[SCHEDULE 13G/A] Sonim Technologies, Inc. SEC Filing

Rhea-AI Filing Summary

Sonim Technologies (NASDAQ: SONM) received an amended Schedule 13G filing (Amendment No. 4) dated 7 July 2025 from individual investor Laurence W. Lytton and the Lytton-Kambara Foundation. Lytton reports beneficial ownership of 987,465 common shares, equal to 5.6 % of the company’s 17,738,905 shares outstanding. The Foundation owns 800,000 shares (4.5 %), with voting and dispositive power shared between the two reporting persons.

The filing is made under Rule 13d-1(c) for passive investors and includes the standard certification that the securities were not acquired with the purpose or effect of changing or influencing control of the issuer. The totals exclude warrants for 400,000 additional shares that cannot be exercised beyond a 4.99 % beneficial-ownership cap. Were those warrants to become exercisable without breaching the cap, combined ownership could rise to roughly 7.9 % of outstanding shares.

No new transactions, strategic actions, or board-related intentions are disclosed. The primary takeaway for investors is the emergence of a single passive holder just above the 5 % threshold, which can modestly improve the public float’s stability but does not, by itself, signal a change in corporate direction.

Positive

• New 5.6 % passive stake by Laurence W. Lytton signals external investor confidence in SONM.
• Additional 400 k share warrants could lift combined ownership to ~7.9 % if exercised, suggesting potential for deeper commitment.

Negative

• None.

Insights

Financial Analyst

TL;DR — Passive investor crosses 5 % stake; neutral operational impact.

Lytton’s 5.6 % position is noteworthy because it moves him into reportable territory, indicating confidence in SONM’s valuation at current levels. However, the filing is passive (Schedule 13G rather than 13D), offers no activism cues, and excludes 400 k share warrants limited by a 4.99 % cap. The lack of accompanying purchase dates or cost basis data makes it impossible to gauge price momentum or entry timing. Overall, the disclosure is informational, suggesting a stable, long-term shareholder rather than a catalyst for near-term operational change.

Corporate Governance Specialist

TL;DR — New 5.6 % holder, but no intent to influence control.

Because the certification expressly disavows any control intent, governance risk remains unchanged. Shared voting power over 800 k shares between Lytton and the Foundation implies coordinated but still passive ownership. The absence of group formation language and reliance on 13G status lowers the probability of proxy contests or board nominations. For governance-sensitive investors, this is a low-impact event that merely updates ownership transparency.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 4)

SONIM TECHNOLOGIES INC

(Name of Issuer)

Common Stock

(Title of Class of Securities)

83548F309

(CUSIP Number)

07/07/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 83548F309

1

Names of Reporting Persons

LYTTON LAURENCE W

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 187,465.00
6	Shared Voting Power 800,000.00
7	Sole Dispositive Power 187,465.00
8	Shared Dispositive Power 800,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

987,465.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.6 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: The shares of Common Stock beneficially owned by the reporting person excludes warrants to purchase 400,000 shares of Common Stock, which are subject to a 4.99% beneficial ownership limitation. The percentage reported herein is calculated based on 17,738,905 shares of Common Stock outstanding on July 7, 2025, as reported in the Form S-3 filed by the Issuer on July 9, 2025.

SCHEDULE 13G

CUSIP No. 83548F309

1

Names of Reporting Persons

Lytton-Kambara Foundation

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 800,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 800,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

800,000.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.5 %

12

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person: The shares of Common Stock beneficially owned by the reporting person excludes warrants to purchase 400,000 shares of Common Stock, which are subject to a 4.99% beneficial ownership limitation. The percentage reported herein is calculated based on 17,738,905 shares of Common Stock outstanding on July 7, 2025, as reported in the Form S-3 filed by the Issuer on July 9, 2025.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: SONIM TECHNOLOGIES INC
(b)	Address of issuer's principal executive offices: 4445 Eastgate Mall, Suite 200, San Diego, CA 92121
Item 2.
(a)	Name of person filing: Laurence W. Lytton and Lytton-Kambara Foundation ("Foundation").
(b)	Address or principal business office or, if none, residence: 467 CENTRAL PARK WEST, NEW YORK, NY 10025
(c)	Citizenship: United States
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 83548F309
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: Lytton: 987,465 Foundation: 800,000
(b)	Percent of class: Lytton: 5.6% Foundation: 4.5%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Lytton: 187,465 Foundation: 0
	(ii) Shared power to vote or to direct the vote: Lytton: 800,000 Foundation: 800,000
	(iii) Sole power to dispose or to direct the disposition of: Lytton: 107,696 Foundation: 0
	(iv) Shared power to dispose or to direct the disposition of: Lytton: 800,000 Foundation: 800,000
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

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.

LYTTON LAURENCE W

Signature:	/s/ Laurence W. Lytton
Name/Title:	Reporting Person
Date:	07/09/2025

Lytton-Kambara Foundation

Signature:	/s/ Laurence W. Lytton
Name/Title:	President
Date:	07/09/2025

FAQ

Who filed the Schedule 13G/A for SONM on July 7 2025?

Individual investor Laurence W. Lytton and the Lytton-Kambara Foundation filed the amendment.

How many Sonim Technologies shares does Laurence W. Lytton own?

Lytton reports 987,465 common shares, representing 5.6 % of shares outstanding.

What percentage of SONM does the Lytton-Kambara Foundation hold?

The Foundation holds 800,000 shares, equal to 4.5 % of Sonim’s common stock.

Are the reporting persons seeking control of Sonim Technologies?

No. The certification states the securities were not acquired to influence control of the issuer.

Does the filing include warrants?

Yes. It references warrants for 400,000 shares, but they are excluded due to a 4.99 % ownership cap.

What is the CUSIP number for Sonim Technologies common stock?

The CUSIP number is 83548F309.