Document:

Graham Packaging Company Inc. Annual Incentive Plan

 Exhibit 10.48 
 GRAHAM PACKAGING COMPANY INC. 
 ANNUAL INCENTIVE
PLAN 
 The Annual Incentive Plan (the “Program”) provides incentive compensation opportunity commensurate with
the performance of Graham Packaging Company Inc. (the “Company” or “Graham Packaging”) and its Affiliates and with each eligible employee’s contribution to that success, linking the individual interests of employees to those
of Company stockholders and by providing such individuals with an incentive for outstanding performance to generate superior returns to Company stockholders. The objectives of the Program are to: (i) reinforce among all eligible employees the
importance of their individual and collective contributions to Graham Packaging’s continued success; (ii) encourage initiative, creativity, and sound judgment among eligible employees in all business decisions and in the day-to-day
execution of their jobs; (iii) provide total compensation that is higher than competitive median levels when aggressive performance goals are exceeded; and (iv) encourage teamwork and improve Graham Packaging’s overall return on
investment. For purpose of this Program, the term “Affiliate” means with respect to the Company, any entity directly or indirectly controlling, controlled by, or under common control with, the Company or any other entity designated by the
Board of Director of the Company (the “Board”) in which the Company or an Affiliate has an interest. 
 I. Administration

 The Program shall be administered by an Incentive Plan Committee (the “Committee”) comprised of the
Company’s Chief Executive Officer; Company’s Chief Financial Officer; and the Company’s Chief Human Resources Officer. The Committee may establish any component plan consistent with the terms of this Program and delegate its authority
under this Program to an appropriate officer of the Company or any Affiliate. The Committee shall set financial and operational performance goals, determines the minimum, target, and maximum levels of acceptable performance for each of these goals,
and determines employee eligibility requirements and relative target bonus opportunities. 
 The Company and the Committee each
have the right to amend, modify or terminate this Program or any component plan at any time and for any reason. The Committee has the right to determine questions of eligibility and bonus calculations, to authorize payments under the Program, and to
construe and interpret the provisions of the Program and any component plan. Benefits shall be payable under the Program or a component plan only if the Committee determines in its sole discretion that the claimant is entitled to them. Decisions
made by the Committee shall be final, binding and conclusive on all parties. All costs and expenses incurred in the administration of this program are borne by Graham Packaging. 
 Except as otherwise provided herein, the Committee may make appropriate upward or downward adjustments of bonus awards if, after taking into
consideration all of the facts and circumstances of the performance period, it determines that adjustments are warranted. For example, in the event that during the incentive year, a business unit or a significant portion of the Company is affected
by the sale of a significant portion of its business or the acquisition of a new business, and such sale or purchase has been completed or is in the final stages of completion, or in the event of other significant financial events, the Committee has
the option in its sole discretion to pay bonuses to affected eligible employees to the extent deemed necessary and appropriate to recognize employee performance. 

 Without limiting the generality of the foregoing, to the extent applicable, notwithstanding
anything herein to the contrary, this Program, any component plan and the awards pursuant hereunder shall be interpreted in accordance with Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”) and Department of
Treasury regulations and other interpretative guidance issued thereunder, including without limitation any such regulations or other guidance that may be issued. Notwithstanding any provision of the Program or a component plan to the contrary, in
the event that the Committee determines that any amounts payable under the Program or a component plan will be taxable to an eligible employee under Section 409A of the Code and related Department of Treasury guidance prior to payment to such
eligible employee of such amount, the Company may (a) adopt such amendments to the Program or applicable component plan and appropriate policies and procedures, including amendments and policies with retroactive effect, that the Committee
determines necessary or appropriate to preserve the intended tax treatment of the benefits provided by the Program or component plan, and/or (b) take such other actions as the Committee determines necessary or appropriate to avoid the
imposition of an additional tax under Section 409A of the Code. 
 II. Eligibility 
 Except as otherwise determined by the Committee, each employee of the Company or any Affiliate in the following categories shall be eligible
to participate in the Program: (i) employees with the title of Vice President or Director (salaried exempt corporate employees at pay grades 19 through 21); (ii) plant managers; (iii) exempt corporate employees at pay grades 12
through 18; and (iv) certain employees in South America and certain employees in Europe who have a performance appraisal rating of “meets job requirements” or higher, as further described below. 
 A newly eligible employee who is a new hire or whose eligibility is due to promotion during the performance period
(“newly eligible employee”) shall have his or her award, if any, prorated based on the number of full months remaining in the performance period after his or her hire date or promotion. However, newly eligible employees hired or promoted
after September 30th of any calendar year who have
not previously participated in a Company incentive plan during such calendar year shall not be given bonus consideration for the year of hire or promotion, as applicable. 
 In the event that a currently eligible employee is transferred or promoted, the employee’s bonus shall be calculated by reference to the applicable performance factors during the period that the
employee holds each assignment. 
 In the event that an eligible employee dies or retires during a performance period, such
individual or individual’s estate shall be eligible to receive a prorated bonus based on the number of full months during the period of his employment during the year. 
 III. The Awards 
 Unless otherwise determined by the Committee, each
eligible employee shall be assigned a target award opportunity based on pay, job responsibilities and the employee’s ability to impact the organization. The target award opportunity shall be expressed as a percentage of the eligible
employee’s base compensation. Bonus payments at above (or below) target levels may be paid in the event performance exceeds (or falls short of) goals. Performance criteria focus on the achievement of established and documented strategic goals.
Performance targets may include measures of corporate financial and operating performance, defined group objectives or individual performance objectives. Each particular performance target will be assigned weighting reflected as a percentage of
compensation objectives. 
  

