RADCOM holder Lynrock Lake reports 16.4% stake

An investment fund managed by Lynrock Lake reports beneficial ownership of 16.4% of RADCOM LTD’s ordinary shares.

Rhea-AI Filing Summary

RADCOM LTD (RDCM) received an updated Schedule 13D/A from investment entities associated with Lynrock Lake, disclosing a significant ownership position in its Ordinary Shares. Lynrock Lake Master Fund LP directly holds 2,749,417 Ordinary Shares, with Lynrock Lake Partners LLC as investment manager and Cynthia Paul as Chief Investment Officer and control person.

This stake represents 16.4% of RADCOM’s Ordinary Shares, based on 16,738,377 shares outstanding as of April 8, 2026, as reported in a prior Form 6-K. The aggregate purchase price of the reported shares is approximately $29,456,569, funded from the fund’s working capital, which can include margin loans. Amendment No. 4 updates the ownership disclosure and adds an exhibit listing recent open-market transactions in RADCOM shares.

Key Figures

Beneficial ownership: 2,749,417 Ordinary Shares Ownership percentage: 16.4% Shares outstanding: 16,738,377 Ordinary Shares +3 more

6 metrics

Beneficial ownership 2,749,417 Ordinary Shares Shares of RADCOM LTD beneficially owned by the reporting persons

Ownership percentage 16.4% Portion of RADCOM’s Ordinary Shares represented by 2,749,417 shares

Shares outstanding 16,738,377 Ordinary Shares RADCOM shares outstanding as of April 8, 2026, per Form 6-K

Aggregate purchase price $29,456,569 Total cost, including commissions, for 2,749,417 RADCOM Ordinary Shares

Par value NIS 0.20 per share Par value of RADCOM’s Ordinary Shares

Sole voting power 2,749,417 shares Shares over which each reporting person reports sole voting power

Key Terms

beneficially owned, Sole Voting Power, Sole Dispositive Power, investment manager, +2 more

6 terms

beneficially owned financial

"set forth the aggregate number of Ordinary Shares and percentages of the Ordinary Shares beneficially owned"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole Voting Power financial

"Number of Shares Beneficially Owned by Each Reporting Person With: | 7 | Sole Voting Power"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

Sole Dispositive Power financial

"Number of Shares Beneficially Owned by Each Reporting Person With: | 9 | Sole Dispositive Power"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

investment manager financial

"The Investment Manager is the investment manager of Lynrock Fund"

margin loans financial

"may, at any given time, include margin loans made by brokerage firms"

Margin loans are loans from a brokerage that let an investor borrow money using their existing stocks, bonds or cash as collateral to buy more securities. They matter because borrowing magnifies both gains and losses—like using a lever to move a heavier load—so small market moves can have outsized effects on your returns; investors also pay interest and risk a margin call, where the broker may force sales if collateral falls below required levels.

open market financial

"All of such transactions were effected in the open market unless otherwise noted"

An open market is a system where buying and selling of goods, services, or financial assets happen freely without restrictions or special controls. For investors, it means they can trade assets easily and quickly, which helps determine fair prices based on supply and demand. This environment encourages transparency and competition, making it easier to buy or sell with confidence.

FAQ

How many RADCOM (RDCM) shares do the Lynrock Lake reporting persons beneficially own?

The reporting persons beneficially own 2,749,417 RADCOM Ordinary Shares, all held directly by Lynrock Lake Master Fund LP. This position is reported as of the event date of September 1, 2026 in Amendment No. 4 to their Schedule 13D.

What percentage of RADCOM (RDCM) does Lynrock Lake’s position represent?

The filing states that 2,749,417 Ordinary Shares represent 16.4% of RADCOM’s Ordinary Shares. This percentage is calculated based on 16,738,377 Ordinary Shares outstanding as of April 8, 2026, as reported in RADCOM’s Form 6-K.

What is the aggregate purchase price of Lynrock Lake’s RADCOM (RDCM) shares?

The aggregate purchase price of the 2,749,417 Ordinary Shares is approximately $29,456,569, including brokerage commissions. The capital came from the fund’s working capital, which may include margin loans from brokerage firms.

Who holds voting and investment power over the RADCOM (RDCM) shares reported by Lynrock Lake?

Lynrock Lake Partners LLC, as investment manager to Lynrock Lake Master Fund LP, has been delegated full voting and investment power over the reported RADCOM shares. Cynthia Paul, as Chief Investment Officer and sole member of the general partner, may be deemed to share that authority.

What changes does Amendment No. 4 report regarding Lynrock Lake’s RADCOM (RDCM) stake?

Amendment No. 4 updates Item 3 and Item 5 to restate the source of funds, confirm beneficial ownership of 2,749,417 shares (16.4%), and adds an exhibit listing transactions in RADCOM securities by the reporting persons since Amendment No. 3.

How were Lynrock Lake’s RADCOM (RDCM) share purchases funded?

