Document:

Severance and Change in Control Agreement -- Registrant and F. William Conner

 EXHIBIT 10.23 
  
 SEVERANCE AND CHANGE IN CONTROL AGREEMENT 
  
 AGREEMENT, made and entered into as of the 2nd day of February, 2004 by and between Entrust Inc., a Maryland corporation
(together with its successors and assigns, the “Company”), and F. William Conner (the “Executive”). 
  
 Background 
  
 Executive is an employee of the Company serving as its Chief Executive Officer. 
  
 The Board of Directors of the Company (the “Board”) believes it is necessary and desirable that the Company be
able to rely upon Executive to continue serving in his position in the event of a pending or actual change in control of the Company. 
  
 THEREFORE, in consideration of the premises and mutual covenants contained herein and for other good and valuable consideration, the receipt of which is
mutually acknowledged, the Company and Executive (individually a “Party” and together the “Parties”) agree as follows: 
  
 1. Definitions. 
  
 (a) “Base Salary” means the Executive’s annual salary as in effect (1) at the time the Executive’s service is terminated hereunder,
(2) at the time of a Change in Control, or (3) immediately prior a salary reduction giving the Executive “Good Reason” to terminate his employment, as applicable. If more than one of (A), (B) or (C) is applicable, Base Salary shall mean
the annual salary determined under the standard producing the highest Base Salary. 
  
 (b) “Cause” shall exist: 
  

	 	(i)	 	If Executive Willfully and materially breaches any provision of Sections 5 or 6 of this Agreement; 

  

	 	(ii)	 	If Executive is convicted of, or pleads nolo contendere to, a felony that materially prejudices the Company; 

  

	 	(iii)	 	In the event of Executive’s Willful failure to attempt in good faith to perform the duties of Executive’s employment after receipt of written notice from the Board and an
opportunity to cure such failure; or 

  

	 	(iv)	 	In the event of Executive’s Willful failure to attempt in good faith to follow any legal and proper Board directive, after receipt of written notice from the Board and a
reasonable opportunity to cure such non-adherence or failure to act. 

 (c) “Willful” shall mean that an act or failure to act on Executive’s part was done or
omitted to be done by him not in good faith, and not as a result of any incapacity of Executive. 
  
 A termination of Executive’s employment shall not be considered a termination for Cause hereunder unless the provisions of this paragraph are complied with. Executive shall be given written notice by the Company
of its intention to terminate him for Cause, such notice (A) to state in detail the particular act or acts or failure or failures to act that constitute the grounds on which the proposed termination for Cause is based and (B) to be given within 15
days of the Company’s learning of such act or acts or failure or failures to act. Executive shall have 20 days after the date that such written notice has been given to Executive in which to cure such conduct, to the extent such cure is
possible. If Executive fails to cure such conduct, Executive shall then be entitled to a hearing before the Board at which Executive is entitled to appear. Such hearing shall be held within 25 days of such notice to Executive, provided Executive
requests such hearing within 10 days of receipt of the written notice from the Company of the intention to terminate him for Cause. If, within five days following such hearing, Executive is furnished written notice by the Board confirming that, in
its judgment, grounds for Cause on the basis of the original notice exist, Executive shall thereupon be terminated for Cause; provided that if Executive has commenced an arbitration in accordance with Section 9 within 15 days after his
receipt of the written notice from the Board, disputing the Board’s determination that Cause exists, Executive shall not be deemed to have been terminated for Cause in accordance with the provisions hereof unless and until the arbitrator shall
have so determined. 
  
 (d) A “Change in Control” shall
be deemed to have occurred if: 
  

	 	(i)	 	any Person other than (A) the Company or, (B) any trustee or other fiduciary holding securities under any employee benefit plan of the Company, or (C) any company owned, directly or
indirectly, by the stockholders of the Company immediately prior to the occurrence with respect to which the evaluation is being made in substantially the same proportions as their ownership of the common stock of the Company, becomes the Beneficial
Owner (except that a Person shall be deemed to be the Beneficial Owner of all shares that any such Person has the right to acquire pursuant to any agreement or arrangement or upon exercise of conversion rights, warrants or options or otherwise,
without regard to the sixty day period referred to in Rule 13d-3 under the Exchange Act), directly or indirectly, of securities of the Company or any Significant Subsidiary (as defined below), representing 25% of the combined voting power of the
Company’s or such subsidiary’s then outstanding securities; or 

  

	 	(ii)	 	during any period of two consecutive years, individuals who at the beginning of such period constitute the Board, and any new director (other than a director designated by a person
who has entered into an agreement with the Company to effect a transaction described in 

  

