Document:

Exhibit 10.48

 Exhibit 10.48 
 EXECUTION COPY 
 RELEASE 
 This Release (“Release”) is made as of April 22, 2005 by and among Deltek Systems, Inc., a Virginia corporation
(“Deltek”) and the persons listed on the signature pages hereto under the heading “Sellers” (each, a “Seller,” and collectively, the “Sellers”). 
 WHEREAS, the Sellers, Deltek, New Mountain Partners II, L.P., a Delaware limited partnership (“NMP”), New Mountain Affiliated Investors
II, L.P., a Delaware limited partnership (“NMAI”), and Allegheny New Mountain Partners, L.P., a Delaware limited partnership (together with NMP and NMAI, the “NMP Entities”), have entered into that certain
Recapitalization Agreement, dated as of December 23, 2004 (as amended, the “Recapitalization Agreement”); and 
 WHEREAS, the Sellers acknowledge that the Release and other covenants and agreements by the Sellers contained herein are an essential element of the Contemplated Transactions; and that the execution and delivery by the Sellers of this
Release is a condition to the NMP Entities’ obligation to consummate the Contemplated Transactions (capitalized terms not herein defined having the meanings ascribed to such terms in the Recapitalization Agreement). 
 NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties agree as follows:

 1. Release. Except for the Excluded Claims (as defined in Section 2), each Seller, on its own behalf and on behalf of its
successors and assigns, hereby releases, acquits and forever discharges Deltek and its subsidiaries and affiliates, the former and present officers, directors, employees, agents, employee benefit plans (and the fiduciaries thereof) and
representatives of any of them, and the successors and assigns of each of the foregoing (the “Released Parties”) from any and all claims, actions, causes of action, suits, rights, debts, agreements, damages, injuries, losses, costs,
expenses (including attorneys fees), and demands whatsoever and all consequences thereof (collectively, “Claims”), at law or in equity, which such Seller, in its capacity as a stockholder, option holder or holder of a stock
appreciation right of Deltek, as an employee, officer or director of Deltek or any of its subsidiaries, or in any other capacity (including, without limitation, any individual capacity), ever had, now has, or which it or its successors and assigns
shall or may have, against any of the Released Parties, whether known or unknown, which arise out of or relate to any act, transaction, agreement, event or omission occurring prior to the date hereof. 
 2. Excluded Claims. The Sellers do not release the Released Parties from, and specifically reserve all of their respective rights related to (the
following, collectively, the “Excluded Claims”): 
 (a) any Claims related to occurrences after the date hereof; 

(b) any Claims under the Recapitalization Agreement, any Transaction Document, the Conversion SAR Amendments, the Executive Severance Agreements or
the Severance Agreements; 

 (c) any Claims arising prior to Closing for (x) compensation accrued to any Seller but unpaid as of
Closing, (y) accrued and unpaid vacation and any other employee benefits to which any Seller was entitled prior to the date hereof but which remain unpaid, and (z) reimbursement of expenses in accordance with the policies and past
practices of Deltek; 
 (d) any amounts owed under any employee benefit plan (within the meaning of Section 3(2) of ERISA) of Deltek or
any of its subsidiaries to which any Seller was party. 
 3. General Provisions. 
 (a) This Release is governed by and shall be construed in accordance with the laws of the State of New York, without regard to the conflict of law
provisions thereof. 
 (b) By signing this Release, the Sellers represent and warrant to Deltek that they have freely and voluntarily entered
into this Release with a full understanding of its contents and meaning after consultation and review of this Release with counsel of their choosing and have each had a reasonable period of time within which to consider this Release. 
 (c) This Release contains the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior agreements,
arrangements and communications (written and verbal) between the parties concerning matters covered by this Release. 
 (d) This Release
shall bind the parties hereto and their respective successors and assigns and others who may seek to assert a claim by or through them, and shall inure to the benefit of the parties hereto, and their respective successors and assigns. In addition,
each Released Party not a signatory hereto shall be a third party beneficiary of this Release and shall be entitled to enforce this Release. 
 (e) The Sellers, severally and not jointly, represent and warrant to the Released Parties that they have not conveyed, transferred or otherwise assigned to any third parties any of their respective rights, interests or claims relating to
the Released Parties or any other agreements between them. 
 (f) Effective upon the execution at Closing of this Release by Deltek on the
one hand and any Seller on the other hand, this Release shall be a binding and enforceable agreement against such Seller. The failure of any Seller to execute a counterpart hereto shall not affect the binding and enforceable nature of this Release
with respect to any other Seller who executes and delivers a counterpart hereto. 
 (g) This Release may be executed either as one document
or in separate counterparts, each of which shall be an original and all of which taken together shall constitute one and the same Release. 
  

