Document:

Supplemental Executive Retirement Plan

 Exhibit 10.1 
 Susquehanna Bancshares, Inc. 
 Supplemental Executive Retirement Plan

 (Amended and Restated, effective as of January 1, 2012) 

ARTICLE I. ESTABLISHMENT AND PURPOSE 
  

	1.	Establishment. The Company hereby adopts this Amendment and Restatement of the Susquehanna Bancshares, Inc. Supplemental Executive Retirement Plan (which
was previously amended and restated as of January 1, 2009) (the “Plan”) so as to continue and to enhance the supplemental retirement benefits available to the Company’s key executives identified by the Committee.

  

	2.	Restatement Concept. The benefit provided for under the Plan as herein amended and restated, in general, establishes a bookkeeping account (a “Plan
Account,” as defined below) for each Participant (other than those Participants whose benefits continued to be determined under the Plan as in effect prior to this Amendment and Restatement) effective as of January 1, 2012 that is equal to
the actuarial present value of the Participant’s accrued benefit under the Plan as in effect as of December 31, 2011, and increases the balance of that Plan Account as provided for herein. 

 

	3.	Purpose. The principal purposes of the Plan are to provide those of its key executives identified by the Committee with appropriate levels of retirement
benefits, consistent with the programs offered by similar employers, in order to enable the Company to recruit and retain officers and executives who are critical to the continued success of the Company. 

ARTICLE II. DEFINITIONS 
  

	1.	Actuarial Equivalence. Mortality shall be determined by reference to the RP-2000 table for annuitants as defined in Treasury Regulation
Section 417(e) including projected mortality improvements, with a blend of 50% male/50% female rates, and using an annual interest rate equal to 6%. This table shall be updated for mortality improvement annually as provided for under Treasury
Regulations promulgated pursuant to Section 417(e) of the Code Notwithstanding the foregoing, the Committee shall review these actuarial assumptions from time to time and may modify them, at the Committee’s discretion, as the Committee
deems necessary or appropriate without it being deemed a decrease in the accrued benefit. 

  

	2.	Annual Earnings Credit. “Annual Earnings Credit” means a designated percentage, as noted below, of the Participant’s calendar year Earnings while
employed by the Company minus Company paid contributions/credits to any other qualified or nonqualified pension or defined contribution plans during the calendar year for such Participant. Such designated percentage shall be:

  

	 	(a)	Tier 1 - 13% for those designated as Tier 1 by the Committee 

  

	 	(b)	Tier 2 - 10% for those designated as Tier 2 by the Committee. 

  
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 New participants shall be deemed to be Tier 2 if not otherwise designated. 

Earnings prior to any hire date or acquisition date are ignored (for example, Tower Bancorp earnings prior to the February 17, 2011
acquisition are ignored for purposes of determining the Annual Earnings Credit). Earnings paid after Separation from Service are also ignored unless specifically provided for in a Participant’s employment or other agreement or by the Committee.
If Annual Earnings Credit is provided for on the basis of earnings paid after Separation from Service, the amount of such credit shall be added to the Participant’s Plan Account as of the date of his or her Separation from Service
notwithstanding the fact that such post Separation from Service payments have not yet been made, except to the extent a contrary rule is expressly provided in the relevant employment or other agreement. 

Annual Earnings Credits are credited to Plan Accounts of active Participants on December 31 of each calendar year who have worked at
least 1,000 hours during the year. No Annual Earnings Credits are earned for Participants who are not active on December 31 or who have worked less than 1, 000 hours in the calendar year, unless the Participant has deceased or had reached
Normal Retirement Age or Early Retirement Age. Active Participants who decease while employed or have reached Normal Retirement Age or Early Retirement Age upon Separation from Service (other than for Cause) prior to December 31, shall be
eligible for an Annual Earnings Credit based on earnings for hours worked while employed by the Company. To the extent expressly provided for under the terms of a Participant’s employment agreement, additional Annual Earnings Credits may also
be added to a Participant’s Plan Account during active employment or after Separation from Service. 
 For purposes of
determining the Company 401(k) matching contributions, it is assumed the Participant qualifies for the maximum tax-qualified Company match subject to IRS limits, whether or not the Participant actually contributes to the 401(k) plan. 

Participant paid contributions to qualified or nonqualified plans are not reflected in the above calculations, and are not used to offset
Earnings Credits. 
  

	3.	Annual Interest Credits. Annual Interest Credits means an amount determined by multiplying the balance of a Participant’s Plan Account, determined as of the
first day of the calendar year, by the Annual Interest Credit Rate determined in effect for such calendar year and added to such Participant’s Plan Account at the end of such calendar year. The Annual Interest Credit shall be determined using
an annual interest rate based on a fixed income bond yield deemed appropriate by the Committee each year, at its discretion. For the 2012 calendar year and until such time as changed by the Committee, this shall be the average of Barclays US Credit
Index and Barclays Long Credit Index as of the first business day of the calendar year Annual Interest Credits are provided. The rate will change each calendar year based on changes to the bond indices noted above as of the first business day of the
calendar year. The rate can be a maximum of 8% per annum. 

  
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 Annual Interest Credits are credited to Plan Accounts of Participants on December 31 of
each calendar year. Participants who decease before their Annuity Starting Date, or have reached Normal Retirement Age or Early Retirement Age prior to December 31, shall be eligible for a prorata Annual Interest Credit until the Annuity
Starting Date. Annual Interest Credits are not credited to a Participant’s Plan Account after the Participant (or the Participant’s beneficiary, as the case may be) has commenced receiving benefits under the Plan. 

 

	4.	Annuity Starting Date. For participants who have attained their Normal Retirement Age or Early Retirement Age, the first day of the month coincident with
or next following the date that is thirty (30) days after the Participant separation from service (as that term is defined in Treasury Regulation 1.409A-1(h)). For vested Participants who have separated from service (and vested Participants who
have ceased to be active employees by reason of a Disability), but have not attained Normal Retirement Age or Early Retirement Age as of the date such Participant has separated from service, the Annuity Starting Date shall occur on the first day of
the month coincident with or next following the date that is 30 days following the date the Participant attains either his or her Early Retirement Age or, if the Participant does not become eligible for Early Retirement, his or her Normal Retirement
Age. For these purposes, Normal Retirement Age is age 65 (without any requirement regarding years of participation in the Plan). Notwithstanding the preceding, benefits payable as a lump sum following the death of a Participant shall be paid as soon
as reasonably practicable following the Participant’s death. 

  

	5.	Board. “Board” means the Board of Directors of the Company. 

 

	6.	Cause. “Cause” means conduct by the Participant reasonably likely to cause material harm to the Company that consists of proven gross negligence,
wanton or willful disregard of duties, acts of fraud, embezzlement, theft or the commission of a felony in the course of his employment or service, as determined by the Board or Committee after full consideration of the facts presented on behalf of
both the Company and the Participant. 

  

	7.	Change of Control. The term “Change of Control” shall have the same meaning as is set forth in the Susquehanna Bancshares, Inc. Key Employee Severance
Pay Plan, as that may be amended from time to time. 

  

	8.	Code. “Code” means the Internal Revenue Code of 1986, as amended. 

 

	9.	Committee. “Committee” means the compensation committee of the Board, or such other committee or person designated by the Board to serve as the
Committee for purposes of the Plan. 

  

	10.	Company. “Company” means Susquehanna Bancshares, Inc., a Pennsylvania corporation, its subsidiaries and affiliates; provided, however, that, where
necessary by the context in which the term is used, Company shall refer to Susquehanna Bancshares, Inc. 

  
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	11.	Disabled and Disability. A Participant shall be considered to be “Disabled” or to have terminated employment by reason of “Disability” if the
Participant ceases to be actively employed and is treated as on leave due to long-term disability. For these purposes, the determination of Disabled and Disability shall be based on the Participant’s eligibility for long-term disability
benefits under the Company’s applicable long-term disability plan, if any, and otherwise shall be considered to be Disabled if eligible for Social Security disability benefits. 

 

	12.	Early Retirement. Age 55 with 15 years of service and at least 5 years of participation in this Plan. 

 

	13.	Earnings. “Earnings” means base pay plus performance bonuses, but excludes special compensation such as long-term incentive compensation (LTI),
commissions, allowances and other extraordinary remuneration unless specifically authorized by the Committee. Any amounts deferred by the Participant’s election under a nonqualified deferred compensation plan or under a 401(k) plan sponsored by
the Company, or any amounts used to pay for welfare benefits on a pre-tax basis pursuant to a Section 125 plan sponsored by the Company shall be included in the Participant’s Earnings. 

