditures, then such Withdrawal Notice shall include a reasonably detailed list of all Clipper Project
expenditures intended to be funded with the proceeds of such withdrawal (a “Clipper Withdrawal Notice”). Upon receipt of a Clipper Withdrawal Notice, the Administrative Agent shall promptly post such Clipper Withdrawal Notice for
review and, with respect to Clipper Project expenditures in excess of $100,000, approval by the Required Lenders. Upon receipt by Administrative Agent of approvals of Lenders constituting Required Lenders, such Clipper Withdrawal Notice shall be
deemed approved and the amounts requested thereunder shall (subject to the other provisions of this clause (d)), be disbursed to the Borrower. Upon the receipt of a Withdrawal Notice (and any necessary approvals for Clipper Withdrawal Notices), the
Administrative Agent shall transfer Loans in an aggregate principal amount equal to the amount specified in such Withdrawal Notice to the account of the Borrower specified in such Withdrawal Notice (i) to fund expenses of the following week in
accordance with the DIP Budget and to fund Clipper Project 

 
expenditures approved in the applicable Clipper Withdrawal Notice and (ii) following delivery to the Administrative Agent and the Lenders of the Clipper Project Budget in accordance with the
terms of this Agreement, to fund expenditures included in the Clipper Project Budget for the following week; provided that: (w) with respect to any withdrawal of proceeds of Additional NM Loans, such withdrawal may only be made to the
extent that the amount of Unrestricted Cash on Hand as of such date does not exceed the amount of Liquidity required under Section 8.19(b)(ii), (x) after giving effect to each withdrawal, the aggregate Cash Collateral held by the Borrower
will not exceed the amount necessary to fund all applicable expenditures for the following week, (y) immediately prior to making such withdrawal, no Event of Default shall have occurred and be continuing at such time or would result from such
withdrawal and (z) funds withdrawn shall be used solely to pay expenses in accordance with the DIP Budget or applicable Project Budget within permitted variances. Each Withdrawal Notice shall contain a certification by the Borrower that the
withdrawal request pursuant thereto complies, and the application of the funds so withdrawn will comply, with the terms of this Agreement in all respects, and the Administrative Agent shall be entitled to conclusively rely on such certification,
absent manifest error. Notwithstanding anything in this section to the contrary, at any time on and after the occurrence of a Specified Event, the Borrower shall not be entitled to withdraw amounts from the Collateral Account except to the extent
requested and used to fund (1) amounts set forth in the DIP Budget necessary for the Borrower to continue in operation (including, without limitation, fees, costs and expenditures made in the administration of the Bankruptcy Case), and
(2) all administrative expenditures relating to work performed or goods or services delivered in connection with the Clipper Project in accordance with the Clipper Project Budget prior to the delivery of a DIP Termination Declaration (as
defined in the Interim Order).” 
  
 (t)
Section 2.06(a)(i) of the Credit Agreement is hereby amended such that the provision as a whole reads: 

“(i) the Subsequent Clipper Project Amount shall automatically terminate upon the earlier of (A) the date that
is thirty-five (35) days after the Closing Date if the Subsequent Clipper Availability Date has not occurred as of such date or (B) the making of the NM Loans allocable to such amount on the Subsequent Clipper Availability Date;”

  
 (u) Section 2.06(a)(iii) of the Credit Agreement is
hereby amended such that the provision as a whole reads: 
 “(iii) the Final DIP Budget Amount shall
automatically terminate upon the earliest to occur of (A) the date that is thirty-five (35) days after the entry of the Interim Order if the Final Order has not been entered as of such date, (B) November 15, 2012 if the Final DIP
Budget Availability Date has not occurred by such date and (C) the making of the NM Loans allocable to such amount on the Final DIP Budget Availability Date; and” 

 (v) Section 2.06(a)(iv) of the Credit Agreement is hereby amended such that the
provision as a whole reads: 
 “(iv) the Additional DIP Budget Amount shall automatically terminate upon the
earliest of (A) the date that is thirty-five (35) days after the entry of the Interim Order if the Final Order has not been entered as of such date, (B) January 15, 2013 if the Additional DIP Budget Availability Date has not
occurred as of such date or (C) the making of the Additional DIP Budget Loans on the Additional DIP Budget Availability Date; and” 
 (w) Section 2.06(a) of the Credit Agreement is hereby amended by adding the following as clause (v) thereof: 

“(v) the Additional NM Loan Amount shall automatically terminate upon the earliest of (A) March 15, 2013 if
the Additional DIP Budget Availability Date has not occurred as of such date, (B) March 2, 2013 if the Borrower has not satisfied all of the conditions set forth in Section 9.07(b) or (C) the making of the NM Loans allocable to
such amount on the Additional DIP Budget Availability Date. 
 (x) Section 3.02(d) of the Credit Agreement is hereby
amended such that the provision as a whole reads: 
 “(d) Interest Payment Dates, etc. On the
Interest Payment Date applicable to each Loan (i) Additional Interest shall be paid in kind on such date by being capitalized and added to the principal amount of such Loan and (ii) the remaining interest accrued thereon shall be payable
in cash on such date. Once so paid, Additional Interest shall constitute principal of the Loans for all purposes under this Agreement. The applicable Alternate Base Rate or Adjusted LIBO Rate for each Interest Period or day within an Interest
Period, as the case may be, shall be determined by the Administrative Agent, and such determination shall be conclusive absent manifest error.” 
 (y) Section 3.04(c)(i) of the Credit Agreement is hereby amended such that the provision as a whole reads: 
 “(i) Not later than the first Business Day following the date that any Credit Party or Subsidiary thereof receives Net Available Cash or Net Cash Proceeds, as applicable, with respect to: 

(A) any Asset Disposition, casualty or condemnation, the Borrower shall prepay the Loans, the Prepetition Hedge
Obligations (to the extent required under the MBL Agreement) and/or permanently reduce the Commitments in accordance with Section 3.04(c)(iv) in an amount equal to 100% of such Net Available Cash or Net Cash Proceeds, as applicable;
provided that, with respect to any such event occurring with respect to any Unrestricted Subsidiary, such prepayment shall be limited to an amount equal to that portion of the proceeds thereof after deducting

 
the amount necessary to provide for payment of all Debt or other obligations of such Unrestricted Subsidiary the terms of which preclude distributions by such Unrestricted Subsidiary to the
Borrower or any other Subsidiary thereof; 
 (B) dispositions described in clause (iv) of the definition of
Asset Disposition that exceed $1,000,000 in any one transaction or series of related transactions or $6,000,000 during the term of this Agreement the Borrower shall prepay the Loans, the Prepetition Hedge Obligations (to the extent required under
the MBL Agreement) and/or permanently reduce the Commitments in accordance with Section 3.04(c)(iv) in an amount equal to 100% of such Net Available Cash; 
 (C) any issuance or sale of Capital Stock or Debt (other than Debt permitted to be incurred pursuant to Section 9.02); the Borrower shall prepay the Loans, the Prepetition Hedge Obligations (to the
extent required under the MBL Agreement) and/or permanently reduce the Commitments in accordance with Section 3.04(c)(iv) in an amount equal to 100% of such Net Available Cash or Net Cash Proceeds, as applicable; provided that,
with respect to any such event occurring with respect to any Unrestricted Subsidiary, such prepayment shall be limited to an amount equal to that portion of the proceeds thereof after deducting the amount necessary to provide for payment of all Debt
or other obligations of such Unrestricted Subsidiary the terms of which preclude distributions by such Unrestricted Subsidiary to the Borrower or any other Subsidiary thereof; 

(D) any transaction described in clause (ix) of the definition of Asset Disposition made by ATP UK, the Borrower
shall prepay the Loans, the Prepetition Hedge Obligations (to the extent required under the MBL Agreement) and/or permanently reduce the Commitments in accordance with Section 3.04(c)(iv) to the extent of the Net Available Cash or Net Cash
Proceeds thereof, as applicable, in excess of, in the aggregate for all such transactions, the amount approved by the CRO up to $50,000,000; provided, that, in no event shall the prepayment required to be made in any one instance
exceed the amount that may then be lawfully distributed to the Borrower as determined in accordance with applicable law and based on the judgment of the directors of ATP UK; or 

(E) any transaction described in clause (ix) of the definition of Asset Disposition made by ATP Netherlands, the
Borrower shall prepay the Loans, the Prepetition Hedge Obligations (to the extent required under the MBL Agreement) and/or permanently reduce the Commitments in accordance with Section 3.04(c)(iv) to the extent of the Net Available Cash or Net
Cash Proceeds thereof, as applicable, in excess of, in the aggregate for all such transactions, the amount approved by the CRO up to $25,000,000; provided, that, in no event shall the prepayment required to be made in any one instance
exceed the amount that may then be lawfully distributed to the Borrower as determined in accordance with applicable law and based on the judgment of the directors of ATP Netherlands.” 

 (z) Section 3.04(c)(ii) of the Credit Agreement is hereby amended such that the
provision as a whole reads: 
 “(ii) Commencing July 15, 2013 (or March 15, 2013 if the conditions
set forth in Section 9.07(b) are not met as and when required thereunder) and continuing on the fifteenth day of each month thereafter, the Borrower shall prepay the Loans in an amount equal to the amount by which (i) all Unrestricted Cash
on Hand of the Borrower at such date, net of any escrowed funds (provided that if Total Cash Flow over the following four-week period as set forth in the DIP Budget at such time shows a net outflow of cash during such period, either at the
end of any week within such period or in the aggregate during such period, an amount equal to the greatest net cash usage at the end of any such week or at the end of such period, will be deducted from such amount of Unrestricted Cash on Hand)
exceeds (ii) $30,000,000. All such payments will be applied (A) first to the NM Loans until paid in full and (B) thereafter to Refinancing Loans until paid in full.” 