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 Any bonus payable under the Program will be calculated based on each employee’s base
compensation measured as of December 31 of the applicable year; provided, that the base compensation of any eligible employee who dies or retires during the performance period shall be measured as of the date of termination. 
 The Committee may also make discretionary awards in its sole discretion. In addition, the CEO in his sole discretion may make discretionary
awards. based on extraordinary individual efforts of employees. 
 Awards earned under the Program are calculated on a calendar
year basis and paid as a single cash lump sum by the March 15th immediately following the end of the performance period. Bonus payments under this Plan are intended to satisfy the short-term deferral exemption under Treas. Reg. Sec.
1.409A-1(b)(4). 
 IV. Covered Employees 
 Notwithstanding any provisions to the contrary herein, with respect to any eligible employee who may be a “covered employee” for purposes of Section 162(m) of the Code any award payable
under this Program or a component plan shall be intended to qualify as “performance-based compensation” as described in Section 162(m)(4)(C) of the Code for awards granted after the expiration of the Company’s reliance period
under Section 162(m). For purposes of awards that are intended to satisfy Section 162(m) of the Code, the Program and applicable component plan shall be administered by the Compensation Committee of the Board (the “Compensation
Committee”). Notwithstanding any other provisions of this Program, unless determined by the Compensation Committee that an award is not intended to satisfy Section 162(m) of the Code, all awards to covered employees subject to
Section 162(m) of the Code shall be made in accordance with this Section IV. 
 Any such bonuses paid to a covered employee
which are intended to be qualified performance-based compensation shall be based upon objectively determinable bonus formulas established in accordance with the provisions of this Section IV. To the extent necessary to comply with the requirements
of Section 162(m)(4)(C) of the Code, with respect to any award intended to qualify as qualified performance-based compensation, no later than 90 days following the commencement of any performance period (or such earlier time as may be required
under Section 162(m) of the Code), the Compensation Committee shall, in writing, (a) designate which eligible employees are or may be covered employees, (b) select the performance criteria applicable to the performance period,
(c) establish the performance goals, and amounts of such awards, as applicable, which may be earned for such performance period based on the performance criteria, and (d) specify the relationship between performance criteria and the
performance goals and the amounts of such bonus awards, as applicable, to be earned by each covered employee for such performance period. Following the completion of each performance period, the Compensation Committee shall certify in writing
whether and the extent to which the applicable performance goals have been achieved for such performance period. In determining the amount earned under such bonus awards, the Compensation Committee shall have the right to reduce or eliminate (but
not to increase) the amount payable at a given level of performance to take into account additional factors that the Compensation Committee may deem relevant to, including the assessment of individual or corporate performance for the performance
period. 
 A covered employee shall be eligible to receive payment pursuant to this Section IV for a performance period only if
and to the extent the performance goals for such period are achieved. If a covered employee terminates employment due to death, the covered employee’s estate shall

  

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be eligible to receive a prorated bonus based on the number of full months during the period of his or her employment during the year. Any covered employee who terminates employment, for reasons
other than death, prior to the end of the performance period shall be eligible for a prorated payment based upon the achievement of the performance criteria and the number of full months during the period of his or her employment during the year.