 

	14.	ERISA. “ERISA” means the Employee Retirement Income Security Act of 1974, as amended, and any successor act thereto. 

 

	15.	Married. A Participant is “Married” if the Participant and the Participant’s spouse are in a relationship that is recognized as a legal marriage
between a man and a woman recognized under applicable state law; provided, however, that this definition of Married shall be automatically modified to the extent required to avoid violation of any applicable law, such as a law prohibiting certain
forms of discrimination. 

  

	16.	 Normal Retirement Age. “Normal Retirement Age” shall mean the later of age 65 and the 5th anniversary of Plan participation. 

 

	17.	One-Time Addition. A “One-Time Addition” means the amount determined by the Committee for select Participants and which is added to such
Participants’ Plan Accounts as described in written records maintained by the Committee. 

  

	18.	Participant. “Participant” means an eligible executive employee of the Company selected to receive benefits under the Plan as provided in
Article III of this Plan. 

  

	19.	Plan Account. “Plan Account” means an account established and maintained for each Participant as a bookkeeping account to track the value of each
Participant’ accrued benefit under the Plan. Each Participant’s Plan Account shall be equal to the Plan Account valued as of December 31, 2011 under the terms of the Plan prior to its amendment and restatement effective
January 1, 2012 (if the Participant participated in the Plan as of that date), plus One-Time Additions (treated as added immediately after the establishment of the Plan Account as of January 1, 2012), if any, plus Annual Interest Credits
plus Annual Earnings Credits plus any other adjustments deemed appropriate by the Committee. 

  
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	20.	Predecessor Plan. Susquehanna Bancshares, Inc. Supplemental Executive Retirement Plan as Amended and Restated Effective January 1, 2009 and Executed
on December 8, 2008. 

  

	21.	Separation from Service. “Separation from Service” means any termination of employment that is properly characterized as a “separation from
service” as that term is defined in Treasury Regulation Section 1.409(A)-1(h). 

  

	22.	Specified Employee. “Specified Employee” means any employee who is a “specified employee” as that term is defined in Treasury Regulation
Section 1.409A-1(i). 

  

	23.	Special Provisions. “Special Provisions” means the schedule attached hereto as Attachment 1, as that may be amended from time to time

  

	24.	Top Hat Plan. “Top Hat Plan” means a nonqualified, unfunded plan maintained primarily to provide deferred compensation benefits to a Participant
who falls within a select group of “management or highly compensated employees” within the meaning of Section 201, 301 and 401 of ERISA. 

  

	25.	Year of Service. “Year of Service” shall mean each consecutive twelve month period of employment with the Company determined on an elapsed time method,
measured from date of hire until date employment is terminated. 

 ARTICLE III. PARTICIPATION 

 

	1.	Participation. The Committee, or such person or entity designated by the Committee, acting in its discretion, may designate any eligible employee as a
Participant under this Plan, and may designate any conditions applicable to any such Participant. Such designation shall be in writing and shall be effective as of the date contained therein. Only those eligible employees who are so designated as
eligible to participate as Participants in the Plan shall be eligible for benefits hereunder. Participation in the Plan is terminable by the Committee, in its discretion, upon written notice to the Participant, and termination shall be effective as
of the date contained therein, but in no event earlier than the date of such notice, provided that no such termination shall in any material manner reduce or adversely affect any Participant’s rights to vested benefits hereunder without the
consent of the Participant. 

 ARTICLE IV. AMOUNT, FORM, AND 

PAYMENT OF SUPPLEMENTAL BENEFIT 
  

	1.	Normal Retirement Benefit. Subject to the terms of this Plan, a Participant who retires from employment shall be entitled to an annuity benefit hereunder
equal to the Actuarial Equivalent of such Participant’s Plan Account balance as of the Annuity Starting Date. 

  

	2.	Form of Benefit. The benefit payable to a Participant shall be paid as soon as practicable following the Participant’s Separation from Service
in the form of a life annuity payable monthly to the participant, subject to any express terms and conditions set forth in the Plan or in the Schedule of Retirement Benefits. 

  
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	3.	Optional Forms: The following benefits are available at the Participant’s election: 

 

	 	(a)	Single Life Annuity. This is an annuity payable monthly for the life of the Participant commencing as of the Annuity Starting Date. 

 

	 	(b)	Joint and Survivor Annuity. This is an annuity payable monthly for the life of the Participant commencing as of the Annuity Starting Date and payable to the
Participant’s spouse, in the event the spouse survives the Participant, in an amount equal to 50%, 75% or 100% of the amount that was payable to the Participant during the Participant’s lifetime. 

 

	 	(c)	Period Certain Annuity. This is an annuity payable monthly for the life of the Participant commencing as of the Annuity Starting Date, but payable to the
Participant’s designated beneficiary for a specified period of five (5), ten (10), fifteen (15) or twenty (20) years should the Participant die prior to the end of such specified period of years. 

 

	 	(d)	Default. If no election is made by a Participant, a Married Participant shall receive a 100% Joint and Survivor Annuity, and a Participant who is not Married
shall receive a Single Life Annuity. 

 Each of the forms of benefit set forth in this Section 3 of Article IV
are intended to be life annuities as that term is used for purposes of Treasury Regulation Section 1.409A-2(b)(2)(ii), so that the provision of a choice among such annuities to Participants to be elected prior to the commencement of the benefit
payments is permissible pursuant to applicable provisions of such Treasury Regulations. 
  

	4.	Death Benefit. In the event a Participant dies while still employed or in the event a Participant with a vested benefit under the Plan dies after his or
her Separation from Service, but before his or her Annuity Starting Date, the Participant’s death benefit shall be distributed as follows: 

  

	 	(a)	If a Participant is Married and either actively employed immediately prior to the Participant’s death, or is on leave due to a condition that qualifies as a
long-term Disability immediately prior to the Participant’s death, the Participant’s Plan Account shall be fully vested regardless of the other terms of the plan, including all Annual Earnings Credits and Annual Interest accruals through
date of death and the Participant’s surviving spouse shall receive a benefit as though the Participant had elected a 100% joint and survivor annuity, commencing as of the Participant’s Annuity Starting Date, and immediately thereafter
died. If a Participant with a vested benefit under the Plan has terminated employment, dies prior to his or her Annuity Starting Date and was Married immediately prior to the Participant’s death, the Participant’s spouse shall receive a
benefit commencing as of the Participant’s Annuity Starting Date determined as though the Participant had elected a 100% joint and survivor annuity, commencing as of the Participant’s Annuity Starting Date, and immediately thereafter died.

  
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	 	(b)	If a Participant dies while still employed, is not Married immediately prior to his or her death, but has surviving children, the Participant’s Plan Account
shall be deemed to be 50% vested (regardless of the other terms of the Plan), and the other 50% of the Participant’s Plan Account shall be deemed forfeited, and an amount equal to the vested portion of the Participant’s Plan Account shall
be divided among and distributed to the Participant’s children as soon as practicable following the Participant’s death. If a Participant with a vested benefit under the Plan dies after his or her Separation from Service but prior to his
or her Annuity Starting Date, and is not married immediately prior to his or her death, but has surviving children, the Participant’s Plan Account, to the extent vested under other terms of the Plan, shall be deemed to be vested as to 50% of
the portion that was otherwise vested, and the other 50% of the Participant’s Plan Account that was otherwise vested shall be deemed forfeited, and an amount equal to the vested portion (determined under this paragraph) of the
Participant’s Plan Account shall be divided among and distributed to the Participant’s children as soon as practicable following the Participant’s death. 

 

	 	(c)	If a Participant dies while still employed, is not Married immediately prior to his or her death and has no surviving children, the Participant’s Plan
Account shall be deemed to be 50% vested (regardless of the other terms of the Plan), and the other 50% of the Participant’s Plan Account shall be deemed forfeited, and an amount equal to the vested portion of the Participant’s Plan
Account shall be distributed to the Participant’s estate as soon as practicable following the Participant’s death. If a Participant with a vested benefit under the Plan dies after his or her Separation from Service but prior to his or her
Annuity Starting Date, and is not married immediately prior to his or her death and has no surviving children, the Participant’s Plan Account, to the extent vested under other terms of the Plan, shall be deemed to be vested as to 50% of the
portion that was otherwise vested, and the other 50% of the Participant’s Plan Account that was otherwise vested shall be deemed forfeited, and an amount equal to the vested portion (determined under this paragraph) of the Participant’s
Plan Account shall be distributed to the Participant’s estate as soon as practicable following the Participant’s death. 