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	 	    	 	clause (i), (iii), or (iv) of this paragraph) whose election by the Board or nomination for election by the Company’s stockholders was approved by a vote of at least two-thirds
of the directors then still in office who either were directors at the beginning of the two-year period or whose election or nomination for election was previously so approved but excluding for this purpose any such new director whose initial
assumption of office occurs as a result of either an actual or threatened election contest (as such terms are used in Rule 14a-11 of Regulation 14A promulgated under the Exchange Act) or other actual or threatened solicitation of proxies or consents
by or on behalf of an individual, corporation, partnership, group, associate or other entity or Person other than the Board, cease for any reason to constitute at least a majority of the Board; or 

  

	 	(iii)	 	the consummation of a merger or consolidation of the Company or any subsidiary owning directly or indirectly all or substantially all of the consolidated assets of the Company (a
“Significant Subsidiary”) with any other entity, other than a merger or consolidation which would result in the voting securities of the Company or a Significant Subsidiary outstanding immediately prior thereto continuing to represent
(either by remaining outstanding or by being converted into voting securities of the surviving or resulting entity) more than 70% of the combined voting power of the surviving or resulting entity outstanding immediately after such merger or
consolidation; or 

  

	 	(iv)	 	the stockholders of the Company approve a plan or agreement for the sale or disposition of all or substantially all of the consolidated assets of the Company (other than such a sale
or disposition immediately after which such assets will be owned directly or indirectly by the Company’s stockholders in substantially the same proportions as their ownership of the Company’s common stock immediately prior to such sale or
disposition) in which case the Board shall determine the effective date of the Change in Control resulting therefrom. 

  
 For purposes of this definition: 
  

	 	(A)	 	The term “Beneficial Owner” shall have the meaning ascribed to such term in Rule 13d-3 under the Exchange Act (including any successor to such Rule).

  

	 	(B)	 	The term “Exchange Act” means the Securities Exchange Act of 1934, as amended from time to time, or any successor act thereto. 

  

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	 	(C)	 	The term “Person” shall have the meaning ascribed to such term in Section 3(a)(9) of the Exchange Act and used in Sections 13(d) and 14(d) thereof, including
“group” as defined in Section 13(d) thereof. 

  
 (e) “Confidential Information” shall have the meaning set forth in Section 5 below. 
  
 (f) “Code” shall have the meaning set forth in Section 11 below. 
  
 (g) “Disability” shall mean disability as that term is defined in the Company’s long-term disability plan.

  
 (h) “Effective Date” shall have the meaning set
forth in Section 2 below. 
  
 (i) “Excise Tax” shall
have the meaning set forth in Section 11 below. 
  
 (j) “Good
Reason” shall mean a termination of Executive’s employment at his initiative following the occurrence, without Executive’s written consent, of one or more of the following events: 
  

	 	(i)	 	any change in Executive’s title or the assignment of any duties or responsibilities inconsistent in any material and adverse respect with Executive’s position or which
represent a material diminution of Executive’s duties or responsibilities; 

  

	 	(ii)	 	a decrease in Executive’s annual Base Salary or target annual incentive award opportunity or notice from the Company’s Board of Directors under Section 2(a) of an
intention to materially reduce or eliminate the Severance Benefits under Section 4(a); 

  

	 	(iii)	 	any failure to secure the agreement of any successor corporation or other entity to the Company to fully assume the Company’s obligations to Executive under this Agreement;

  

	 	(iv)	 	a relocation of Executive’s principal place of employment to a location that increases the distance the Executive is required to commute from his primary residence immediately
prior to the Change in Control, by more than 25 miles; 

  

	 	(v)	 	any significant increase (as compared to the amount of travel conducted by Executive prior to the Change in Control) in the amount of travel or any substantial change in the
destination of such travel necessary for Executive to perform his job responsibilities hereunder; 

  

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	 	(vi)	 	any material unremedied breach by the Company of the terms and conditions of Executive’s employment, including without limitation, the terms and conditions of any employment
agreement; 

  

	 	(vii)	 	any termination by the Executive within 12 months following a Change in Control; or 

  

	 	(viii)	 	a failure to nominate or re–elect Executive as a member of the Board. 

  
 (k) “Gross-Up Payment” shall have the meaning set forth in Section 11 below. 
  
 (l) “Independent Advisors” shall have the meaning set forth in Section 11 below. 
  
 (m) “Original Term” shall have the meaning set forth in Section 2
below. 
  
 (n) “Renewal Term” shall have the meaning set
forth in Section 2 below. 
  
 (o) “Subsidiary” shall
have the meaning set forth in Section 5 below. 
  
 (p)
“Term” shall have the meaning set forth in Section 2 below. 
  
 (q) “Total Payments” shall have the meaning set forth in Section 11 below. 
  
