SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D
(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED

PURSUANT TO § 240.13d-2(a)

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. __)*

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. ☐

Note. Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See § 240.13d-7 for other parties to whom copies are to be sent.

*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

SCHEDULE 13D

SCHEDULE 13D

SCHEDULE 13D

SCHEDULE 13D

SCHEDULE 13D

SCHEDULE 13D

SCHEDULE 13D

SCHEDULE 13D

Explanatory Note

On October 30, 2019, certain Reporting Persons acquired and disposed of Common Stock of the Issuer as further described herein. Prior to the October 30, 2019 transactions, the Reporting Persons had an obligation to file a Schedule 13G within 45 days after the end of the calendar year. This Schedule 13D (this “Schedule 13D”) is being filed by the Reporting Persons in connection with the October 30, 2019 acquisitions, which, together with all other acquisitions of Common Stock by the Reporting Persons during the preceding 12 months, exceed two percent of the outstanding Common Stock.

Item 1. Security and Issuer

The securities to which this Schedule 13D relates are the common stock, $0.001 par value per share (the “Common Stock”), of Sonim Technologies, Inc., a Delaware corporation (the “Issuer”). The address of the principal executive offices of the Issuer is 1875 South Grant Street, Suite 750, San Mateo, CA 94402.

Item 2. Identity and Background

Set forth on Schedule A annexed hereto (“Schedule A”) is the name and present principal business, occupation or employment and the name, principal business and address of any corporation or other organization in which such employment is conducted, and the citizenship of the executive officers and directors of BRF. To the best of BRF’s knowledge, except as otherwise set forth herein, none of the persons listed on Schedule A beneficially owns any securities of the Issuer or is a party to any contract, agreement, or understanding required to be disclosed herein.

During the last five years, none of the Reporting Persons nor any person listed on Schedule A have been: (i) convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors); or (ii) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

Item 3. Source and Amount of Funds or Other Considerations

All of the shares of Common Stock to which this Schedule 13D relates were purchased on behalf of the Reporting Persons using the investment capital of the respective Reporting Persons. The aggregate purchase price of the 2,212,743 shares of Common Stock was approximately $10,301,036 (excluding commissions).

The information with respect to the securities convertible into shares of Common Stock under the Convertible Note in Item 6 is incorporated by reference herein.

From time to time, the Reporting Persons may effect purchases of securities through margin accounts, and may be extended margin credit as and when required to open or carry positions in the margin accounts, subject to applicable federal margin regulations and stock exchange rules. In such instances, the positions held in the margin accounts are pledged as collateral security for the repayment of debit balances in the accounts.

Item 4. Purpose of Transaction

The Reporting Persons purchased the Common Stock they currently hold for investment purposes, and such purchases were made in the ordinary course of business of the Reporting Persons.

In pursuing such investment purposes, the Reporting Persons may further purchase, hold, vote, trade, dispose or otherwise deal in the Common Stock at times, and in such manner, as they deem advisable to benefit from, among other things, (1) changes in the market prices of the shares of Common Stock; (2) changes in the Issuer’s operations, business strategy or prospects; or (3) from the sale or merger of the Issuer. To evaluate such alternatives, the Reporting Persons intend to closely monitor the Issuer’s operations, prospects, business development, management, competitive and strategic matters, capital structure, and prevailing market conditions, as well as other economic, securities markets and investment considerations. Consistent with their investment research methods and evaluation criteria, the Reporting Persons may discuss such matters with the management or Board of Directors of the Issuer (the “Board”), other stockholders, industry analysts, existing or potential strategic partners or competitors, investment and financing professionals, sources of credit, and other investors. Such evaluations and discussions may materially affect, and result in, among other things, the Reporting Persons (1) modifying their ownership of the Common Stock; (2) exchanging information with the Issuer pursuant to appropriate confidentiality or similar agreements; (3) proposing changes in the Issuer’s operations, governance or capitalization; (4) pursuing a transaction that would result in the Reporting Persons’ acquisition of all or a controlling interest in the Issuer; or (5) pursuing one or more of the other actions described in subsections (a) through (j) of Item 4 of Schedule 13D.