(aa) Section 3.04(c)(iv) of the Credit Agreement is hereby amended such that the provision as a whole reads: 

“(iv) Each prepayment of Loans, the Prepetition Hedge Obligations (to the extent required under the MBL Agreement)
and/or reduction of Commitments made under paragraph (c)(i) shall be applied first, to the prepayment of all NM Loans, second, to permanently reduce the Commitments, and third, on a pro rata basis, to the prepayment of the Refinancing Loans and the
Prepetition Hedge Obligations. Each prepayment of Loans, Prepetition Hedge Obligations and/or reduction of Commitments made under paragraph (c)(ii) shall be applied first, to the prepayment of all NM Loans (without reducing the Commitments), and
second, on a pro rata basis, to the prepayment of the Refinancing Loans and the Prepetition Hedge Obligations (to the extent required under the MBL Agreement).” 
 (bb) Section 3.05 of the Credit Agreement is hereby amended by adding as subsection (d) thereof: 
 “(d) Exit Fee. The Borrower agrees to pay to each Qualified Lender or assignee thereof an exit fee equal to 1.00% of the aggregate amount of all Commitments (other than Commitments for the
Additional NM Loans) and Interim Order Loans of such Qualified Lender (as such Loans may have been assigned), which fee is fully-earned as of the date such Commitment is made and due and payable upon the earlier to occur of (i) the Maturity
Date or (ii) the payment in full of the Loans and termination of all remaining Commitments.” 

 (cc) Section 3.05 of the Credit Agreement is hereby amended by adding as subsection
(e) thereof: 
 “(e) Additional NM Loan Closing Fee. The Borrower agrees to pay to each
Qualified Lender or assignee thereof a closing fee equal to 2.00% of the amount of such Commitment, which fee is fully-earned as of the date such Commitment is made and due and payable upon the earlier to occur of (i) the Maturity Date or
(i) the payment in full of the Loans and termination of all remaining Commitments.” 
 (dd) Section 7.07(a) of
the Credit Agreement is hereby amended such that the provision as a whole reads: 
 “(a) Except as set forth
on Schedule 7.07, each of the Borrower and each Restricted Subsidiary is in compliance with all Governmental Requirements applicable to it or its Property and all related governmental agreements and other related governmental instruments binding
upon it or its Property, and possesses all licenses, permits, franchises, exemptions, approvals and other governmental authorizations necessary for the ownership of its Property and the conduct of its business, except, in each case, where the
failure to do so, individually or in the aggregate, could not reasonably be expected to result in a Material Adverse Effect.” 
 (ee) Section 7.21(d) of the Credit Agreement is hereby deleted. 
 (ff) The
introductory portion of Section 7.21(e) is hereby amended such that the introductory portion of such provision reads: 
 “(e) Notwithstanding anything set forth in this Section 7.21 to the contrary, other than up to $100,000 of the Carve Out that may be used to pay Professional Fees of the Creditors’
Committee incurred in investigating the Prepetition Obligations and liens securing the Prepetition Obligations:” 
 (gg)
Section 8.01(e)(iv) of the Credit Agreement is hereby amended such that the provision as a whole reads: 

“(iv) Updates to DIP Budget. In form and substance satisfactory to the Required Lenders in their reasonable
discretion, monthly updates, by the third Business Day of each month (and, during the period from the Subsequent DIP Budget Availability Date to the Additional DIP Budget Availability Date, weekly updates by the second Business Day of each week) to
the monthly portion of the DIP Budget to reflect actual historical performance, variance reports and a roll forward of the initial 18 month period, as well as any adjustments in amounts approved by the Required Lenders in their reasonable
discretion, and weekly updates (by the second Business Day of each week) to that portion of the DIP Budget consisting of the 13-week cash flow forecast, to reflect actual performance for the prior week, variance reports and a roll forward of the
13-week period, as well as any adjustments in amounts approved by the Required Lenders in their reasonable discretion.” 

 (hh) Section 8.01(e)(v) of the Credit Agreement is hereby amended such that the
provision as a whole reads: 
 “(v) Project Budgets. Within (a) thirty (30) days after the
Closing Date, the Clipper Project Budget in form and substance satisfactory to the Required Lenders in their reasonable discretion and (b) thirty (30) days after achievement of commercial operation at the Clipper Project, the Gomez #9
Project Budget in form and substance satisfactory to the Required Lenders in their reasonable discretion.” 
 (ii)
Section 8.01(e)(vi) of the Credit Agreement is hereby amended such that the provision as a whole reads: 

“(vi) Updates to Project Budgets. After delivery of the Project Budgets in accordance with clause
(v) above, in form and substance satisfactory to the Required Lenders, monthly updates, by the first Business Day of each month, to each Project Budget to reflect actual historical performance, variance reports and a roll forward of the initial
period covered thereby, as well as any adjustments in amounts approved by the Required Lenders in their reasonable discretion.” 
 (jj) Section 8.12(c) of the Credit Agreement is hereby amended such that the provision reads as a whole: 
 “(c) The Borrower shall at all times cooperate with the Approved Petroleum Engineers so as to enable them to produce all reports required by, or contemplated to be delivered under, this Agreement.
Without limiting the foregoing, the Borrower shall (i) provide all necessary information to NSAI (including information reasonably requested by NSAI and such other information as the Borrower believes will be reasonably necessary for NSAI to
prepare the Satisfactory APE Report as to the Telemark Project, the Clipper Project and the Gomez Project), on or before September 25, 2012 and (ii) use its best efforts to cooperate with NSAI in connection with its preparation of the
Satisfactory APE Report as to the Telemark Project, the Clipper Project and the Gomez Project, anticipated to be delivered on or before October 10, 2012.” 
 (kk) Section 8.17 of the Credit Agreement is hereby amended such that the provision as a whole reads: 
 “8.17 CRO. On or before September 14, 2012, the Borrower shall have filed with the Bankruptcy Court an application to appoint a CRO. The Borrower shall confer with the Administrative
Agent and Required Lenders in selecting a CRO. Once approved by the Bankruptcy Court and appointed, the Borrower shall permit the Administrative Agent and Lenders to communicate directly with the CRO.” 

 (ll) Section 8.18 of the Credit Agreement is hereby amended such that the provision as
a whole reads: 
 “8.18 Commodity Agreements. No later than 15 Business Days after the date that the
Final Order is entered the Borrower shall have entered into Commodity Arrangements reasonably satisfactory to the Administrative Agent and the Required Lenders covering at least 50% of the oil and gas that is attributable to the Borrower’s Net
Revenue Interest share of production projected to be produced for a period of between 6 and 12 months from the Closing Date, so long as the establishment costs relating to such commodity hedging arrangements shall at no time exceed in the aggregate
$3,000,000. Such commodity hedging transactions may include collars for volumes attributable to 50% of the Borrower’s interest in production, net of volumes attributable to lessors’ royalties, Production Payments and Reserve Sales;
and puts for volumes attributable to 50% of the Borrower’s Net Revenue Interest in production.” 
 (mm)
Section 8.19(a) of the Credit Agreement is hereby amended such that the provision as a whole reads: 

“(a) Monthly Measurement. The Borrower shall comply with the following financial covenant and to evidence such
compliance, shall provide to the Administrative Agent and each Lender not later than three (3) Business Days after receipt by the Borrower of the buyer remittance reports relating to the month then ended, but in no event more than 30 days after
the end of the prior month, a certificate of a Financial Officer evidencing that, when measured as of the end of the such month, the Borrower has produced no less than the BOE per day (on a monthly average basis) specified on Schedule 8.19 for
such month; provided that all such minimum amounts shall be adjusted on a reasonable basis for a period not to exceed sixty (60) days based on outages due to Acts of God.” 

(nn) Section 9.02(h) of the Credit Agreement is hereby amended such that the provision as a whole reads: 

“(h) Debt consisting of surety bonds or other financial assurances or security in favor of the BOEM (the
“BOEM Bonds”); provided that as of any date of determination, the cumulative amount of expenditures and/or security (including any cash collateral deposits) incurred or provided to support or otherwise obtain the issuance of
BOEM Bonds, plus the amount of plugging and abandonment expenditures, during the period from and including the Petition Date through and including the date of determination shall not exceed 110% of the amount specified for such type of bonding or
collateral requirements and plugging and abandonment expenses in the DIP Budget for such period.” 
 (oo) Section 9.07
of the Credit Agreement is hereby amended such that the provision as a whole reads: 

 “9.07 Capital Expenditures. The Borrower will not, and will not
permit any Credit Party or Restricted Subsidiary to make or contract to make any Capital Expenditures other than as permitted under the DIP Budget and the applicable Project Budgets; provided, that: 

(a) with respect to any Capital Expenditure or series of related Capital Expenditures in excess of $1,000,000 the CRO
shall have approved such Capital Expenditure(s); and 
 (b) no Capital Expenditures with respect to the Gomez #9
Project may be made unless the following conditions are satisfied on or before March 2, 2013: 
 (i) the
Lenders have received (A) a Satisfactory APE Report with respect to the Gomez #9 Project, (B) a Satisfactory APE Report as to the Telemark Project, the Gomez Project and the Clipper Project and (C) an updated report by NSAI with
respect to the Telemark Project, the Gomez Project and the Clipper Project as of February 1, 2013 showing an aggregate PV-10 value utilizing the then current forward pricing strip of at least $1,150,000,000 and total net proven reserves (on an
MBOE basis for the life of the fields) of not less than the result of 56,000 minus actual production during the period from the date used in the prior NSAI report to January 31, 2013; 

(ii) the Lenders shall have received the Gomez #9 Project Budget and the Required Lenders shall be satisfied, in their
sole and absolute discretion, with such Budget; 
 (iii) the CRO shall have assessed the costs, benefits and
feasibility of the Gomez #9 Project and confirmed to the Lenders his opinion that (A) the Gomez #9 Project is viable and feasible in accordance with the Gomez #9 Budget and DIP Budget on the timeline proposed by the Borrower, (B) the Gomez
#9 Project will improve the Borrower’s likelihood of emergence under a Reorganization Plan, and (C) after giving effect to the Gomez #9 Project Capital Expenditures, the Borrower will be able to repay the Indebtedness in full in cash; and

 (iv) actual production volume at the Clipper Project is within a 10% negative variance of the projected
volumes set forth on Schedule G-1 for a sixty (60) day period following achievement of commercial operation at the Clipper Project. 
 (pp) Section 9.16 of the Credit Agreement is hereby amended such that the provision as a whole reads: 
 “9.16 Amendments to Certain Agreements. The Borrower shall not, and shall not permit any other Credit Party or Restricted Subsidiary to amend, amend and restate, supplement or otherwise modify
the MBL Agreement, any Platform 

 
Use Agreement or any agreement set forth on Schedule 9.11 (which, as of the Closing Date and until the date that is 30 days after the Closing Date, shall be copies of the “Divisions of
Interests” for the Borrower’s oil and gas leases, and on and after the date that is 30 days after the Closing Date, shall be a description of all such agreements) or otherwise governing any Production Payments and Reserve Sales, overriding
royalty interest, net profits interest or other similar arrangement in a manner that would materially increase or extend the Borrower’s monetary obligations thereunder.” 

