Document:

EX-10.4

 Exhibit 10.4 

INDEMNITY AGREEMENT 

THIS INDEMNITY AGREEMENT (the “Agreement”) is made
and entered into as of                             , 20    , between Sonim
Technologies, Inc., a Delaware corporation (the “Company”), and
                             (“Indemnitee”). 

RECITALS 

A.    Highly competent persons have become more reluctant to serve corporations as directors or officers or in
other capacities unless they are provided with adequate protection through insurance or adequate indemnification against inordinate risks of claims and actions against them arising out of their service to and activities on behalf of the corporation;

 B.    Although the furnishing of such insurance to protect persons serving a corporation and its subsidiaries
from certain liabilities has been a customary and widespread practice among United States-based corporations and other business enterprises, the Company believes that, given current market conditions and trends, such insurance may be available to it
in the future only at higher premiums and with more exclusions. At the same time, directors, officers, and other persons in service to corporations or business enterprises are being increasingly subjected to expensive and time-consuming litigation
relating to, among other things, matters that traditionally would have been brought only against the Company or business enterprise itself. The Bylaws and Certificate of Incorporation of the Company require indemnification of the officers and
directors of the Company. Indemnitee may also be entitled to indemnification pursuant to the General Corporation Law of the State of Delaware (“DGCL”). The Bylaws, Certificate of Incorporation and the DGCL expressly provide
that the indemnification provisions set forth therein are not exclusive, and thereby contemplate that contracts may be entered into between the Company and members of the Board, officers and other persons with respect to indemnification; 

C.    The uncertainties relating to such liability insurance and to indemnification have increased the difficulty
of attracting and retaining such persons; 
 D.    The Board has determined that the increased difficulty in
attracting and retaining such persons is detrimental to the best interests of the Company’s stockholders and that the Company should act to assure such persons that there will be increased certainty of such protection in the future; 

E.    It is reasonable, prudent and necessary for the Company to contractually obligate itself to indemnify, and to
advance expenses on behalf of, such persons to the fullest extent permitted by applicable law so that they will serve or continue to serve the Company free from undue concern that they will not be so indemnified; 

F.    This Agreement is a supplement to and in furtherance of the Bylaws and Certificate of Incorporation of the
Company and any resolutions adopted pursuant thereto, and shall not be deemed a substitute therefor, nor to diminish or abrogate any rights of Indemnitee thereunder; and 

G.    Indemnitee does not regard the protection available under the Company’s Bylaws and Certificate of
Incorporation and insurance as adequate in the present circumstances, and may not be willing to serve as an officer or director without adequate protection, and the Company desires Indemnitee to serve in such capacity. Indemnitee is willing to
serve, continue to serve and to take on additional service for or on behalf of the Company on the condition that he or she be so indemnified; and 

 H.    Indemnitee may have certain rights to indemnification
and/or insurance provided by other entities and/or organizations which Indemnitee and such other entities and/or organizations intend to be secondary to the primary obligation of the Company to indemnify Indemnitee as provided herein, with the
Company’s acknowledgement and agreement to the foregoing being a material condition to Indemnitee’s willingness to serve on the Board. 

I.    This Agreement supersedes and replaces in its entirety any previous Indemnification Agreement entered into
between the Company and the Indemnitee. 
 NOW, THEREFORE, in consideration of
Indemnitee’s agreement to serve as an officer or a director from and after the date hereof, the parties hereto agree as follows: 

1.    Indemnity of Indemnitee. The Company hereby agrees to hold harmless and indemnify Indemnitee to the
fullest extent permitted by law, as such may be amended from time to time pursuant to, and in accordance with, the terms of this Agreement. In furtherance of the foregoing indemnification, and without limiting the generality thereof: 

(a)    Proceedings Other Than Proceedings by or in the Right of the Company. Indemnitee shall be entitled to
the rights of indemnification provided in this Section l(a) if, by reason of his or her Corporate Status, the Indemnitee is, or is threatened to be made, a party to or participant in any Proceeding other than a Proceeding by or in the right of
the Company. Pursuant to this Section 1(a), Indemnitee shall be indemnified against all Expenses, judgments, penalties, fines and amounts paid in settlement actually and reasonably incurred by him or her, or on his or her behalf, in connection
with such Proceeding or any claim, issue or matter therein, if the Indemnitee acted in good faith and in a manner the Indemnitee reasonably believed to be in or not opposed to the best interests of the Company, and with respect to any criminal
Proceeding, had no reasonable cause to believe the Indemnitee’s conduct was unlawful. 

(b)    Proceedings by or in the Right of the Company. Indemnitee shall be entitled to the rights of
indemnification provided in this Section 1(b) if, by reason of his Corporate Status, the Indemnitee is, or is threatened to be made, a party to or participant in any Proceeding brought by or in the right of the Company. Pursuant to this
Section 1(b), Indemnitee shall be indemnified against all Expenses actually and reasonably incurred by the Indemnitee, or on the Indemnitee’s behalf, in connection with such Proceeding if the Indemnitee acted in good faith and in a manner
the Indemnitee reasonably believed to be in or not opposed to the best interests of the Company; provided, however, if applicable law so provides, no indemnification against such Expenses shall be made in respect of any claim, issue or
matter in such Proceeding as to which Indemnitee shall have been adjudged to be liable to the Company unless and to the extent that the Court of Chancery of the State of Delaware shall determine that such indemnification may be made. 

(c)    Indemnification for Expenses of a Party Who is Wholly or Partly Successful. Notwithstanding any other
provision of this Agreement, to the extent that Indemnitee is, by reason of his or her Corporate Status, a party to and is successful, on the merits or otherwise, in any Proceeding, he or she shall be indemnified to the maximum extent permitted by
law, as such may be amended from time to time, against all Expenses actually and reasonably incurred by him or her or on his or her behalf in connection therewith. If Indemnitee is not wholly successful in such Proceeding but is successful, on the
merits or otherwise, as to one or more but less than all claims, issues or matters in such Proceeding, the Company shall indemnify Indemnitee against all Expenses actually and reasonably incurred by him or her or on his or her behalf in connection
with each successfully resolved claim, issue or matter. For purposes of this Section and without limitation, the termination of any claim, issue or matter in such a Proceeding by dismissal, with or without prejudice, shall be deemed to be a
successful result as to such claim, issue or matter. 

  
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 2.    Additional Indemnity. In addition to, and without
regard to any limitations on, the indemnification provided for in Section 1 of this Agreement, the Company shall and hereby does indemnify and hold harmless Indemnitee against all Expenses, judgments, penalties, fines and amounts paid in
settlement actually and reasonably incurred by him or her or on his or her behalf if, by reason of his or her Corporate Status, he or she is, or is threatened to be made, a party to or participant in any Proceeding (including a Proceeding by or in
the right of the Company), including, without limitation, any and all liability arising out of the negligence or active or passive wrongdoing of Indemnitee. The only limitation that shall exist upon the Company’s obligations pursuant to this
Agreement shall be that the Company shall not be obligated to make any payment to Indemnitee that is finally determined (under the procedures, and subject to the presumptions, set forth in Sections 6 and 7 hereof) to be unlawful. 

3.    Contribution. 

(a)    Whether or not the indemnification provided in Sections 1 and 2 hereof is available, in respect of any
threatened, pending or completed action, suit or proceeding in which the Company is jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding), the Company shall pay, in the first instance, the entire amount of any
judgment or settlement of such action, suit or proceeding without requiring Indemnitee to contribute to such payment and the Company hereby waives and relinquishes any right of contribution it may have against Indemnitee. The Company shall not enter
into any settlement of any action, suit or proceeding in which the Company is jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding) unless such settlement provides for a full and final release of all claims
asserted against Indemnitee. The Company shall not settle any action or claim in a manner that would impose any penalty or admission of guilt or liability on Indemnitee without Indemnitee’s written consent. 