 In addition, notwithstanding any other provision of the Program, any bonus award which is granted to an eligible employee and
is intended to qualify as qualified performance-based compensation shall be subject to any additional limitations set forth in Section 162(m) of the Code or any regulations or rulings issued thereunder that are requirements for qualification as
qualified performance-based compensation, and the Program shall be deemed amended to the extent necessary to conform to such requirements. 
 For purposes of qualified performance-based bonus awards for covered employees, “performance criteria” shall mean the criteria (and adjustments) that the Compensation Committee selects for a
bonus award for purposes of establishing the performance goal or performance goals for a performance period. The performance criteria that shall be used to establish performance goals under this Section IV are limited to the following: (i) net
earnings (either before or after one or more of the following: (A) interest, (B) taxes, (C) depreciation and (D) amortization), (ii) gross or net sales or revenue, (iii) net income (either before or after taxes),
(iv) operating earnings or profit, (v) cash flow (including, but not limited to, operating cash flow and free cash flow), (vi) return on assets, (vii) return on capital, (viii) return on stockholders’ equity,
(ix) return on sales, (x) gross or net profit or operating margin, (xi) costs, (xii) funds from operations, (xiii) expenses, (xiv) working capital, (xv) earnings per share, (xvi) price per share of Company
common stock, (xvii) regulatory body approval for commercialization of a product, (xviii) implementation or completion of critical projects, (xix) market share, any of which may be measured either in absolute terms or as compared to
any incremental increase or decrease or as compared to results of a peer group or to market performance indicators or indices, (xx) capital expenditures, (xxi) specific productivity and (xxii) attainment of certain levels of accounts
receivable and inventory. 
 The Compensation Committee may, in its sole discretion, provide that one or more objectively
determinable adjustments shall be made to one or more of the performance goals. Such adjustments may include one or more of the following: (i) items related to a change in accounting principle; (ii) items relating to financing activities;
(iii) expenses for restructuring or productivity initiatives; (iv) other non-operating items; (v) items related to acquisitions; (vi) items attributable to the business operations of any entity acquired by the Company during the
performance period; (vii) items related to the disposal of a business or segment of a business; (viii) items related to discontinued operations that do not qualify as a segment of a business under applicable accounting standards;
(ix) items attributable to any stock dividend, stock split, combination or exchange of Company stock occurring during the performance period; or (x) any other items of significant income or expense which are determined to be appropriate
adjustments; (xi) items relating to unusual or extraordinary corporate transactions, events or developments, (xii) items related to amortization of acquired intangible assets; (xiii) items that are outside the scope of the
Company’s core, on-going business activities; or (xiv) items relating to any other unusual or nonrecurring events or changes in applicable laws, accounting principles or business conditions. For all bonus awards intended to qualify as
qualified performance-based compensation, such determinations shall be made within the time prescribed by, and otherwise in compliance with, Section 162(m) of the Code. 
 “Performance goals” for purposes of this Section IV shall mean, for a performance period, one or more goals established in writing
by the Compensation Committee for the performance period based upon one or more performance criteria. Depending on the performance criteria used to establish such performance goals, the performance goals may be expressed in terms of overall Company
performance or the performance of a division, business unit, or an individual. The achievement of each performance goal shall be determined in accordance with applicable accounting standards. 
  

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 V. No Right to Employment or Awards 
 Participation in the Program or a component plan shall impose no obligation on the Company or any of its affiliate to continue the employment
of an eligible employee and shall not lessen or affect the Company’s or any of its Affiliate’s right to terminate the employment of any eligible employee. No eligible employee or other person shall have any claim to be granted any award
under the Program or a component plan, and there is no obligation for uniformity of treatment of eligible employees. The terms and conditions of awards under the Program or a component plan and the Committee’s determinations and interpretations
with respect thereto need not be the same with respect to each eligible employee (whether or not such eligible employees are similarly situated). 
 VI. Successors and Assigns 
 The Program shall be binding on all successors and assigns of the Company.

 VII. Non-transferability of Awards 
 Unless otherwise determined by the Committee, no awards under the Program or a component plan shall be transferable or assignable by an eligible employee. 
 VIII. International Participants 
 With respect to eligible employees who reside or work outside the United States of America and who are not (and who are not expected to be) “covered employees” within the meaning of
Section 162(m) of the Code, the Committee may, in its sole discretion, amend the terms of the Program or a component plan with respect to such eligible employee in order to conform such terms with the requirements of local law or to obtain more
favorable tax or other treatment for a Participant, the Company or an Affiliate. 
 IX. Choice of Law 
 The Program shall be governed by and construed in accordance with the laws of the State of Delaware without regard to conflicts of laws.