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 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

					
	DELTEK SYSTEMS, INC.
			
	By:	 	 /s/ Kenneth E. deLaski
	 	
	Name:	 	Kenneth E. deLaski	 	
	Title:	 	CEO	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

			
	 /s/ Kenneth E. deLaski
	 	
	Kenneth E. deLaski	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

			
	 /s/ Donald deLaski
	 	
	Donald deLaski	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

			
	 /s/ Tena R. deLaski
	 	
	Tena R. deLaski	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

					
	Kenneth E. deLaski and Tena R. deLaski, JT TEN
			
	By:	 	 /s/ Kenneth E. deLaski
	 	
	Name:	 	Kenneth E. deLaski	 	
			
	By:	 	 /s/ Tena R. deLaski
	 	
	Name:	 	Tena R. deLaski	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

					
	The Daphne Jean deLaski Irrevocable Trust
			
	By:	 	 /s/ Kenneth E. deLaski
	 	
	Name:	 	Kenneth E. deLaski	 	
	Its:	 	 Trustee
	 	
			
	By:	 	 /s/ Tena R. deLaski
	 	
	Name:	 	Tena R. deLaski	 	
	Its:	 	 Trustee
	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

					
	The Daphne Jean deLaski S Trust
			
	By:	 	 /s/ Kenneth E. deLaski
	 	
	Name:	 	Kenneth E. deLaski	 	
	Its:	 	 Trustee
	 	
			
	By:	 	 /s/ Tena R. deLaski
	 	
	Name:	 	Tena R. deLaski	 	
	Its:	 	 Trustee
	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

					
	The Dana Nancy deLaski Irrevocable Trust
			
	By:	 	 /s/ Kenneth E. deLaski
	 	
	Name:	 	Kenneth E. deLaski	 	
	Its:	 	 Trustee
	 	
			
	By:	 	 /s/ Tena R. deLaski
	 	
	Name:	 	Tena R. deLaski	 	
	Its:	 	 Trustee
	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

					
	The Dana Nancy deLaski S Trust
			
	By:	 	 /s/ Kenneth E. deLaski
	 	
	Name:	 	Kenneth E. deLaski	 	
	Its:	 	 Trustee
	 	
			
	By:	 	 /s/ Tena R. deLaski
	 	
	Name:	 	Tena R. deLaski	 	
	Its:	 	 Trustee
	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

			
	 /s/ David deLaski
	 	
	David deLaski	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

					
	Edward Grubb and Kathleen Grubb, JTWROS
			
	By:	 	 /s/ Edward Grubb
	 	
	Name:	 	Edward Grubb	 	
			
	By:	 	 /s/ Kathleen Grubb
	 	
	Name:	 	Kathleen Grubb	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

			
	 /s/ Eric J. Brehm
	 	
	Eric J. Brehm	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

			
	 /s/ Margaret F. Flaherty
	 	
	Margaret F. Flaherty	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

			
	 /s/ Robert P. Stalilonis
	 	
	Robert P. Stalilonis	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

			
	 /s/ Patricia A. Kelly
	 	
	Patricia A. Kelly	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

					
	Joseph H. Jezior and Diane M. Jezior, JT TEN
			
	By:	 	 /s/ Joseph H. Jezior
	 	
	Name:	 	Joseph H. Jezior	 	
			
	By:	 	 /s/ Diane M. Jezior
	 	
	Name:	 	Diane M. Jezior	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

			
	The Onae Trust
		
	By:	 	 /s/ Robert A. Jacobs, by John K. Bale as Power of Attorney

	Name:	 	Robert A. Jacobs
	Its:	 	Trustee

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGES] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

					
	Brian E. Daniell and Michelle R. Daniell, JTWROS
			
	By:	 	 /s/ Brian E. Daniell
	 	
	Name:	 	Brian E. Daniell	 	
			
	By:	 	 /s/ Michelle R. Daniell
	 	
	Name:	 	Michelle R. Daniell	 	

 [SIGNATURE PAGES OF SELLERS 
 CONTINUE ON FOLLOWING PAGE] 

 IN WITNESS WHEREOF, each of the parties hereto has executed and delivered this Release or has caused this
Release to be executed and delivered on its behalf as of the date first written above. 
  