(b)    Without diminishing or impairing the obligations of the Company set forth in the preceding subparagraph, if,
for any reason, Indemnitee shall elect or be required to pay all or any portion of any judgment or settlement in any threatened, pending or completed action, suit or proceeding in which the Company is jointly liable with Indemnitee (or would be if
joined in such action, suit or proceeding), the Company shall contribute to the amount of Expenses, judgments, fines and amounts paid in settlement actually and reasonably incurred and paid or payable by Indemnitee in proportion to the relative
benefits received by the Company and all officers, directors or employees of the Company, other than Indemnitee, who are jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding), on the one hand, and Indemnitee, on
the other hand, from the transaction from which such action, suit or proceeding arose; provided, however, that the proportion determined on the basis of relative benefit may, to the extent necessary to conform to law, be further adjusted by
reference to the relative fault of the Company and all officers, directors or employees of the Company other than Indemnitee who are jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding), on the one hand, and
Indemnitee, on the other hand, in connection with the events that resulted in such expenses, judgments, fines or settlement amounts, as well as any other equitable considerations which the applicable law may require to be considered. The relative
fault of the Company and all officers, directors or employees of the Company, other than Indemnitee, who are jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding), on the one hand, and Indemnitee, on the other
hand, shall be determined by reference to, among other things, the degree to which their actions were motivated by intent to gain personal profit or advantage, the degree to which their liability is primary or secondary and the degree to which their
respective conduct is active or passive. 
 (c)    The Company hereby agrees to fully indemnify and hold
Indemnitee harmless from any claims of contribution which may be brought by officers, directors or employees of the Company, other than Indemnitee, who may be jointly liable with Indemnitee. 

  
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 (d)    To the fullest extent permissible under applicable law, if
the indemnification provided for in this Agreement is unavailable to Indemnitee for any reason whatsoever, the Company, in lieu of indemnifying Indemnitee, shall contribute to the amount incurred by Indemnitee, whether for judgments, fines,
penalties, excise taxes, amounts paid or to be paid in settlement and/or for Expenses, in connection with any claim relating to an indemnifiable event under this Agreement, in such proportion as is deemed fair and reasonable in light of all of the
circumstances of such Proceeding in order to reflect (i) the relative benefits received by the Company and Indemnitee as a result of the event(s) and/or transaction(s) giving cause to such Proceeding; and/or (ii) the relative fault of the
Company (and its directors, officers, employees and agents) and Indemnitee in connection with such event(s) and/or transaction(s). 

4.    Indemnification for Expenses of a Witness. Notwithstanding any other provision of this Agreement, to
the extent that Indemnitee is, by reason of his or her Corporate Status, a witness, or is made (or asked) to respond to discovery requests, in any Proceeding to which Indemnitee is not a party, he or she shall be indemnified against all Expenses
actually and reasonably incurred by him or her or on his or her behalf in connection therewith. 

5.    Advancement of Expenses. Notwithstanding any other provision of this Agreement, the Company shall
advance all Expenses incurred by or on behalf of Indemnitee in connection with any Proceeding by reason of Indemnitee’s Corporate Status within 30 days after the receipt by the Company of a statement or statements from Indemnitee requesting
such advance or advances from time to time, whether prior to or after final disposition of such Proceeding. Such statement or statements shall reasonably evidence the Expenses incurred by Indemnitee and shall include or be preceded or accompanied by
a written undertaking by or on behalf of Indemnitee to repay any Expenses advanced if it shall ultimately be determined that Indemnitee is not entitled to be indemnified against such Expenses. Any advances and undertakings to repay pursuant to this
Section 5 shall be unsecured and interest free. 
 6.    Procedures and Presumptions for Determination of
Entitlement to Indemnification. It is the intent of this Agreement to secure for Indemnitee rights of indemnity that are as favorable as may be permitted under the DGCL and public policy of the State of Delaware. Accordingly, the parties agree
that the following procedures and presumptions shall apply in the event of any question as to whether Indemnitee is entitled to indemnification under this Agreement: 

(a)    To obtain indemnification under this Agreement, Indemnitee shall submit to the Company a written request,
including therein or therewith such documentation and information as is reasonably available to Indemnitee and is reasonably necessary to determine whether and to what extent Indemnitee is entitled to indemnification. The Secretary of the Company
shall, promptly upon receipt of such a request for indemnification, advise the Board in writing that Indemnitee has requested indemnification. Notwithstanding the foregoing, any failure of Indemnitee to provide such a request to the Company, or to
provide such a request in a timely fashion, shall not relieve the Company of any liability that it may have to Indemnitee unless, and to the extent that, such failure actually and materially prejudices the interests of the Company. 

(b)    Upon written request by Indemnitee for indemnification pursuant to the first sentence of Section 6(a)
hereof, a determination with respect to Indemnitee’s entitlement thereto shall be made in the specific case by one of the following four methods, which shall be at the election of the Board: (i) unless a Change in Control has occurred:
(1) by a majority vote of the Disinterested Directors, even though less than a quorum, (2) by a committee of Disinterested Directors designated by a majority vote of the Disinterested Directors, even though less than a quorum, (3) if
there are no Disinterested Directors or if the Disinterested Directors so direct, by Independent Counsel in a written opinion to the Board, a copy of which shall be delivered to the Indemnitee, or (4) if so directed by the Board, by the
stockholders of the Company; and (ii) if a Change in Control has occurred, then by Independent Counsel in a written opinion to the Board, a copy of which shall be delivered to the Indemnitee. For purposes hereof, Disinterested Directors are
those members of the Board who are not parties to the action, suit or proceeding in respect of which indemnification is sought by Indemnitee. 

  
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 (c)    If the determination of entitlement to indemnification is
to be made by Independent Counsel pursuant to Section 6(b) hereof, the Independent Counsel shall be selected as provided in this Section 6(c). The Independent Counsel shall be selected by the Board. Indemnitee may, within 10 days after
such written notice of selection shall have been given, deliver to the Company a written objection to such selection; provided, however, that such objection may be asserted only on the ground that the Independent Counsel so selected does not meet
the requirements of “Independent Counsel” as defined in Section 13 of this Agreement, and the objection shall set forth with particularity the factual basis of such assertion. Absent a proper and timely objection, the
person so selected shall act as Independent Counsel. If a written objection is made and substantiated, the Independent Counsel selected may not serve as Independent Counsel unless and until such objection is withdrawn or a court has determined that
such objection is without merit. If, within 20 days after submission by Indemnitee of a written request for indemnification pursuant to Section 6(a) hereof, no Independent Counsel shall have been selected and not objected to, either the Company
or Indemnitee may petition the Court of Chancery of the State of Delaware or other court of competent jurisdiction for resolution of any objection which shall have been made by the Indemnitee to the Company’s selection of Independent Counsel
and/or for the appointment as Independent Counsel of a person selected by the court or by such other person as the court shall designate, and the person with respect to whom all objections are so resolved or the person so appointed shall act as
Independent Counsel under Section 6(b) hereof. The Company shall pay any and all reasonable fees and expenses of Independent Counsel incurred by such Independent Counsel in connection with acting pursuant to Section 6(b) hereof, and the
Company shall pay all reasonable fees and expenses incident to the procedures of this Section 6(c), regardless of the manner in which such Independent Counsel was selected or appointed. In no event shall Indemnitee be liable for fees and
expenses incurred by such Independent Counsel, subject to the limitations on indemnification set forth herein. 

(d)    In making a determination with respect to entitlement to indemnification hereunder, the person or persons or
entity making such determination shall presume that Indemnitee is entitled to indemnification under this Agreement. Anyone seeking to overcome this presumption shall have the burden of proof and the burden of persuasion by clear and convincing
evidence. Neither the failure of the Company (including by its Board or Independent Counsel) to have made a determination prior to the commencement of any action pursuant to this Agreement that indemnification is proper in the circumstances because
Indemnitee has met the applicable standard of conduct, nor an actual determination by the Company (including by its Board or Independent Counsel) that Indemnitee has not met such applicable standard of conduct, shall be a defense to the action or
create a presumption that Indemnitee has not met the applicable standard of conduct. 
 (e)    Indemnitee shall
be deemed to have acted in good faith if Indemnitee’s action is based on the records or books of account of the Enterprise, including financial statements, or on information supplied to Indemnitee by the officers of the Enterprise in the course
of their duties, or on the advice of legal counsel for the Enterprise or on information or records given or reports made to the Enterprise by an independent certified public accountant or by an appraiser or other expert selected with reasonable care
by the Enterprise. In addition, the knowledge and/or actions, or failure to act, of any director, officer, agent or employee of the Enterprise shall not be imputed to Indemnitee for purposes of determining the right to indemnification under this
Agreement. Whether or not the foregoing provisions of this Section 6(e) are satisfied, it shall in any event be presumed that Indemnitee has at all times acted in good faith and in a manner he reasonably believed to be in or not opposed to the
best interests of the Company. Anyone seeking to overcome this presumption shall have the burden of proof and the burden of persuasion by clear and convincing evidence. 