  

	5.	Disability. In the event a Participant has a Separation from Service by reason of Disability, the Participant’s Plan Account shall be 100% vested.
The Participant shall be considered as continuing to be employed during the period the Participant is on leave and eligible for disability benefits, and shall be credited with Annual Earnings Credits as though the Participant were receiving Earnings
equal to the Participant’s average annual earnings during the three full years preceding the Participant’s separation from active service due to Disability. All amounts attributable to Annual Earnings Credits made during the period the
Participant is on leave due to Disability shall be forfeited in the event the Participant recovers from his or her Disability prior to his or her Annuity Starting Date but fails to return to employment with the Company for any reason.
Notwithstanding the foregoing, the Committee may determine not to enforce this forfeiture if the Committee determines that it would be inappropriate to do so, at the Committee’s sole discretion. 

  
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	6.	Change of Control. 

  

	 	(a)	Upon the occurrence of a Change of Control, all active Participants shall, notwithstanding any other provision of the Plan to the contrary, be fully vested in
their benefit Plan Accounts; provided, however, the forfeitures called for under Section 4 of this Article IV (on death of the Participant) shall continue to apply. 

 

	7.	Vesting. Each Participant shall, except to the extent expressly provided in the Plan, be vested in his or her Plan Account as follows: 

 

	 	(a)	The Plan Account of a Participant who has less than three years of participation in the Plan or the Predecessor Plan shall have a 0% vested interest in such Plan
Account; 

  

	 	(b)	 A Participant who has participated in the Plan or the Predecessor Plan for three or more years (meaning the Participant has been continuously
employed for three or more years commencing as of the date the Participant first became a Participant) shall have a fully vested interest in the portion of his or her Plan Account attributable to amounts credited as of a date that is two or more
years prior to the date of the vesting determination (meaning, after the three year vesting period, the Participant would forfeit the last two full calendar years of Annual Earnings Credits and Annual Interest Credits as credited to their Plan
Account on December 31st of those years, plus any
partial calendar year accrual in the year of termination if the participant is eligible for a partial accrual. The year of termination is included as one of the last two full calendar years subject to forfeiture if the Participant’s last day of
employment is December 31st of that termination
year); provided, however, that: 

  

	 	(i)	At death, amounts are vested according to the terms noted in this Section 7 of Article IV, provided, however, that the two year delay in vesting for Annual Earning
and Annual Interest Credits is waived; and provided, further, that the specific forfeitures provided for in Section 4 of Article IV shall continue to apply. 

 

	 	(ii)	At Normal Retirement Age, all Plan Account amounts are fully vested and the two year delay in vesting for Annual Earning and Annual Interest Credits is waived.

  

	 	(iii)	This Section 7(b) of Article IV shall not apply to amounts credited as One-Time Additions and amounts accrued and vested through December 31, 2011 under the
Predecessor Plan. 

  

	 	(c)	 A Participant who has participated in the Plan for three or more years shall be vested with respect to the portion of such Participant’s
Plan Account attributable to the amount, if any, credited to such Participant’s Plan Account as a One-Time Addition, by multiplying that portion of the Plan Account by a fraction, the numerator of which is the number of full months from the
date such One-Time Addition was credited to the Participant’s Plan Account until the date of 

  
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determination, and the denominator of which is the number of full months from the date such One-Time Addition was credited to the Participant’s Plan Account until the date the Participant
will attain age 65; provided, however, that in no event shall the fraction be greater than 1. 

  

	 	(d)	In the event a Participant has terminated his or her employment with the Company and is later rehired, the Committee shall make a determination, at its sole
discretion, as to the following matters: 

  

	 	(i)	Whether the rehired employee should be reinstated as an active Participant in the Plan, and, if so, on what specific terms and conditions; and 

 

	 	(ii)	In the event the Committee has determined to reinstate the Participant as an active Participant, the extent to which the Participant’s prior participation in the
Plan is to be counted for purposes of the application of this Section 7 of Article IV. 

 Nothing in this
Section 7 of Article IV shall be interpreted as prohibiting the Committee from establishing a more favorable vesting schedule or vested percentage for a Participant than would otherwise be applicable if the Committee determines that taking such
action is appropriate in light of any relevant facts and circumstances, as determined at the Committee’s sole and absolute discretion. 
  

	8.	Forfeiture. At the time of a Participant’s Separation from Service with the Company, the Participant shall forfeit all rights to his or her Plan Account
except to the extent such Plan Account is considered to be vested as of such date. 

  

	9.	Special Rules Regarding Distributions; Compliance With Code Section 409A. Notwithstanding anything to the contrary set forth in the Plan, no benefit under
the Plan shall be distributed at a time or in a manner that will be treated as a violation of the distribution rules of Code Section 409A(a)(2) and no alternative form of payment shall be permitted to be made under the Plan if such alternative
benefit form would violate any of the requirements of Code Section 409A(a)(3) or (4) relating to acceleration of benefits and changes in time and form of distribution (taking into account any regulations or other guidance issued by
Treasury or the Internal Revenue Service with regard to these Code provisions as may be in effect from time to time). By way of example, and not in limitation of the foregoing, the following specific rules regarding distribution of Plan benefits
shall be applicable: 

  

	 	(a)	No benefit under the Plan shall be distributed to any Participant who is a Specified Employee by reason of such Participant’s Separation from Service until
the date that is six months following the date of the Participant’s Separation from Service as required pursuant to Code Section 409A(a)(2)(B)(i); and 

 

	 	(b)	No distribution to any Participant of any benefit under the Plan shall be made prior to the date of such Participant’s Separation from Service to the extent
such a payment would constitute an acceleration of payment in violation of Code Section 409A(a)(3). 

  
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 Any benefits to a Specified Employee that are delayed six months due to Code
Section 409A(a)(2)(B)(i) shall be paid in arrears on month seven without interest. 
 ARTICLE V. ADMINISTRATION

  

	1.	Authority of the Committee. This Plan shall be administered by the Committee. Subject to the provisions of the Plan, the Committee shall have the authority to
make, amend, interpret, and enforce all appropriate rules and regulations for the administration of this Plan and to decide or resolve any and all questions, including interpretations of this Plan, as may arise in connection with this Plan.
Notwithstanding the foregoing, the Company shall act as the plan administrator for purposes of any filings with any governmental entity or in the event claims for benefits are made by any Participant. 

 

	2.	Agents. In the administration of this Plan, the Committee may, from time to time, employ agents and delegate to such agents such administrative duties as it
deems advisable and allowable under the terms of the Plan. 

  

	3.	Decisions Binding. The decision or action of the Committee with respect to any question arising out of or in connection with the administration, interpretation,
and application of this Plan and any rules or guidelines made in connection with this Plan shall be final and conclusive, and shall be binding upon all persons and entities having any interest in this Plan. 

 

	4.	Indemnity of the Committee and its Delegatees. The Company shall indemnify and hold harmless the Committee and its individual members, and any other individual
employees of the Company to whom the Committee has delegated its responsibilities, against any and all claims, loss, damage, expense, or liability arising from any action or failure to act with respect to this Plan. 

 

	5.	Cost of Administration. The Company shall bear all expenses of administration of this Plan. 

 

	6.	Claims. 

  

	 	(a)	A Participant or a Participant’s beneficiary for benefits under the Plan may file a written claim for benefits under the Plan with the Committee, if he or
she believes that he is entitled to receive benefits under the Plan but is not receiving benefits under the Plan or if he is receiving benefits under the Plan, but disputes the amount and/or form of benefits received. Such written claim for benefits
shall set forth the nature of the claim and/or dispute, and set forth all facts and circumstances which are relevant to the claim. 

  

	 	(b)	If, pursuant to the provisions of the Plan, the Committee denies the claim of the Participant or the Participant’s beneficiary for benefits under the Plan,
the Committee shall provide written notice, within ninety (90) days after receipt of the claim, setting forth in a manner calculated to be understood by the claimant: 

 

	 	(i)	the specific reasons for such denial; 

  
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	 	(ii)	the specific reference to the Plan provisions on which the denial is based; 

 

	 	(iii)	a description of any additional material or information necessary to perfect the claim and an explanation of why such material or information is needed; and

  

	 	(iv)	an explanation of the Plan’s claim review procedure and the time limitations of this subsection applicable thereto. 

 

	 	(c)	The Participant or the Participant’s beneficiary whose claim for benefit has been denied may request review by the Committee of the denied claim by
notifying the Committee in writing within sixty (60) days after receipt of the notification of claim denial. As part of said review procedure, the claimant or the claimant’s authorized representative may review pertinent documents and
submit issues and comments to the Committee in writing. The Committee shall render its decision to the claimant in writing in a manner calculated to be understood by the claimant not later than sixty (60) days after receipt of the request for
review, unless special circumstances require an extension of time, in which case decision shall be rendered as soon after the sixty-day period as possible, but not later than one hundred and twenty (120) days after receipt of the request for
review. The decision on review shall state the specific reasons therefor and the specific Plan reference on which it is based. 