In addition to the information disclosed in this Statement, the Reporting Persons reserve the right to (1) formulate other plans and proposals; (2) take any actions with respect to their investment in the Issuer, including any or all of the actions set forth in subsections (a) through (j) of Item 4 of Schedule 13D; and (3) acquire additional shares of Common Stock or dispose of some or all of the shares of Common Stock beneficially owned by them, in each case in the open market, through privately negotiated transactions or otherwise. The Reporting Persons may at any time reconsider and change their plans or proposals relating to the foregoing.

Prior to the Issuer’s initial public offering, the Reporting Persons held securities of the Issuer as previously disclosed in the Form 3 filed by the Reporting Persons with the SEC on May 9, 2019. On October 30, 2019, BRFBR purchased an aggregate of 25,500 shares of Common Stock through purchases on the open market and subsequently sold an aggregate of 25,500 shares of Common Stock on the same date, as further described in Schedule B. As previously disclosed in the Form 4 filed by the Reporting Persons with the SEC on November 1, 2019, certain of the foregoing transactions were matchable transactions under Section 16(b) of the Exchange Act of 1934, as amended, and the Reporting Persons disgorged the full amount of recoverable profits to the Issuer. The number of securities of the Issuer held by the Reporting Persons prior to the October 30, 2019 transactions has not changed on account of such transactions.

The Reporting Persons intend to engage in conversations with members of the Issuer’s management to discuss ways to enhance shareholder value. Additionally, Mr. Young serves as a member of the Board of the Issuer.

Item 5. Interest in Securities of the Issuer

(a) - (b)

Each of the Reporting Persons may be deemed a member of a “group” with the other Reporting Persons for purposes of Rule 13d-5(b)(1) of the Exchange Act, and thus, may be deemed to beneficially own the securities of the Issuer owned by the other Reporting Persons. The filing of this Schedule 13D shall not be deemed an admission that the Reporting Persons are, for purposes of Section 13(d) of the Exchange Act, the beneficial owners of any securities of the Issuer it does not directly own or control. Each of the Reporting Persons specifically disclaims beneficial ownership of the securities reported herein that it does not directly own or control. As of the date hereof, each of BRPLP, BRPGP, BRCM, BRF, and Mr. Riley may be deemed to have shared power to vote or direct the vote of, and to dispose or direct the disposition of, the Shares beneficially owned directly by BRPLP.

As of the date hereof, Mr. Riley may be deemed to have shared power to vote or direct the vote of, and to dispose or direct the disposition of, the Shares beneficially owned directly by BRF. As of the date hereof, each of BRF, Mr. Young and Mr. Riley may be deemed to have shared power to vote or direct the vote of, and to dispose or direct the disposition of, the Shares beneficially owned directly by BRPI.

(c) The Reporting Persons’ transactions within the past 60 days are set forth on Schedule B hereto. Each of the transactions listed on Schedule B was a purchase or acquisition, as specified therein, of Common Stock on the open market.

(d) Except as described herein, no other person has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the shares of Common Stock held by the Reporting Persons.

(e) Not applicable.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer

Investor Rights Agreement

On October 26, 2017, BRF and BRPLP entered into that certain 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 with the Issuer and the other investors, as described therein (the “Investor Rights Agreement”), which provides for, among other things, registration rights of the Common Stock and the right to designate a director to the Board of the Issuer, subject to certain conditions.

The foregoing description of the Investor Rights Agreement is not, and does not purport to be, complete and is qualified in its entirety by reference to the full text of the Investor Rights Agreement, which is filed as Exhibit 2 herewith and is incorporated herein by reference.

Lock-Up Agreement

In connection with the Issuer’s initial public offering, BRF and BRPLP entered into a Lock-Up Agreement (the “Lock-Up Agreement”), under which BRF and BRPLP agreed not to, directly or indirectly, offer, sell, contract to sell, pledge, grant any option to purchase, make any short sale, or otherwise dispose of or hedge any of the Common Stock, any options or warrants to purchase shares of the Common Stock, or any securities convertible into, or exchangeable for or that represent the right to receive shares of the Common Stock, without the prior written consent of Oppenheimer & Co. Inc. for a period of 180 days from the date of the Lock-Up Agreement.