(f)    If the person, persons or entity empowered or selected under Section 6 to determine whether Indemnitee
is entitled to indemnification shall not have made a determination within 60 days after receipt by the Company of the request therefor, the requisite determination of entitlement to indemnification shall be deemed to have been made and Indemnitee
shall be entitled to such 

  
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indemnification absent (i) a misstatement by Indemnitee of a material fact, or an omission of a material fact necessary to make Indemnitee’s statement not materially misleading, in
connection with the request for indemnification, or (ii) a prohibition of such indemnification under applicable law; provided, however, that such 60-day period may be extended for a reasonable time, not
to exceed an additional 30 days, if the person, persons or entity making such determination with respect to entitlement to indemnification in good faith requires such additional time to obtain or evaluate documentation and/or information relating
thereto; and provided, further, that the foregoing provisions of this Section 6(f) shall not apply if the determination of entitlement to indemnification is to be made by the stockholders pursuant to Section 6(b) of this Agreement and if
(A) within 15 days after receipt by the Company of the request for such determination, the Board or the Disinterested Directors, if appropriate, resolve to submit such determination to the stockholders for their consideration at an annual
meeting thereof to be held within 75 days after such receipt and such determination is made thereat, or (B) a special meeting of stockholders is called within 15 days after such receipt for the purpose of making such determination, such meeting
is held for such purpose within 60 days after having been so called and such determination is made thereat. 

(g)    Indemnitee shall cooperate with the person, persons or entity making such determination with respect to
Indemnitee’s entitlement to indemnification, including providing to such person, persons or entity upon reasonable advance request any documentation or information which is not privileged or otherwise protected from disclosure and which is
reasonably available to Indemnitee and reasonably necessary to such determination. Any Independent Counsel, member of the Board or stockholder of the Company shall act reasonably and in good faith in making a determination regarding the
Indemnitee’s entitlement to indemnification under this Agreement. Any costs or expenses (including attorneys’ fees and disbursements) incurred by Indemnitee in so cooperating with the person, persons or entity making such determination
shall be borne by the Company (irrespective of the determination as to Indemnitee’s entitlement to indemnification) and the Company hereby indemnifies and agrees to hold Indemnitee harmless therefrom. 

(h)    The Company acknowledges that a settlement or other disposition short of final judgment may be successful if
it permits a party to avoid expense, delay, distraction, disruption and uncertainty. In the event that any action, claim or proceeding to which Indemnitee is a party is resolved in any manner other than by adverse judgment against Indemnitee
(including, without limitation, settlement of such action, claim or proceeding with or without payment of money or other consideration) it shall be presumed that Indemnitee has been successful on the merits or otherwise in such action, suit or
proceeding. Anyone seeking to overcome this presumption shall have the burden of proof and the burden of persuasion by clear and convincing evidence. 

(i)    The termination of any Proceeding or of any claim, issue or matter therein, by judgment, order, settlement
or conviction, or upon a plea of nolo contendere or its equivalent, shall not (except as otherwise expressly provided in this Agreement) of itself adversely affect the right of Indemnitee to indemnification or create a presumption that Indemnitee
did not act in good faith and in a manner which he or she reasonably believed to be in or not opposed to the best interests of the Company or, with respect to any criminal Proceeding, that Indemnitee had reasonable cause to believe that his or her
conduct was unlawful. 
 7.    Remedies of Indemnitee. 

(a)    In the event that (i) a determination is made pursuant to Section 6 of this Agreement that
Indemnitee is not entitled to indemnification under this Agreement, (ii) advancement of Expenses is not timely made pursuant to Section 5 of this Agreement, (iii) no determination of entitlement to indemnification is made pursuant to
Section 6(b) of this Agreement within 90 days after receipt by the Company of the request for indemnification, (iv) payment of indemnification is not made pursuant to this Agreement within 10 days after receipt by the Company of a written
request therefor or (v) payment of indemnification is not made within 10 days after a determination has been made that Indemnitee is 

  
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entitled to indemnification or such determination is deemed to have been made pursuant to Section 6 of this Agreement, Indemnitee shall be entitled to an adjudication in an appropriate court
of the State of Delaware, or in any other court of competent jurisdiction, of Indemnitee’s entitlement to such indemnification. Indemnitee shall commence such proceeding seeking an adjudication within one (1) year following the date on
which Indemnitee first has the right to commence such proceeding pursuant to this Section 7(a). The Company shall not oppose Indemnitee’s right to seek any such adjudication. 

(b)    In the event that a determination shall have been made pursuant to Section 6(b) of this Agreement that
Indemnitee is not entitled to indemnification, any judicial proceeding commenced pursuant to this Section 7 shall be conducted in all respects as a de novo trial on the merits, and Indemnitee shall not be prejudiced by reason of the adverse
determination under Section 6(b). 
 (c)    If a determination shall have been made pursuant to
Section 6(b) of this Agreement that Indemnitee is entitled to indemnification, the Company shall be bound by such determination in any judicial proceeding commenced pursuant to this Section 7, absent (i) a misstatement by Indemnitee
of a material fact, or an omission of a material fact necessary to make Indemnitee’s misstatement not materially misleading in connection with the application for indemnification, or (ii) a prohibition of such indemnification under
applicable law. 
 (d)    In the event that Indemnitee, pursuant to this Section 7, seeks a judicial
adjudication of his or her rights under, or to recover damages for breach of, this Agreement, or to recover under any directors’ and officers’ liability insurance policies maintained by the Company, the Company shall pay on his or her
behalf, in advance, any and all expenses (of the types described in the definition of Expenses in Section 13 of this Agreement) actually and reasonably incurred by him or her in such judicial adjudication, regardless of whether Indemnitee
ultimately is determined to be entitled to such indemnification, advancement of expenses or insurance recovery. 

(e)    The Company shall be precluded from asserting in any judicial proceeding commenced pursuant to this
Section 7 that the procedures and presumptions of this Agreement are not valid, binding and enforceable and shall stipulate in any such court that the Company is bound by all the provisions of this Agreement. The Company shall indemnify
Indemnitee against any and all Expenses and, if requested by Indemnitee, shall (within 10 days after receipt by the Company of a written request therefore) advance, to the extent not prohibited by law, such expenses to Indemnitee, which are incurred
by Indemnitee in connection with any action brought by Indemnitee for indemnification or advance of Expenses from the Company under this Agreement or under any directors’ and officers’ liability insurance policies maintained by the
Company, regardless of whether Indemnitee ultimately is determined to be entitled to such indemnification, advancement of Expenses or insurance recovery, as the case may be. 

(f)    Notwithstanding anything in this Agreement to the contrary, no determination as to entitlement to
indemnification under this Agreement shall be required to be made prior to the final disposition of the Proceeding. 

8.    Non-Exclusivity; Survival of Rights; Insurance; Primacy of
Indemnification; Subrogation. 
 (a)    The rights of indemnification as provided by this Agreement shall not
be deemed exclusive of any other rights to which Indemnitee may at any time be entitled under applicable law, the Certificate of Incorporation, the Bylaws, any agreement, a vote of stockholders, a resolution of Board or otherwise. No amendment,
alteration or repeal of this Agreement or of any provision hereof shall limit or restrict any right of Indemnitee under this Agreement in respect of any action taken or omitted by such Indemnitee in his or her Corporate Status prior to such
amendment, alteration or repeal. To the extent that a change in the DGCL, whether by statute or judicial decision, permits greater indemnification than would be afforded currently under the Certificate of Incorporation, Bylaws and this Agreement, it
is the 

  
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intent of the parties hereto that Indemnitee shall enjoy all greater benefits so afforded by such change. No right or remedy herein conferred is intended to be exclusive of any other right or
remedy, and every other right and remedy shall be cumulative and in addition to every other right and remedy given hereunder or now or hereafter existing at law or in equity or otherwise. The assertion or employment of any right or remedy hereunder,
or otherwise, shall not prevent the concurrent assertion or employment of any other right or remedy. 
 (b)    To
the extent that the Company maintains an insurance policy or policies providing liability insurance for directors, officers, employees, or agents or fiduciaries of the Company or of any other corporation, partnership, joint venture, trust, employee
benefit plan or other enterprise that such person serves at the request of the Company, the Company shall procure such insurance policy or policies under which the Indemnitee shall be covered in accordance with its or their terms to the maximum
extent of the coverage available for any director, officer, employee, agent or fiduciary under such policy or policies. If, at the time of the receipt of a notice of a claim pursuant to the terms hereof, the Company has director and officer
liability insurance in effect, the Company shall give prompt notice of the commencement of such proceeding to the insurers in accordance with the procedures set forth in the respective policies. The Company shall thereafter take all necessary or
desirable action to cause such insurers to pay, on behalf of the Indemnitee, all amounts payable as a result of such proceeding in accordance with the terms of such policies. 