 ARTICLE VI. AMENDMENT AND TERMINATION 
  

	1.	The Company hereby reserves the right to amend, modify, or terminate the Plan (and the Schedule of Retirement Benefits) at any time, and from time to time, by
action of a majority of the members of the Committee. Except as described below in this Article VI, no such amendment or termination shall in any material manner reduce or adversely affect any Participant’s rights to benefits hereunder without
the consent of such Participant. 

  

	2.	The Committee may terminate the Plan and commence termination payout for all Participants, or remove certain employees as Participants, if it is determined by
the United States Department of Labor or a court of competent jurisdiction that the Plan constitutes an employee pension benefit plan within the meaning of Section 3(2) of ERISA which is not exempt from the provisions of Parts 2, 3 and 4 of
Title I of ERISA; provided, however, that if the Plan is terminated pursuant to this sentence, then each Participant shall be deemed to be fully vested in the benefits described in Article IV as of the date immediately preceding such termination and
each Participant shall be paid his or her Plan Account in a single lump-sum in such manner as complies with the requirements of Code Section 409A and Treasury Regulations promulgated pursuant to Code Section 409A. 

  
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 ARTICLE VII. MISCELLANEOUS 

 

	1.	Unfunded Plan. This Plan is intended to be a Top Hat Plan and therefore exempt from the provisions of Parts 2, 3, and 4 of Title I of ERISA. Such status shall
not be adversely affected by the establishment of any trust pursuant to Paragraph 7.4 below. 

  

	2.	Unsecured General Creditor. Each Participant and his or her beneficiaries, heirs, successors, and assigns shall have no secured legal or equitable rights,
interests, or claims in any property or assets of the Company, nor shall any such persons have any rights, interests or claims in any life insurance policies, annuity contracts, or the proceeds therefrom owned or which may be acquired by the
Company. Except as provided in Paragraph 7.4, such policies, annuity contracts, or other assets of the Company shall not be held under any trust for the benefit of a Participant, his or her beneficiaries, heirs, successors or assigns, or held, in
any way, as collateral security for the fulfilling of any obligations of the Company under this Plan. Any and all of the Company’s assets and policies shall be, and shall remain for purposes of this Plan, the general, unpledged, unrestricted
assets of the Company. The Company’s obligation under this Plan shall be that of an unfunded and unsecured promise to pay money in the future. 

  

	3.	Trust Fund. 

  

	 	(a)	At its discretion, the Company may establish one or more grantor trusts, with such trustees as the Committee may approve, for the purpose of providing for the
payment of benefits under this Plan. Such trust or trusts may be irrevocable, but the assets thereof shall be subject to the claims of the Company’s general creditors. To the extent any benefits provided under this Plan are actually paid from
any such trust, the Company shall have no further obligation with respect thereto, but to the extent not so paid, such benefits shall remain the obligation of, and shall be paid by, the Company. 

 

	 	(b)	At its discretion, the Company may, in addition to or in lieu of establishing one or more grantor trusts as described in clause (a) above, take other
actions to fund the benefits provided for under this Plan, but in no event shall the Company establish any funding mechanism which would result in the Plan failing to qualify as a Top Hat Plan exempt from the provisions of Parts 2, 3, and 4 of Title
I of ERISA. 

  

	4.	Nonassignability. Neither a Participant nor any other person shall have any right to sell, assign, transfer, pledge, anticipate, mortgage, or otherwise
encumber, hypothecate or convey in advance of actual receipt the amounts, if any, payable hereunder, or any part thereof, which are, and all rights to which are, expressly declared to be nonassignable and nontransferable. No part of the amount
payable shall, prior to actual payment, be subject to seizure or sequestration for the payment of any debts, judgments, alimony or separate maintenance owed by a Participant or any other person, nor shall such amounts or rights to such amounts be
transferable by operation of law in the event of a Participant’s or any other person’s bankruptcy or insolvency. 

  
 12 

	5.	Not a Contract of Employment. The terms and conditions of this Plan shall not be deemed to constitute a contract of employment between the Company and any
Participant, and Participants (and Participants’ beneficiaries) shall have no rights against the Company except as may otherwise be specifically provided herein. Moreover, nothing in this Plan shall be deemed to give a Participant the right to
be retained in the service of the Company or to interfere with the right of the Company to discipline or discharge any Participant at any time. 

  

	6.	Validity. If any provision of this Plan shall be held illegal or invalid for any reason, said illegality or invalidity shall not affect the remaining parts
hereof, but this Plan shall be construed and enforced as if such illegal and invalid provision had never been inserted herein. 

  

	7.	Successors. The provisions of this Plan shall bind and inure to the benefit of the Company and its successors and assigns, and the Company shall require all its
successors and assigns to expressly assume its obligations hereunder. The term “successors,” as used herein, shall include any corporate or other business entity which shall, whether by merger, consolidation, purchase or otherwise, acquire
all or substantially all of the business and assets of the Company. 

  

	8.	Tax Withholding. The Company shall have the right to require Participants to remit to the Company an amount sufficient to satisfy federal, state, and local tax
withholding requirements, or to deduct from payments made pursuant to the Plan amounts sufficient to satisfy such tax withholding requirements. 

  

	9.	Governing Law. The provisions of this agreement shall be construed and interpreted according to the laws of the State of Pennsylvania except as preempted by
Federal law. 

  

	10.	Forfeiture. All benefits hereunder shall be subject to forfeiture in their entirety in the event that Participant’s employment is terminated for Cause.

 IN WITNESS WHEREOF, the Company has caused the Plan, as amended and restated, to be adopted as of the Effective
Date. 
  

			
	SUSQUEHANNA BANCSHARES, INC.
		
	By:	 	  

 

			
		
	Name:	 	
	Title:	 	

  
 13 

 Attachment 1 
 Special Provisions 
  

	1.	Prior Plan Members Designation: Plan Participants who have this designation shall have their Accrued Benefits determined solely by reference to the Predecessor
Plan, the provisions of the Plan as in effect prior to this Amendment and Restatement (i.e., as of December 31, 2011) and without regard to contrary or alternative provisions otherwise set forth in the Plan as amended and restated.

  

	2.	Minimum Benefit Members Designation: 

 Type A: Notwithstanding any other provisions, these participants shall receive a minimum benefit equal to (1) 75% of the benefit the Participant would have received under the Susquehanna
Bancshares, Inc. Retirement Income Plan (the “RIP”) as in effect prior to January 1, 1998 based on the Participant’s service and compensation as defined in the RIP, without regard to IRS compensation or benefit limits, as of his
or her Early Retirement Date, Normal Retirement Date or Late Retirement Date, as applicable, reduced by (2) his accrued benefit payable from the Susquehanna Bancshares, Inc. Cash Balance Pension Plan. 

Type B: These participants will receive the Minimum Benefit from Type A above, plus effective January 1, 2012 part
(1) above shall increase by 18% multiplied by a fraction, the numerator of which is the number of full months from the date such increase was effective to Separation from Service, and the denominator of which is the number of full months from
the date such increase was effective until the date the participant will attain age 65; provided, however, that in no event shall the fraction be greater than 1. The effect of this change is to increase the participants benefit to 93% of the benefit
he would have received under the Susquehanna Bancshares, Inc. Retirement Income Plan as in effect prior to January 1, 1998, and a portion between 75% and 93% if he leaves employment between January 1, 2012 and age 65, with all other terms
and conditions remaining the same. The Committee shall have the discretion to waive or accelerate vesting conditions for this portion of his benefit at its discretion. 
  

	3.	Other Special Provisions: 

Each Participant or Beneficiary receiving a benefit in the form of an annuity paid on a monthly basis shall receive an additional payment
at the same time as the first payment of such monthly annuity that is equal to the monthly annuity payment. The effect of this is that the first payment of any monthly annuity shall generally be double the normal monthly annuity so as to provide an
additional benefit that makes up for the Plan provision requiring in all cases a 30 day waiting period following Separation from Service. 

  
 1EXHIBIT 10.1

 Exhibit 10.1 
 EXECUTION VERSION 
 WRITTEN CONSENT AND VOTING AGREEMENT 

BY AND AMONG 
 PROJECT DIAMOND HOLDINGS CORPORATION, 
 NEW MOUNTAIN PARTNERS II, L.P.,

 NEW MOUNTAIN AFFILIATED INVESTORS II, L.P., 

ALLEGHENY NEW MOUNTAIN PARTNERS, L.P., 
 AND 
 DELTEK, INC. 