(qq) Section 10.01(g) of the Credit Agreement is hereby amended such that the provision reads as a whole: 

“(g) the Bankruptcy Court shall enter, or the Borrower shall seek or support the entry of, any order
(i) amending, supplementing, altering, staying, vacating, rescinding or otherwise modifying the Interim Order or the Final Order in any manner adverse to the interest of the Lenders or Agents, (ii) appointing a Chapter 11 trustee, a
responsible officer or an examiner pursuant to Section 1104 of the Bankruptcy Code with enlarged powers relating to the operation of the business of the Borrower (powers beyond those set forth in Section 1106(a)(3) and (4) and 1106(b)
of the Bankruptcy Code) of the Bankruptcy Code in the Bankruptcy Case, (iii) dismissing the Bankruptcy Case or converting the Bankruptcy Case to a Chapter 7 case, (iv) granting relief from the automatic stay to any creditor or creditors
holding or asserting a Lien or Liens or reclamation claim(s) on the assets of the Borrower to permit such creditor or creditors to foreclose upon or to reclaim Collateral with a value in excess of $3,000,000 in any one instance or in the aggregate
for all such events, or to any Person to permit actions that would have a material adverse effect on the Borrower or its estate, (v) except with respect to a Permitted Sale, approving the sale, transfer, lease, exchange, alienation or other
disposition of all or substantially all of the assets, properties or Capital Stock or other equity interests of the Borrower pursuant to Section 363 of the Bankruptcy Code or otherwise, without the consent of the Required Lenders, or
(vi) terminating the Borrower’s use of Cash Collateral.” 
 (rr) Section 10.01(w) of the Credit Agreement is
hereby amended such that the provision reads as a whole: 
 “(w) the assertion (or support) by or on behalf
of any Credit Party of any investigation, claim or action against (i) the Agents, the Arranger or the Lenders or (ii) the Prepetition Agent or the holders of the Prepetition Obligations (other than, in the case of clause (ii) only, a
customary claim and lien investigation conducted by the Creditors’ Committee for a period of no longer than 90 days from the date of the initial appointment of the Creditors’ Committee (unless such period is otherwise extended by the
Bankruptcy Court, upon a notice and hearing for good cause, for an additional 30 days).” 
 (ss) Section 10.01(x) of
the Credit Agreement is hereby amended such that the provision reads as a whole “(x) [reserved].” 

 (tt) Section 10.01(z) of the Credit Agreement is hereby amended such that the provision
reads as a whole: 
 “(z) (i) except to the extent the hearing with respect thereto is delayed at the
request of the Administrative Agent (made at the direction of the Required Lenders), an order of the Bankruptcy Court approving the engagement and appointment of a CRO shall not have been entered on or before the date that is sixty (60) days
after the Petition Date and failure of the Borrower to have in fact engaged and appointed, such CRO on or before such date, (ii) the terms of the CRO’s engagement as entered into by the Borrower and approved by the Bankruptcy Court include
a scope of services inconsistent with the application made by the Borrower and filed with the Bankruptcy Court on September 14, 2012 or (iii) upon the termination, death or disability of the CRO, (A) the Borrower shall fail to file an
application to retain a replacement CRO and seek expedited hearing of such application within 10 days after such termination, death or disability or (B) the Bankruptcy Court has not entered an order approving the retention of such replacement
CRO within 30 days after such termination, death or disability.” 
 (uu) Annex I of the Credit Agreement is hereby amended
by deleting the current annex and replacing it with the revised Annex I attached to this Amendment. 
 (vv) Schedule 7.14 of the
Credit Agreement is hereby amended by deleting the current schedule and replacing it with the revised Schedule 7.14 attached to this Amendment. 
 (ww) Schedule 8.19 of the Credit Agreement is hereby amended by deleting the current schedule and replacing it with the revised Schedule 8.19 attached to this Amendment. 

(xx) Schedule 10.01 of the Credit Agreement is hereby amended by deleting the current schedule and replacing it with the revised Schedule
10.01 attached to this Amendment. 
 SECTION 3. Bankruptcy Court. The Borrower hereby agrees to file a motion with
the Bankruptcy Court, in form and substance satisfactory to the Administrative Agent and the Required Lenders, seeking approval of this Amendment. 
 SECTION 4. Representations and Warranties. To induce the other parties hereto to enter into this Amendment, the Borrower hereby represents and warrants to each Lender and to the
Administrative Agent that, after giving effect to this Amendment: 
 (a) the representations and warranties of
each Loan Party contained in any Loan Document are true and correct in all material respects on and as of the Amendment Effective Date (as defined below) to the same extent as though made on and as of such date, except to the extent such
representations and warranties specifically relate to an earlier date, in which case such representations and warranties are true and correct in all material respects on and as of such earlier date; and 

(b) as of the Amendment Effective Date, no Default or Event of Default has occurred and is continuing. 

 SECTION 5. Conditions to Effectiveness. This Amendment shall become effective
on and as of the date on which each of the following conditions precedent is satisfied in full (such date, the “Amendment Effective Date”): 
 (a) The Administrative Agent (or its counsel) shall have received duly executed counterparts hereof that, when taken together, bear the authorized signatures of the Borrower, the Required Lenders and each
Lender providing a Commitment to make Additional NM Loans. 
 (b) The Administrative Agent shall have received agreements from
Lenders to provide an aggregate of $25,000,000 of Commitments for Additional NM Loans. 
 (c) The Administrative Agent and the
Lenders shall have received all amounts due and payable on or prior to the Amendment Effective Date, including reimbursement or payment of all expenses required to be reimbursed or paid by the Borrower hereunder or under any other Loan Document and
the Borrower shall have confirmed its acceptance of the terms of engagement by certain Lenders of Houlihan Lokey Capital, Inc. 

(d) The Required Lenders shall have received and be satisfied, in their sole and absolute discretion, with the DIP Budget revised as of
the date hereof and the Clipper Budget. 
 (e) The Administrative Agent (or its counsel) shall have received a duly executed
secretary’s certificate attaching resolutions of the Borrower’s board of directors approving this Amendment. 
 (f) The
Administrative Agent (or its counsel) shall have received customary opinions of counsel to the Borrower with respect to this Amendment. 
 (g) The Bankruptcy Court shall have entered an order, in form and substance satisfactory to the Administrative Agent and the Required Lenders, approving this Amendment. 

SECTION 6. Effect of Amendment. Except as specifically waived or amended hereby, the Credit Agreement shall continue in
full force and effect in accordance with the provisions thereof as in existence on the date hereof. On and after the Amendment Effective Date, any reference to the Credit Agreement shall mean the Credit Agreement as modified hereby. This Amendment
shall constitute a Loan Document for all purposes of the Credit Agreement and the other Loan Documents. 
 SECTION 7.
Applicable Law. THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK AND THE BANKRUPTCY CODE. 
 SECTION 8. Counterparts. This Amendment may be executed in any number of counterparts, each of which shall constitute an original but all of which when taken together shall constitute but
one agreement. Delivery of an executed signature page to this Amendment by facsimile or other customary means of electronic transmission (e.g., “pdf”) shall be as effective as delivery of a manually signed counterpart of this Amendment.

 SECTION 9. Headings. The Section headings used herein are for convenience of
reference only, are not part of this Amendment and shall not affect the construction of, or be taken into consideration in interpreting, this Amendment. 
 [Remainder of page intentionally left blank] 

 IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed by
their respective authorized officers as of the day and year first written above. 
  

					
	 ATP OIL & GAS CORPORATION, 
 as debtor and debtor-in-possession,

			
		 	by	 	/s/ Albert L. Reese, Jr.
		 		 	Name: Albert L. Reese, Jr.
		 		 	Title:   Chief Financial Officer and Treasurer

 
					
	CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent,
			
		 	by	 	/s/ Ari Bruger
		 		 	Name: Ari Bruger
		 		 	Title:   Vice President
			
		 	by	 	/s/ Michael D. Spaight
		 		 	Name: Michael D. Spaight
		 		 	Title:   Associate

 
							
		 	SIGNATURE PAGE TO AMENDMENT NO. 1 DATED AS OF SEPTEMBER 21, 2012, IN RESPECT OF THE SENIOR SECURED SUPER PRIORITY PRIMING DEBTOR IN POSSESSION CREDIT AGREEMENT
DATED AS OF AUGUST 29, 2012, AMONG ATP OIL & GAS CORPORATION, AS DEBTOR AND DEBTOR-IN-POSSESSION, THE LENDERS FROM TIME TO TIME PARTY THERETO AND CREDIT SUISSE AG, AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
		
	Lender Name:	 	Credit Suisse Loan Funding LLC
				
		 		 	by	 	/s/ Barry Zamore
		 		 		 	Name: Barry Zamore
		 		 		 	Title: Managing Director
		
		 	For any Lender requiring a second signature line:
				
		 		 	by	 	/s/ Robert Healey
		 		 		 	Name: Robert Healey
		 		 		 	Title: Authorized Signatory

 
			
	SIGNATURE PAGE TO AMENDMENT NO. 1 DATED AS OF SEPTEMBER 21, 2012, IN RESPECT OF THE SENIOR SECURED SUPER PRIORITY PRIMING DEBTOR IN POSSESSION CREDIT AGREEMENT
DATED AS OF AUGUST 29, 2012, AMONG ATP OIL & GAS CORPORATION, AS DEBTOR AND DEBTOR IN POSSESSION, THE LENDERS FROM TIME TO TIME PARTY THERETO AND CREDIT SUISSE AG, AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
	
	Lender Name: MSD CREDIT OPPORTUNITY MASTER FUND, L.P.
		