(c)    The Company hereby acknowledges that Indemnitee has or may have in the future certain rights to
indemnification, advancement of expenses and/or insurance provided by other entities and/or organizations (collectively, the “Secondary Indemnitors”). The Company hereby agrees (i) that it is the indemnitor of first
resort (i.e., its obligations to Indemnitee are primary and any obligation of the Secondary Indemnitors to advance expenses or to provide indemnification for the same expenses or liabilities incurred by Indemnitee are secondary), (ii) that it shall
be required to advance the full amount of expenses incurred by Indemnitee and shall be liable for the full amount of all Expenses, judgments, penalties, fines and amounts paid in settlement to the extent legally permitted and as required by the
terms of this Agreement and the Certificate of Incorporation or Bylaws of the Company (or any other agreement between the Company and Indemnitee), without regard to any rights Indemnitee may have against the Secondary Indemnitors, and,
(iii) that it irrevocably waives, relinquishes and releases the Secondary Indemnitors from any and all claims against the Secondary Indemnitors for contribution, subrogation or any other recovery of any kind in respect thereof. The Company
further agrees that no advancement or payment by the Secondary Indemnitors on behalf of Indemnitee with respect to any claim for which Indemnitee has sought indemnification from the Company shall affect the foregoing and the Secondary Indemnitors
shall have a right of contribution and/or be subrogated to the extent of such advancement or payment to all of the rights of recovery of Indemnitee against the Company. The Company and Indemnitee agree that the Secondary Indemnitors are express
third party beneficiaries of the terms of this Section 8(c). 
 (d)    Except as provided in paragraph
(c) above, in the event of any payment under this Agreement, the Company shall be subrogated to the extent of such payment to all of the rights of recovery of Indemnitee (other than against the Secondary Indemnitors), who shall execute all
papers required and take all action necessary to secure such rights, including execution of such documents as are necessary to enable the Company to bring suit to enforce such rights. 

(e)    Except as provided in paragraph (c) above, the Company shall not be liable under this Agreement to make
any payment of amounts otherwise indemnifiable hereunder if and to the extent that Indemnitee has otherwise actually received such payment under any insurance policy, contract, agreement or otherwise. 

  
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 (f)    Except as provided in paragraph (c) above, the
Company’s obligation to indemnify or advance Expenses hereunder to Indemnitee who is or was serving at the request of the Company as a director, officer, employee or agent of any other corporation, partnership, joint venture, trust, employee
benefit plan or other enterprise shall be reduced by any amount Indemnitee has actually received as indemnification or advancement of expenses from such other corporation, partnership, joint venture, trust, employee benefit plan or other enterprise.

 9.    Exceptions to Right of Indemnification. Notwithstanding any provision in this Agreement, the
Company shall not be obligated under this Agreement to make any indemnity in connection with any claim made against Indemnitee: 

(a)    for which payment has actually been made to or on behalf of Indemnitee under any insurance policy or other
indemnity provision, except with respect to any excess beyond the amount paid under any insurance policy or other indemnity provision, provided, that the foregoing shall not affect the rights of Indemnitee or the Secondary Indemnitors set forth in
Section 8(c) above; 
 (b)    for an accounting of profits made from the purchase and sale (or sale and
purchase) by Indemnitee of securities of the Company within the meaning of Section 16(b) of the Exchange Act, or similar provisions of state statutory law or common law; 

(c)    in connection with any Proceeding (or any part of any Proceeding) initiated by Indemnitee, including any
Proceeding (or any part of any Proceeding) initiated by Indemnitee against the Company or its directors, officers, employees or other indemnitees, unless (i) the Board authorized the Proceeding (or any part of any Proceeding) prior to its
initiation or (ii) the Company provides the indemnification, in its sole discretion, pursuant to the powers vested in the Company under applicable law; 

(d)    with respect to remuneration paid to Indemnitee if it is determined by final judgment or other final
adjudication that such remuneration was in violation of law (and, in this respect, both the Company and Indemnitee have been advised that the Securities and Exchange Commission believes that indemnification for liabilities arising under the federal
securities laws is against public policy and is, therefore, unenforceable and that claims for indemnification should be submitted to appropriate courts for adjudication, as indicated in the last paragraph of this Section 9 below); 

(e)     a final judgment or other final adjudication is made that Indemnitee’s conduct was in bad faith,
knowingly fraudulent or deliberately dishonest or constituted willful misconduct (but only to the extent of such specific determination); 

(f)    in connection with any claim for reimbursement of the Company by Indemnitee of any bonus or other
incentive-based or equity-based compensation or of any profits realized by Indemnitee from the sale of securities of the Company, as required in each case under the Exchange Act (including any such reimbursements that arise from an accounting
restatement of the Company pursuant to Section 304 of the Sarbanes-Oxley Act, or the payment to the Company of profits arising from the purchase and sale by Indemnitee of securities in violation of Section 306 of the Sarbanes-Oxley Act),
if Indemnitee is held liable therefor (including pursuant to any settlement); or 
 (g)    on account of conduct
that is established by a final judgment as constituting a breach of Indemnitee’s duty of loyalty to the Company or resulting in any personal profit or advantage to which Indemnitee is not legally entitled. 

For purposes of this Section 9, a final judgment or other adjudication may be reached in either the underlying proceeding or action in
connection with which indemnification is sought or a separate proceeding or action to establish rights and liabilities under this Agreement. 

  
 9 

 Any provision herein to the contrary notwithstanding, the Company shall not be obligated
pursuant to the terms of this Agreement to indemnify Indemnitee or otherwise act in violation of any undertaking appearing in and required by the rules and regulations promulgated under the Securities Act, or in any registration statement filed with
the SEC under the Securities Act. Indemnitee acknowledges that paragraph (h) of Item 512 of Regulation S-K promulgated under the Securities Act currently generally requires the Company to undertake in
connection with any registration statement filed under the Securities Act to submit the issue of the enforceability of Indemnitee’s rights under this Agreement in connection with any liability under the Securities Act on public policy grounds
to a court of appropriate jurisdiction and to be governed by any final adjudication of such issue. Indemnitee specifically agrees that any such undertaking shall supersede the provisions of this Agreement and to be bound by any such undertaking.

 10.    Duration of Agreement. All agreements and obligations of the Company contained herein shall
continue during the period Indemnitee is an officer or director of the Company (or is or was serving at the request of the Company as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other
enterprise) and shall continue thereafter so long as Indemnitee shall be subject to any Proceeding (or any proceeding commenced under Section 7 hereof) by reason of his or her Corporate Status, whether or not he or she is acting or serving in
any such capacity at the time any liability or expense is incurred for which indemnification can be provided under this Agreement. This Agreement shall be binding upon and inure to the benefit of and be enforceable by the parties hereto and their
respective successors (including any direct or indirect successor by purchase, merger, consolidation or otherwise to all or substantially all of the business or assets of the Company), assigns, spouses, heirs, executors and personal and legal
representatives. 
 11.    Security. To the extent requested by Indemnitee and approved by the Board, the
Company may at any time and from time to time provide security to Indemnitee for the Company’s obligations hereunder through an irrevocable bank line of credit, funded trust or other collateral. Any such security, once provided to Indemnitee,
may not be revoked or released without the prior written consent of the Indemnitee. 
 12.    Enforcement.

 (a)    The Company expressly confirms and agrees that it has entered into this Agreement and assumes the
obligations imposed on it hereby in order to induce Indemnitee to serve as an officer or director of the Company, and the Company acknowledges that Indemnitee is relying upon this Agreement in serving as an officer or director of the Company. 

(b)    Other than as provided herein, this Agreement constitutes the entire agreement between the parties hereto
with respect to the subject matter hereof and supersedes all prior agreements and understandings, oral, written and implied, between the parties hereto with respect to the subject matter hereof. 