Loan Agreement and Convertible Note

On October 26, 2017, BRPI entered into a Subordinated Term Loan and Security Agreement (as amended, the “Loan Agreement”) with the Issuer. Under the Loan Agreement, the Issuer can borrow principal up to $12,000,000 via a subordinated secured convertible promissory note (the “Convertible Note”), with an optional conversion feature as described below. As of June 30, 2019, the total outstanding amount under the Loan Agreement was $12,000,000 and total interest accrued was $1,109,000. The Loan Agreement, as amended, matures on September 1, 2022 (the “Maturity Date”) and carries a stated interest rate of 10% and provided that the first year of interest be compounded into the principal on October 26, 2018, with interest-only payments beginning thereafter.

As amended, the Convertible Note provides that at any time, on or prior to the Maturity Date, BRPI may elect to convert principal amounts outstanding, including accrued interest, as limited below, into shares of Common Stock at $8.87 per share. The number of shares of Common Stock to be issued upon conversion is limited to the sum of (A) the lesser of (i) the principal outstanding and (ii) the aggregate principal amount borrowed under the Loan Agreement to date multiplied by the Designated Percentage as defined below, and (B) accrued interest. The “Designated Percentage” is one hundred percent (100%) if the conversion date is prior to the first anniversary of the effective date, seventy-five percent (75%) in Year 2 of the Loan Agreement, fifty percent (50%) in Year 3, twenty-five percent (25%) in Year 4, and twelve and a half of percent (12.5%) in the final year of the Loan Agreement on or prior to the Maturity Date. As of the date hereof, 732,852.46 shares are issuable upon conversion of the Convertible Note.

Subordination Agreement and Side Letter

On October 26, 2017, BRPI and East West Bank (the “Senior Lender”) entered into a Subordination Agreement, in which BRPI agreed that all junior debt, as described therein (which includes the Convertible Note), is subordinated to borrowings under the a loan and security agreement (the “Senior Debt”) with the Senior Lender. Pursuant to the Subordination Agreement, BRPI has the right to purchase from Senior Lender all of Senior Lender’s right, title, and interest in and to the Senior Debt at any time after (i) acceleration of the Senior Debt which is not rescinded; (ii) the commencement of an Enforcement Action by Senior Lender which is not rescinded, (iii) the passage of a period of 45 days during the continuance of a Senior Debt default, or (iv), commencement of any insolvency proceedings against the Issuer. Under a side letter dated October 26, 2017 (“Side Letter”), with another major investor, BRPI agreed that if it purchases or has the right to purchase the senior loan pursuant to the Side Letter, BRPI will offer to certain other preferred stockholders the right to purchase undivided pro rata participation interests, in up to 50% of each of the Senior Debt and junior debt. The major investor and the other preferred shareholders referenced in the Side Letter all sold portions of their Series A holdings to BRPI affiliates and other purchasers in October 2017.

The foregoing description of the Side Letter is not, and does not purport to be, complete and is qualified in its entirety by reference to the full text of the Side Letter, which is filed as Exhibit 3 herewith and is incorporated herein by reference.

Item 7. Material to Be Filed as Exhibits

The following documents are filed as exhibits:

Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Date: November 11, 2019

The original statement shall be signed by each person on whose behalf the statement is filed or his authorized representative. If the statement is signed on behalf of a person by his authorized representative (other than an executive officer or general partner of this filing person), evidence of the representative’s authority to sign on behalf of such person shall be filed with the statement, provided, however, that a power of attorney for this purpose which is already on file with the Commission may be incorporated by reference. The name and any title of each person who signs the statement shall be typed or printed beneath his signature.

Attention: Intentional misstatements or omissions of fact constitute Federal criminal violations (see 18 U.S.C. 1001).

EXHIBIT 1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including additional amendments thereto) with respect to the common stock, $0.001 par value per share, of Sonim Technologies, Inc., a Delaware corporation. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.

Dated: November 11, 2019

SCHEDULE A

Executive Officers and Directors of B. Riley Financial, Inc.