 X. Effectiveness of the Program 
 The Program shall be effective as of January 1, 2009. 
  

 - 5 -Form of Transaction Bonus and Release Agreement

 Exhibit 10.49 
 FORM OF GRAHAM PACKAGING HOLDINGS COMPANY 
 &

 GRAHAM PACKAGING COMPANY, L.P. 
 TRANSACTION BONUS AND RELEASE AGREEMENT 
 TRANSACTION BONUS AND RELEASE
AGREEMENT dated as                     , 2010 and effective as of
                    , (the “Agreement”) between Graham Packaging Holdings Company (“Holdings”), Graham Packaging Company, L.P., a
Delaware Limited Partnership (“Limited Partnership”, or “L.P.” or “Company”), and Warren D. Knowlton (“Executive”). 
 WHEREAS, in consideration of (i) the Executive’s efforts which ultimately resulted in facilitating the initial public offering by Graham Packaging Company Inc. (the “Issuer”),
(ii) an extension of the Executive’s post-termination restrictive covenants, and (iii) a release of all claims against the Company, Holdings and the Issuer by the Executive, the Company desires to provide to the Executive an IPO
Transaction Bonus and Option Exercise Extension upon the terms and conditions set forth herein. 
 NOW, THEREFORE, in
consideration of the promises and the mutual agreements contained herein, the Company and the Executive hereby agree as follows: 
 ARTICLE 1 
 DEFINITIONS 
 1.01 Affiliate. “Affiliate” means any Person directly or indirectly controlling, controlled by, or under direct or indirect common control with the Company and/or the Issuer, as
applicable. For the purposes of this definition, the term “control” when used with respect to any Person means the power to direct or cause the direction of management or policies of such Person, directly or indirectly, whether through the
ownership of voting securities, by contract or otherwise. 
 1.02 Common Stock. “Common Stock” shall mean the
common stock, $0.01 par value, of the Issuer. 
 1.03 Employment Agreement. “Employment Agreement” means the
Employment Agreement effective December 4, 2006, among Holdings, the Company and Knowlton, as amended. 
 1.04 IPO.
“IPO” shall mean the initial public offering and sale of shares of the Issuer’s common stock, $0.01 par value, pursuant to a registration statement (file number 333-163956) on Form S-1 for registration under the Securities Act of
1933, as amended (the “Act”). 
 1.05 IPO Effective Date. “IPO Effective Date” means the first date
the Issuer offers and sells its common stock pursuant to a From S-1 registration statement. 
 1.06 IPO Transaction
Bonus. “IPO Transaction Bonus” means the amount payable under this Agreement to the Executive upon the satisfaction of the conditions set forth herein. 

 1.07 Option Agreement. “Option Agreements” means the Option Agreement
effective December 4, 2006 between the Company and the Executive. 
 1.08 Option Exercise Extension. “Option
Exercise Extension” means the 120 day period after the expiration of the post-employment option exercise period in the Option Agreement. 
 1.09 Vested Option. “Vested Option” means the Executive’s vested right to purchase 894,538 shares of common shares of the Issuer pursuant to the Option Agreement. 
 ARTICLE 2 
 TRANSACTION BONUS & OPTION EXTENSION 
 2.01 IPO Transaction Bonus. In the event that an IPO
occurs on or before March 30, 2010, the Company shall pay Executive an IPO Transaction Bonus equal to seven hundred fifty thousand dollars ($750,000). 
 2.02 Payment and Distribution of the IPO Transaction. The Executive’s IPO Transaction Bonus shall be paid to the Executive within 30 days following the IPO Effective Date but in no event
before the 7-day revocation period described in Section 3.02B below expires without revocation. 
 2.03 Option Exercise
Extension. Section 7(a) of the Option Agreement shall be deleted and replaced with the following to reflect the Option Exercise Extension as follows” 
 “After Optionee’s termination of employment for any reason, all unvested Options will be forfeited immediately, and all vested options shall remain exercisable until the lesser of (i) two
hundred and forty (240) days following the Optionee’s date of termination or (ii) the remaining term of the Option; or” 
 2.04 Other Compensation. The IPO Transaction Bonus shall not be deemed to be compensation, bonus, or earnings for purposes of calculating any other payment or benefit from the Company or its
Affiliates, including, without limitation, severance of any kind. 
 ARTICLE 3 
 EXECUTIVE OBLIGATIONS 
 3.01 Post-Termination Limitations. The term “Restricted Period” as defined in Section 1.39 of the Employment Agreement shall be deleted and replaced with the following: 

“Restricted Period” means the period from Executive’s Termination of Employment through December 31, 2013.