13.    Definitions. For purposes of this Agreement: 

(a)    “Beneficial Owner” shall have the meaning given to such term in Rule 13d-3 under the Exchange Act; provided, however, that Beneficial Owner shall exclude any Person otherwise becoming a Beneficial Owner by reason of the stockholders of the Company approving a merger of the Company
with another entity. 
 (b)    “Board” means the Board of Directors of the Company. 

  
 10 

 (c)    “Change in Control” means the
earliest to occur after the date of this Agreement of any of the following events: 
 (i)    Acquisition of
Stock by Third Party. Any Person is or becomes the Beneficial Owner (as defined above), directly or indirectly, of securities of the Company representing 25% or more of the combined voting power of the Company’s then outstanding
securities; 
 (ii)    Change in Board. During any period of two (2) consecutive years (not
including any period prior to the execution of this Agreement), 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 clause (i), (ii) or (iv) of this definition of Change in control) 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 period or whose election or nomination for election was previously so approved, cease for any reason to constitute a
least a majority of the members of the Board; 
 (iii)    Corporate Transactions. The effective date of a
merger or consolidation of the Company with any other entity, other than a merger or consolidation which would result in the voting securities of the Company outstanding immediately prior to such merger or consolidation continuing to represent
(either by remaining outstanding or by being converted into voting securities of the surviving entity) more than 51% of the combined voting power of the voting securities of the surviving entity outstanding immediately after such merger or
consolidation and with the power to elect at least a majority of the Board or other governing body of such surviving entity; 

(iv)    Liquidation. The approval by the stockholders of the Company of a complete liquidation of the
Company or an agreement for the sale or disposition by the Company of all or substantially all of the Company’s assets; and 

(v)    Other Events. There occurs any other event of a nature that would be required to be reported in
response to Item 6(e) of Schedule 14A of Regulation 14A (or a response to any similar item on any similar schedule or form) promulgated under the Exchange Act, whether or not the Company is then subject to such reporting requirement. 

(d)    “Corporate Status” describes the status of a person who is or was a director,
officer, employee, agent or fiduciary of the Company or of any other corporation, partnership, joint venture, trust, employee benefit plan or other enterprise that such person is or was serving at the express written request of the Company. 

(e)    “Disinterested Director” means a
non-executive director of the Company who is not and was not a party to the Proceeding in respect of which indemnification is sought by Indemnitee. 

(f)    “Enterprise” shall mean the Company and any other corporation, partnership, joint
venture, trust, employee benefit plan or other enterprise that Indemnitee is or was serving at the express written request of the Company as a director, officer, employee, agent or fiduciary. 

(g)    “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended. 

(h)    “Expenses” shall include all documented and reasonable attorneys’ fees,
retainers, court costs, transcript costs, fees of experts, witness fees, travel expenses, duplicating costs, printing and binding costs, telephone charges, postage, delivery service fees and all other disbursements or expenses of the types
customarily incurred in connection with prosecuting, defending, preparing to prosecute or defend, investigating, participating, or being or preparing to be a witness in a Proceeding, or responding to, or objecting to, a request to provide discovery
in any Proceeding. Expenses also shall include Expenses incurred in connection with any appeal resulting from any Proceeding and any federal, state, local or foreign taxes imposed on the Indemnitee as a result of the actual or deemed receipt of any
payments under this Agreement, including without limitation the premium, security for, and other costs relating to any cost bond, supersede as bond, or other appeal bond or its equivalent. Expenses, however, shall not include amounts paid in
settlement by Indemnitee or the amount of judgments or fines against Indemnitee. 

  
 11 

 (i)    “Independent Counsel” means a law
firm, or a member of a law firm, that is experienced in matters of corporation law and neither presently is, nor in the past five years has been, retained to represent: (i) the Company or Indemnitee in any matter material to either such party
(other than with respect to matters concerning Indemnitee under this Agreement, or of other indemnitees under similar indemnification agreements), or (ii) any other party to the Proceeding giving rise to a claim for indemnification hereunder.
Notwithstanding the foregoing, the term “Independent Counsel” shall not include any person who, under the applicable standards of professional conduct then prevailing, would have a conflict of interest in representing either the Company or
Indemnitee in an action to determine Indemnitee’s rights under this Agreement. The Company agrees to pay the reasonable fees of the Independent Counsel referred to above and to fully indemnify such counsel against any and all Expenses, claims,
liabilities and damages arising out of or relating to this Agreement or its engagement pursuant hereto. 

(j)    “Person” for purposes of the definition of Beneficial Owner and Change in Control
set forth above, shall have the meaning as set forth in Sections 13(d) and 14(d) of the Exchange Act; provided, however, that Person shall exclude (i) the Company, (ii) any trustee or other fiduciary holding securities under an employee
benefit plan of the Company, and (iii) any corporation owned, directly or indirectly, by the stockholders of the Company in substantially the same proportions as their ownership of stock of the Company. 

(k)    “Proceeding” includes any threatened, pending or completed action, suit,
arbitration, alternate dispute resolution mechanism, investigation, inquiry, administrative hearing or any other actual, threatened or completed proceeding, whether brought by or in the right of the Company or otherwise and whether civil, criminal,
administrative or investigative, in which Indemnitee was, is or will be involved as a party or otherwise, by reason of the fact that Indemnitee is or was an officer or director of the Company, by reason of any action taken by him or her or of any
inaction on his or her part while acting as an officer or director of the Company, or by reason of the fact that he or she is or was serving at the request of the Company as a director, officer, employee, agent or fiduciary of another corporation,
partnership, joint venture, trust or other Enterprise; in each case whether or not he or she is acting or serving in any such capacity at the time any liability or expense is incurred for which indemnification can be provided under this Agreement;
including one pending on or before the date of this Agreement, but excluding one initiated by an Indemnitee pursuant to Section 7 of this Agreement to enforce his or her rights under this Agreement. 

(l)    “Sarbanes-Oxley Act” shall mean the Sarbanes-Oxley Act of 2002, as amended. 

(m)    “SEC” shall mean the Securities and Exchange Commission. 

(n)    “Securities Act” shall mean the Securities Act of 1933, as amended. 

14.    Severability. The invalidity or unenforceability of any provision hereof shall in no way affect the
validity or enforceability of any other provision. Further, the invalidity or unenforceability of any provision hereof as to the Indemnitee shall in no way affect the validity or enforceability of any provision hereof as to the other. Without
limiting the generality of the foregoing, this Agreement is intended to confer upon Indemnitee indemnification rights to the fullest extent permitted by applicable laws. In the event any provision hereof conflicts with any applicable law, such
provision shall be deemed modified, consistent with the aforementioned intent, to the extent necessary to resolve such conflict. 

  
 12 

 15.    Modification and Waiver. No supplement,
modification, termination or amendment of this Agreement shall be binding unless executed in writing by both of the parties hereto. No waiver of any of the provisions of this Agreement shall be deemed or shall constitute a waiver of any other
provisions hereof (whether or not similar) nor shall such waiver constitute a continuing waiver. 

16.    Notice By Indemnitee. Indemnitee agrees promptly to notify the Company in writing upon being served
with or otherwise receiving any summons, citation, subpoena, complaint, indictment, information or other document relating to any Proceeding or matter which may be subject to indemnification covered hereunder. The failure to so notify the Company
shall not relieve the Company of any obligation which it may have to Indemnitee under this Agreement or otherwise unless and only to the extent that such failure or delay materially prejudices the Company. 

17.    Notices. All notices and other communications given or made pursuant to this Agreement shall be in
writing and shall be deemed effectively given: (a) upon personal delivery to the party to be notified, (b) when sent by confirmed electronic mail or facsimile if sent during normal business hours of the recipient, and if not so confirmed,
then on the next business day, (c) five (5) days after having been sent by registered or certified mail, return receipt requested, postage prepaid, or (d) one (1) day after deposit with a nationally recognized overnight courier, specifying
next day delivery, with written verification of receipt. All communications shall be sent: 
  

	 	(a)	 To Indemnitee at the address set forth below Indemnitee’s signature hereto. 

 

	 	(b)	 To the Company at: 

Sonim Technologies, Inc. 
 1875
South Grant Street 
 Suite 750 

San Mateo, CA 94402 
 or to such other address
as may have been furnished to Indemnitee by the Company or to the Company by Indemnitee, as the case may be. 