			
	 /s/ Sean Hickey
	 	
	Sean HickeyExhibit 10.49

 Exhibit 10.49 
 Deltek Systems, Inc. 
 Stock Purchase Agreement 
 STOCK PURCHASE AGREEMENT, dated
[                    ] (the “Agreement”), by and between Deltek Systems, Inc., a Virginia corporation (the
“Company”), and [                    ] (“Purchaser”). 
 Recitals 
 WHEREAS, the Company
desires to sell to Purchaser, and Purchaser desires to purchase, shares of the Company’s common stock, par value $0.001 (the “Common Stock”); and 
 WHEREAS, as a condition to such sale and purchase, Purchaser will become a party to the Company’s Shareholders’ Agreement by executing a
Joinder Agreement and a counterpart signature page to the Company’s Shareholders’ Agreement (such Joinder Agreement and counterpart signature page to the Company’s Shareholders’ Agreement being referred to collectively herein as
the “Shareholders’ Agreement”). 
 NOW, THEREFORE, in consideration of the premises and the mutual covenants set
forth in this Agreement, and for good and valuable consideration, receipt of which is hereby acknowledged, the Company and Purchaser, intending to be legally bound, hereby agree as follows: 
 1. Purchase of Shares. 
 (a) Sale and Purchase. On the terms and conditions set forth in this Agreement, the Company agrees to sell to Purchaser, and Purchaser agrees to purchase from the Company,
[                    ] shares of Common Stock (the “Shares”). 
 (b) Consideration. The Purchaser agrees to pay for the Shares an aggregate purchase price of
$[                    ] (the “Purchase Price”). 
 2. Closing of the Purchase. 
 (a) Closing. The closing of the transaction contemplated by this Agreement (the “Closing”) shall occur on
[                    ] (the “Closing Date”) at the offices of Fried, Frank, Harris, Shriver & Jacobson LLP,
One New York Plaza, New York, New York. 
 (b) Deliveries. At the Closing, (i) the Company shall deliver to
Purchaser a certificate representing the Shares and a copy of the Shareholders’ Agreement executed by the Company, New Mountain Partners II, L.P., New Mountain Affiliated Investors II, L.P. and Allegheny New Mountain Partners, L.P., and
(ii) Purchaser shall deliver to the Company a copy of the Shareholders’ Agreement executed by the Purchaser and, where applicable, his spouse, and a good check or wire transfer of funds in an amount equal to the Purchase Price. 

 (c) Conditions to Closing. 
 i. Conditions to Both Parties’ Obligations. The obligations of the parties to consummate the transactions contemplated by this
Agreement are subject to the fulfillment prior to or at the Closing of the condition (which may be waived by the parties in accordance herewith) that, on the Closing Date, there shall not be in effect any order issued by a court of competent
jurisdiction restraining or prohibiting consummation of the transactions contemplated by this Agreement. 
 ii. Conditions
to Company’s Obligations at Closing. Each and every obligation of the Company to be performed at the Closing shall be subject to the conditions precedent that the representations made by Purchaser in this Agreement shall be accurate in all
material respects on and as of the Closing Date with the same effect as though such representations had been made or given on or as of the Closing Date and that Purchaser shall have performed all covenants required to be performed at or prior to the
Closing. 
 iii. Conditions to Purchaser’s Obligations at Closing. Each and every obligation of Purchaser to be
performed at the Closing shall be subject to the conditions precedent that the representations made by the Company in this Agreement shall be accurate in all material respects on and as of the Closing Date with the same effect as though such
representations had been made or given on or as of the Closing Date and that the Company shall have performed all covenants required to be performed at or prior to the Closing. 
 (d) Survival. All representations made by the Company and Purchaser shall survive the Closing. 
 3. Representations and Warranties of Purchaser. Purchaser represents and warrants to the Company as follows: 
 (a) Purchaser has the legal capacity to execute, deliver and perform this Agreement and the Shareholders’ Agreement and to consummate
the transactions contemplated hereby. This Agreement and, when executed and delivered, the Shareholders’ Agreement, constitute valid and binding obligations of Purchaser, enforceable against Purchaser in accordance with the terms hereof and
thereof, except to the extent that such enforceability may be limited by bankruptcy, insolvency or other similar laws or by general equitable principles. 
 (b) Purchaser’s principal address is listed below Purchaser’s signature on the signature page hereto. 
 (c) Purchaser is acquiring the Shares for investment purposes only for Purchaser’s own account, and not as a nominee or agent, and not with a view to the resale or distribution of all or any part of the Shares.
Purchaser is prepared to hold the Shares for an indefinite period and has no present intention of selling, granting any participation in, or otherwise distributing any of the Shares. Purchaser does not have any contract, undertaking, agreement or
arrangement with any person to sell, transfer or grant a participating interest in, any of the Shares. 
  