 3.02 Release of Claims. 

 A. In consideration of receiving from the Company the payments and benefits provided for in
this Agreement, certain of which payments and benefits you may not have otherwise been entitled to receive, you, and your heirs, successors, executors and administrators, intending to be legally bound, permanently and irrevocable agree that your
employment will terminate on the Termination Date and to unconditionally release and discharge the Company and any individual or organization related to the Company against whom or which you, your heirs, successors, executors or administrators could
assert a claim or whom may be held jointly and severally liable with the Company, including its present, past and future parent, subsidiary and affiliated companies, including, but not limited to Graham Packing Company Inc., principals, partners,
joint ventures, directors, officers, employees, stockholders, attorneys, agents, and successors and assigns from any and all claims, causes of action, suits, debts, demands, lawsuits or other charges whatsoever, known or unknown, directly and
indirectly up until the date of this Agreement including, without limitation, any claims under any employee benefit plans of the Company or its affiliates, except for (i) any right to elect continuation healthcare coverage under COBRA at your
expense, or (ii) any claims for vested benefit plans, including but not limited to retirement, pension or health insurance plans. The claims or actions released herein include, but are not limited to, those based upon your employment and the
termination of such employment, including all claims in law, equity, contract, tort, allegations of wrongful discharge, breach of contract, promissory estoppels, defamation, infliction of emotional distress, and those alleging discrimination on the
basis of race, color, sex, religion, national origin, age, disability, or any other basis, including, but not limited to, any claim or action under Title VII of the Civil Rights Act of 1964, the Age Discrimination in Employment Act of 1967, the
Rehabilitation Act of 1973, the Americans with Disabilities Act of 1990, the Equal Pay Act of 1963, the Civil Rights Act of 1991, the Employee Retirement Income Security Act of 1974, Executive Order 11246 relating to Federal affirmative action
requirements, the Family Medical Leave Act, the Fair Labor Standards Act, the Labor Management Relations Act, the National Labor Relations Act, the Equal Pay Act, the Worker Adjustment Retraining and Notification Act, the Pennsylvania Human
Relations Act or any other federal, state, or local law, rule, ordinance, or regulation as presently enacted or adopted and as each may hereafter be amended. You agree that should any other person, organization, or other entity file, charge, claim,
sue, or cause or permit to be filed any civil action, suit or legal proceeding involving any matter occurring at any time in the past, up to and including the date of this Agreement, you will not seek or accept any individual monetary or economic
recovery or equitable relief in such civil action, suit or legal proceeding. This release does not give up your rights, if any, to any rights or claims which cannot legally be waived by this Agreement, including without limitation, unemployment
compensation claims, workers’ compensation claims or the ability to file certain administrative claims. 
 B. With respect
to any claim that Executive might have under the Age Discrimination in Employment Act of 1967, as amended, Executive acknowledges the following: (i) the waiver of any rights or claims under the Age Discrimination in Employment Act of 1967 is in
exchange for the consideration reflected in this Agreement; (ii) the Executive is not waiving rights or claims that may arise after the date of this Agreement; and (iii) the Executive has been advised by this written Agreement to consult
with an attorney prior to executing this Agreement. The Executive also acknowledges that he has been given a period of at least twenty-one (21) days within which to consider this Agreement. At Executive’s option and sole discretion,
Execute may waive the twenty-one (21) day review period and execute this Agreement before the expiration date of twenty-one (21) days if given a reasonable period of time within which to consider this Agreement and Executive’s waiver
is made freely and voluntarily, without duress or any coercion by any other person. Executive and the Company agree that the Executive shall