	By:	 	/s/ Mark R. Lisker
	Name:	 	Marc R. Lisker
	Title:	 	Authorized Signatory

 
			
	SIGNATURE PAGE TO AMENDMENT NO. 1 DATED AS OF SEPTEMBER 21, 2012, IN RESPECT OF THE SENIOR SECURED SUPER PRIORITY PRIMING DEBTOR IN POSSESSION CREDIT AGREEMENT
DATED AS OF AUGUST 29, 2012, AMONG ATP OIL & GAS CORPORATION, AS DEBTOR AND DEBTOR IN POSSESSION, THE LENDERS FROM TIME TO TIME PARTY THERETO AND CREDIT SUISSE AG, AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
	
	Lender Name: MSD AND SLD CHARITABLE TRUSTS INVESTING PARTNERSHIP
		
	By:	 	/s/ Mark R. Lisker
	Name:	 	Marc R. Lisker
	Title:	 	Authorized Signatory

 
			
	SIGNATURE PAGE TO AMENDMENT NO. 1 DATED AS OF SEPTEMBER 21, 2012, IN RESPECT OF THE SENIOR SECURED SUPER PRIORITY PRIMING DEBTOR IN POSSESSION CREDIT AGREEMENT
DATED AS OF AUGUST 29, 2012, AMONG ATP OIL & GAS CORPORATION, AS DEBTOR AND DEBTOR IN POSSESSION, THE LENDERS FROM TIME TO TIME PARTY THERETO AND CREDIT SUISSE AG, AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
	
	Lender Name: AUSTIN I LLC
		
	By:	 	/s/ Mark R. Lisker
	Name:	 	Marc R. Lisker
	Title:	 	General Counsel

 
			
	SIGNATURE PAGE TO AMENDMENT NO. 1 DATED AS OF SEPTEMBER 21, 2012, IN RESPECT OF THE SENIOR SECURED SUPER PRIORITY PRIMING DEBTOR IN POSSESSION CREDIT AGREEMENT
DATED AS OF AUGUST 29, 2012, AMONG ATP OIL & GAS CORPORATION, AS DEBTOR AND DEBTOR IN POSSESSION, THE LENDERS FROM TIME TO TIME PARTY THERETO AND CREDIT SUISSE AG, AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
	
	Lender Name: DOUBLE MAKO INVESTMENTS, LLC
		
	By:	 	/s/ Mark R. Lisker
	Name:	 	Marc R. Lisker
	Title:	 	General Counsel

 
			
	SIGNATURE PAGE TO AMENDMENT NO. 1 DATED AS OF SEPTEMBER 21, 2012, IN RESPECT OF THE SENIOR SECURED SUPER PRIORITY PRIMING DEBTOR IN POSSESSION CREDIT AGREEMENT
DATED AS OF AUGUST 29, 2012, AMONG ATP OIL & GAS CORPORATION, AS DEBTOR AND DEBTOR IN POSSESSION, THE LENDERS FROM TIME TO TIME PARTY THERETO AND CREDIT SUISSE AG, AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
	
	Lender Name: TINTORETTO INVESTMENTS, LLC
		
	By:	 	/s/ Mark R. Lisker
	Name:	 	Marc R. Lisker
	Title:	 	General Counsel

 
			
	SIGNATURE PAGE TO AMENDMENT NO. 1 DATED AS OF SEPTEMBER 21, 2012, IN RESPECT OF THE SENIOR SECURED SUPER PRIORITY PRIMING DEBTOR IN POSSESSION CREDIT AGREEMENT DATED AS
OF AUGUST 29, 2012, AMONG ATP OIL & GAS CORPORATION, AS DEBTOR AND DEBTOR IN POSSESSION, THE LENDERS FROM TIME TO TIME PARTY THERETO AND CREDIT SUISSE AG, AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
	
	Lender Name: FORTRESS CREDIT INVESTMENTS I LTD.,
		
	By:	 	/s/ Constantine M. Dakolias
	Name:	 	Constantine M. Dakolias
	Title:	 	Director

 
			
	SIGNATURE PAGE TO AMENDMENT NO. 1 DATED AS OF SEPTEMBER 21, 2012, IN RESPECT OF THE SENIOR SECURED SUPER PRIORITY PRIMING DEBTOR IN POSSESSION CREDIT AGREEMENT
DATED AS OF AUGUST 29, 2012, AMONG ATP OIL & GAS CORPORATION, AS DEBTOR AND DEBTOR IN POSSESSION, THE LENDERS FROM TIME TO TIME PARTY THERETO AND CREDIT SUISSE AG, AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
	
	Lender Name: FORTRESS CREDIT INVESTMENTS II LTD.,
		
	By:	 	/s/ Constantine M. Dakolias
	 Name:
	 	Constantine M. Dakolias
	 Title:
	 	Director

 
			
	 SIGNATURE PAGE TO AMENDMENT NO. 1 DATED AS OF SEPTEMBER 21, 2012, IN RESPECT OF THE SENIOR SECURED SUPER PRIORITY PRIMING
DEBTOR IN POSSESSION CREDIT AGREEMENT DATED AS OF AUGUST 29, 2012, AMONG ATP OIL & GAS CORPORATION, AS DEBTOR AND DEBTOR IN POSSESSION, THE LENDERS FROM TIME TO TIME PARTY THERETO AND CREDIT SUISSE AG, AS ADMINISTRATIVE AGENT AND COLLATERAL
AGENT

	
	Lender Name: FORTRESS CREDIT OPPORTUNITIES I LP
	
	By: FORTRESS CREDIT OPPORTUNITIES I GP
	
	Its: General Partner
		
	 By:
	 	/s/ Constantine M. Dakolias
	 Name:
	 	Constantine M. Dakolias
	 Title:
	 	President

 
			
	SIGNATURE PAGE TO AMENDMENT NO. 1 DATED AS OF SEPTEMBER 21, 2012, IN RESPECT OF THE SENIOR SECURED SUPER PRIORITY PRIMING DEBTOR IN POSSESSION CREDIT AGREEMENT DATED AS
OF AUGUST 29, 2012, AMONG ATP OIL & GAS CORPORATION, AS DEBTOR AND DEBTOR IN POSSESSION, THE LENDERS FROM TIME TO TIME PARTY THERETO AND CREDIT SUISSE AG, AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
	
	Lender Name: KLS PERFORMANCE FUND LTD.
	
	By: KLS Diversified Asset Management LP, its investment manager
		
	By:	 	/s/ Michael Zarrilli
	Name:	 	Michael Zarrilli
	Title:	 	COO

 
			
	 SIGNATURE PAGE TO AMENDMENT NO. 1 DATED AS OF SEPTEMBER 21, 2012, IN RESPECT OF THE SENIOR SECURED SUPER PRIORITY PRIMING
DEBTOR IN POSSESSION CREDIT AGREEMENT DATED AS OF AUGUST 29, 2012, AMONG ATP OIL & GAS CORPORATION, AS DEBTOR AND DEBTOR IN POSSESSION, THE LENDERS FROM TIME TO TIME PARTY THERETO AND CREDIT SUISSE AG, AS ADMINISTRATIVE AGENT AND COLLATERAL
AGENT
  

Lender Name: KLS DIVERSIFIED MASTER FUND L.P.

 
 By: KLS Diversified Asset Management LP,
its investment
manager

		
	By:	 	/s/ Michael Zarrilli
	Name:	 	Michael Zarrilli
	Title:	 	COO

 ANNEX I 
 See attached. 

 SCHEDULE 7.14 
 Subsidiaries and Partnerships 
 ATP Energy, Inc., Domestic – 100% owned by Borrower,
Restricted Subsidiary 
 ATP Oil & Gas (UK) Limited, Foreign – 100% owned by Borrower, Restricted Subsidiary 

ATP Oil & Gas (Netherlands) B.V., Foreign – 100% owned by Borrower, Restricted Subsidiary 

ATP Holdco, LLC, Domestic – 100% owned by Borrower, Unrestricted Subsidiary 
 ATP Titan Holdco, LLC, Domestic – 100% owned by Borrower, Unrestricted Subsidiary 
 ATP
Titan, LLC, Domestic—100% owned by Borrower, Unrestricted Subsidiary 
 ATP Exploration, Domestic – 100% owned by Borrower (not
capitalized), Unrestricted Subsidiary 
 ATP East Med B.V., Foreign – owned by ATP Oil & Gas (Netherlands) B.V., Restricted
Subsidiary 
 ATP East Med Number 1 B.V., Foreign – owned by ATP Oil & Gas (Netherlands) B.V., Restricted Subsidiary 

ATP East Med Number 2 B.V., Foreign – owned by ATP East Med B.V., Restricted Subsidiary 
 ATP East Med Number 3 B.V., Foreign – owned by ATP East Med B.V., Restricted Subsidiary 
 ATP
East Med Number 4 B.V., Foreign – owned by ATP East Med B.V., Restricted Subsidiary 
 ATP IP- GP, LLC, Domestic – 100% owned by ATP
Holdco, LLC, Unrestricted Subsidiary 
 ATP IP- LP, LLC, Domestic – 100% owned by ATP Holdco, LLC, Unrestricted Subsidiary 

ATP INFRASTRUCTURE PARTNERS, L.P., Domestic – Unrestricted Subsidiary 
 2% owned by ATP IP-GP, LLC, and 
 49% owned by ATP IP-LP, LLC 

 SCHEDULE 8.19 
 Minimum Monthly Average and 
 Rolling Four-Week Average of Barrels of Oil Equivalent
Per Day 
 See attached. 

