Siebert insider Gebbia reports 17.1M-share stake

Form 4 for SIEB details David Gebbia’s direct, family, and control-group share holdings, including a 10,000-share gift by the family control group.

Rhea-AI Filing Summary

SIEBERT FINANCIAL CORP (SIEB) reported the share holdings of David Gebbia as of September 2, 2026. He holds 1,415,318 shares of common stock directly and has indirect beneficial ownership tied to family members and a family control group.

Family members own an additional 374,000 shares attributed to his indirect beneficial ownership, which he disclaims except for any pecuniary interest. He is also part of a family control group that holds 17,050,603 shares in total; members of this group recently gifted 10,000 shares to an individual outside the group, reducing the control group’s holdings by that amount.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Gebbia David

Role Insider

Type	Security	Shares	Price	Value
holding	Common Stock, $0.01 par value per share F1	--	--	--
holding	Common Stock, $0.01 par value per share F2	--	--	--
holding	Common Stock, $0.01 par value per share F3	--	--	--

Holdings After Transaction: Common Stock, $0.01 par value per share — 1,415,318 shares (Direct); Common Stock, $0.01 par value per share — 374,000 shares (Indirect, See Footnote); Common Stock, $0.01 par value per share — 17,050,603 shares (Indirect, Control Group)

Footnotes (3)

1. F1. The Reporting Person owns 1,415,318 shares of Issuer common stock.
2. F2. The Reporting Person's various family members own 374,000 shares of Issuer common stock. These shares are included in the Reporting Person's indirect beneficial ownership holdings. The Reporting Person disclaims beneficial ownership of such shares of Issuer common stock, except to the extent of the Reporting Person's pecuniary interest therein.
3. F3. The Reporting Person is part of a control group consisting of family members of the Reporting Person. Members of the control group gifted 10,000 shares of Issuer common stock to an individual not included within the control group, resulting in a net decrease of 10,000 shares of Issuer common stock to the control group. The Reporting Person disclaims beneficial ownership of such shares of Issuer common stock, except to the extent of the Reporting Person's pecuniary interest therein.

Key Figures

Directly owned common shares: 1,415,318 shares Family-held indirect shares: 374,000 shares Control group holdings: 17,050,603 shares +1 more

4 metrics

Directly owned common shares 1,415,318 shares Shares of Siebert Financial Corp common stock owned directly by David Gebbia as of September 2, 2026

Family-held indirect shares 374,000 shares Shares owned by various family members, counted as David Gebbia’s indirect beneficial ownership with a disclaimer

Control group holdings 17,050,603 shares Total Siebert Financial Corp common shares held by the family control group including David Gebbia

Gift by control group 10,000 shares Shares of Siebert Financial Corp common stock gifted by control group members to an individual outside the group

Key Terms

indirect beneficial ownership, pecuniary interest, control group, 10% owner group

4 terms

indirect beneficial ownership financial

"These shares are included in the Reporting Person's indirect beneficial ownership holdings."

pecuniary interest financial

"except to the extent of the Reporting Person's pecuniary interest therein."

control group financial

"The Reporting Person is part of a control group consisting of family members"

A control group is a set of study subjects that does not receive the treatment or change being tested, providing a baseline to show what happens without the intervention. For investors, control groups matter because they help determine whether reported benefits are real or just coincidence or outside influences—think of testing a new recipe by comparing it against the original to see if the change truly improves the result.

10% owner group financial

"Member of 10% owner group"

FAQ

What does the latest Form 4 for SIEB report about David Gebbia?

It reports that David Gebbia directly owns 1,415,318 shares of Siebert Financial Corp common stock and has additional indirect beneficial ownership interests through family members and a family control group.

How many SIEB shares does David Gebbia own directly?

David Gebbia owns 1,415,318 shares of Siebert Financial Corp common stock directly, as reported for September 2, 2026.

What indirect SIEB holdings are attributed to David Gebbia’s family members?

Various family members of David Gebbia own 374,000 shares of Siebert Financial Corp common stock. These are included in his indirect beneficial ownership, though he disclaims beneficial ownership except to the extent of his pecuniary interest.

How many SIEB shares are held by the family control group?

A family control group that includes David Gebbia holds 17,050,603 shares of Siebert Financial Corp common stock in total, after the reported gift transaction.

What gift of SIEB shares did the family control group make?

Members of the family control group gifted 10,000 shares of Siebert Financial Corp common stock to an individual outside the group, resulting in a net decrease of 10,000 shares in the control group’s holdings.

Does David Gebbia fully beneficially own his family members’ SIEB shares?

No. While 374,000 shares held by family members are included in his indirect beneficial ownership, he disclaims beneficial ownership of those shares except to the extent of his pecuniary interest.

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Available on EDGAR 09/04/2026 - 04:31 PM Accepted by SEC EDGAR 09/04/2026 - 04:30 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Gebbia David

(Last) (First) (Middle)

C/O SIEBERT FINANCIAL CORP.

653 COLLINS AVENUE

(Street)

MIAMI BEACH FLORIDA 33139

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SIEBERT FINANCIAL CORP [ SIEB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Member of 10% owner group

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/02/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, $0.01 par value per share								1,415,318	D(1)
Common Stock, $0.01 par value per share								374,000	I	See Footnote(2)
Common Stock, $0.01 par value per share								17,050,603	I	Control Group(3)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The Reporting Person owns 1,415,318 shares of Issuer common stock.

2. The Reporting Person's various family members own 374,000 shares of Issuer common stock. These shares are included in the Reporting Person's indirect beneficial ownership holdings. The Reporting Person disclaims beneficial ownership of such shares of Issuer common stock, except to the extent of the Reporting Person's pecuniary interest therein.

3. The Reporting Person is part of a control group consisting of family members of the Reporting Person. Members of the control group gifted 10,000 shares of Issuer common stock to an individual not included within the control group, resulting in a net decrease of 10,000 shares of Issuer common stock to the control group. The Reporting Person disclaims beneficial ownership of such shares of Issuer common stock, except to the extent of the Reporting Person's pecuniary interest therein.

	/s/ David Gebbia	09/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)