18.    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 Agreement. This Agreement may also be executed and delivered by facsimile signature, electronic mail (including .pdf or any electronic signature complying with the U.S.
Federal ESIGN Act of 2000, e.g., www.docusign.com) or other transmission method and 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 and be deemed to have
been duly and validly delivered and be valid and effective for all purposes. 
 19.    Headings. The
headings of the paragraphs of this Agreement are inserted for convenience only and shall not be deemed to constitute part of this Agreement or to affect the construction thereof. 

20.    Governing Law and Consent to Jurisdiction. This Agreement and the legal relations among the parties
shall be governed by, and construed and enforced in accordance with, the laws of the State of Delaware, without regard to its conflict of laws rules. The Company and Indemnitee hereby irrevocably and unconditionally (i) agree that any action or
proceeding arising out of or in connection with this Agreement shall be brought only in the Chancery Court of the State of Delaware (the “Delaware Court”), and not in any other state or federal court in the United States of
America or any court in any other country, (ii) consent to submit to the exclusive jurisdiction of the Delaware Court for purposes of any action or proceeding arising out of or in connection with this Agreement, (iii) appoint, to the
extent such party is not otherwise subject to service of process in the State of Delaware, irrevocably Corporation 

  
 13 

 
Service Company as its agent in the State of Delaware for acceptance of legal process in connection with any such action or proceeding against such party with the same legal force and validity as
if served upon such party personally within the State of Delaware, (iv) waive any objection to the laying of venue of any such action or proceeding in the Delaware Court, and (v) waive, and agree not to plead or to make, any claim
that any such action or proceeding brought in the Delaware Court has been brought in an improper or inconvenient forum. 
 [SIGNATURE
PAGE TO FOLLOW] 

  
 14 

 IN WITNESS WHEREOF, the
parties hereto have executed this Agreement on and as of the day and year first above written. 
  

			
	SONIM TECHNOLOGIES, INC.

 
			
		
	By:	 	 

 
			
	Name: Robert Plaschke
	Title: Chief Executive Officer

  

	
	INDEMNITEE
	
	   

	Name:
	
	Address:EX-10.5

 Exhibit 10.5 
  

 
 August 18, 2018 

Mr. Robert Plaschke 
 Re: Employment Agreement 

Dear Bob: 
 This letter agreement (the
“Agreement”) confirms the revised terms of your employment with Sonim Technologies, Inc. (the “Company” or “Sonim”). This Agreement and these employment terms supersede and
replace in their entirety any and all previous promises, representations or agreements on the subjects covered herein, including (without limitation) your offer letter from the Company dated December 15, 2011 as amended a number of times, most
recently on April 26, 2018 (collectively, the “Offer Letter”). 
 1. Position and Duties. You
will serve as the Company’s President, Chief Executive Officer (the “CEO”), and Chairman of the Company’s Board of Directors (the “Board”). You will work at our facility located in San Mateo,
California. Of course, Sonim may change your position, duties, and work location from time to time, as it deems necessary. You will devote your full business time and attention to the business affairs of the Company, except for reasonable vacations
and periods of illness or incapacity. As a Sonim employee, you will be expected to abide by Company rules and policies and to acknowledge in writing that you have read the Company’s Employee handbook. 

2. Compensation and Benefits. 

(a) Base Salary. Effective as of July 1, 2018, you will receive an annual base salary of $33,333.33 monthly ($400,000.00
annualized), less required and designated payroll deductions and withholdings, and payable according to the Company’s regular payroll schedule. 

(b) Benefits. You will be eligible to participate in the Company’s standard employee benefits pursuant to the terms,
conditions and limitations of the applicable benefit plans. The Company will fund up to $22,500 per year for your participation in World Presidents Organization activities, following submission of invoices or receipts for any such expenses. In the
event of the consummation of a Change in Control in 2018, the Company will use its reasonable best efforts to ensure that the benefits provided to you following the Change in Control (assuming your employment continues) will be equal to or greater
than the benefits provided to you as of the date of this Agreement. 
 (c) Cash Bonus Plan. As a member of senior management of
the Company, you will be eligible to participate under the Company’s Cash Bonus Plan, the current terms of which are set forth on Exhibit A attached hereto. Notwithstanding the terms of the Company’s Cash Bonus Plan that require your
continued employment through the determination date of payment of an earned cash bonus, in the event that the Company terminates your employment for any reason, or your employment terminates due to your death or permanent disability, or you resign
for Good Reason, you will be entitled to receive a pro-rata payment of your Target Bonus for the year of your termination based on the number of months of your employment during the applicable bonus year and
based on full achievement of the EBITDA target under the Cash Bonus Plan. 

 

 
 August 18, 2018 
 Page Two

  

 3. Benefits in Connection with a Liquidity Event. 

(a) Liquidity Event Bonus. Upon the first to occur following the date hereof and during the term of your employment under this
Agreement of (y) a Change in Control in which the Company’s Enterprise Value is at least $125 million (a “Qualified Change in Control”) or (z) a Public Listing (the first of such events to occur, a
“Qualified Liquidity Event”) you shall be entitled to the benefits provided under either Section 3(a)(i) or 3(a)(ii), as applicable, without duplication: 

(i) In the event the Qualified Liquidity Event is a Public Listing, subject to approval by the Board at that time, the Company will
grant you, as of immediately prior to the consummation of such Public Listing, a restricted stock award in consideration for your past services to the Company (the “New Equity Award”) pursuant to the Sonim Technologies, Inc.
2012 Equity Incentive Plan (the “Plan”) for a number of shares of the Company’s common stock that equals 2% of the Company’s fully-diluted capitalization as of the date of grant and including any securities that may
be issued by the Company in connection with the Public Listing. The New Equity Award shall be subject to the terms and conditions of the Plan, any amendments thereto, and the applicable grant notice and award agreement, shall be subject to a 9-month lockup period, and shall vest as follows: 
 (1) In the event the Company’s or any
parent or successor entity’s capital stock is traded on a nationally or regionally recognized securities exchange, (1) 50% of the shares subject to the New Equity Award shall vest once the Company’s Enterprise Value equals or exceeds
$125 million and (2) 100% of the shares subject to the New Equity Award shall vest once the Company’s Enterprise Value equals or exceeds $150 million; 

(2) In the event the Company’s or any parent or successor entity’s capital stock is quoted for trading on an over-the-counter bulletin board, (1) 50% of the shares subject to the New Equity Award shall vest upon the bona fide sale of, in the aggregate, in a single transaction or in a
series of related transactions, 25% or more of the shares of the Company’s capital stock held, as of the date hereof, by Financial Investors; and (2) 100% of the shares subject to the New Equity Award shall vest upon the bona fide sale of, in
the aggregate, in a single transaction or in a series of related transactions, 50% or more of the shares of the Company’s capital stock held, as of the date hereof, by Financial Investors; provided, that any sale or other transfer among
Financial Investors, or by a Financial Investor to an affiliate thereof, shall not constitute a bona fide sale under this Section 3(a)(i)(2).  

(ii) In the event the Qualified Liquidity Event is a Qualified Change in Control, the Company will pay you a bonus that is equal to 2%
of the Company’s Enterprise Value (the “Change in Control Bonus”). The Change in Control Bonus shall be paid in the same form of consideration paid by the acquirer to the Company’s stockholders, and in the event any
percentage of the consideration is payable to the Company’s stockholders, if at all, following the closing of the Change in Control (pursuant to an escrow, holdback, earnout or otherwise), an equal percentage of the Change in Control Bonus
shall be subject to the same conditions on payment and subject to compliance with the terms of Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”). 

(b) Vesting Acceleration Benefit. The vesting of each of your outstanding unvested stock options or stock awards previously
granted to you by the Company shall accelerate in full as of immediately prior to the effective date of a Change in Control. This acceleration benefit may result in loss of “incentive stock option” status for certain of your unvested stock
options. The Company makes no representation as to the tax treatment of any such options. You should consult your own tax advisors with regard to the impact this acceleration benefit may have on the taxation of stock option exercises in the future.

 

 
 August 18, 2018 
 Page Three

  

 4. Proprietary Information Agreement and Company Policies. At the time of
commencement of your employment, you executed an Employment, Confidential Information and Invention Assignment Agreement with the Company (the “Proprietary Information Agreement”), a copy of which is attached hereto as
Exhibit B. You acknowledge and agree that you continue to be required to comply with the Proprietary Information Agreement as a condition of your continued employment. In addition, you agree that you will continue to comply with the Company’s
policies and procedures generally regarding proprietary and confidential information and otherwise as are in effect from time to time. 