 SCHEDULE 10.01 
 Milestones 
  

	1.	If a Specified Event has not occurred, then: 

  

			
	 Due Date
	  	 Milestone

	 (a)    On or before the date that is 330 days after the Petition Date
	  	File the Reorganization Plan and related disclosure statement, which shall have been approved by the Lenders.
		
	 (b)    On or before the date that is 375 days after the Petition Date
	  	Either obtain entry by the Bankruptcy Court of an order (i) approving the disclosure statement for the Reorganization Plan or (ii) approving bid procedures for a Permitted
Sale.
		
	 (c)    On or before the date that is 420 days after the Petition Date
	  	Either obtain entry by the Bankruptcy Court of an order (i) confirming the Reorganization Plan or (ii) approving a Permitted Sale.

 or 
  

	2.	If a Specified Event has occurred, then: 

  

			
	 Due Date
	  	 Milestone

	 (a)    On or before the date that is 20 days after the first occurrence of a Specified Event:
	  	Prepare a data room and begin dissemination of an information memorandum to a list of potential interested parties.
		
	 (b)    On or before the date that is 60 days after the first occurrence of a Specified Event:
	  	Either (i) file with the Bankruptcy Court a motion (the “Sale Motion”) to consummate a Permitted Sale to a stalking horse bidder or in an open auction process on
terms acceptable to the Required Lenders or (ii) file the Reorganization Plan and related disclosure statement, which shall have been approved by the Lenders and include committed financing for the implementation of the Reorganization Plan (an
“Approved Plan”).
		
	 (c)    On or before the date that is 85 days after the first occurrence of a Specified Event:
	  	The Bankruptcy Court shall have entered an order approving bid procedures for a Permitted Sale described in item (b)(i) above, which bid procedures are acceptable to the Required
Lenders.

			
	 Due Date
	  	 Milestone

	 (d)    If an Approved Plan is filed, then on or before the date that is 95 days after the first occurrence of
a Specified Event:
	  	The Bankruptcy Court shall have entered an order approving the disclosure statement for such Approved Plan.
		
	 (e)    Unless items (b), as to an Approved Plan, and (d) shall have been complied with, on or before the date
that is 110 days after the first occurrence of a Specified Event:
	  	The Bankruptcy Court shall have entered an order approving the Permitted Sale described in item (b)(i) above.
		
	 (f)     On or before the date that is 120 days after the first occurrence of a Specified
Event:
	  	The Borrower shall have consummated the Permitted Sale described in item (b)(i) above.
		
	 (g)    If item (f) has not been complied with, then on or before the date that is 130 days after the first
occurrence of a Specified Event:
	  	The Bankruptcy Court shall have entered an order confirming the Approved Plan with an effective date no later than 15 days thereafter.FORM OF WARRANT TO PURCHASE COMMON STOCK

 Exhibit 4.6 
 Execution Version 
 THE SECURITIES REPRESENTED BY THIS WARRANT HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES REPRESENTED BY THIS WARRANT HAVE BEEN ACQUIRED FOR INVESTMENT AND MAY NOT BE OFFERED,
SOLD, TRANSFERRED OR ASSIGNED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR AN OPINION OF COUNSEL, REASONABLY SATISFACTORY TO THE COMPANY, THAT REGISTRATION IS NOT REQUIRED UNDER THE SECURITIES ACT OR APPLICABLE
STATE SECURITIES LAWS UNLESS SOLD PURSUANT TO RULE 144 UNDER THE SECURITIES ACT. THE SECURITIES REPRESENTED BY THIS WARRANT ARE SUBJECT TO THE TERMS AND CONDITIONS OF, AND MAY ONLY BE TRANSFERRED IN ACCORDANCE WITH, THE TERMS OF THIS WARRANT.

 LIGHTING SCIENCE GROUP CORPORATION 
 WARRANT TO PURCHASE COMMON STOCK 
  

			
	Warrant No.:                 	  	Number of Shares:                 
		
	Issuance Date: June 15, 2012	  	

 THIS CERTIFIES THAT, for value
received,                (the “Holder”) is entitled to purchase from Lighting Science Group Corporation, a Delaware corporation (the
“Company”), at any time and from time to time during the applicable Warrant Exercise Period (defined below) at the Exercise Price (defined
below)                fully paid nonassessable shares of Common Stock (defined below) (as may be adjusted from time in accordance with the terms of this Warrant, the
“Warrant Shares”), all subject to adjustment and upon the terms and conditions provided herein. This Warrant is being issued to the Holder following the partial assignment by the Holder of that certain Warrant No. RW1 issued
to the Holder on the Original Issuance Date (as defined below) pursuant to that certain Subscription Agreement, dated May 25, 2012, by and between the Holder and the Company. 

Section 1. Definitions. 
 The following terms as used in this Warrant have the following meanings: 
 (a)
“Acquiring Entity” has the meaning attributed to it in Section 8. 
 (b)
“Affiliate” of, or a Person “Affiliated” with, a specified Person, is a Person that directly or indirectly through one or more intermediaries, controls, or is controlled by, or is under common control
with, the Person specified. 

 (c) “Business Day” means any day other than Saturday, Sunday or
other day on which commercial banks in New York, New York or San Francisco, California are authorized or obligated to close. 

(d) “Capital Stock” means any of the Company’s shares of Common Stock or preferred stock or any other
Derivative Security of the Company. 
 (e) “Change of Control” means (i) the sale, conveyance or
disposition, including but not limited to any spin-off or in-kind distribution, by the Company or by one or more of its subsidiaries, of all or substantially all of the assets of the Company (on a consolidated basis) to any Person or group (other
than the Company or its wholly-owned subsidiaries and other than pursuant to a joint venture arrangement in which the Company, directly or indirectly, receives at least fifty percent (50%) of the equity and voting interests); (ii) the
effectuation of a transaction or series of related transactions in which more than thirty-five percent (35)% of the voting power of the Company is disposed of (other than (A) as a direct result of normal, uncoordinated trading activities in the
Common Stock generally or (B) solely as a result of the disposition by a stockholder of the Company to an Affiliate of such stockholder); (iii) any merger, consolidation, stock or asset purchase, recapitalization or other business
combination transaction (or series of related transactions) as a result of which the shares of Capital Stock entitled to vote generally in the election of directors and the Preferred Shares (treated on an as-converted basis) immediately prior to
such transaction (or series of related transactions) are converted into and/or continue to represent (on an as-converted basis), in the aggregate, less than sixty-five percent (65%) of the total voting power of all shares of capital stock that
are entitled to vote generally in the election of directors of the entity surviving or resulting from such transaction (or ultimate parent thereof); (iv) a transaction or series of transactions in which any Person, entity or “group”
(as such term is used in Sections 13(d) and 14(d) of the Exchange Act) acquires more than thirty-five percent (35)% of the voting equity of the Company (other than the acquisition by a Person, entity or “group” that is an Affiliate of or
Affiliated with a Person, entity or “group” that immediately prior to such acquisition, beneficially owned thirty-five percent (35)% or more of the voting equity of the Company) or (v) Pegasus ceases to beneficially own in the
aggregate at least ten percent (10%) of the outstanding Capital Stock of the Company, on a fully-diluted basis. 
 (f)
“Common Stock” means (i) the Company’s common stock, $0.001 par value per share, and (ii) any capital stock into which the Common Stock is changed or any capital stock resulting from a reclassification of the
Common Stock. 
 (g) “Delivery Date” has the meaning attributed to it in Section 2(c).

 (h) “Derivative Security” means any right, option, warrant, convertible preferred stock or other
security or right convertible into or exercisable or exchangeable for shares of Common Stock. 
 (i) “Effective
Consideration” means the amount paid or payable to acquire shares of Common Stock (or, in the case of Derivative Securities, the amount paid or payable to acquire the Derivative Security, if any, plus the exercise price for the
underlying Common Stock). 

  
 2 

 (j) “Ex-Date” means (i) when used with respect to any issuance
or distribution, the first date on which the Common Stock trades, regular way, on the relevant Trading Market or such other market without the right to receive such issuance or distribution, and (ii) when used with respect to any subdivision,
split, combination or reclassification of shares of Common Stock, the first date on which the Common Stock trades, regular way, on such Trading Market or such other market after the time at which such subdivision, split, combination or
reclassification becomes effective. 
 (k) “Exchange Act” means the Securities Exchange Act of 1934, as
amended. 
 (l) “Exercise Date” has the meaning attributed to it in Section 2(c). 

(m) “Exercise Documents” has the meaning attributed to it in Section 2(c). 

(n) “Exercise Notice” has the meaning attributed to it in Section 2(a)(i). 

(o) “Exercise Price” is equal to the price computed using the following formula (for the avoidance of doubt,
Exercise Price shall be determined after all other adjustments to the number of Warrant Shares are taken into account): 
  

 
 where: 
  

	 	CEqV	 means, as of any date, the Fair Market Value per share of Common Stock on the Trading Day immediately preceding the Exercise Date;

  

	 	RefEqV	 $500,000,000; provided, that such amount shall be increased by any cash amounts raised by the Company (net of costs and expenses) pursuant to
any issuance or sale of any Capital Stock; provided, further, that such amount shall be decreased by any cash amounts paid by the Company pursuant to any redemption, repurchase, retirement or other acquisition of, or dividends or
distributions in respect of, any Capital Stock; 

  

	 	WS	means, as of any date, the number of Warrant Shares issuable upon exercise of this Warrant; 

 

	 	TEqV	 means, as of any date, the dollar value computed using the following formula: 

 
 

 
  

	 	S0	 means, as of any date, the number of shares of Common Stock outstanding on a fully-diluted basis (accounting for all Derivative Securities using the
treasury stock method, which, for the avoidance of doubt, would include any shares of Common Stock into which any outstanding shares of preferred stock are convertible if the liquidation value of such preferred stock is less than the Fair Market
Value of the Common Stock issuable upon conversion thereof); provided, that for purposes of calculating the number of shares of 

  
 3 

	 	
Common Stock outstanding on a fully-diluted basis, up to 10,750,000 shares of Common Stock or Derivative Securities (as adjusted for any subdivision, split, combination or reclassification of
shares of Common Stock) issued after the Original Issuance Date to the executives, directors and employees of the Company in their capacity as such pursuant to an option, stock or other equity plan approved by the Board of Directors shall not be
included in such calculation. 