 2. Term of Agreement. 
  
 The term of this Agreement shall commence on the date of this Agreement (the “Effective Date”) and shall end as follows: 
  
 (a) the Severance Benefit provisions of this Agreement that are not
contingent upon a Change in Control (Section 4(a) and the relevant provisions of Sections 1, 5 though 10 and 12 through 21) shall remain in effect until the Company’s Board of Directors shall have given 180 days written notice to Executive of
its intention to amend or terminate those provisions; and 
  
 (b)
the Change in Control provisions of this Agreement (Sections 4(b) and the relevant provisions of Sections 1, and 5 through 21) shall remain in effect until the third anniversary of the Effective Date (the “Original Term”). The Original
Term shall be automatically renewed for successive one-year terms (the “Renewal Terms”) unless at least 180 days prior to the expiration of the Original Term or any Renewal Term, either Party notifies the other Party in writing that he or
it is electing to terminate this Agreement at the expiration of the then current Term. “Term” shall mean the Original Term and all Renewal Terms. 
  

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 3. Extension of Term Upon Change in Control. 
  
 If a Change in Control shall have occurred during the Term of the Change in Control provisions hereof, notwithstanding any
other provision of Section 2, the Term of those provisions shall not expire earlier than three years after such Change in Control. 
  
 4. Entitlement to Severance Benefit. 
  
 Severance Benefit. In the event Executive’s employment with the Company is involuntarily terminated by the Company without Cause (other than
due to death or Disability), or voluntarily terminated by Executive for Good Reason, in either case Executive shall be entitled to receive in a cash lump sum not later than 15 days following Executive’s termination of employment: 
  
 (a) If such termination does not occur following a Change in Control and is
not in contemplation of a Change in Control, 
  

	 	(i)	 	then earned but unpaid portion of any salary and bonus and any accrued but unused vacation through the termination date; 

  

	 	(ii)	 	all vested and accrued benefits under any Company benefit plans; 

  

	 	(iii)	 	an amount equal to 2.0 times the sum of: 

  

	 	(A)	 	Executive’s Base Salary, and 

  

	 	(B)	 	Executive’s target annual incentive opportunity for the year in which the termination of employment occurs; and 

  

	 	(iv)	 	immediate acceleration of vesting on all options that are scheduled to vest within 18 months of the date of such termination and the right to exercise any vested stock options for
180 days or the remainder of the exercise period, if less. 

  
 (b) If such termination occurs within three years after a Change in Control has occurred (or any such termination in contemplation of such Change in Control), 
  

	 	(i)	 	then earned but unpaid portion of any salary and bonus and any accrued but unused vacation through the termination date; 

  

	 	(ii)	 	an amount equal to 3.0 times the sum of: 

  

	 	(A)	 	Executive’s Base Salary, and 

  

	 	(B)	 	Executive’s target annual incentive opportunity for the year in which the termination of employment occurs, 

  

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	 	    	 	such amount payable in a cash lump sum promptly (but in no event later than 15 days) following Executive’s termination of employment; 

  

	 	(iii)	 	pro rata annual incentive award for the year in which termination occurs assuming that Executive would have received his target annual incentive for such year, payable in a cash
lump sum promptly (but in no event later than 15 days) following Executive’s termination of employment; 

  

	 	(iv)	 	elimination of all restrictions on any restricted or deferred stock awards outstanding at the time of termination of employment; 

  

	 	(v)	 	immediate vesting of all outstanding stock options and the right to exercise such stock options for 12 months or the remainder of the exercise period, if less;

  

	 	(vi)	 	settlement of all deferred compensation arrangements in accordance with any then applicable deferred compensation plan and/or applicable deferral election form duly executed by
Executive; 

  

	 	(vii)	 	continued participation in all medical, health and life insurance plans at the same benefit level at which Executive was participating on the date of termination of Executive’s
employment until the earlier of: 

  

	 	(A)	 	36 months following the termination of Executive’s employment; 

  

	 	(B)	 	the date, or dates, Executive receives equivalent coverage and benefits under the plans and programs of a subsequent employer (such coverage and benefits to be determined on a
coverage-by-coverage, or benefit-by-benefit, basis); provided that (1) if Executive is precluded from continuing his participation in any employee benefit plan or program as provided in this clause (viii) of this Section 4(a), Executive shall
receive cash payments equal on an after-tax basis to the cost to Executive of obtaining the benefits provided under the plan or program in which he is unable to participate for the period specified in this clause (viii) of this Section 4(a), (2)
such cost shall be deemed to be the lowest reasonable cost that would be incurred by Executive in obtaining such benefit himself/herself on an individual basis, and (3) payment of such amounts shall be made quarterly in advance; or

  

	 	(C)	 	upon Executive’s death (provided that this subsection (B) shall not operate to diminish or eliminate the rights of Executive’s spouse or other beneficiaries to any benefit
to 

  

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	 	    	 	which they would otherwise be entitled pursuant to any Company plan or program); 

  

	 	(viii)	 	continued indemnification in accordance with Company’s charter and by-laws as in effect on the date of the Change in Control or on the date of the Executive’s termination,
whichever provides the greater protection to the Executive; and 

  

	 	(ix)	 	other or additional benefits then due or earned in accordance with applicable plans and programs of the Company. 