DATED AS OF AUGUST 26, 2012 

 INDEX OF DEFINED TERMS 

 

					
	 	  	Page	 
	 Agreement
	  	 	1	  
	 Company
	  	 	1	  
	 Covered Shares
	  	 	2	  
	 Encumbrance
	  	 	2	  
	 Existing Shares
	  	 	2	  
	 Merger
	  	 	1	  
	 Merger Agreement
	  	 	1	  
	 Merger Sub
	  	 	1	  
	 Parent
	  	 	1	  
	 Section 2.1(b) Matters
	  	 	4	  
	 Stockholders
	  	 	1	  
	 Transfer
	  	 	2	  

 WRITTEN CONSENT AND VOTING AGREEMENT 

WRITTEN CONSENT AND VOTING AGREEMENT, dated as of August 26, 2012 (this “Agreement”), by and among Project Diamond
Holdings Corporation, a corporation organized under the laws of Delaware (“Parent”), New Mountain Partners II, L.P., New Mountain Affiliated Investors II, L.P. and Allegheny New Mountain Partners, L.P., each, a Delaware
limited partnership (the “Stockholders”), and Deltek, Inc., a Delaware corporation (the “Company”). 
 W I T N E S S E T H: 
 WHEREAS, concurrently with the execution of this
Agreement, Parent, Project Diamond Merger Corp., a newly-formed Delaware corporation that is wholly-owned by Parent (“Merger Sub”), and the Company are entering into an Agreement and Plan of Merger, dated as of the date hereof (as
amended, supplemented, restated or otherwise modified from time to time, the “Merger Agreement”) pursuant to which, among other things, Merger Sub will merge with and into the Company (the “Merger”) and each
outstanding share of the Common Stock of the Company, par value $0.001 per share (the “Company Stock”), will be converted into the right to receive the merger consideration specified therein. 

WHEREAS, as of the date hereof, New Mountain Partners II, L.P. is the record and beneficial owner, in the aggregate, of 37,318,811
outstanding shares of the Company Stock, New Mountain Affiliated Investors II, L.P. is the record and beneficial owner, in the aggregate, of 648,306 outstanding shares of the Company Stock, and Allegheny New Mountain Partners, L.P. is the record and
beneficial owner, in the aggregate, of 2,877,257 outstanding shares of the Company Stock; 
 WHEREAS, as a condition and
material inducement to Parent entering into the Merger Agreement, Parent has required that the Stockholders agree, and the Stockholders have agreed, to enter into this agreement and abide by the covenants and obligations with respect to the Covered
Shares (as hereinafter defined) set forth herein. 
 NOW THEREFORE, in consideration of the foregoing and the mutual
representations, warranties, covenants and agreements herein contained, and intending to be legally bound hereby, the parties hereto agree as follows: 
 ARTICLE I 
 GENERAL 

 

	 	1.1.	Defined Terms. 

 The
following capitalized terms, as used in this Agreement, shall have the meanings set forth below. Capitalized terms used but not otherwise defined herein shall have the meanings ascribed thereto in the Merger Agreement. 

  
 -1-

 “Beneficial Ownership” has the meaning ascribed to such term in Rule 13d-3
under the Securities Exchange Act of 1934, as amended. The terms “Beneficially Own”, “Beneficially Owned” and “Beneficial Owner” shall each have a correlative meaning. 

“Covered Shares” means, with respect to the Stockholders, the Stockholders’ Existing Shares, together with any
shares of Company Stock or other voting capital stock of the Company and any shares of the Company Stock or other voting capital stock of the Company issuable upon the conversion, exercise or exchange of securities that are convertible into or
exercisable or exchangeable for shares of Company Stock or other voting capital stock of the Company, in each case that such specified Stockholder has or acquires Beneficial Ownership of on or after the date hereof. 

“Encumbrance” means any security interest, pledge, mortgage, lien (statutory or other), charge, option to purchase,
lease or other right to acquire any interest or any claim, restriction, covenant, title defect, hypothecation, assignment, deposit arrangement or other encumbrance of any kind or any preference, priority or other security agreement or preferential
arrangement of any kind or nature whatsoever (including any conditional sale or other title retention agreement), excluding restrictions under securities laws. 
 “Existing Shares” means, with respect to each Stockholder, the number of shares of Company Stock beneficially owned and owned of record by the Stockholder, as set forth in the recitals.

 “Expiration Date” means any date upon which the Merger Agreement is terminated in accordance with its terms.

 “Permitted Transfer” means a Transfer of Covered Shares by a Stockholder to an Affiliate of such
Stockholder, provided that, (i) such Affiliate shall remain an Affiliate of such Stockholder at all times following such Transfer, (ii) prior to the effectiveness of such Transfer, such transferee executes and delivers to Parent a written
agreement, in form and substance reasonably acceptable to Parent, to assume all of such Stockholder’s obligations hereunder in respect of the securities subject to such Transfer and to be bound by the terms of this Agreement, with respect to
the securities subject to such Transfer, to the same extent as such Stockholder is bound hereunder and to make each of the representations and warranties hereunder in respect of the securities transferred as such Stockholder shall have made
hereunder. 
 “Transfer” means, directly or indirectly, to sell, transfer, assign, pledge, encumber,
hypothecate or similarly dispose of (by merger (including by conversion into securities or other consideration), by tendering into any tender or exchange offer, by operation of law or otherwise), either voluntarily or involuntarily, or to enter into
any contract, option or other arrangement or understanding with respect to the voting of or sale, transfer, assignment, pledge, encumbrance, hypothecation or similar disposition of (by merger, by tendering into any tender or exchange offer, by
testamentary disposition, by operation of law or otherwise). 

  
 -2-

 ARTICLE II 
 VOTING 
  

	 	2.1.	Agreement to Vote. 

 (a)
Each of the Stockholders hereby agrees that, immediately following the execution and delivery of this Agreement and the Merger Agreement and subject to Section 2.1(d), such Stockholders will execute and deliver to the Company a written consent
in the form of Exhibit A hereto (a “Written Consent”). The Written Consent shall be coupled with an interest and shall be irrevocable, except as provided in Section 5.1, below. 

(b) In addition, each of the Stockholders hereby irrevocably and unconditionally agrees that during the period beginning on the date
hereof and ending on the earliest of (x) the Closing Date, (y) the Expiration Date, or (z) the termination of this Agreement in accordance with its terms, at any meeting of the stockholders of the Company, however called, including
any adjournment or postponement thereof, and in connection with any action proposed to be taken by written consent of the stockholders of the Company, the Stockholders shall, in each case, to the fullest extent that such matters are submitted for
the vote or written consent of the Stockholders and that the Covered Shares are entitled to vote thereon or consent thereto: 
 (i) appear at each such meeting or otherwise cause the Covered Shares as to which the Stockholders control the right to vote to be counted as present thereat for purposes of calculating a quorum; and

 (ii) vote (or cause to be voted), in person or by proxy, or deliver (or cause to be delivered) a written
consent covering, all of the Covered Shares as to which the Stockholders control the right to vote (A) in favor of the adoption of the Merger Agreement and any related proposal in furtherance thereof, as reasonably requested by Parent,
submitted for the vote or written consent of stockholders, including, without limiting any of the foregoing obligations, in favor of any proposal to adjourn or postpone to a later date any meeting of the stockholders of the Company at which any of
the foregoing matters are submitted for consideration and vote of the stockholders of the Company if there are not sufficient votes for approval of such matters on the date on which the meeting is held, (B) against any action or agreement
submitted for the vote or written consent of stockholders that the Stockholders know is in opposition to the Merger or that the Stockholders know would result in a breach of any covenant, representation or warranty or any other obligation or
agreement of the Company contained in the Merger Agreement, or of the Stockholders contained in this Agreement, and (C) against any Acquisition Proposal and against any other action, agreement or transaction submitted for the vote or written
consent of stockholders that the Stockholders know or reasonably suspect would impede, interfere with, delay, postpone, discourage, frustrate the purposes of, adversely affect or prevent the consummation of the Merger or the other transactions
contemplated by the Merger Agreement or this Agreement or the performance by the Company of its obligations under the Merger Agreement or by the Stockholders of their obligations under this Agreement. 

  
 -3-

 (c) Any vote required to be cast or consent required to be executed pursuant to this
Section 2.1 shall be cast (or consent shall be given) by the Stockholders in accordance with such procedures relating thereto so as to ensure that it is duly counted, including for purposes of determining whether a quorum is present.