  

	 	PVAG	 means, as of any date, the aggregate value of all outstanding shares of any class or series of the Company’s preferred stock, calculated as the
greater of (i) the liquidation value of each outstanding share of preferred stock and (ii) if applicable, the Fair Market Value of all shares of Common Stock (determined prior to the Open for Business on such date) issuable upon conversion
of each share of preferred stock, excluding the value of any shares of preferred stock that are included in the calculation of
S0 under the treasury stock method;

 provided, that, if: 
  

 
 then this Warrant shall be deemed to have no value; 
 provided, further, that, if: 
  
 

 
 then the Exercise Price shall not be negative and shall be deemed to equal zero. 

(p) “Event of Default” means (a) any default by the Company or any of its subsidiaries under any mortgage,
indenture or instrument under which there may be issued or by which there may be secured or evidenced any Indebtedness for money borrowed by the Company or any of its subsidiaries, whether such Indebtedness now exists, or is created after the
Original Issuance Date, if that default: (i) is caused by a failure to pay the principal of, or interest or premium, if any, on, such Indebtedness prior to the expiration of any grace period provided pursuant to the terms of such Indebtedness
on the date of such default and (x) the aggregate amount unpaid equals $10.0 million or more or (y) the principal amount of such Indebtedness aggregates to $15.0 million or more; or (ii) results in the acceleration of such
Indebtedness prior to its express maturity, and, in each case, the principal amount of any such Indebtedness aggregates to $8.0 million or more; provided, that if such default is cured or waived or any such acceleration rescinded, or such
Indebtedness is repaid, within a period of ten (10) days from the continuation of such default beyond the applicable grace period or the occurrence of such acceleration, as the case may be, no Event of Default shall be deemed to have occurred;
(b) any material breach or default under the Series H Certificate of Designation; provided, that if such breach or default is cured or waived within a period of ten (10) days from the continuation of such breach or default beyond
any applicable grace period, no Event of Default shall be deemed to have occurred; and (c) any material breach of default under the 

  
 4 

 
certificate of designation with respect to the Company’s Series G Preferred Stock, the Series I Certificate of Designation or the certificate of designation of any other series of preferred
stock of the Company (other than the Series H Convertible Preferred Stock), in each case to the extent outstanding; provided, that in the case of this clause (c), if such breach or default is cured or waived within a period of ten
(10) days from the continuation of such breach or default beyond any applicable grace period, no Event of Default shall be deemed to have occurred. 
 (q) “Fair Market Value” means, as of any date with respect to a share of Common Stock, the Trading Price as of such date; provided, that if “Fair Market Value” is
being determined in connection with a transaction with an Acquiring Entity for which Section 8(a) or Section 8(b) applies, then the fair market value of a share of Common Stock shall be the value of the consideration payable
by such Acquiring Entity for each share of Common Stock; provided, further, that for accounting purposes only, to the extent that the “Fair Market Value” is not determinable in accordance with the foregoing provisions of this
definition, “Fair Market Value” means, as of any date with respect to a share of Common Stock, the fair market value of a share of Common Stock as determined in good faith by the Board of Directors of the Company. 

(r) “Indebtedness” means, with respect to the Company and its subsidiaries: (i) any liabilities for borrowed
money or amounts owed or indebtedness issued in substitution for or exchange of indebtedness for borrowed money; (ii) obligations evidenced by notes, bonds, debentures or other similar instruments; (iii) obligations under leases
(contingent or otherwise, as obligor, guarantor or otherwise) required to be accounted for as capitalized leases pursuant to generally accepted accounting principles; (iv) obligations for amounts drawn and outstanding under acceptances, letters
of credit, contingent reimbursement liabilities with respect to letters of credit or similar facilities; (v) any liability for deferred purchase price of property or services, contingent or otherwise, as obligor or otherwise, other than
accounts payable incurred in the ordinary course of business and (vi) any accrued and unpaid interest on, and any prepayment premiums, penalties or similar contractual charges in respect of, any of the foregoing. 

(s) “Open of Business” means 9:00 a.m. New York City time. 

(t) “Original Issuance Date” means May 25, 2012. 

(u) “Payment” has the meaning attributed to it in Section 2(a)(ii). 

(v) “Pegasus” means Pegasus Capital Advisors, L.P. and its Affiliates. 

(w) “Permitted Transfer” means any transfer by Holder of all or any portion of this Warrant or all or any portion
of the Common Stock issued upon exercise of this Warrant: (i) to any Affiliate or direct or indirect equityholder of Holder or any of its Affiliates, (ii) to Pegasus, (iii) to the Company or any of the Company’s subsidiaries,
(iv) pursuant to the exercise of the co-sale rights set forth in that certain co-sale agreement, dated as of May 25, 2012, among Holder, Pegasus and certain of their Affiliates, (v) in any transaction in which all or substantially all
of the equity interests of the Company are transferred pursuant to any reorganization, merger, consolidation or sale of the Company, (vi) in a Qualified Public Offering or in another offering registered pursuant to the Securities Act after a
Qualified Public Offering, (vii) pursuant to a tender or exchange offer pursuant to the Securities Act or the Exchange Act, (viii) with the prior written consent of the Company or (ix) pursuant to a pro rata in-kind distribution or
dividend to the equityholders of Holder (and any intermediary transfers amongst Affiliates of Holder as part of giving effect thereto. 

  
 5 

 (x) “Person” means a natural person or entity, or a government or
any division, department or agency thereof. 
 (y) “Preferred Shares” means the Company’s shares of
Series H Convertible Preferred Stock and Series I Convertible Preferred Stock. 
 (z) “Qualified Public
Offering” means a firmly committed underwritten public offering of the Common Stock on the NASDAQ Stock Market or the New York Stock Exchange pursuant to an effective registration statement filed under the Securities Act, where
(a) the gross proceeds received by the Company and any selling stockholders in the offering are no less than $100 million and (b) the market capitalization of the Company immediately after consummation of the offering is no less than $500
million. 
 (aa) “Restrictive Period” has the meaning attributed to it in Section 6(a). 

(bb) “Riverwood” means Riverwood Capital Partners, L.P. and its Affiliates. 

(cc) “Securities Act” means the Securities Act of 1933, as amended. 

(dd) “Series G Holder” means any holder of the Company’s outstanding shares of Series G Preferred Stock.

 (ee) “Series H Certificate of Designation” means the Certificate of Designation of Series H
Convertible Preferred Stock of the Company, as filed with the Secretary of State of the State of Delaware and as the same may be amended, restated, supplemented or otherwise modified from time to time. 

(ff) “Series H Holder” means any holder of the Company’s outstanding shares of Series H Convertible Preferred
Stock. 
 (gg) “Series I Certificate of Designation” means the Certificate of Designation of Series I
Convertible Preferred Stock of the Company, as filed with the Secretary of State of the State of Delaware and as the same may be amended, restated, supplemented or otherwise modified from time to time. 

(hh) “Series I Holder” means any holder of the Company’s outstanding shares of Series I Convertible Preferred
Stock. 
 (ii) “Trading Day” means a day on which the Common Stock is traded on a Trading Market.

 (jj) “Trading Market” means The NASDAQ Stock Market or the New York Stock Exchange. 

  
 6 

 (kk) “Trading Price” means, for any date, the price determined by
the first of the following clauses that applies: 
 (i) after a Qualified Public Offering, the closing sale price
or, if no closing sale price is reported, the last reported sale price of the Common Stock for such date (or the nearest preceding date) on the principal Trading Market on which the Common Stock is listed or quoted for trading as reported by
Bloomberg, L.P. (based on a Trading Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)); or 
 (ii) in all other cases, the fair market value of a share of Common Stock as determined by an independent appraiser selected in good faith by the Holder and reasonably acceptable to the Company, the fees
and expenses of which shall be paid by the Company. 
 (ll) “Warrant” means this Warrant and all
Warrants issued in exchange, transfer or replacement thereof. 
 (mm) “Warrant Exercise Period” has the
meaning attributed to it in Section 2(a). 
 (nn) “Warrant Shares” has the meaning
attributed to it in the preamble of this Warrant, as may be adjusted from time to time in accordance with this Warrant. 

Section 2. Exercise of Warrant. 
 (a) This Warrant may be exercised, to the extent permitted by applicable laws and regulations, for Warrant Shares, in whole or in part, by the Holder registered on the books of the Company at any time on
or before 5:00 p.m., New York City time on May 25, 2022 (the “Warrant Exercise Period”). Any exercise of this Warrant shall be effected by: 

(i) delivery of a written notice, in the form attached as Exhibit A (the “Exercise
Notice”), of Holder’s election to exercise this Warrant with respect to the Warrant Shares; 

(ii) payment to the Company of an amount equal to the Exercise Price (determined as of the close of business on the
Trading Day prior to exercise) multiplied by the number of Warrant Shares being purchased, either (A) in cash or by wire transfer of immediately available funds or (B) by means of a cashless exercise pursuant to Section 2(d)
(the foregoing methods of payment set forth in (A) and (B), including any combination of such methods, referred to herein as the “Payment”); and 

(iii) the surrender at the principal office of the Company or to a nationally recognized courier for overnight delivery to
the Company, simultaneously with or as soon as practicable following the delivery of the Exercise Notice and the Payment, of this Warrant (or an indemnification undertaking with respect to this Warrant in the case of its loss, theft or destruction,
in such form and substance as is reasonably satisfactory to the Company). 