  
 For purposes of this Agreement, including without limitation, Section 4, a termination in
contemplation of a Change in Control means a termination within 12 months prior to an actual Change in Control at the request or direction of a Person who enters or has entered into an agreement the consummation of which would cause a Change in
Control or who conditions entry into such an agreement on the Executive’s termination whether or not such Person actually enters into such an agreement. A termination by the Executive for Good Reason shall constitute a termination in
contemplation of a Change in Control if the actions giving rise to Good Reason were taken at the suggestion of a Person who has entered into an agreement the consummation of which would cause a Change in Control. Notwithstanding the foregoing, a
termination in contemplation of a Change in Control shall be conclusively presumed to occur if the Executive is terminated by the Company without Cause (other than due to death or Disability), or voluntarily terminated by Executive for Good Reason
within 120 days prior to the date a Change in Control occurs. 
  
 (c) No Mitigation; No Offset. In the event of any termination of employment under this Section 4, Executive shall be under no obligation to seek other employment; amounts due Executive under this Agreement shall not be offset by any
remuneration attributable to any subsequent employment that Executive may obtain. 
  
 (d) Nature of Payments. Any amounts due under this Section 4 are in the nature of severance payments considered to be reasonable by the Company and are not in the nature of a penalty. 
  

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 5. Confidentiality; Cooperation with Regard to Litigation; Non-disparagement. 
  
 (a) During the Term and thereafter, Executive shall not, without the
Company’s prior written consent, disclose to anyone (except in good faith in the ordinary course of business to a person who will be advised by Executive to keep such information confidential) or make use of any Confidential Information except
in the performance of his duties hereunder or when required to do so by legal process, by any governmental agency having supervisory authority over the business of the Company or by any administrative or legislative body (including a committee
thereof) that requires him to divulge, disclose or make accessible such information. In the event that Executive is so ordered, he shall give the Company prompt written notice to allow the Company the opportunity to object to or otherwise resist
such order. 
  
 (b) During the Term and thereafter, Executive
shall not disclose the existence or contents of this Agreement beyond what is disclosed in the proxy statement or documents filed with the government unless and to the extent such disclosure is required by law, by a governmental agency, or in a
document required by law to be filed with a governmental agency or in connection with enforcement of Executive’s rights under this Agreement. In the event that disclosure is so required, Executive shall give prompt written notice to the Company
to allow the Company the opportunity to object to or otherwise resist such requirement. This restriction shall not apply to such disclosure by Executive to members of his immediate family, his tax, legal or financial advisors, any lender, or tax
authorities, or to potential future employers to the extent necessary, each of whom shall be advised not to disclose such information. 
  
 (c) “Confidential Information” shall mean all information concerning the business of the Company or any Subsidiary relating to any of their
products, product development, trade secrets, customers, suppliers, finances, and business plans and strategies. Excluded from the definition of Confidential Information is information (i) that is or becomes part of the public domain, other than
through the breach of this Agreement by Executive or (ii) regarding the Company’s business or industry properly acquired by Executive in the course of his career as an executive in the Company’s industry and independent of Executive’s
employment by the Company. For this purpose, information known or available generally within the trade or industry of the Company or any Subsidiary shall be deemed to be known or available to the public. 
  
 (d) “Subsidiary” shall mean any corporation controlled directly or
indirectly by the Company. 
  
 (e) Executive agrees to cooperate
with the Company, during the Term and thereafter (including following Executive’s termination of employment for any reason), by making himself/herself reasonably available to testify on behalf of the Company or any Subsidiary in any action,
suit, or proceeding, whether civil, criminal, administrative, or investigative, and to assist the Company, or any Subsidiary, in any such action, suit, or proceeding, by providing information and meeting and consulting with the Board or its
representatives or counsel, or representatives or counsel to the Company, or any Subsidiary as requested; provided, however that the same does not materially interfere 
  

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 with his then current professional activities. The Company agrees to reimburse Executive, on an after-tax basis, for all
expenses actually incurred in connection with his provision of testimony or assistance. 
  
 (f) Executive and Company agree that, during the Term and thereafter (including following Executive’s termination of employment for any reason) both parties will not make statements or representations, or
otherwise communicate, directly or indirectly, in writing, orally, or otherwise, or take any action which may, directly or indirectly, disparage or be damaging to the Executive or the Company or any Subsidiary or the officers, directors, employees,
advisors, businesses or reputations of the Company or any Subsidiary . Notwithstanding the foregoing, nothing in this Agreement shall preclude Executive or the Company from making truthful statements or disclosures that are required by applicable
law, regulation or legal process. 
  