5. No Conflicts. During the term of your employment with the Company, except on behalf of the Company, you agree not to directly
or indirectly, whether as an officer, director, employee, stockholder, partner, proprietor, associate, representative, consultant, agent, or in any capacity whatsoever, engage in, become financially interested in, be employed by or have any business
connection with any other person, corporation, firm, partnership or other entity whatsoever which is known by you to compete directly with the Company, throughout the world, in any line of business engaged in (or planned to be engaged in) by the
Company; provided, however, that you may own, as a passive investor, securities of any publicly-held competitor corporation, so long as your direct holdings in any one such corporation shall not in the aggregate constitute more than 1% of the voting
stock of such corporation. 
 6. At-Will Employment Relationship. Your employment
relationship continues to be terminable at will, and either you or the Company may terminate your employment relationship at any time, with or without Cause, and with or without advance notice. In addition, the Company may modify the other terms and
conditions of your employment, including, but not limited to, compensation, benefits, position, title, reporting relationship and office location, from time to time in its sole discretion. Your at-will
employment relationship can only be changed in a written agreement signed by you and the Chief Financial Officer or by a duly authorized member of the Board. 

7. Severance Benefits. 

(a) Termination by the Company without Cause; Termination Due to Death or Disability; Resignation for Good Reason Prior to a Change
in Control. If at any time prior to a Change in Control, or more than thirteen (13) months after a Change in Control, the Company terminates your employment without Cause, or your employment terminates due to your death or permanent
disability, or you resign for Good Reason, and provided such termination constitutes a “separation from service” (as defined under Treasury Regulation Section 1.409A-1(h), without regard to any
alternative definition thereunder, a “Separation from Service”), then subject to your obligations below, the Company will provide you the following severance benefits: 

(i) the Company will make severance payments to you in the form of salary continuation payments for a period of twelve (12) months
at the rate of your base salary in effect as of your termination date, less required and designated payroll deductions and withholdings; and 

(ii) if you timely elect continued health insurance coverage under COBRA, the Company will reimburse you the cost of your COBRA
premiums to continue your coverage (including coverage for eligible dependents, if applicable) (“COBRA Premiums”) through the period (the “COBRA Premium Period”) starting on the Separation Date and
ending on the earliest to occur of: (x) twelve (12) months after your termination (y) the date you become eligible for group health insurance coverage through a new employer; or (z) the date you cease to be eligible for COBRA
continuation coverage for any reason, including plan termination. In the event you become covered under another employer’s group health plan or otherwise cease to be eligible for COBRA during the COBRA Premium Period, you must immediately
notify the Company in writing of such event. 

 

 
 August 18, 2018 
 Page Four

  

 (b) Termination by the Company without Cause, or Resignation for Good Reason,
Following Change in Control. If at any time within thirteen (13) months after a Change in Control, the Company terminates your employment without Cause or you resign for Good Reason, and provided such termination constitutes a Separation
from Service, then subject to your obligations below, the Company will provide you with the following severance benefits: 
 (i) the
Company will make severance payments to you in the form of salary continuation payments for a period of eighteen (18) months at the rate of your base salary in effect as of your termination date, less required and designated payroll deductions
and withholdings; 
 (ii) if you timely elect continued health insurance coverage under COBRA, the Company will reimburse you for
your COBRA Premiums through the period (the “CIC COBRA Premium Period”) starting on the Separation Date and ending on the earliest to occur of: (x) eighteen (18) months after your termination (y) the date you become
eligible for group health insurance coverage through a new employer; or (z) the date you cease to be eligible for COBRA continuation coverage for any reason, including plan termination. In the event you become covered under another
employer’s group health plan or otherwise cease to be eligible for COBRA during the CIC COBRA Premium Period, you must immediately notify the Company in writing of such event; and 

(iii) the vesting of any then-outstanding stock options/awards as of your termination date shall be accelerated such that the stock
option/award shares that would have vested had you remained employed for two years following the date of your termination shall vest and become immediately exercisable as of your termination date. 

(iv) For purposes of clarity, if you receive severance benefits under this section 7(b), you shall not be eligible for severance
benefits under sections 7(a) or 7(c). 
 (c) Termination by the Company with Cause: Resignation Not for Good Reason. If at any
time the Company terminates your employment with Cause or you resign from your employment without Good Reason, and provided such termination constitutes a Separation from Service, then subject to your obligations below, the Company will make
severance payments to you at the rate of your base salary in effect as of your termination date for a period of three (3) months, less required and designated payroll deductions and withholdings. 

(d) Contingent Severance Payment. If at any time the Company terminates your employment, or you resign from your employment with
the Company, for any reason, and provided such termination constitutes a Separation from Service, then subject to your obligations below, the Company will make an additional severance payment to you in an aggregate amount of $140,000, less required
and designated payroll deductions and withholdings, which shall be paid in four (4) equal quarterly payments commencing on the first day of the initial quarter following the termination date. The foregoing additional severance payment will not
be payable in the event that a bonus payment is made under Section 3(a) hereof in connection with a Qualified Liquidity Event. 

(e) The severance benefits described above are conditional upon (a) your continuing to comply with your obligations under your
Proprietary Information Agreement; and (b) your delivering to the Company an effective, general release of claims in favor of the Company in a form acceptable to the Company within 30 days following your Separation from Service. The salary
continuation payments will be paid in equal installments on the Company’s regular payroll schedule and will be subject to applicable tax withholdings over the period outlined above following the date of your Separation from Service; provided,
however, that no payments will be made prior to the 30th day following your Separation from Service. On 

 

 
 August 18, 2018 
 Page Five

  

 
the 30th day following your Separation from Service, the Company will pay you in a lump sum the salary continuation payments that you would have received on or prior to such date under the
original schedule but for the delay while waiting for the 30th day in compliance with Section 409A of the Code and the effectiveness of the release, with the balance of the salary continuation payments being paid as originally scheduled. 

8. Definitions. 

(a) Cause. For purposes of this Agreement, “Cause” is defined as any of the following: (i) theft,
dishonesty, or falsification of any employment or Company record; (ii) conviction (including any plea of guilty or nolo contendere) of a felony or any criminal act that impairs your ability to perform your duties with the Company;
(iii) failure or inability to perform any reasonable assigned duties after notice from the Company of, and a reasonable opportunity to cure, such failure or inability, if capable of cure; (iv) improper disclosure of the Company’s
confidential or proprietary information; (v) commission of an intentional or grossly negligent act that has a material detrimental effect on the Company’s reputation or business; or (vi) any material breach of any written agreement
with the Company, which breach is not cured pursuant to the terms of such agreement, if capable of cure, or a material breach of a confidentiality or proprietary information and inventions agreement, which breach shall be deemed noncurable. 

(b) Change in Control. For purposes of this Agreement, a “Change in Control” is defined as (i) the
consummation of an “Acquisition” or “Asset Transfer” as defined in the Company’s then-current Amended and Restated Certificate of Incorporation and (ii) regardless of whether such transaction
constitutes an “Acquisition” or “Asset Transfer”, the consummation of a transaction in which a publicly-listed company (“PubCo”) acquires the Company (by way of merger or asset sale) in exchange for PubCo
stock. 
 (c) Good Reason. For purposes of this Agreement, you will have “Good Reason” for your
resignation from your employment with the Company if any of the following actions are taken by the Company without your express written consent: 

(i) any failure by the Company to pay, or any material reduction by the Company of (a) your base salary in effect immediately
prior to such failure to pay or reduction (unless reductions comparable in amount and duration are concurrently made generally for employees of the Company with responsibilities, organizational level and title comparable to your own), or
(b) your bonus compensation amount eligibility, if any, in effect immediately prior to the date of such failure to pay or such reduction (subject to applicable performance requirements with respect to the actual amount of bonus compensation you
earn); 
 (ii) the assignment of any duties, or the reduction of your responsibilities or duties, that are materially inconsistent
with your position, duties, responsibilities and status with the Company immediately prior to such assignment or reduction; provided, however, that your assignment to an operating division of an acquiring company that includes the business of the
Company following an acquisition, pursuant to which your duties are commensurate with the duties you had before the acquisition, except that the business of the Company is no longer independent but contained in a division, shall not be deemed a
material reduction of your responsibilities, duties, or status hereunder and your resignation in connection therewith shall not be deemed for “Good Reason;” or 

(iii) the relocation of your principal place of employment to a location that is more than fifty (50) miles from the County of San
Mateo in the State of California; 

 

 
 August 18, 2018 
 Page Six

  

 provided, however, that to resign for Good Reason, you must (1) provide written
notice to the CFO within 30 days after the first occurrence of the event giving rise to Good Reason setting forth the basis for your resignation, (2) allow the Company at least 30 days from receipt of such written notice to cure such event, and
(3) if such event is not reasonably cured within such period, your resignation from all positions you then hold with the Company is effective not later than 90 days after the expiration of the cure period. 