  
 7 

 (b) If the Holder does not exercise this Warrant in its entirety, the Holder will be
entitled to receive from the Company within a reasonable time, and in any event not exceeding five (5) Business Days, a new warrant in substantially identical form for the purchase of that number of shares of Common Stock equal to the
difference between the number of shares of Common Stock subject to this Warrant and the number of shares of Common Stock as to which this Warrant is so exercised. Notwithstanding anything in this Warrant to the contrary, the Holder hereby
acknowledges and agrees that its exercise of this Warrant for shares of Common Stock is subject to the condition (for the benefit of the Company and the Holder) that the Holder will have first received any applicable regulatory approvals required to
be obtained by Holder with respect to such exercise of the Warrants and issuance of the Warrant Shares. Unless the rights represented by this Warrant have expired or been fully exercised, the Company shall, as soon as practicable and in no event
later than five (5) Business Days after receipt of the Exercise Documents and at its own expense, issue a new Warrant identical in all respects to this Warrant, except it shall represent rights to purchase the number of Warrant Shares
purchasable immediately prior to exercise, less the number purchased. 
 (c) The Company shall, not later than the fifth
(5th) Business Day (the “Delivery Date”) following receipt of an Exercise Notice, the Payment and this Warrant or such indemnification (collectively, the “Exercise Documents”), arrange for its
transfer agent, on or before the Delivery Date, to issue and surrender to a nationally recognized courier for overnight delivery to the address specified in the Exercise Notice, a certificate, registered in the name of the Holder or its permitted
designee, for the number of shares of Common Stock to which the Holder is entitled. Upon delivery of the Exercise Notice and the Payment (the “Exercise Date”), the Holder shall be deemed for all corporate purposes to have
become the holder of record of the Warrant Shares with respect to which this Warrant has been exercised on the Delivery Date, irrespective of the date of delivery of the certificates evidencing such Warrant Shares. 

(d) In lieu of or in addition to exercising this Warrant and making the Payment in cash or by wire transfer pursuant to
Section 2(a)(ii)(A), the Holder may elect to make the Payment by means of receiving shares of Common Stock equal to the value of this Warrant (or portion thereof being exercised) by delivery and surrender of the Warrant together with the
Exercise Notice in accordance with the terms hereof, duly completed to indicate a net issuance exercise and executed by the Holder, in which event the Company shall issue to the Holder a number of shares of Common Stock computed using the following
formula: 
  
 

 
 where: 
  

	 	S	equals the number of shares of Common Stock to be issued as Warrant Shares to the Holder; 

 

	 	WS0	 means, as of any date, the number of Warrant Shares purchasable (or portion thereof) under this Warrant that are being exercised at the applicable date
of determination; 

  
 8 

	 	CEqV	 means, as of any date, the Fair Market Value per share of Common Stock on the Trading Day immediately preceding the Exercise Date (for the avoidance of
doubt, CEqV as used in this equation must equal CEqV used for purposes of determining the Exercise Price); and

  

	 	E	the Exercise Price on the Exercise Date. 

 (e) No fractional shares of Common Stock or scrip representing fractional shares of Common Stock shall be issued upon any exercise of this Warrant. In lieu of any fractional share of Common Stock to which
the Holder would otherwise be entitled, the Company shall issue a number of shares of Common Stock to Holder rounded up to the nearest whole number of shares of Common Stock. No cash shall be payable to any Holder upon exercise of the Warrant
Shares. 
 (f) This Warrant shall not be exercisable for any shares (and, for the avoidance of doubt, shall have no other value)
if, in accordance with, and solely to the extent and in the circumstances specifically provided in, the definition of “Exercise Price,” this Warrant is “deemed to have no value”. 

Section 3. Representations, Warranties, Covenants and Agreements. The Company hereby represents, warrants, covenants and agrees,
as applicable, as follows: 
 (a) This Warrant is, and any Warrants issued in substitution for or in replacement of this Warrant
upon issuance will be, duly authorized, executed and delivered. 
 (b) All shares of Common Stock issuable upon exercise of this
Warrant have been duly authorized and when issued upon such exercise will be validly issued, fully paid and nonassessable and free from all taxes, liens and charges with respect to the issue thereof. 

(c) As long as this Warrant may be exercised, the Company will at all times have authorized and reserved for issuance and delivery upon
exercise of this Warrant at least the number of shares of Common Stock needed to provide for the exercise in full of the rights then represented by this Warrant. 
 (d) The Company will use its reasonable best efforts to ensure that the Common Stock may be issued without violation of any law or regulation applicable to the Company or of any requirement of any
securities exchange applicable to the Company on which the shares of Common Stock are listed or traded. 
 Section 4. Warrant
Holder Not Deemed a Stockholder. Nothing contained in this Warrant shall be construed to (a) grant the Holder any rights to vote or receive dividends or be deemed the holder of shares of the Company for any purpose, (b) confer upon the
Holder any of the rights of a stockholder of the Company or any right to vote, give or withhold consent to any corporate action (whether any reorganization, issue of stock, reclassification of stock, consolidation, merger, conveyance or otherwise),
receive notice of meetings, receive dividends or subscription rights, or otherwise, or (c) impose any liabilities on the Holder to purchase any securities or as a stockholder of the Company, whether asserted by the Company or creditors of the
Company, prior to the exercise hereof. 

  
 9 

 Section 5. Representations of Holder. The Holder, by the acceptance hereof,
represents that it is acquiring this Warrant and the Warrant Shares for its own account for investment only and not with a view towards, or for resale in connection with, the public sale or distribution of this Warrant or the Warrant Shares, except
pursuant to sales registered or exempted under the Securities Act. Upon exercise of this Warrant, the Holder shall, if requested by the Company, confirm in writing, in a form satisfactory to the Company, that the Warrant Shares are being acquired
solely for the Holder’s own account and not as a nominee for any other party, for investment, and not with a view toward distribution or resale. If Holder cannot make such representations because they would be factually incorrect, it shall be a
condition to Holder’s exercise of this Warrant that the Company receives such other representations as the Company considers reasonably necessary to assure the Company that the issuance of its securities upon exercise of this Warrant shall not
violate any federal or state securities laws. The Company shall not be penalized or disadvantaged by the Holder’s inability to exercise this Warrant due to its inability to make the required representations in connection with the exercise of
this Warrant. 
 Section 6. Ownership and Transfer. 

(a) (a) This Warrant, and any shares of Common Stock issued upon exercise of this Warrant, may be offered, sold, transferred or assigned
by any Holder to a transferee in a Permitted Transfer. Subject to this Section 6, during the Restrictive Period, this Warrant, and any shares of Common Stock issued upon exercise of this Warrant, may not be offered, sold, transferred or
assigned by any Holder except pursuant to a Permitted Transfer. As used herein, the “Restrictive Period” shall mean the period commencing on the Original Issuance Date and ending upon the earliest of (A) the three-year anniversary of
the Original Issuance Date, (B) a Qualified Public Offering and (C) an Event of Default. 
 (b) To the extent the
Restrictive Period ends by reason of the occurrence of the three-year anniversary of the Original Issuance Date as provided in clause (i) of the definition thereof, and neither a Qualified Public Offering nor an Event of Default has occurred,
this Warrant, and any shares of Common Stock issued upon exercise of this Warrant, may only be offered, sold, transferred or assigned by any Holder with the prior written consent of the Company, such consent not to be unreasonably withheld,
conditioned or delayed, or pursuant to a Permitted Transfer. 
 (c) All offers, sales, transfers and assignments of this
Warrant, or any shares of Common Stock issued upon exercise of this Warrant must also be made in accordance with the Securities Act, and applicable state securities laws. Any attempted transfer of this Warrant, or any shares of Common Stock issued
upon exercise of this Warrant, in violation of this Section 6 shall be null and void ab initio. 
 (d)
Subject to Section 6(a), upon surrender of this Warrant to the Company, together with instructions by the applicable Holder that all or a portion of this Warrant be assigned, the Company shall, without charge, execute and deliver a new
Warrant in the name of the assignee or assignees named in such instrument of assignment and, if the applicable Holder’s entire interest is not being assigned, in the name of the Holder and this Warrant shall promptly be canceled. All expenses
(other than stock transfer taxes) and other charges payable in connection with the preparation, execution and delivery of the new Warrants pursuant to this Section 6(b) shall be paid by the Company. 

  
 10 

 (e) Issuance of certificates for Warrant Shares (or other securities) to the Holder upon
exercise of this Warrant shall be made without charge to the Holder for any issue or transfer tax or other incidental expense in respect of the issuance of such certificates, all of which taxes and expenses shall be paid by the Company. 

(f) The Company shall maintain a registry showing the name and address of the Holder as the registered holder of this Warrant, and the
Company shall be entitled to rely in all respects, prior to written notice to the contrary, upon such registry. This Warrant is exchangeable, upon the surrender hereof by the Holder to the Company, for a new Warrant or Warrants of like tenor and
representing the right to purchase the same aggregate number of Warrant Shares. 
 Section 7. Adjustment of Number of Warrant
Shares. 
 (a) In the event of any issuance of Common Stock as a dividend or distribution to all holders of Common Stock, or
a subdivision, split, combination or reclassification of the outstanding shares of Common Stock into a greater or smaller number of shares, the number of Warrant Shares for which this Warrant is exercisable shall be adjusted pursuant to the
following formula: 
  
 

 
 where: 
  

					
			
	WS	  	=	  	the number of Warrant Shares for which this Warrant is exercisable immediately after the Open of Business on the Ex-Date for such dividend or distribution, or immediately after
the Open of Business on the effective date for such subdivision, combination or reclassification, as the case may be;
			
	WS0	  	=	  	the number of Warrant Shares for which this Warrant is exercisable immediately prior to the Open of Business on the Ex-Date for such dividend or distribution, or immediately
prior to the Open of Business on the effective date for such subdivision, combination or reclassification, as the case may be;
			
	N0	  	=	  	the number of shares of Common Stock outstanding immediately prior to the Open of Business on the Ex-Date for such dividend or distribution, or immediately prior to the Open of
Business on the effective date for such subdivision, combination or reclassification, as the case may be; and
			
	N1	  	=	  	the number of shares of Common Stock equal to (i) in the case of a dividend or distribution, the sum of (A) the number of shares outstanding immediately prior to the
Open of Business on the Ex-Date for such dividend or distribution plus (B) the total number of shares issued pursuant to such dividend or distribution or (ii) in the case of a subdivision, combination or reclassification, the number of
shares outstanding immediately after such subdivision, combination or reclassification.