 6. Restrictive Covenants. 

 
 (a) Non-solicitation. During the period beginning with Effective
Date and ending 12 months following the termination of Executive’s employment, Executive shall not induce employees of the Company or any Subsidiary to terminate their employment. During such period, Executive shall not hire, directly or
through any employee, agent or representative, any employee of the Company or any Subsidiary or any person who was employed by the Company or any Subsidiary within 180 days of such hiring. Provided, however, that the prohibition on non-solicitation
under this or any other agreement shall not apply to any officers who have signed an agreement with the Company providing for Change in Control benefits, if such officer has been notified by the Company or any party to a Change in Control event that
the officer will likely be terminated following a Change in Control event. 
  
 (b) Non-Competition. Executive acknowledges and agrees that the nature of the proprietary information to which he will have access by virtue of his employment with the Company will render it impossible, even
with the exercise of complete good faith, to render services to or be affiliated with any other entity with which the Company competes in its highly competitive, international industry. Accordingly, Executive agrees that during the term of this
Agreement and for a period of eighteen months after the termination hereof; he will not, without the prior consent of the Company, directly or indirectly, have a material interest in (other than an interest held on the date hereof or derived
directly, without further material investment by the Executive, from any such interest), be employed by, or be connected with, as an employee, consultant, officer, director, partner, stockholder or joint venturer in any entity which is in direct and
material competition with the business of the Company anywhere in North America or Europe; provided, however, that the foregoing shall not prevent Executive from being a stockholder of less than one percent of the issued and outstanding securities
of any publicly traded corporation nor shall the foregoing preclude Executives employment by Nortel Networks.com or any successor thereto, nor shall it preclude Executive’s employment by a competitor of the Company if the Executive is employed
in a part of 
  

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 such competitors business that does not compete directly with the Company. Executive acknowledges and agrees that the
foregoing covenant is reasonable in scope and duration in light of the nature of the Company’s business, is given in connection with and in order to protect the value of the proprietary information to which Executive will be given access during
his employment, and is neither injurious to the public nor oppressive to Executive and his ability to be gainfully employed following his employment with the Company. Notwithstanding the foregoing, this Section shall expire and be of no operative
effect on the date of the Executive’s termination of employment if the Executive’s employment with the Company is involuntarily terminated by the Company without Cause (other than due to death or Disability), or voluntarily terminated by
Executive for Good Reason within three years after a Change in Control has occurred (or any such termination in contemplation of such Change in Control). 
  
 7. Remedies. 
  
 In addition to whatever other rights and remedies the Company may have at equity or in law, if Executive breaches any of the provisions contained in
Sections 5 or 6 above, the Company (a) shall have the right to seek injunctive relief. Executive acknowledges that such a breach would cause irreparable injury and that money damages would not provide an adequate remedy for the Company; provided,
however, the foregoing shall not prevent Executive from contesting the issuance of any such injunction on the ground that no violation or threatened violation of Sections 5 or 6 has occurred. 
  
 8. Resolution of Disputes. 
  
 Any controversy or claim arising out of or relating to this Agreement or any
breach or asserted breach hereof or questioning the validity and binding effect hereof arising under or in connection with this Agreement, other than seeking injunctive relief under Section 7, shall be resolved by binding arbitration, to be held at
the American Arbitration Association’s office closest to the Company’s principal offices in accordance with the rules and procedures of the American Arbitration Association or any other mutually agreed location. Judgment upon the award
rendered by the arbitrator(s) may be entered in any court having jurisdiction thereof. Pending the resolution of any arbitration or court proceeding, the Company shall continue payment of all amounts and benefits due Executive under this Agreement.
Executive shall be entitled to reimbursement of reasonable costs and expenses of any arbitration or court proceeding (including reasonable fees and disbursements of counsel) as follows: (a) if the dispute arises prior to a Change in Control,
Executive must prevail in the litigation or dispute, and (b) if the dispute arises after a Change in Control, Executive shall be reimbursed so long as no determination is made that Executive’s litigation assertions or defenses were asserted in
bad faith or frivolous. 
  

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 9. Effect of Agreement on Other Benefits. 
  
 Except as specifically provided in this Agreement, the existence of this Agreement shall not be interpreted to preclude,
prohibit or restrict Executive’s participation in any other employee benefit or other plans or programs (including without limitation, the Entrust Technologies, Inc. Change in Control Bonus Incentive Plan) in which he currently participates or
for which he may become eligible under the terms of each plan or program after the date of this Agreement. 
  
 10. Not an Employment Agreement. 
  
 This Agreement is not, and nothing herein shall be deemed to create, a contract of employment between Executive and the Company. The Company may terminate Executive’s employment at any time, subject to the terms
of any employment agreement between the Company and Executive that may then be in effect. 
  