SCHEDULE B

Transactions within the Past 60 Days

EXHIBIT 3

B. Riley Principal Investments, LLC

21255 Burbank Boulevard, Suite 400

Woodland Hills, CA 91367

October 23, 2017

Investec Investments (UK) Limited

2 Gresham Street

London EC2V 7QP, England

Attention of Maurice Hochschild

Dear Sirs:

Reference is made to the Amended and Restated Loan and Security Agreement between East West Bank (“Senior Lender”) and Sonim Technologies, Inc. (“Borrower”), dated as of January 22, 2016 (as amended and restated from time to time, the “Senior Loan Agreement”), and to the Subordinated Term Loan and Security Agreement between Borrower and B. Riley Principal Investments, LLC (“BRPI”), dated as of the date hereof (as amended and restated from time to time, the “Junior Loan Agreement”).

Senior Lender and BRPI are party to a Subordination Agreement dated as of the date hereof (as amended and restated from time to time, the “Subordination Agreement”). Capitalized terms used herein which are not otherwise defined herein are given the meaning set forth in, or by reference in, the Subordination Agreement.

Pursuant to the Subordination Agreement, BRPI has the right to purchase (the “Purchase Right”) from Senior Lender all (but not less than all) of Senior Lender’s right, title, and interest in and to the Senior Debt at any time after: (i) acceleration of the Senior Debt which is not rescinded; (ii) the commencement of an Enforcement Action by Senior Lender which is not rescinded, (iii) the passage of a period of forty-five (45) days during the continuance of a Senior Default (which would permit acceleration) without forbearance by Senior Lender (provided that during such forty-five (45) day period, Senior Lender agrees not to charge default interest so long as each regularly scheduled interest payment on the Senior Debt is made (with interest on any late interest at the contract rate) within five (5) Business Days after the date such regularly scheduled interest payment is due, and provided further that if Senior Lender does not so agree to refrain from charging default interest, BRPI may exercise such purchase right on the date of such Senior Default); or (iv) the commencement of any insolvency, reorganization or any case or proceeding involving Borrower or any of its subsidiaries under any bankruptcy or insolvency law or laws relating to the relief of debtors (each event described in clauses (iii) and (iv), but only so long as in the case of clause (iv), no plan of reorganization, stalking horse bid or lift stay motion has been proposed in such proceeding, being a “Non-Emergency Purchase Right Trigger”).

BRPI agrees that it may not exercise the Purchase Right based on a Non-Emergency Purchase Right Trigger without the prior written consent of Investec Investments (UK) Limited (“Investec”), and that Investec shall be entitled to equitable relief as a remedy for any breach or threatened breach of this approval requirement, that Investec shall not be required to post any bond or similar instrument in connection with or as a condition to obtaining such a remedy, and that it will not assert as a defense to any action for equitable relief that a damages remedy would be adequate.

If BRPI has purchased, or shall have the right to purchase, the Senior Loan as aforesaid during the period from the date of this Agreement until the Response Period Termination Date (as defined below), BRPI agrees that it shall offer to Investec, Waveland Capital Partners LLC and Verdoso Investments S. A. (collectively, the “Offerees”), the right (which may, in the discretion of each Offeree, be exercised by one or more affiliate nominees) to purchase undivided pro rata participation interests (the “Participation Interests”), in up to 50% (or such higher percentage as BRPI shall determine in its sole discretion) of each of the Senior Debt and the Junior Debt (the “Participating Debt”) pursuant to the form of participation agreement attached hereto as Exhibit A (each, a “Participation Agreement”).