 (d) The obligations of the Stockholders specified in Section 2.1(a) and Section 2.1(b) (other than
Section 2.1(b)(ii)(A)) shall apply whether or not the Merger or any action described above is recommended by the Board of Directors of the Company (or any committee thereof). The obligations of the Stockholders specified in
Section 2.1(b)(ii)(A) shall apply whether or not the Merger or any action described above is recommended by the Board of Directors of the Company (or any committee thereof); provided, however, that, solely with respect to
the Stockholders’ obligations under Section 2.1(b)(ii)(A), in the event that (i) the Company has complied with its obligations under Section 6.3 of the Merger Agreement, (ii) the Board of Directors provides
written notice to Parent prior to any execution or delivery of the Written Consent specifying that (A) there has been an Adverse Recommendation Change effected in accordance with Section 6.3 of the Merger Agreement and
(B) Parent is entitled to enforce its remedies under Article VIII of the Merger Agreement, the Stockholders shall only be required to vote or execute a written consent with respect to shares of Class A Stock representing 100% of the
total voting power of all outstanding shares of Class A Stock and with respect to Covered Shares representing in the aggregate 33% of the total voting power of all outstanding shares of Company Stock, and may vote or execute a written consent
under Section 2.1(b)(ii)(A) with respect to the remaining Covered Shares in their sole discretion. 
 2.2. No
Inconsistent Agreements. Each of the Stockholders hereby covenants and agrees that, except for this Agreement and the Written Consent and except as may be permitted by Section 4.3(b), it (a) has not entered into, and shall not
enter into at any time while this Agreement remains in effect, any voting agreement or voting trust with respect to the Covered Shares with respect to any of the matters described in Section 2.1(b)(ii) (the “Section 2.1(b)
Matters“), (b) has not granted, and shall not grant at any time while this Agreement remains in effect (except to the extent permitted by Section 2.1(d)), a proxy, consent or power of attorney with respect to the Covered
Shares with respect to any of the Section 2.1(b) Matters and (c) has not taken and shall not take any action that would make any representation or warranty of the Stockholders contained herein untrue or incorrect or have the effect of
preventing or disabling any Stockholder from performing any of its obligations under this Agreement. Each of the Stockholders hereby represents that all proxies or powers of attorney given by such Stockholders prior to the execution of this
Agreement in respect of the voting of each such Stockholder’s Covered Shares with respect to the matters covered by Section 2.1(b)(ii), if any, are not irrevocable and each Stockholder hereby revokes (and shall cause to be revoked)
any and all previous proxies or powers of attorney with respect to each such Stockholder’s Covered Shares with respect to the matters covered by Section 2.1(b)(ii). 

  
 -4-

 ARTICLE III 
 REPRESENTATIONS AND WARRANTIES 
 3.1. Representations and Warranties of
the Stockholders. Each Stockholder, as to itself only, hereby represents and warrants to Parent as follows: 
 (a)
Organization; Authorization; Validity of Agreement; Necessary Action. The Stockholder is duly organized and is validly existing and in good standing under the laws of the jurisdiction of its formation. The Stockholder has full power and
authority to execute and deliver this Agreement, to perform its obligations hereunder and to consummate the transactions contemplated hereby. The execution and delivery by the Stockholder of this Agreement, the performance by it of its obligations
hereunder and the consummation by it of the transactions contemplated hereby have been duly and validly authorized by the Stockholder and no other actions or proceedings on the part of the Stockholder or any manager or partner thereof are necessary
to authorize the execution and delivery by it of this Agreement, the performance by it of its obligations hereunder or the consummation by it of the transactions contemplated hereby. This Agreement has been duly executed and delivered by the
Stockholder and, assuming this Agreement constitutes a valid and binding obligation of the other parties hereto, constitutes a legal, valid and binding obligation of the Stockholder, enforceable against it in accordance with its terms, subject to
bankruptcy, insolvency, fraudulent transfer, moratorium, reorganization or similar laws affecting the rights of creditors generally and the availability of equitable remedies (regardless of whether such enforceability is considered in a proceeding
in equity or at law). 
 (b) Ownership. The Stockholder’s Existing Shares are, and all of the Covered Shares owned
by the Stockholder from the date hereof through and on the Closing Date will be, Beneficially Owned and owned of record by the Stockholder. The Stockholder has good and marketable title to the Stockholder’s Existing Shares, free and clear of
any Encumbrances. As of the date hereof, the Stockholder’s Existing Shares constitute all of the shares of Company Stock Beneficially Owned or owned of record by the Stockholder. Except for the rights granted to Parent hereby, the Stockholder
has and will have at all times through the Closing Date sole voting power to control the vote and consent as contemplated herein, sole power of disposition, sole power to issue instructions with respect to the matters set forth in Article II, and
sole power to agree to all of the matters set forth in this Agreement, in each case, with respect to all of the Stockholder’s Existing Shares and with respect to all of the Covered Shares owned by the Stockholder at all times through the
Closing Date. 
 (c) No Violation. The execution, delivery and performance of this Agreement by the Stockholder does not
and will not (whether with or without notice or lapse of time, or both) (i) violate any provision of the certificate of formation or other comparable governing documents, as applicable, of the Stockholder, (ii) violate, conflict with or
result in the breach of any of the terms or conditions of, result in any (or the right to make any) modification of or the cancellation or loss of a benefit under, require any notice, consent or action under, or otherwise give any Person the right
to terminate, accelerate obligations under or receive payment or additional rights under, or constitute a default under, any Contract to which the Stockholder is a party or by which it is bound or (iii) violate any Law applicable to the
Stockholder or by which any of the Stockholder’s assets or properties is bound, except for any of the foregoing as would not, either individually or in the aggregate, impair the ability of the Stockholder to perform its obligations hereunder or
to consummate the transactions contemplated hereby on a timely basis. 

  
 -5-

 (d) Consents and Approvals. The execution and delivery of this Agreement by the
Stockholder does not, and the performance by the Stockholder of its obligations under this Agreement and the consummation by it of the transactions contemplated hereby will not, require the Stockholder to obtain any consent, approval, authorization
or permit of, or to make any filing with or notification to, any Governmental Entity, other than the filings of any reports with the SEC and except where the failure to obtain such consents, approvals, authorizations or permits, or to make such
filings and notifications, would not, either individually or in the aggregate, prevent or delay the performance by the Stockholder of any of its obligations hereunder. 
 (e) Absence of Litigation. As of the date hereof, there is no Action pending or, to the knowledge of the Stockholder, threatened against or affecting the Stockholder or any of its Affiliates before
or by any Governmental Entity that would reasonably be expected to impair the ability of the Stockholder to perform its obligations hereunder or to consummate the transactions contemplated hereby on a timely basis. 

(f) Finder’s Fees. Except as disclosed pursuant to the Merger Agreement, no investment banker, broker, finder or other
intermediary is entitled to a fee or commission from Parent, Merger Sub or the Company in respect of this Agreement based upon any arrangement or agreement made by or at the direction of the Stockholder. 

(g) Reliance by Parent and Merger Sub. The Stockholder understands and acknowledges that Parent and Merger Sub are entering into
the Merger Agreement in reliance upon the Stockholder’s execution and delivery of this Agreement and the representations and warranties of the Stockholder contained herein. Such Stockholder understands and acknowledges that the Merger Agreement
governs the terms of the Merger and the other transactions contemplated thereby. 
 3.2. Representations and Warranties of
Parent. Parent hereby represents and warrants to the Stockholders that nothing contained in this Agreement has caused or shall cause Parent to acquire Beneficial Ownership of the Covered Shares. 

ARTICLE IV 

OTHER COVENANTS 
 4.1. Prohibition on Transfers, Other Actions. During the term of this Agreement, each Stockholder hereby agrees not to (i) Transfer any of the Covered Shares, Beneficial Ownership thereof or
any other interest therein (including by tendering into a tender or exchange offer), unless such Transfer is a Permitted Transfer, (ii) enter into any agreement, arrangement or understanding with any Person (other than Parent or Merger Sub), or
knowingly take any other action, that violates or conflicts with the Stockholder’s representations, warranties, covenants and obligations under this Agreement, or (iii) knowingly take any action that could restrict or otherwise affect the
Stockholder’s legal power, authority and right to comply with and perform its covenants and obligations under this Agreement. Any Transfer in violation of this provision shall be void ab initio. 

  
 -6-

 4.2. Stock Dividends, etc. In the event of a stock split, stock dividend or
distribution, or any change in the Company Stock by reason of any split-up, reverse stock split, recapitalization, combination, reclassification, reincorporation, exchange of shares or the like, the terms “Existing Shares” and
“Covered Shares” shall be deemed to refer to and include such shares as well as all such stock dividends and distributions and any securities into which or for which any or all of such shares may be changed or exchanged or which are
received in such transaction. 
 4.3. No Solicitation.  