(d) “Enterprise Value” means (i) in the event of a Change in Control, the aggregate amount of consideration
payable to or on behalf of the Company and/or its stockholders, including (A) the aggregate consideration paid for the Company’s then outstanding securities, (B) the amount paid to retire or satisfy any outstanding Company
indebtedness for borrowed money, or the amount of any such indebtedness that is assumed in connection with such Change in Control, (C) any amounts placed into escrow in connection with such Change in Control, and (D) the present value of
any contingent consideration or earn-outs to be paid in the future; (ii) notwithstanding subpart (i) above, in the event of a Public Listing, (A) the initial price to the public of the Company’s Common Stock multiplied by all
outstanding shares of Common Stock immediately prior to the Public Listing (assuming full conversion and exercise of all convertible and exercisable securities) plus (B) the aggregate consideration received by the Company for the sale of the
Company’s capital stock in connection with the Public Listing, if applicable; and (iii) following a Public Listing, the 45-day trailing average of the closing price to the public of the
Company’s Common Stock multiplied by all outstanding shares of Common Stock as of the date of the calculation (assuming full conversion and exercise of all convertible and exercisable securities). 

(e) “Financial Investor” shall refer to the BR Investors (as such term is defined in the Third Omnibus Amendment to the
Amended and Restated Investor Rights Agreement, Amended and Restated Voting Agreement and Amended and Restated Right of First Refusal and Co-Sale Agreement dated as of October 26, 2017 between the Company
and certain of its investors), Investec Investments (UK) Limited, Verdoso Investments S.A., Verdoso Holdings Limited, Waveland Ventures V-Common, LLC, Waveland Ventures
V-E, LLC, Waveland Capital Partners LLC, Motorola Solutions, Inc. and JVC Kenwood Corporation; for purposes of clarity, the Financial Investors hold, in the aggregate, as of the date hereof, 166,679,695 shares
of the Company’s Common Stock (on an as-converted basis). 
 (f) “Liquidity
Event” shall refer to a Change in Control or Public Listing. 
 (g) “Public Listing” means the public
listing of the Company’s or any parent or successor entity’s capital stock for trading on a nationally or regionally recognized securities exchange or an
over-the-counter bulletin board. 
 9. Code
Section 409A. It is intended that all of the benefits and payments under this Agreement satisfy, to the greatest extent possible, the exemptions from the application of Code Section 409A provided under Treasury
Regulations 1.409A-1(b)(4), 1.409A-1(b)(5) and 1.409A-1(b)(9), and this Agreement will be construed to the greatest extent
possible as consistent with those provisions. If not so exempt, this Agreement (and any definitions hereunder) will be construed in a manner that complies with Code Section 409A, and incorporates by reference all required definitions and
payment terms. For purposes of Code Section 409A (including, without limitation, for purposes of Treasury Regulation Section 1.409A-2(b)(2)(iii)), your right to receive any installment payments under
this Agreement (whether severance payments, reimbursements or otherwise) will be treated as a right to receive a series of separate payments and, accordingly, each installment payment hereunder will at all times be considered a separate and distinct
payment. Notwithstanding any provision to the contrary in this Agreement, if you are deemed by the Company at the time of your Separation from Service to be a “specified employee” for purposes of Code Section 409A(a)(2)(B)(i), and if
any of the payments upon Separation from Service set forth herein and/or under any other agreement with the Company are deemed to be “deferred compensation”, then if delayed 

 

 
 August 18, 2018 
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commencement of any portion of such payments is required to avoid a prohibited distribution under Code Section 409A(a)(2)(B)(i) and the related adverse taxation under Section 409A, the
timing of the payments upon a Separation from Service will be delayed as follows: on the earlier to occur of (i) the date that is six months and one day after the effective date of your Separation from Service, and (ii) the date of the
your death (such earlier date, the “Delayed Initial Payment Date”), the Company will (A) pay to you a lump sum amount equal to the sum of the payments upon Separation from Service that you would otherwise have received
through the Delayed Initial Payment Date if the commencement of the payments had not been delayed pursuant to this paragraph, and (B) commence paying the balance of the payments in accordance with the applicable payment schedules set forth
above. No interest will be due on any amounts so deferred. 
 10. Entire Agreement. This Agreement, including the Proprietary
Information Agreement, constitutes the complete, final and exclusive embodiment of the entire agreement between you and the Company with respect to the terms and conditions of your employment. If you enter into this Agreement, you are doing so
voluntarily, and without reliance on any promise, warranty, representation or agreement, written or oral, other than those expressly contained herein. This Agreement supersedes any and all promises, warranties, representations or agreements, whether
oral or written, including the Offer Letter. This Agreement may not be amended or modified except by a written instrument signed by you and a duly authorized member of the Board. 

11. Enforceability. If any provision of this Agreement is determined to be invalid or unenforceable, in whole or in part, this
determination will not affect any other provision of this Agreement, and the Agreement, including the invalid or unenforceable provisions, shall be enforced insofar as possible to achieve the intent of the parties. 

12. Binding Nature. This Agreement will be binding upon and inure to the benefit of the personal representatives and successors
of the respective parties hereto. 
 13. Governing Law. This Agreement will be governed by and construed in accordance with the
laws of the State of California without regard to conflicts of law principles. 
 14. Miscellaneous. With respect to the
enforcement of this Agreement, no waiver of any right hereunder shall be effective unless it is in writing. For purposes of construction of this Agreement, any ambiguity shall not be construed against either party as the drafter. This Agreement may
be executed in more than one counterpart, and signatures transmitted via facsimile shall be deemed equivalent to originals. 

 

 
 August 18, 2018 
 Page Eight

  

 If these revised terms of your employment with Sonim are acceptable to you, please sign this
Agreement and return it to me. 
  

			
	Sincerely,
	Sonim Technologies, Inc.
	
	 /s/ Jim Walker

	James M. Walker
	Chief Financial Officer
	
	Understood and agreed to:
	
	 /s/ Bob Plaschke

	Robert J. Plaschke
	Chief Executive Officer
	
	9/18/2018
	Date

 EXHIBIT A: CASH BONUS PLAN 

 

	A.	 Subject to the discretion of the Board of Directors of the Company (the “Board”), you
will be eligible for an annual Bonus that will be based upon the “EBITDA” (as defined below) performance of the Company and the following guidelines: 

 

					
	 Year
	  	 Target Bonus
	  	EBITDA Target
	 2018
	  	100% of Annual Salary	  	$8,105,000
	 2019, beyond
	  	100% of Annual Salary	  	To Be Determined

 “EBITDA” is defined as: 

 

	 	•	 	 Operating Profit 

  

	 	•	 	 Add back: depreciation, amortization, interest and taxes 

 

	 	•	 	 Less: all cash disbursements due employees under the Cash Bonus Plan for the current year 

 

	B.	 The Board will determine the actual bonus to which you are entitled each year using a formula mutually agreed
upon at the beginning of each year. 

  

	C.	 The Company’s EBITDA for each year shall be approved by the Board as soon as practicable following
completion of the respective year-end audit (the date of such determination, the “Determination Date”). The Company’s EBITDA targets for 2018 and beyond will be approved by the
Board annually, which approval is expected to occur prior to January 31 each year. The Company’s EBITDA result for a year in which a Change in Control occurs shall be determined without taking into consideration any costs associated with
the Change in Control that affect the Company’s financial results for that year. 

  

	D.	 If approved, bonus payments will be made annually and in accordance with Company’s standard policies and
procedures. Payment shall be conditioned on (1) you being in the Company’s continuous service through the relevant year’s Determination Date and (2) Sonim maintaining an agreed upon minimum cash balance at the end of the fiscal
quarter immediately preceding the respective Determination Date. In the event any approved bonus amounts are not paid pursuant to the foregoing subsection (2), such amounts shall be paid to you when and if Sonim achieves the cash balance, at which
time you must be in the Company’s continuous service to earn and receive such bonus payment. 

 EXHIBIT B: PROPRIETARY INFORMATION AGREEMENT

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