 11. Excise Tax Gross-Up. 
  
 If Executive becomes entitled to one or more payments (with a “payment” including, without limitation, the vesting of an option or other non-cash benefit or property), whether pursuant to the terms of this Agreement or any other
plan, arrangement, or agreement with the Company or any affiliated company (the “Total Payments”), which are or become subject to the tax imposed by Section 4999 of the Internal Revenue Code of 1986, as amended (the “Code”) (or
any similar tax that may hereafter be imposed) (the “Excise Tax”), the Company shall pay to Executive at the time specified below an additional amount (the “Gross-Up Payment”) (which shall include, without limitation,
reimbursement for any penalties and interest that may accrue in respect of such Excise Tax) such that the net amount retained by Executive, after reduction for any Excise Tax (including any penalties or interest thereon) on the Total Payments and
any federal, state and local income or employment tax and Excise Tax on the Gross-Up Payment provided for by this Section 11, but before reduction for any federal, state, or local income or employment tax on the Total Payments, shall be equal to the
sum of (a) the Total Payments, and (b) an amount equal to the product of any deductions disallowed for federal, state, or local income tax purposes because of the inclusion of the Gross-Up Payment in Executive’s adjusted gross income multiplied
by the highest applicable marginal rate of federal, state, or local income taxation, respectively, for the calendar year in which the Gross-Up Payment is to be made. For purposes of determining whether any of the Total Payments will be subject to
the Excise Tax and the amount of such Excise Tax: 
  
 (a) The
Total Payments shall be treated as “parachute payments” within the meaning of Section 280G(b)(2) of the Code, and all “excess parachute payments” within the meaning of Section 280G(b)(1) of the Code shall be treated as subject to
the Excise Tax, unless, and except to the extent that, in the written opinion of independent compensation consultants, counsel or auditors of nationally recognized standing (“Independent Advisors”) selected by the Company and reasonably
acceptable to Executive, the Total Payments (in whole or in part) do not constitute parachute 
  

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 payments, or such excess parachute payments (in whole or in part) represent reasonable compensation for services actually
rendered within the meaning of Section 280G(b)(4) of the Code in excess of the base amount within the meaning of Section 280G(b)(3) of the Code or are otherwise not subject to the Excise Tax; 
  
 (b) The amount of the Total Payments which shall be treated as subject to the
Excise Tax shall be equal to the lesser of (i) the total amount of the Total Payments or (ii) the total amount of excess parachute payments within the meaning of Section 280G(b)(1) of the Code (after applying clause (a) above); and 
  
 (c) The value of any non-cash benefits or any deferred payment or benefit
shall be determined by the Independent Advisors in accordance with the principles of Sections 280G(d)(3) and (4) of the Code. 
  
 For purposes of determining the amount of the Gross-Up Payment, Executive shall be deemed (i) to pay federal income taxes at the highest marginal rate of
federal income taxation for the calendar year in which the Gross-Up Payment is to be made; (ii) to pay any applicable state and local income taxes at the highest marginal rate of taxation for the calendar year in which the Gross-Up Payment is to be
made, net of the maximum reduction in federal income taxes which could be obtained from deduction of such state and local taxes if paid in such year (determined without regard to limitations on deductions based upon the amount of Executive’s
adjusted gross income); and (iii) to have otherwise allowable deductions for federal, state, and local income tax purposes at least equal to those disallowed because of the inclusion of the Gross-Up Payment in Executive’s adjusted gross income.
In the event that the Excise Tax is subsequently determined to be less than the amount taken into account hereunder at the time the Gross-Up Payment is made, Executive shall repay to the Company at the time that the amount of such reduction in
Excise Tax is finally determined (but, if previously paid to the taxing authorities, not prior to the time the amount of such reduction is refunded to Executive or otherwise realized as a benefit by the Executive) the portion of the Gross-Up Payment
that would not have been paid if such Excise Tax had been applied in initially calculating the Gross-Up Payment, plus interest on the amount of such repayment at the rate provided in Section 1274(b)(2)(B) of the Code. In the event that the Excise
Tax is determined to exceed the amount taken into account hereunder at the time the Gross-Up Payment is made (including by reason of any payment the existence or amount of which cannot be determined at the time of the Gross-Up Payment), the Company
shall make an additional Gross-Up Payment in respect of such excess (plus any interest and penalties payable with respect to such excess) at the time that the amount of such excess is finally determined. 
  
 The Gross-Up Payment provided for above shall be paid on the 30th day (or
such earlier date as the Excise Tax becomes due and payable to the taxing authorities) after it has been determined that the Total Payments (or any portion thereof) are subject to the Excise Tax; provided, however, that if the amount
of such Gross-Up Payment or portion thereof cannot be finally determined on or before such day, the Company shall pay to Executive on such day an estimate, as determined by the Independent Advisors, of the minimum amount of such payments and shall
pay the remainder of such 
  