  
 11 

 Such adjustment shall become effective (i) in the case of a dividend or distribution,
immediately after the Open of Business on the Ex-Date for such dividend or distribution or (ii) in the case of a subdivision, split, combination or reclassification, immediately after the Open of Business on the effective date for such
subdivision, split, combination or reclassification. If any dividend or distribution or subdivision, split, combination or reclassification of the type described in this Section 7(a) is declared or announced but not made, the number of
Warrant Shares for which this Warrant is exercisable shall again be adjusted to the number of Warrant Shares that would then be in effect if such dividend or distribution or subdivision, split, combination or reclassification had not been declared
or announced, as the case may be. 
 (b) In the event of (w) any or a subdivision, split, combination or reclassification
of the outstanding shares of Common Stock, (x) any declaration or making of a dividend or other distribution to holders of Common Stock, (y) the dissolution, liquidation or winding up of the Company, or (z) the entry into, or
commitment by the Company to effect, any event described in clauses (a) or (b) of Section 8 (including a Change of Control), then the Company shall file with its corporate records and mail to the Holder at its last address as
shown on the records of the Company, at least ten (10) days prior to the record or other date specified below, a notice stating: 
 (i) the record date of such split, dividend or other distribution, or, if a record is not to be taken, the date as of which the holders of Common Stock of record to be entitled to such subdivision, split,
combination or reclassification, dividend or other distribution are to be determined; or 
 (ii) the date on
which such subdivision, reclassification, liquidation, dissolution, winding up, combination, event, transaction or Change of Control, is estimated to become effective, and the date as of which it is expected that holders of Common Stock of record
will be entitled to exchange their shares of Common Stock for the capital stock, other securities or other property (including but not limited to cash and evidences of indebtedness) deliverable upon such subdivision, reclassification, liquidation,
dissolution, winding up, combination, event, transaction or Change of Control. 
 (c) Upon the occurrence of each adjustment or
readjustment of the number of Warrant Shares pursuant to this Section 7, the Company at its expense shall promptly as reasonably practicable compute such adjustment or readjustment in accordance with the terms hereof and furnish to each
Holder a certificate, signed by an executive officer of the Company, setting forth such adjustment or readjustment and showing in detail the facts upon which such adjustment or readjustment is based and shall file a copy of such certificate with its
corporate records. The Company shall, upon the reasonable written request of any Holder, furnish to such Holder a similar certificate setting forth (i) the calculation of such adjustments and readjustments in reasonable detail and (ii) the
number of shares of Common Stock and the amount, if any, of capital stock, other securities or other property (including but not limited to cash and evidences of indebtedness) which then would be received upon the exercise of this Warrant.

 Section 8. Purchase Rights; Reorganization, Reclassification, Consolidation, Merger or Sale. Upon the consummation of
any (a) sale of all or substantially all of the Company’s assets to an acquiring Person or (b) other Change of Control following which the Company is not a surviving entity, the Company will secure from the Person purchasing the
assets or the successor 

  
 12 

 
resulting from the Change of Control (in each case, the “Acquiring Entity”) a written agreement to deliver to the Holder, in exchange for this Warrant, a security of the
Acquiring Entity evidenced by a written instrument substantially similar in form and substance to this Warrant and reasonably satisfactory to the Holder. Prior to the consummation of any other Change of Control, the Company shall make appropriate
provision to insure that the Holder will thereafter have the right to acquire and receive, in lieu of the shares of Common Stock immediately theretofore acquirable and receivable upon the exercise of this Warrant, such shares of stock, securities or
assets that would have been issued or payable in the Change of Control with respect to or in exchange for the number of Warrant Shares that would have been acquirable as of the date of the Change of Control. 

Section 9. Lost, Stolen, Mutilated or Destroyed Warrant. If this Warrant is lost, stolen, mutilated or destroyed, the Company
shall promptly, on receipt of an indemnification undertaking reasonably satisfactory to the Company (or, in the case of a mutilated Warrant, the Warrant), issue a new Warrant of like denomination and tenor as this Warrant so lost, stolen, mutilated
or destroyed. 
 Section 10. Notice. Any notices, consents, waivers or other communications required or permitted to be
given under the terms of this Warrant must be in writing and will be deemed to have been delivered: (i) upon receipt, when delivered personally; (ii) upon receipt, when sent by fax (provided confirmation of transmission is mechanically or
electronically generated and kept on file by the sending party); or (iii) one (1) Business Day after deposit with a nationally recognized overnight delivery service, in each case properly addressed to the party to receive the same. The
addresses, fax numbers and email addresses for communications shall be: 
 If to the Company: 

Lighting Science Group Corporation 
 1227 South Patrick Drive 
 Building 2A 

Satellite Beach, FL 32937 
 Attention: Gregory T. Kaiser, Chief Financial Officer 
 Fax: (321) 779-5521

 With a copy (which shall not constitute notice or constructive notice) to: 

Haynes and Boone, LLP 
 2323 Victory Avenue, Suite 700 
 Dallas, TX 75219 

Attention: Greg R. Samuel, Esq. 
 Fax: (214) 200-0577 
 If to the Holder: 

 
  
  

 
  

  
 13 

 With a copy (which shall not constitute notice or constructive notice) to: 

 
  
  

 
  
 Each party
shall provide five (5) days’ prior written notice to the other party of any change in address or fax number or email address. Written confirmation of receipt (A) given by the recipient of any notice, consent, waiver or other
communication, (B) mechanically or electronically generated by the sender’s fax machine or computer containing the time, date, recipient fax number or email address and an image of the first page of the fax transmission or the content of
the email, or (C) provided by a nationally recognized overnight delivery service, shall be rebuttable evidence of receipt. 

Section 11. Amendment and Waiver. This Warrant may not be modified or amended except pursuant to an instrument in writing signed
by the Company and the Holder. No provision hereunder may be waived other than in a written instrument executed by the waiving party. No failure or delay by either party in exercising any right, power or privilege hereunder shall operate as a waiver
thereof nor shall any single or partial exercise thereof preclude any other or further exercise thereof or the exercise of any other right, power or privilege. The rights and remedies herein provided shall be cumulative and not exclusive of any
rights or remedies provided by law. 
 Section 12. Governing Law. This Warrant shall be construed and enforced in
accordance with, and all questions concerning the construction, validity, interpretation and performance of this Warrant shall be governed by, the internal laws of the State of New York, without giving effect to any choice of law or conflict of law
provision or rule (whether of the State of New York or any other jurisdictions) that would cause the application of the laws of any jurisdictions other than the State of New York. 

Section 13. Restrictive Legends. At all times this Warrant, and until such time as a registration statement has been declared
effective by the U.S. Securities and Exchange Commission or the Warrant Shares may be sold pursuant to Rule 144 under the Securities Act without any restriction as to the number of securities that can then be immediately sold, certificates for any
Warrant Shares will, in addition to any legend required under applicable securities law, bear a restrictive legend substantially in the form set forth on the first page of this Warrant. 

Section 14. Binding Effect. This Warrant shall be binding upon any successors or assigns of the Company. 

Section 15. Entire Agreement. This Warrant and the Support Services Agreement entered into between the Company and Holder and
dated as of the Original Issuance Date (and the other documents referenced therein), contain the entire agreement between the parties with respect to the subject matter hereof and supersede all prior and contemporaneous arrangement or undertakings
with respect thereto. 
 *    *    *    *    *

  
 14 

 IN WITNESS WHEREOF, the Company has caused this Warrant to be signed as of June 15, 2012.

  

			
	LIGHTING SCIENCE GROUP CORPORATION
		
	By:	 	 
	Name:	 	Gregory T. Kaiser
	Title:	 	Chief Financial Officer

 [Signature Page to Warrant] 

 Agreed and Acknowledged on June 15, 2012. 

 

			
	HOLDER 
		
	By:	 	 
		 	Name:
		 	Title:

  

  
 16 

 Exhibit A To Warrant 

LIGHTING SCIENCE GROUP CORPORATION 
 EXERCISE NOTICE 
 TO BE EXECUTED BY THE REGISTERED HOLDER 

TO EXERCISE THIS WARRANT 
 The undersigned holder hereby exercises the right to purchase                      shares of Common
Stock (“Warrant Shares”) of Lighting Science Group Corporation, a Delaware corporation (the “Company”), evidenced by the attached Warrant (the “Warrant”). Capitalized terms used herein and not
otherwise defined shall have the respective meanings set forth in the Warrant. 
 1. Payment of Exercise Price (check
applicable box). 
 Payment in the sum of
$                     is enclosed in accordance with the terms of the Warrant. 

Payment in the sum of
$                     has been wire transferred to the Company at the following account:
                                        in
accordance with the terms of the Warrant. 
 Holder hereby elects to make the Payment for the Warrant Shares in accordance with
Section 2(d) of the Warrant. 
 2. Delivery of Warrant Shares. The Company shall deliver the Warrant Shares
in the name of the undersigned or in such other name as is specified below in accordance with Section 2(c) of the Warrant at the following address: 

			
		
		 	 
		
		 	 
		
		 	 

 Date:
                    ,          

 

			
		
	By:	 	 
		 	Name:
		 	Title:

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