BRPI agrees to notify Investec and the other Offerees promptly after BRPI becomes aware that the Purchase Right is exercisable, stating the then amount of the Participating Debt known to it and the percentage (not less than 50%) of the Participating Debt offered to the Offerees (the “Participation Offer”) and specifying a response date which shall be at least thirty (30) days from the date of the Participation Offer but which may be extended by BRPI by notice to all Offerees (the “Response Date”) for acceptance of the Participation Offer; such offering period, plus the five Business Day additional response period, if applicable, provided in the third following paragraph, being the “Response Period”). The Offerees shall thereupon have the right, but not the obligation, to purchase such Participation Interests at par (or, if for any reason, BRPI purchases the Senior Debt from Senior Lender for less than par, at such price for the Senior Debt portion of the Participating Debt, and at par for the Junior Debt portion) for payment in immediately available funds as provided herein. During the Response Period and if one more Offerees elect to purchase Participating Interests, during the period commencing on the expiration of the Response Period and ending on the Purchase Date, BRPI will not initiate or pursue any Enforcement Action or continue any Enforcement Action that Senior Lender initiated prior to BRPI’s purchase of the Senior Debt, except with the prior written consent of Investec or as provided in the proviso to Section 3(a) of the Subordination Agreement.

An Offeree electing to purchase a Participation Interest shall provide a written notice to BRPI (a “Committed Participation Notice”) prior to the Response Date specifying the percentage Participation Interest which such Offeree wishes to purchase. Upon delivering a Committed Participation Notice to BRPI, the Offeree shall be irrevocably committed to acquire from BRPI, and BRPI shall be irrevocably committed to sell to such Offeree or its affiliate nominee, a Participation Interest up to the percentage subscribed for by such Offeree on the fifth Business Day following the Response Date (the “Purchase Date”).

If Offerees subscribe for more than the total percentage of Participation Interests offered, such offers shall be pro-rated to each Offeree based on its subscribed percentage proportionate to the subscribed percentages of all Offerees.

If Offerees do not subscribe by the Response Date for the total percentage of Participation Interests offered by BRPI hereunder, then BRPI shall thereupon promptly notify each Offeree who exercised its Participation Interest purchase right. Such Offerees shall have the option, during the five (5) Business Day period commencing on the date of such notice from BRPI (the fifth Business Day after such notice being the “Response Period Termination Date”), to elect by additional Committed Participation Notices to purchase all or any part of the unsubscribed balance of the total percentage Participation Interests offered by BRPI hereunder.

The purchase price for each Participation Interest (each a “Purchase Price”) shall be notified by BRPI to each Offeree one Business Day prior to the Purchase Date (and shall include interest calculated to accrue through the Purchase Date). On the Purchase Date, each Offeree shall make payment to BRPI in immediately available funds by federal funds wire transfer of its Purchase Price and shall execute and deliver the Participation Agreement with BRPI substantially in the form of Exhibit A hereto. Upon making such payment and execution of the Participation Agreement, an Offeree shall be a “Participant”.

BRPI shall retain undivided Participation Interests in the portion of the Participating Debt not purchased by the Offerees for its own account (“the “Retained Interest”) and may sell such Participation Interests from the Retained Interest as permitted by the Participation Agreement.

In exercising the Purchase Right, BRPI is obligated (i) to reimburse Senior Lender for any loss or cost damage incurred by Senior Lender as a result of any checks or other payments provisionally credited to the Senior Debt, and/or as to which Senior Lender has not yet received final payment, but only to the extent that a claim is made by Senior Lender to BRPI in writing (together with supporting documentation of such loss, cost or damage reasonably acceptable to BRPI) within thirty (30) days after the sale of the Senior Debt to BRPI and (ii) to the extent included in such transfer, to provide cash collateral to Senior Lender in such amounts as is reasonably necessary to fully cash secure any outstanding ancillary services (such as letters of credit, ACH transactions, f/x transactions, and credit cards) under the documents evidencing the Senior Debt. Pursuant to its Participation Interest, each Purchasing Offeree shall be liable for its pro rata share of such reimbursements and cash collateral to the extent not included in the Purchase Prices.

BRPI agrees not to delete, surrender or amend the Purchase Right in any matter which would disable BRPI from being able to offer the Participation Interests to the Offerees as provided herein.

This Letter Agreement shall be governed by the laws of the State of California without regard to its choice of law provisions and may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one instrument. No provision of this Letter Agreement may be amended or waived without the written consent of BRPI and Investec.

Please confirm your agreement to the forgoing by executing a counterpart of this Letter Agreement and returning it to me.

ACCEPTED AND AGREED AS OF

THE DATE FIRST ABOVE WRITTEN:

INVESTEC INVESTMENTS (UK) LIMITED

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