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 payments (together with interest at the rate provided in Section 1274(b)(2)(B) of the Code), as soon as the amount
thereof can be determined. In the event that the amount of the estimated payments exceeds the amount subsequently determined to have been due, such excess shall constitute a loan by the Company to Executive, payable on the fifth day after demand by
the Company (together with interest at the rate provided in Section 1274(b)(2)(B) of the Code). If more than one Gross-Up Payment is made, the amount of each Gross-Up Payment shall be computed so as not to duplicate any prior Gross-Up Payment. The
Company shall have the right to control all proceedings with the Internal Revenue Service that may arise in connection with the determination and assessment of any Excise Tax and, at its sole option, the Company may pursue or forego any and all
administrative appeals, proceedings, hearings, and conferences with any taxing authority in respect of such Excise Tax (including any interest or penalties thereon); provided, however, that the Company’s control over any such
proceedings shall be limited to issues with respect to which a Gross-Up Payment would be payable hereunder, and Executive shall be entitled to settle or contest any other issue raised by the Internal Revenue Service or any other taxing authority.
Executive shall cooperate with the Company in any proceedings relating to the determination and assessment of any Excise Tax and shall not take any position or action that would materially increase the amount of any Gross-Up Payment hereunder.

  
 12. Assignability; Binding Nature. 
  
 This Agreement shall be binding upon and inure to the benefit of the Parties
and their respective successors, heirs (in the case of Executive) and permitted assigns. No rights or obligations of the Company under this Agreement may be assigned or transferred by the Company except that such rights or obligations may be
assigned or transferred in connection with the sale or transfer of all or substantially all of the assets of the Company, provided that the assignee or transferee is the successor to all or substantially all of the assets of the Company and such
assignee or transferee assumes the liabilities, obligations and duties of the Company, as contained in this Agreement, either contractually or as a matter of law. The Company further agrees that, in the event of a sale or transfer of assets as
described in the preceding sentence, it shall take whatever action it legally can to cause such assignee or transferee to expressly assume the Company’s liabilities, obligations and duties hereunder. No rights or obligations of Executive under
this Agreement may be assigned or transferred by Executive other than his rights to compensation and benefits, which may be transferred only by will or operation of law, except as provided in Section 18 below. 
  
 13. Representation. 
  
 The Company represents and warrants that it is fully authorized and empowered to enter into this Agreement and that the
performance of its obligations under this Agreement will not violate any agreement between it and any other person, firm or organization. 
  

 - 14 - 

 14. Entire Agreement. 
  
 This Agreement contains the entire understanding and agreement between the Parties concerning the subject matter hereof and supersedes all prior
agreements, understandings, discussions, negotiations and undertakings, whether written or oral, between the Parties with respect thereto. For the avoidance of doubt, this Agreement does not address and accordingly, does not supercede, the benefits
offered under any employee benefit plan or the benefits payable to the Executive upon the Executive’s death or disability. 
  
 15. Amendment or Waiver. 
  
 No provision in this Agreement may be amended unless such amendment is agreed to in writing and signed by Executive and an authorized officer of the
Company. No waiver by either Party of any breach by the other Party of any condition or provision contained in this Agreement to be performed by such other Party shall be deemed a waiver of a similar or dissimilar condition or provision at the same
or any prior or subsequent time. Any waiver must be in writing and signed by Executive or an authorized officer of the Company, as the case may be. 
  
 16. Severability. 
  
 In the event that any provision or portion of this Agreement shall be determined to be invalid or unenforceable for any reason, in whole or in part, the
remaining provisions of this Agreement shall be unaffected thereby and shall remain in full force and effect to the fullest extent permitted by law. 
  
 17. Survivorship. 
  
 The respective rights and obligations of the Parties hereunder shall survive any termination of Executive’s employment to the extent necessary to
preserve such rights and obligations. 
  
 18. Beneficiaries/References.

  
 Executive shall be entitled, to the extent permitted under any
applicable law, to select and change a beneficiary or beneficiaries to receive any compensation or benefit payable hereunder following Executive’s death by giving the Company written notice thereof. In the event of Executive’s death or a
judicial determination of his incompetence, references in this Agreement to Executive shall be deemed, where appropriate, to refer to his beneficiary, estate or other legal representative. 
  

 - 15 - 

 19. Governing Law/Jurisdiction. 
  
 This Agreement shall be governed by and construed and interpreted in accordance with the laws of the State of Texas without
reference to principles of conflict of laws. Subject to Section 8, the Company and Executive hereby consent to the jurisdiction of any or all of the following courts for purposes of resolving any dispute under this Agreement: (i) the United States
District Court for the Northern District of Texas or (ii) any of the courts of the State of Texas. The Company and Executive further agree that any service of process or notice requirements in any such proceeding shall be satisfied if the rules of
such court relating thereto have been substantially satisfied. The Company and Executive hereby waive, to the fullest extent permitted by applicable law, any objection which it or he may now or hereafter have to such jurisdiction and any defense of
inconvenient forum. 
  
 20. Notices. 
  
 Any notice given to a Party shall be in writing and shall be deemed to have
been given when delivered personally or sent by certified or registered mail, postage prepaid, return receipt requested, duly addressed to the Party concerned at the address indicated below or to such changed address as such Party may subsequently
give such notice of: 
  

	 	If to the Company:	 	Entrust Inc. 