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 (d) Purchaser is knowledgeable about the Company, and Purchaser has sufficient knowledge
and experience in financial and business matters in general that Purchaser is capable of evaluating the Company and the business thereof and the risk and merits of investment in the Company and of making an informed investment decision thereon.

 (e) Purchaser has been furnished with, and has had access to, such information as Purchaser considers necessary or
appropriate for deciding whether to invest in the Shares, and Purchaser has had an opportunity to ask questions and receive answers from the Company regarding the terms and conditions of the purchase of the Shares. 
 (f) Purchaser has been informed, understands and acknowledges that Purchaser’s investment in the Shares is a speculative investment
and involves a high degree of risk, and that the amount realized on such investment may be less than the amount invested. In evaluating Purchaser’s investment in the Shares, Purchaser consulted with investment, legal and tax advisors and
concluded that such investment is not inconsistent with and is appropriate in light of Purchaser’s overall investment objectives, financial condition and liquidity requirements. Purchaser is familiar with the nature of and risks attendant to an
investment of the type contemplated hereby and the tax aspects of an investment of such type, is financially and otherwise capable of bearing the economic risk of such investment, and can afford the loss of the total amount of such investment.

 (g) Purchaser does not have an overall commitment to investments which are not readily marketable that is disproportionate
to Purchaser’s net worth, and Purchaser’s investment in the Shares will not cause such overall commitment to become excessive. Purchaser has adequate net worth and means of providing for Purchaser’s current needs and contingencies and
has no need for liquidity in such investment. 
 (h) Purchaser understands that the Shares are not being registered under the
Securities Act of 1933, as amended (the “Securities Act”), or any state securities laws in reliance upon specific exemptions thereunder for transactions not involving any public offering, and the availability of such exemptions
depends in part upon the accuracy of Purchaser’s representations and warranties herein and that the Shares are characterized as “restricted securities” under federal securities laws and that under such laws and applicable regulations
such securities may be resold without registration under the Securities Act only in certain limited circumstances. Purchaser also understands that there is no public market for the Shares and that the sale or transfer of the Shares is also
restricted by the terms of the Shareholders’ Agreement and applicable state law. 
 (i) The sale of the Shares
contemplated by this Agreement does not conflict with, or result in a breach of, or a default under, or give rise to a right of acceleration under, any agreement or instrument to which Purchaser is a party. 
 (j) Purchaser has initialed the appropriate box below his signature indicating whether Purchaser is an “accredited investor” as
such term is defined on Exhibit B hereto. 
 (k) Purchaser has received a copy of the Shareholders’
Agreement and has had an opportunity to review and ask questions about such Shareholders’ Agreement. Purchaser 

  

