Cyngn (CYN) investor details passive 0.97% ownership position

Rhea-AI Filing Summary

Cyngn Inc. (CYN) received an amended Schedule 13G (Amendment No. 2) reporting that Sabby Volatility Warrant Master Fund, Ltd., Sabby Management, LLC, and Hal Mintz together beneficially own 77,680 shares of Cyngn common stock. This represents about 0.97% of the company’s outstanding common shares as of the reporting date.

All three reporting persons disclose shared voting and dispositive power over these 77,680 shares and no sole power. They also certify that the securities were not acquired for the purpose of changing or influencing control of Cyngn, indicating a passive investment below the 5% ownership threshold.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 2)

Cyngn Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

23257B305

(CUSIP Number)

12/31/2025

(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. 23257B305

1

Names of Reporting Persons

SABBY MANAGEMENT, LLC

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 77,680.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 77,680.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

77,680.00

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)

1.0 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

CUSIP No. 23257B305

1

Names of Reporting Persons

SABBY VOLATILITY WARRANT MASTER FUND LTD

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

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 77,680.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 77,680.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

77,680.00

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)

1.0 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

CUSIP No. 23257B305

1

Names of Reporting Persons

HAL MINTZ

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

FLORIDA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 77,680.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 77,680.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

77,680.00

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)

1.0 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Cyngn Inc.
(b)	Address of issuer's principal executive offices: 1344 TERRA BELLA AVENUE, MOUNTAIN VIEW, CALIFORNIA, 94043
Item 2.
(a)	Name of person filing: Sabby Volatility Warrant Master Fund, Ltd. Sabby Management, LLC Hal Mintz
(b)	Address or principal business office or, if none, residence: Sabby Volatility Warrant Master Fund, Ltd. c/o Captiva (Cayman) Ltd Governors Square, Bldg 4, 2nd Floor 23 Lime Tree Bay Avenue P.O. Box 32315 Grand Cayman KY1-1209 Cayman Islands Sabby Management, LLC 1011 Links Dr. Miami Beach, FL 33109 Hal Mintz c/o Sabby Management, LLC 1011 Links Dr. Miami Beach, FL 33109
(c)	Citizenship: Sabby Volatility Warrant Master Fund, Ltd. - Cayman Islands Sabby Management, LLC - Delaware, USA Hal Mintz - USA
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 23257B305
Item 4.	Ownership
(a)	Amount beneficially owned: Sabby Volatility Warrant Master Fund, Ltd. - 77,680 Sabby Management, LLC - 77,680 Hal Mintz - 77,680
(b)	Percent of class: Sabby Volatility Warrant Master Fund, Ltd. - 0.97% Sabby Management, LLC - 0.97% Hal Mintz - 0.97%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 77680
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 77680 As calculated in accordance with Rule 13d-3 of the Securities Exchange Act of 1934, as amended, (i) Sabby Volatility Warrant Master Fund, Ltd. beneficially owns 77,680 shares of the Issuer's common stock (Common Stock), representing approximately 0.97% of the Common Stock, and (ii) Sabby Management, LLC and Hal Mintz each beneficially own 77,680 shares of the Common Stock, representing approximately 0.97% of the Common Stock. Sabby Management, LLC and Hal Mintz do not directly own any shares of Common Stock, but each indirectly owns 77,680 shares of Common Stock. Sabby Management, LLC, a Delaware limited liability company, indirectly owns 77,680 shares of Common Stock because it serves as the investment manager of Sabby Volatility Warrant Master Fund, Ltd. Mr. Mintz indirectly owns 77,680 shares of Common Stock in his capacity as manager of Sabby Management, LLC.
Item 5.	Ownership of 5 Percent or Less of a Class.
	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.

SABBY MANAGEMENT, LLC

Signature:	/s/ Robert Grundstein
Name/Title:	Chief Operating Officer
Date:	01/07/2026

SABBY VOLATILITY WARRANT MASTER FUND LTD

Signature:	/s/ Harry Thompson
Name/Title:	Authorized Person of TDF Management Ltd., a Director
Date:	01/07/2026

HAL MINTZ

Signature:	/s/ Hal Mintz
Name/Title:	Hal Mintz
Date:	01/07/2026

FAQ

What percentage of Cyngn (CYN) does Sabby report owning?

The filing states that Sabby Volatility Warrant Master Fund, Ltd., Sabby Management, LLC, and Hal Mintz each beneficially own 77,680 shares of Cyngn common stock, representing approximately 0.97% of the outstanding common stock.

How many Cyngn shares are beneficially owned by the Sabby entities and Hal Mintz?

According to the Schedule 13G/A, Sabby Volatility Warrant Master Fund, Ltd., Sabby Management, LLC, and Hal Mintz each report beneficial ownership of 77,680 shares of Cyngn common stock.

Is the Sabby position in Cyngn reported as passive or controlling?

The certification states the securities were not acquired and are not held for the purpose of changing or influencing control of Cyngn, indicating a passive position.

Who are the reporting persons in this Cyngn Schedule 13G/A filing?

The reporting persons are Sabby Volatility Warrant Master Fund, Ltd., Sabby Management, LLC, and Hal Mintz, each reporting the same 77,680 shares and 0.97% ownership of Cyngn common stock.

Do the reporting persons have sole or shared voting power over Cyngn shares?

Each reporting person indicates 0 shares with sole voting or dispositive power and 77,680 shares with shared voting and shared dispositive power.

Why does the filing mention ownership of 5 percent or less of a class?

Item 5 is marked to indicate ownership of 5 percent or less of Cyngn’s common stock, consistent with the reported 0.97% beneficial ownership.