EX-10.1





 Exhibit 10.1 

TERMINATION AGREEMENT 

This TERMINATION AGREEMENT (this “Termination Agreement”) with respect to the Call Option Confirmations (as defined below) is
made as of August [•], 2021 between [DEALER] (“Dealer”) and Proofpoint, Inc. (“Counterparty”), a Delaware corporation. 

WHEREAS, Counterparty issued $920,000,000 principal amount of 0.25% Convertible Senior Notes due 2024 (the “Convertible
Notes”) pursuant to an Indenture dated as of August 23, 2019 between Counterparty and Wells Fargo Bank, National Association, as trustee; 

WHEREAS, Dealer and Counterparty are parties to the base capped call option transaction (as amended, modified or supplemented, the
“Base Call Option Transaction”) evidenced by the letter agreement between Dealer and Counterparty, dated as of August 20, 2019 (as amended, modified or supplemented, the “Base Call Option Confirmation”), and
the additional capped call option transaction (as amended, modified or supplemented, the “Additional Call Option Transaction” and, together with the Base Call Option Transaction, the “Call Option Transactions”)
evidenced by the letter agreement between Dealer and Counterparty, dated as of August 21, 2019 (as amended, modified or supplemented, the “Additional Call Option Confirmation” and, together with the Base Call Option
Confirmation, the “Call Option Confirmations”); and 
 WHEREAS, the Counterparty has requested the full termination of both
the Base Call Option Transaction and the Additional Call Option Transaction upon consummation of the acquisition of Counterparty by Project Kafka Parent, LLC, a Delaware limited liability company (“Parent”), pursuant to the
Agreement and Plan of Merger, dated as of April 25, 2021, by and among Parent, Project Kafka Merger Sub, Inc., a Delaware corporation and wholly owned subsidiary of Parent, and Counterparty (the “Merger Agreement”). 

NOW, THEREFORE, in consideration of their mutual covenants contained herein and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto, intending to be legally bound, hereby mutually covenant and agree as follows: 
 1.
Defined Terms. Any capitalized term not otherwise defined herein shall have the meaning set forth for such term in the Call Option Confirmations. 

2. Termination of Transactions and Confirmations. Notwithstanding anything to the contrary in the Call Option Confirmations, Counterparty and
Dealer agree that, upon the occurrence of the Closing Date (as defined in the Merger Agreement), (i) the Base Call Option Transaction shall automatically terminate and all of the respective rights and obligations of the parties under the Base Call
Option Confirmation shall be terminated, cancelled and extinguished, (ii) the Additional Call Option Confirmation shall automatically terminate and all of the respective rights and obligations of the parties under the Additional Call Option
Confirmation shall be terminated, cancelled and extinguished and (iii) in consideration of the foregoing, Dealer shall pay to Counterparty, in immediately available funds to the account specified below, cash in US Dollars in an amount equal to
$[•] no later than 11:00 a.m. (New York City time) on the Closing Date (as defined in the Merger Agreement). 
 3. Effectiveness. The
termination of the Call Option Transactions and the Call Option Confirmations as contemplated by this Termination Agreement shall be effective upon the occurrence of the Closing Date (as defined in the Merger Agreement). Counterparty shall notify
Dealer on or before the Closing Date (as defined in the Merger Agreement) of such Closing Date, which notice shall be provided via email to the email address set forth in Section 6 below. 

4. Further Adjustments; Termination. 

(a) Prior to any termination of this Termination Agreement, Dealer agrees that it shall not modify, amend, adjust, cancel or terminate, or
suspend its performance under, any of the Call Option Confirmations, including but not limited to declaring an Early Termination Date thereunder. 

(b) If the Closing Date (as defined in the Merger Agreement) has not occurred and the Merger Agreement is terminated in accordance with its
terms, this Termination Agreement shall immediately terminate and shall be of no force and effect and each of the Call Option Confirmations shall remain in full force and effect pursuant to the terms thereof in effect immediately prior to the
execution of this Termination Agreement. 