(a) Except as set forth in this Section 4.3, each Stockholder hereby agrees that it shall, and shall direct its
Representatives to, immediately cease any discussions or negotiations with any Persons that may be ongoing as of the date of this Agreement with respect to an Acquisition Proposal. During the term of this Agreement and except as permitted by
Section 4.3(b), each Stockholder agrees that it shall not, and it shall not authorize any of its Affiliates or Representatives to, directly or indirectly, (i) solicit, initiate, or knowingly facilitate or encourage (including by
providing information in a manner designed to knowingly encourage) the submission of any Acquisition Proposal to the Company, (ii) enter into or participate in any discussions or negotiations with, or furnish any confidential information
relating to the Company or any of its Subsidiaries or afford access to the business, properties, assets, books or records of the Company or any of its Subsidiaries, to any Third Party for the purpose of knowingly facilitating or encouraging (or
which could reasonably be expected to facilitate or encourage) an Acquisition Proposal, (iii) approve, endorse or enter into any agreement in principle, letter of intent, term sheet, merger agreement, acquisition agreement, option agreement or
other similar instrument relating to an Acquisition Proposal or any proposal or offer that is intended to lead to an Acquisition Proposal or requires the Company to abandon the Merger Agreement, or (iv) make or participate in, directly or
indirectly, a “solicitation” of “proxies” (as such terms are used in the rules of the SEC) or powers of attorney or similar rights to vote, or seek to advise or influence any Person with respect to the voting of, any shares of
Company Stock in connection with any vote or other action on any of the Section 2.1(b) Matters, other than to recommend that stockholders of the Company vote in favor of the adoption of the Merger Agreement and as otherwise expressly provided
in this Agreement or to otherwise vote or consent with respect to Covered Shares in a manner that would not violate Section 2.1, or (v) agree to do any of the foregoing. 

(b) Notwithstanding anything to the contrary in this Agreement, solely to the extent the Company is permitted to take the actions set
forth in Section 6.3(b) of the Merger Agreement with respect to an Acquisition Proposal, each Stockholder and its Affiliates and Representatives will be free to participate in any discussions or negotiations regarding such Acquisition
Proposal with the Person making such Acquisition Proposal, provided that (i) such Stockholder has not breached this Section 4.3 and (ii) such action by such Stockholder and its Affiliates and Representatives would be permitted
to be taken by the Company pursuant to Section 6.3(b) of the Merger Agreement. 
 (c) For the purposes of this
Section 4.3, the Company will be deemed not to be an Affiliate or Subsidiary of any Stockholder, and any officer, director, employee, agent or 

  
 -7-

 
advisor of the Company (in each case, in their capacities as such) will be deemed not to be a Representative or Affiliate of any such Stockholder. For the avoidance of doubt, nothing in this
Section 4.3 shall affect in any way the obligations of any Person (including the Company) under Section 6.3 of the Merger Agreement. 
 4.4. Notice of Acquisitions; Proposals Regarding Prohibited Transactions. Each Stockholder hereby agrees to notify Parent in writing (a) as promptly as practicable (and in any event within 24
hours following such acquisition by the Stockholder) of the number of any additional shares of Company Stock or other securities of the Company of which the Stockholder acquires Beneficial Ownership on or after the date hereof and (b) within
three (3) Business Days after receipt of any Acquisition Proposal, and shall disclose the material terms of such Acquisition Proposal. 
 4.5. Waiver of Appraisal Rights. Each Stockholder agrees not to exercise any rights of appraisal or any dissenters’ rights (including under Section 262 of the Delaware General Corporation
Law) that the Stockholder may have (whether under applicable Law or otherwise) or could potentially have or acquire in connection with the Merger. 
 4.6. Letter of Transmittal and Delivery of Merger Consideration. Parent agrees to provide the Stockholders a copy of the letter of transmittal referenced in Section 2.2 of the Merger
Agreement a reasonable time period prior to the anticipated Closing Date to allow the Stockholders to complete the letter of transmittal and provide such letter of transmittal to the Paying Agent prior to or on the Closing Date. Parent agrees to use
reasonable best efforts to cause the Paying Agent to deliver by wire transfer of immediately available funds the Merger Consideration to which the Stockholders are entitled under the terms of the Merger Agreement on the same date as the Closing
Date. 
 4.7. Disclosure. Subject to reasonable prior notice and approval (not to be unreasonably withheld or delayed) of
the Stockholders, each Stockholder hereby authorizes the Company and Parent to publish and disclose in any announcement or disclosure required by the SEC and in the Information Statement the Stockholder’s identity and ownership of such
Stockholder’s Covered Shares and the nature of the Stockholder’s obligations under this Agreement. 
 ARTICLE V

 MISCELLANEOUS 
 5.1. Termination. This Agreement shall remain in effect until the earliest to occur of (i) the Expiration Date, (ii) the Closing Date, (iii) the delivery of written notice by Parent
to the Stockholders of termination of this Agreement and (iv) the delivery of written notice of termination by the Stockholder to Parent, to the extent permitted under applicable Law, following any Fundamental Amendment effected without the
prior consent of the Stockholder, and upon the occurrence of the earliest of such events this Agreement shall terminate and be of no further force; provided, however, that the provisions of this Section 5.1,
Section 5.2 and Sections 5.4 through 5.13 shall survive any termination of this Agreement. Nothing in this Section 5.1 and no termination of this Agreement shall relieve or otherwise limit any party of liability
for willful 

  
 -8-

 
breach of this Agreement. For the avoidance of doubt, in the event the Merger Agreement is terminated prior to the Effective Time, this Agreement and any consent executed pursuant hereto shall be
deemed null and void and have no further effect. “Fundamental Amendment” means the execution by the Company, Parent and Merger Sub of a written amendment to, or written waiver by the Company, Parent and Merger Sub of any provision
of, the Merger Agreement that reduces the amount of the Merger Consideration or changes the form of the Merger Consideration to include or substitute therefor a form other than cash. 

5.2. Stop Transfer Order. In furtherance of this Agreement, each Stockholder hereby authorizes and instructs the Company to
instruct its transfer agent to enter a stop transfer order with respect to all of the Covered Shares held of record by such Stockholder. The Company agrees that as promptly as practicable after the date of this Agreement it shall give such stop
transfer instructions to the transfer agent for the Company Stock. The Company agrees that, (i) if this Agreement is terminated in accordance with Section 5.1, then, promptly following the termination of this Agreement, or
(ii) immediately following the Closing (and in any event within such time as would not delay receipt by the Stockholder of the Merger Consideration), the Company will cause any stop transfer instructions imposed pursuant to this
Section 5.2 to be lifted. 
 5.3. No Ownership Interest. Nothing contained in this Agreement shall be deemed
to vest in Parent any direct or indirect ownership or incidence of ownership of or with respect to any Covered Shares, except as otherwise provided herein. All rights, ownership and economic benefits of and relating to the Covered Shares shall
remain vested in and belong to the applicable Stockholder, and Parent shall have no authority to direct the Stockholders in the voting or disposition of any of the Covered Shares, except as otherwise provided herein. 

5.4. Notices. 
 (a) All notices, requests, claims, demands and other communications hereunder shall be in writing and shall be deemed given (a) on the date of delivery, if delivered in person or by facsimile (upon
confirmation of receipt) if received prior to 5:00 p.m. New York Time on a Business Day or, if received after 5:00 p.m. New York Time, on the next following Business Day, or (b) on the first Business Day following the date of dispatch, if
delivered by a recognized overnight courier service (upon proof of delivery), addressed as follows: 
 If to the Stockholders:

 New Mountain Partners II, L.P. 
 New Mountain Affiliated Investors II, L.P. 
 Allegheny New Mountain Partners, L.P.

 787 Seventh Avenue, 49th Floor 
 New York, NY 10019 
 Facsimile: (212) 582-2277 

Attention: Alok Singh 

  
 -9-

 If to the Company: 
 Deltek, Inc. 
 2291 Wood Oak Drive 

Herndon, Virginia 20171 
 Telephone: (703) 734-8606 
 Facsimile: (703) 738-1557 

Attention: Chairman 
 with copies to: 
 Deltek, Inc. 

2291 Wood Oak Drive 
 Herndon, Virginia 20171 
 Telephone: (703) 734-8606 

Facsimile: (703) 738-1557 
 Attention: General Counsel 
 and 

Fried, Frank, Harris, Shriver & Jacobson LLP 
 801 17th St, NW 
 Washington, DC 20006 

Telephone: 202.639.7000 
 Facsimile: 202.639.7003 
 Attention:     Brian Mangino, Esq.

     Richard Steinwurtzel, Esq. 

If to Parent or Sub: 
 c/o Thoma Bravo, LLC 
 600 Montgomery Street, 32nd Floor 

San Francisco, CA 94111 
 Telephone: 415-249-6708 
 Facsimile: (415) 392-6480 

Attention:   Holden Spaht 
    A.J. Rohde 
 with a copy to: 

Kirkland & Ellis LLP 
 300 North LaSalle Street 
 Chicago, IL 60654 

Facsimile: (312) 862-2200 
 Attention:   Gerald T. Nowak, P.C. 