	 	    	 	One Hanover Park 

	 	    	 	Suite 800 

	 	    	 	Addison, TX 75001 

  

	 	If to Executive:	 	F. William Conner 

	 	    	 	4440 Beechwood Lane 

	 	    	 	Dallas, TX 75220 

  
 21. Headings. 
  
 The
headings of the sections contained in this Agreement are for convenience only and shall not be deemed to control or affect the meaning or construction of any provision of this Agreement. 
  
 22. Counterparts. 
  
 This Agreement may be executed in two or more counterparts. 
  

 - 16 - 

 IN WITNESS WHEREOF, the undersigned have executed this Agreement as of the date first written above.

  

			
	 ENTRUST, INC.

		
	 By:
	 	 /s/ Terrell B. Jones

	 Name: Terrell Jones
 Title: Chair
Compensation Committee

	
	 /s/ F. William Conner

	Executive

  
  
  

 - 17 -Letter Agreement dated February 2, 2004 -- Registrant and F. William Conner

 EXHIBIT 10.24 
  
 [ENTRUST TECHNOLOGIES, INC. LETTERHEAD] 
  
 February 2, 2004 
  
 F. William Conner 
 440 Beechwood Lane 
 Dallas, TX 75220 
  
 Dear Bill: 
  
 We are pleased to inform you that,
pursuant to the Entrust Technologies, Inc. Change in Control Bonus Incentive Plan (the “Plan”), the Committee hereby grants to you an opportunity to receive a bonus upon the occurrence of a Change in Control (the “Award”), in
addition to any other compensation from the Company that you are otherwise entitled to receive. The amount of bonus payable to you upon a Change in Control is dependent upon the Fair Market Value of the Common Stock on such date and is reflected in
the chart below. 
  
 This Award is subject to the applicable terms and conditions
of the Plan, which are incorporated herein by reference, and in the event of any contradiction, distinction or difference between this letter and the terms of the Plan, the terms of the Plan will control. Unless otherwise stated, all capitalized
terms used herein have the meanings set forth in the Plan. 
  
 You will be
entitled to receive a cash bonus (payable under the terms of the Plan) based on the Fair Market Value of Common Stock on the date that a Change in Control occurs (a “Common Stock Price Target”), as follows: 
  

			
	 Common Stock Price Target

	 	 Cash Bonus Amount

	 $3.20
	 	   $650,000
	 $3.50
	 	   $650,000
	 $3.75
	 	   $650,000
	 $4.00
	 	   $650,000
	 $4.25
	 	$1,000,000
	 $4.50
	 	$1,400,000
	 $4.75
	 	$1,800,000
	 $5.00
	 	$2,200,000
	 $5.25
	 	$2,600,000
	 $5.50
	 	$3,000,000
	 $5.75
	 	$3,400,000
	 $6.00
	 	$3,800,000
	 $6.25
	 	$4,200,000
	 $6.50
	 	$4,600,000
	 $6.75
	 	$5,000,000
	 $7.00
	 	$4,400,000
	 $7.25
	 	$3,800,000
	 $7.50
	 	$3,200,000
	 $7.75
	 	$2,600,000
	 $8.00
	 	$2,000,000
	 $8.25
	 	$1,400,000
	 $8.50
	 	   $800,000
	 $8.75
	 	   $300,000
	 $9.00
	 	   $200,000
	 $9.25
	 	   $200,000
	 $9.50
	 	   $200,000
	 $9.75
	 	   $200,000
	 $10.00 and above
	 	   $200,000

  
 If Fair Market Value of Common Stock
on the date a Change in Control occurs is between two Common Stock Price Targets, then your cash bonus will be the bonus payable at the Common Stock Price Target nearest the Fair Market Value. If the Fair Market Value of Common Stock on the date
that a Change in Control occurs is below $3.20, then you will not be eligible to receive any bonus payment under the Plan. 
  
 The construction and interpretation of any provision of this Award or the Plan shall be final and conclusive when made by the Committee. 
  
 Nothing in this letter shall confer on you the right to continue in the service of the
Company or interfere in any way with the right of the Company to terminate your service at any time. 
  
 You should sign and return a copy of this agreement to the Secretary indicating your approval of this letter. This acknowledgement must be returned within thirty (30) days, otherwise, the Award will lapse and become
null and void. Your signature will also acknowledge that you have received and reviewed the Plan, and that you agree to abide by the applicable terms of this document as provided herein. 
  

	
	Very truly yours,
	
	/s/ Terrell B. Jones
	

	 Enclosures

  

					
	The undersigned hereby agrees to the foregoing:
			
	/s/ F. William Conner	 	 	 	 
	
	 	 	 	

	 F. William Conner
	 	 	 	Date

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