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understands that the Shares will be bound by all of the terms, conditions, restrictions and obligations set forth in the Shareholders’ Agreement as the
same may be amended from time to time. 
 4. Representations and Warranties of the Company. The Company represents and warrants to
Purchaser as follows: 
 (a) All corporate action on the part of the Company, its officers, directors and shareholders
necessary for the authorization, execution and delivery of, and the performance of all obligations of the Company under, this Agreement has been taken or will be taken prior to the Closing, and this Agreement constitutes valid and legally binding
obligations of the Company, enforceable in accordance with its terms, except as may be limited by (i) applicable bankruptcy, insolvency, reorganization or others laws of general application relating to or affecting the enforcement of
creditors’ rights generally and (ii) the effect of rules of law governing the availability of equitable remedies. 
 (b) The sale of the Shares contemplated by this Agreement does not conflict with, or result in a breach of, or a default under, or give rise to a right of acceleration under, the Company’s Bylaws or Articles of Incorporation, or any
agreement or instrument to which Purchaser is a party. 
 5. Section 83(b) Election and Tax Withholding. 
 (a) Purchaser understands that (i) the acquisition of the Shares may result in adverse tax consequences that may be avoided or
mitigated by filing an election under Section 83(b) of the Internal Revenue Code of 1986, as amended; (ii) such election may be filed only within 30 days after the date of purchase; and (iii) it is his sole responsibility, and not the
Company’s, to file a timely election under Section 83(b). Purchaser covenants and agrees to provide the Company a copy of Purchaser’s election under Section 83(b) promptly after such election is made. An election form for the
purpose of making such election is attached hereto as Exhibit A. 
 (b) The Company shall have the right to
deduct from any compensation or any other payment of any kind (including withholding the issuance of shares of Common Stock) due to Purchaser the amount of any federal, state or local taxes required by law to be withheld as a result of the purchase
of the Shares. 
 6. No Retention Rights. Nothing in this Agreement shall confer upon Purchaser any right to continue to be employed
by the Company for any period of specific duration or interfere with or otherwise restrict in any way the rights of the Company (or any subsidiary of the Company employing or retaining the Purchaser) or of Purchaser, which rights are hereby
expressly reserved by each, to terminate his employment at any time and for any reason, with or without cause. 
 7. Legends.

 (a) All certificates evidencing the Shares shall bear the following legend: 
  

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 “THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR OTHERWISE DISPOSED OF EXCEPT IN COMPLIANCE WITH SUCH ACT OR LAWS AND EXCEPT IN ACCORDANCE WITH THE PROVISIONS OF A
SHAREHOLDERS’ AGREEMENT WITH THE COMPANY, A COPY OF WHICH IS AVAILABLE FOR INSPECTION AT THE OFFICES OF THE COMPANY.” 
 (b) If required by the authorities of any state in connection with the issuance of the Shares, the legend or legends required by such state authorities shall also be endorsed on all such certificates. 
 8. Entire Agreement. This Agreement and the Shareholders’ Agreement contain the entire agreement between the parties with respect to the
Shares purchased hereunder. Any oral or written agreements, representations, warranties, written inducements, or other communications made prior to the execution of this Agreement with respect to the Shares purchased hereunder shall be void and
ineffective for all purposes. 
 9. Governing Law. The validity, construction and effect of this Agreement shall be determined
exclusively in accordance with the laws of the State of New York, without regard to its provisions concerning the applicability of laws of other jurisdictions. Any suit with respect hereto will be brought in courts of the State of New York in New
York county and the United States District Court for the Southern District of New York, and Purchaser hereby agrees and submits to the personal jurisdiction and venue thereof. 
 10. Counterparts. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together
shall constitute one and the same instrument. 
 11. Headings. The headings in this Agreement are for reference purposes only and
shall not affect the meaning or interpretation of this Agreement. 
 12. Waiver of Jury Trial. EACH PARTY HERETO HEREBY WAIVES, TO THE
FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY SUIT, ACTION OR PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS AGREEMENT AND EXECUTIVE’S EMPLOYMENT BY
THE COMPANY. 
 13. Expenses. Each party hereto shall pay all costs and expenses that such party incurs with respect to the
negotiation, execution, delivery and performance of this Agreement. 
 14. Successors and Assigns; Amendment. The terms and conditions
of this Agreement shall inure to the benefit of and be binding upon the respective successors and assigns of the parties. Nothing in this Agreement, express or implied, is intended to confer upon any party other than the parties hereto or their
respective successors and assigns any rights, remedies, obligations or liabilities under or by reason of this Agreement, except expressly as provided in this Agreement. Any term of this Agreement may be amended and the observance 

  

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of any term of this Agreement may be waived (either generally or in a particular instance and either retroactively or prospectively) only with the written
consent of the Company and Purchaser. 
 (This space left blank intentionally) 
  

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 IN WITNESS WHEREOF, each party hereto has caused this Agreement to be duly executed as of the date first
written above. 
  

			
	Deltek Systems, Inc.
		