   Theodore A. Peto 

  
 -10-

 (b) A copy of all notices and other communications from Parent or Merger Sub to the Company
(and vice versa) under the Merger Agreement shall be sent at the same time to the Stockholders at the above address, with a copy to its counsel at the above address, and the provisions of this Section 5.4 shall apply to such notices and
communications; provided that no failure to provide such notice to a Stockholder shall relieve such Stockholder of its obligations under this Agreement. 
 5.5. Interpretation. Headings of the Articles and Sections of this Agreement are for the convenience of the parties only, and shall be given no substantive or interpretive effect whatsoever. For
purposes of this Agreement, except as otherwise expressly provided herein or unless the context otherwise requires (i) the meaning assigned to each term defined herein will be equally applicable to both the singular and the plural forms of such
term and vice versa, and words denoting any gender will include all genders as the context requires, (ii) where a word or phrase is defined herein, each of its other grammatical forms will have a corresponding meaning, (iii) the terms
“hereof”, “herein”, “hereunder”, “hereby” and “herewith” and words of similar import will, unless otherwise stated, be construed to refer to this Agreement as a whole and not to any particular
provision of this Agreement, (iv) when a reference is made in this Agreement to an Article or Section without reference to a document, such reference is to an Article or Section of this Agreement, (v) a reference to a subsection without
further reference to a Section is a reference to such subsection as contained in the same Section in which the reference appears, and this rule will also apply to paragraphs and other subdivisions, (vi) the word “include”,
“includes” or “including” when used in this Agreement will be deemed to include the words “without limitation”, unless otherwise specified, (vii) a reference to any party to this Agreement or any other agreement or
document will include such party’s predecessors, successors and permitted assigns, and (viii) a reference to any Law means such Law as amended, modified, codified, replaced or reenacted as of the date hereof, and all rules and regulations
promulgated thereunder as of the date hereof. 
 5.6. Counterparts. This Agreement may be executed by the parties hereto
in separate counterparts, each of which when so executed and delivered shall be an original, but all such counterparts shall together constitute one and the same instrument. Each counterpart may consist of a number of copies hereof each signed by
less than all, but together signed by all of the parties hereto. 
 5.7. Entire Agreement. This Agreement and, to the
extent referenced herein, the Merger Agreement and the Written Consent, together with the several agreements and other documents and instruments referred to herein or therein or annexed hereto or thereto, constitute the entire agreement among the
parties with respect to the subject matter hereof and supersede all prior agreements and understandings among the parties with respect thereto. No addition to or modification of any provision of this Agreement shall be binding upon any party hereto
unless made in writing and signed by all parties hereto. 
 5.8. Governing Law; Consent to Jurisdiction; Waiver of Jury
Trial. 
 (a) This Agreement shall be governed by and construed in accordance with the Laws of the State of Delaware, without
regard to its rules of conflict of laws. Any action against any party to this Agreement arising out of or in any way relating to this Agreement shall 

  
 -11-

 
be brought in any federal or state court located in the State of Delaware in New Castle County, and each of the parties submits to the exclusive jurisdiction of such courts for the purpose of any
such action. Each party irrevocably and unconditionally agrees not to assert (i) any objection which it may ever have to the laying of venue of any such action in any federal or state court located in the State of Delaware in New Castle County,
(ii) any claim that any such action brought in any such court has been brought in an inconvenient forum, and (iii) any claim that such court does not have jurisdiction with respect to such action. 

(b) EACH PARTY ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY WHICH MAY ARISE UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND
DIFFICULT ISSUES, AND THEREFORE EACH SUCH PARTY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE
TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT. EACH PARTY CERTIFIES AND ACKNOWLEDGES THAT (i) NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF
LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, (ii) EACH SUCH PARTY UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THIS WAIVER, (iii) EACH SUCH PARTY MAKES THIS WAIVER VOLUNTARILY, AND (iv) EACH SUCH PARTY HAS BEEN INDUCED TO
ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION. 
 5.9. Specific
Performance. Each of the Stockholders hereby acknowledge and agree that Parent would suffer irreparable damage in the event that any of the obligations of the Stockholders in this Agreement were not performed in accordance with its specific
terms or if the Agreement was otherwise breached by the Stockholders. Accordingly, the Stockholders agree that Parent shall be entitled to specific performance, an injunction, restraining order and/or such other equitable relief, in addition to any
other rights and remedies existing in its favor at law or in equity, as a court of competent jurisdiction may deem necessary or appropriate to enforce its rights and each of the Stockholders’ obligations hereunder (without posting of bond or
other security). These injunctive remedies are cumulative and in addition to any other rights and remedies Parent may have at law or in equity. 
 5.10. Amendment; Waiver. This Agreement may only be amended, modified or supplemented by an agreement in writing signed by each party hereto. No waiver by any party of any of the provisions hereof
shall be effective unless explicitly set forth in writing and signed by the party so waiving. No waiver by any party shall operate or be construed as a waiver in respect of any failure, breach or default not expressly identified by such written
waiver, whether of a similar or different character, and whether occurring before or after that waiver. No failure to exercise, or delay in exercising, any right, remedy, power or privilege arising from this Agreement shall operate or be construed
as a waiver thereof; nor shall any single or partial exercise of any right, remedy, power or privilege hereunder preclude any other or further exercise thereof or the exercise of any other right, remedy, power or privilege. 

  
 -12-

 5.11. Severability. If the final judgment of a court of competent jurisdiction
declares that any term or provision of this Agreement is invalid or unenforceable, the parties hereto agree that the court making such determination shall have the power to limit the term or provision, to delete specific words or phrases or to
replace any invalid or unenforceable term or provision with a term or provision that is valid and enforceable and that comes closest to expressing the intention of the invalid or unenforceable term or provision, and this Agreement shall be
enforceable as so modified. In the event such court does not exercise the power granted to it in the prior sentence, the parties hereto agree to replace such invalid or unenforceable term or provision with a valid and enforceable term or provision
that will achieve, to the extent possible, the economic, business and other purposes of such invalid or unenforceable term. Any term or provision of this Agreement that is invalid or unenforceable in any jurisdiction shall not affect the validity or
enforceability of the remaining terms and provisions of this Agreement or the validity or enforceability of the offending term or provision in any other situation or in any other jurisdiction. 

5.12. Successors and Assigns; Third Party Beneficiaries. Neither this Agreement nor any of the rights or obligations of any party
under this Agreement shall be assigned, in whole or in part (by operation of law or otherwise), by any party without the prior written consent of the other parties hereto. Subject to the foregoing, this Agreement shall bind and inure to the benefit
of and be enforceable by the parties hereto and their respective successors and permitted assigns. Nothing in this Agreement, express or implied, is intended to confer on any Person other than the parties hereto or their respective successors and
permitted assigns any rights, remedies, obligations or liabilities under or by reason of this Agreement. 
 5.13. Stockholder
Capacity. The restrictions and covenants of each Stockholder hereunder shall not be binding, and shall have no effect, in any way with respect to any director or officer of the Company or any of its Subsidiaries in such Person’s capacity as
such a director or officer, nor shall any action taken by any such director or officer in his or her capacity as such be deemed a breach by a Stockholder of this Agreement. 
 [Remainder of this page intentionally left blank] 

  
 -13-

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be signed (where
applicable, by their respective officers or other authorized Person thereunto duly authorized) as of the date first written above. 
  

			
	NEW MOUNTAIN PARTNERS II, L.P.
		
	By:	 	New Mountain Investments, L.L.C.
		 	its General Partner
		
	By:	 	 /s/ Alok Singh

		 	Name: Alok Singh
		 	Title: Authorized Signatory
	
	NEW MOUNTAIN AFFILIATED INVESTORS II, L.P.
		
	By:	 	New Mountain Investments, L.L.C.
		 	its General Partner
		
	By:	 	 /s/ Alok Singh

		 	Name: Alok Singh
		 	Title: Authorized Signatory
	
	ALLEGHENY NEW MOUNTAIN PARTNERS, L.P.
		
	By:	 	New Mountain Investments II, L.L.C.
		 	its General Partner
		
	By:	 	 /s/ Alok Singh

		 	Name: Alok Singh
		 	Title: Authorized Signatory

 [Signature Page to Written Consent and Voting Agreement] 

 
			
	PROJECT DIAMOND HOLDINGS CORPORATION
		
	By:	 	 /s/ Holden Spaht

		 	Name: Holden Spaht
		 	Title: President

 [Signature Page to Written Consent and Voting Agreement] 

 
			
	DELTEK, INC.
		
	By:	 	 /s/ Kevin T. Parker

		 	Name: Kevin T. Parker
		 	Title: Chairman, CEO

 [Signature Page to Written Consent and Voting Agreement]

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