The filing states that purchases were funded from Lynrock Fund’s working capital, consisting of partner contributions and which may, at times, include margin loans from brokerage firms obtained in the ordinary course of business.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/09/2026 - 07:40 PM Accepted by SEC EDGAR 09/09/2026 - 07:40 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 4)

RADCOM LTD

(Name of Issuer)

Ordinary Shares, NIS 0.20 par value per share

(Title of Class of Securities)

M81865111

(CUSIP Number)

Cynthia Paul
Lynrock Lake LP, 2 International Drive, Suite 130
Rye Brook, NY, 10573
914-449-4660

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

09/01/2026

(Date of Event Which Requires Filing of This Statement)

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.

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).

schemaVersion:

SCHEDULE 13D

CUSIP Number(s): M81865111

1

Name of reporting person

Lynrock Lake LP

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 2,749,417.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 2,749,417.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

2,749,417.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

16.4 %

14

Type of Reporting Person (See Instructions)

IA, PN

SCHEDULE 13D

CUSIP Number(s): M81865111

1

Name of reporting person

LYNROCK LAKE PARTNERS LLC

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 2,749,417.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 2,749,417.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

2,749,417.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

16.4 %

14

Type of Reporting Person (See Instructions)

HC, OO

SCHEDULE 13D

CUSIP Number(s): M81865111

1

Name of reporting person

Paul Cynthia

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 2,749,417.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 2,749,417.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

2,749,417.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

16.4 %

14

Type of Reporting Person (See Instructions)

IN, HC

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Ordinary Shares, NIS 0.20 par value per share
(b)	Name of Issuer: RADCOM LTD
(c)	Address of Issuer's Principal Executive Offices: 24 RAOUL WALLENBERG, TEL AVIV, ISRAEL , 6971920.
Item 1 Comment: The following constitutes Amendment No. 4 ("Amendment No. 4") to the Schedule 13D filed by the undersigned with the Securities and Exchange Commission (the "SEC") on February 24, 2026 and amended on April 28, 2026, May 11, 2026 and July 27, 2026 (as amended, the "Schedule 13D"). This Amendment No. 4 amends and supplements the Schedule 13D as set forth below. Capitalized terms used herein and not otherwise defined in this Amendment No. 4 have the meanings set forth in the Schedule 13D.
Item 3.	Source and Amount of Funds or Other Consideration
	Item 3 is hereby amended and restated to read as follows: The source of the capital to purchase securities of the Issuer reported herein was Lynrock Fund's (as defined below) working capital, consisting of contributions from its general and limited partners (and which may, at any given time, include margin loans made by brokerage firms in the ordinary course of business). The aggregate purchase price of the 2,749,417 Ordinary Shares reported herein is approximately $29,456,569, including brokerage commissions.
Item 5.	Interest in Securities of the Issuer
(a)	Item 5(a) is hereby amended and restated to read as follows: Rows 11 and 13 of each Reporting Person's cover page to this Schedule 13D set forth the aggregate number of Ordinary Shares and percentages of the Ordinary Shares beneficially owned by such Reporting Person and are incorporated by reference. The percentage set forth in each row 13 is based upon 16,738,377 Ordinary Shares outstanding as of April 8, 2026, as reported in Exhibit 99.1 to the Issuer's Form 6-K filed with the Securities and Exchange Commission on April 15, 2026. The Reporting Persons' ownership of the Issuer's securities consists of 2,749,417 Ordinary Shares held directly by Lynrock Lake Master Fund LP ("Lynrock Fund"). The Investment Manager is the investment manager of Lynrock Fund, and pursuant to an investment management agreement, the Investment Manager has been delegated full voting and investment power over securities of the Issuer held by Lynrock Fund. Ms. Paul, the Chief Investment Officer of the Investment Manager and Sole Member of the General Partner, the general partner of the Investment Manager, may be deemed to exercise voting and investment power over securities of the Issuer held by Lynrock Fund.
(c)	Item 5(c) is hereby amended and restated to read as follows: The transactions in the securities of the Issuer by the Reporting Persons since the filing of Amendment No. 3 to the Schedule 13D are set forth in Exhibit 1 and are incorporated herein by reference. All of such transactions were effected in the open market unless otherwise noted therein.
Item 7.	Material to be Filed as Exhibits.
	Item 7 is hereby amended to add the following exhibit: 1 - Transactions in Securities.

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.

Lynrock Lake LP

Signature:	/s/ Cynthia Paul
Name/Title:	Cynthia Paul, Sole Member of Lynrock Lake Partners LLC, its General Partner
Date:	09/09/2026

LYNROCK LAKE PARTNERS LLC

Signature:	/s/ Cynthia Paul
Name/Title:	Cynthia Paul, Sole Member
Date:	09/09/2026

Paul Cynthia

Signature:	/s/ Cynthia Paul
Name/Title:	Cynthia Paul
Date:	09/09/2026