	By:	 	  
	Name:	 	
	Title:	 	

  

	
	Please print address:
	
	   
	
	   
	
	   
	
	 ̈  Purchaser is an Accredited Investor
	
	 ̈  Purchaser is not an Accredited Investor

 EXHIBIT A 
 SECTION 83(b) ELECTION 
 This statement is made under Section 83(b) of the Internal Revenue Code of 1986, as
amended, pursuant to Treasury Regulations Section 1.83-2. 
 (1) The taxpayer who performed the services is: 
  

			
	Name:	 	
		
	Address:	 	  
		
		 	  
		
		 	  

			
		
	Social Security No.:	 	  

 (2) The property with respect to which the election is made is
[            ] shares (the “Shares”) of the common stock of Deltek Systems, Inc. (the “Company”). 
 (3) The Shares were transferred on [            ]. 
 (4) The taxable year for which the election is made is the calendar year
[            ]. 
 (5) In the event that the taxpayer terminates his or
her services with the Company other than for “Good Reason” (as defined in the Company’s Shareholders’ Agreement) within two years from the date of transfer, the Shares are subject to repurchase by the Company at the lesser of the
taxpayer’s cost or the Shares’ fair market value. In addition, the Shares are subject to repurchase by the Company if the taxpayer engages in specified prohibited or competitive activities during employment or a specified period
thereafter, or is convicted of a crime against the Company or an affiliate. The Shares are subject to certain “bring-along” obligations pursuant to which certain stockholders can require in connection with a sale of their common stock that
a proportionate share of a taxpayer’s Shares be sold in the same transaction. The Shares generally may not be sold, transferred, assigned, exchanged, pledged, encumbered or otherwise disposed of, except under certain limited circumstances to
certain permitted transferees, and then only if the transferee agrees to be bound by the terms of the Shareholders’ Agreement. 
 All
restrictions described in the preceding paragraph will terminate on the date on which certain stockholders and their affiliates cease to own in the aggregate directly or indirectly at least 15% of the then outstanding securities of the Company
having the power to vote in the election of directors of the Company. 
 (6) The fair market value of such Shares at the time of transfer
(determined without regard to any restriction other than a restriction which by its terms will never lapse) is $[            ] per share. 

 (7) The amount paid for such Shares is
$[            ] per share. 
 (8) A copy of this statement was furnished
to the Company, for whom taxpayer rendered the services that gave rise to the transfer of such Shares. 
 (9) This statement is executed on
[            ]. 
  

					
			
	   	 		 	   
	Taxpayer	 		 	Spouse (if any)

 Note: This election must be filed with the Internal Revenue Service Center with which the Purchaser files his or
her Federal income tax returns and must be filed within 30 days after the date of purchase. This filing should be made by registered or certified mail, return receipt requested. In addition, a copy of this form must be attached to the
taxpayer’s [            ] Federal and state tax returns. The taxpayer should also retain copies of the form and the mailing receipts for his or her records. The taxpayer
understands that the foregoing election may not be revoked except with the consent of the Internal Revenue Service. 

 EXHIBIT B 
 Accredited Investor Definition 
 The term “Accredited Investor” as used herein refers to:

 a. A person or entity who is a director or executive officer of the Company; 
 b. Any private business development company as defined in Section 202(a)(22) of the Investment Advisers Act of 1940; 
 c. Any organization described in Section 501(c)(3) of the Internal Revenue Code, corporation, Massachusetts or similar business trust, or
partnership, not formed for the specific purpose of acquiring the securities offered, with total assets in excess of $5,000,000; 
 d. Any
natural person who had an individual net worth, or joint worth with that person’s spouse, at the time of his purchase which exceeds $1,000,000; 
 e. Any natural person who had an individual income in excess of $200,000 in each of the two most recent years or joint income with that person’s spouse in excess of $300,000 in each of those years and has a
reasonable expectation of reaching the same income level in the current year; 
 f. Any trust, with total assets in excess of $5,000,000, not
formed for the specific purpose of acquiring the securities offered, whose purchase is directed by a person who has such knowledge and experience in financial and business matters that he is capable of evaluating the merits and risks of the
prospective investment; or 
 g. Any entity in which all of the equity owners are accredited investors. 
 As used in this definition, the term “net worth” means the excess of total assets over total liabilities. For the purpose of determining a
person’s net worth, the principal residence owned by an individual should be valued at fair market value, including the cost of improvements, net of current encumbrances.

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