 
have a period of seven (7) days following the execution of this Agreement within which to revoke this Agreement. 
 C. The Company’s offer to executive under this Agreement and the payments and benefits set forth herein is not intended to, and shall
not be construed as, any admission of liability to Executive of any improper conduct on the part of the Company, all of which the Company specifically denies. Except as otherwise provided herein, Executive acknowledges that upon payment of the
amounts and benefits set forth herein, the Company will have satisfied any and all obligations owed to the Executive other than those set forth in the Employment Agreement. Executive certifies that the following: (i) Executive has read the
terms of this Agreement, (ii) Executive has been advised in writing to consult with an attorney of his own choice prior to executing this Agreement, (iii) Executive had an opportunity to do so, (iv) Executive understand this
Agreement’s terms and effects, (v) Executive has in fact been advised by counsel of his own choosing, and (vi) Executive is satisfied with the representation provided by his counsel. Executive further certifies that neither the
Company, nor any representative of the Company, has made any representations to you concerning this Agreement other than those contained herein. Executive further acknowledge that the terms and language of this Section 3.02 of the Agreement
were the result of negotiations with the Company and, as a result, there shall be no presumption that any ambiguities in this Agreement shall be resolved against any particular party. Any controversy over construction of this Agreement shall be
decided without regard to events of authorship or negotiation. 
 D. If any provision of this Section 3.02 of the Agreement
or the application of any such provision (or any portion thereof) to any person or circumstance shall be held invalid, illegal or unenforceable in any respect by a court of competent jurisdiction, such invalidity, illegality or unenforceability
shall not affect any other provision hereof (or the remaining portion thereof) or the application of such provision to any other persons or circumstances. 
 3.03 Lock-up. Executive promises to execute a lock up agreement (restricting his ability to sell any shares in the Issuer that he may own now or in the future) in substantially the form prescribed
by the underwriters of the IPO and attached hereto on Exhibit A 
 ARTICLE 4 
 MISCELLANEOUS 
 4.01 Amendment. This Agreement may not be amended, suspended, discontinued or terminated at any time without the written consent of all of the parties hereto. 
 4.02 No Limitation on Company Actions. Nothing contained in the Agreement shall be construed to prevent Company from taking any
action that is deemed by it to be appropriate or in its best interest. Neither the Executive nor any other person shall have any claim against Company as a result of such action. 
 4.03 Obligations to Company. If the Executive becomes entitled to a distribution of benefits under this Agreement, and if at such
time the Executive has outstanding any debt, obligation, or other liability representing an amount owing to Company, then Company may offset such amount owed to it against the amount of benefits otherwise distributable. Such determination shall be
made by the Company. 

 4.04 Nonalienation of Benefits. Except as expressly provided herein, the Executive
shall not have the power or right to transfer, alienate, or otherwise encumber the Executive’s interest under the Agreement. 
 4.05 Protective Provisions. The Executive shall cooperate with Company by furnishing any and all information requested by Company in order to facilitate the payment of benefits hereunder. 
 4.06 Withholding Taxes. The Company may make such provisions and take such action as it deems necessary or appropriate for the
withholding of any taxes which Company is required by any law or regulation of any governmental authority, whether Federal, state or local, to withhold in connection with any benefits under the Agreement, including, but not limited to, the
withholding of appropriate sums from any amount otherwise payable to the Executive. The Executive, however, shall be responsible for the payment of all individual tax liabilities relating to any such benefits. 
 4.07 Severability. If any provision of this Agreement is held unenforceable, the remainder of the Agreement shall continue in full
force and effect without regard to such unenforceable provision and shall be applied as though the unenforceable provision were not contained in the Agreement. 
 4.08 Governing Law. This Agreement shall be construed in accordance with and governed by the laws of the Commonwealth of Pennsylvania, without reference to the principles of conflict of laws.

 4.09 Headings. Headings are inserted in this Agreement for convenience of reference only and are to be ignored in the
construction of the provisions of the Agreement . 
 4.10 Notice. Any notice or filing required or permitted to be given
to the Company under this Agreement shall be sufficient if in writing and hand delivered, or sent by registered or certified mail, to the Human Resources Department, or to such other entity as the Company may designate from time to time. Such notice
shall be deemed given as to the date of delivery, or, if delivery is made by mail, as of the date shown on the postmark on the receipt for registration or certification. 

 IN WITNESS WHEREOF, the parties have executed this Agreement on the date first above
written. 
  

	
	Graham Packaging Holdings Company
	
	  
	 Name:
 Title:

  

	
	Graham Packaging Company, L.P.
	
	  
	 Name:
 Title:

  

	
	Warren D. Knowlton
	
	  
	

 EXHIBIT A 
 [LOCK-UP AGREEMENT]

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