  
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 5. Representations and Warranties of Counterparty. Each of Counterparty and Dealer represents
and warrants to the other party on the date hereof that: 
 (a) it is duly organized and validly existing under the laws of the jurisdiction
of its organization or incorporation and, if relevant under such laws, in good standing; 
 (b) it has the power to execute this Termination
Agreement and any other documentation relating to this Termination Agreement, to deliver this Termination Agreement and each such other document relating thereto (if any) and to perform its obligations hereunder and thereunder (as applicable) and
has taken all necessary action to authorize such execution, delivery and performance; 
 (c) such execution, delivery and performance do not
violate or conflict with any law applicable to it, any provision of its constitutional documents, any order or judgment of any court or other agency of government applicable to it or any of its assets or any contractual restriction binding on or
affecting it or any of its assets; 
 (d) all governmental and other consents that are required to have been obtained by it with respect to
this Termination Agreement have been obtained and are in full force and effect and all conditions of any such consents have been complied with; 

(e) its obligations under this Termination Agreement constitute its legal, valid and binding obligations, enforceable in accordance with their
respective terms (subject to applicable bankruptcy, reorganization, insolvency, moratorium or similar laws affecting creditors’ rights generally and subject, as to enforceability, to equitable principles of general application (regardless of
whether enforcement is sought in a proceeding in equity or at law)); and 
 (f) on the date hereof, it remains a party to the Call Option
Transactions to the full extent as on the date of execution thereof and it has not assigned, purported to assign or made any attempt to assign, any interest in the Call Option Transactions to any third party. 

6. Notices. For purposes of this Termination Agreement, the addresses for notices or communications to the parties shall be: 

(a) Counterparty: 

[•] 
 (b) Dealer: 

[•] 
 7. Account Details. For
purposes of this Termination Agreement, the account for payments to Counterparty shall be: 
  

			
	Bank:	  	[•]
	ABA#:	  	[•]
	Acct No.:	  	[•]
	Beneficiary:	  	[•]
	SWIFT ID:	  	[•]



  
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 8. Governing Law. THIS TERMINATION AGREEMENT AND ANY CLAIM, CONTROVERSY OR DISPUTE ARISING
UNDER OR RELATED TO THIS TERMINATION AGREEMENT SHALL BE GOVERNED BY THE LAWS OF THE STATE OF NEW YORK. THE PARTIES HERETO IRREVOCABLY SUBMIT TO THE EXCLUSIVE JURISDICTION OF THE COURTS OF THE STATE OF NEW YORK AND THE UNITED STATES COURT FOR THE
SOUTHERN DISTRICT OF NEW YORK IN CONNECTION WITH ALL MATTERS RELATING HERETO AND WAIVE ANY OBJECTION TO THE LAYING OF VENUE IN, ANY CLAIM OF INCONVENIENT FORUM WITH RESPECT TO, THESE COURTS. 

9. Waiver of Trial by Jury. EACH OF COUNTERPARTY AND DEALER HEREBY IRREVOCABLY WAIVES (ON ITS OWN BEHALF AND, TO THE EXTENT PERMITTED BY
APPLICABLE LAW, ON BEHALF OF ITS STOCKHOLDERS) ALL RIGHT TO TRIAL BY JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM (WHETHER BASED ON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR RELATING TO THE TRANSACTION OR THE ACTIONS OF DEALER OR ITS
AFFILIATES IN THE NEGOTIATION, PERFORMANCE OR ENFORCEMENT HEREOF. 
 10. Amendment; Continuing Effect. This Termination Agreement may not
be modified, amended or supplemented, except in a written instrument signed by each party hereto. Except as set forth herein, all other terms of the Call Option Transactions and provisions of the Call Option Confirmations shall remain and continue
in full force and effect and are hereby confirmed in all respects. 
 11. Counterparts. This Termination Agreement may be executed by any one
or more of the parties hereto in any number of counterparts, each of which shall be deemed to be an original, but all such counterparts shall together constitute one and the same instrument. Counterparts may be delivered via facsimile, electronic
mail (including any electronic signature covered by the U.S. federal ESIGN Act of 2000, Uniform Electronic Transactions Act, the Electronic Signatures and Records Act or other applicable law, e.g., www.docusign.com) or other transmission method and
any counterpart so delivered shall be deemed to have been duly and validly delivered and be valid and effective for all purposes. 
 [The
remainder of page intentionally left blank] 

  
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 IN WITNESS WHEREOF the parties have executed this Termination Agreement with effect from the
date specified on the first page of this Termination Agreement. 
  

			
	[DEALER]
		
	By:	 	  

		 	Name:
		 	 Title:


 [Signature Page to Termination Agreement] 













			
	Proofpoint, Inc.
		
	By:	 	  

		 	Name:
		 	Title: 

 [Signature Page to Termination Agreement]