[Form 4] Datavault AI Inc. Insider Trading Activity

Rhea-AI Filing Summary

Datavault AI Inc. insider Form 4 shows Nathaniel Bradley and EOS Technology Holdings Inc. jointly reporting changes in beneficial ownership. On 09/23/2025 a transaction coded J transferred 180,000 shares of common stock by EOS to a third party pursuant to a side letter tied to a consulting agreement; the reported price is $0. The filing lists 12,109,002 shares beneficially owned indirectly by EOS, 3,175,818 shares indirectly by Mr. Bradley’s spouse, and a separate disposition of 4,735,970 shares. The report explains Mr. Bradley’s voting and disposition power over EOS-held shares while disclaiming personal beneficial ownership except for any pecuniary interest. The form is signed by Mr. Bradley and EOS on 09/25/2025.

Positive

• Transparent joint disclosure by Nathaniel Bradley and EOS Technology Holdings Inc. clarifying indirect ownership and voting power
• Provides contractual context for the 180,000-share transfer (side letter tied to a consulting agreement)

Negative

• Insider-related dispositions reported, including a 4,735,970 share disposition and transfer of 180,000 shares, which change insider-linked share distribution
• Transfer reported at $0 for 180,000 shares, indicating a non-cash agreement rather than an open-market sale

Insights

Financial Analyst

TL;DR Insider filing records transfers of millions of shares, including a 180,000-share transfer tied to a consulting side letter.

The Form 4 records a non-derivative transfer on 09/23/2025 where EOS transferred 180,000 shares under a side letter related to a consulting agreement; price reported is $0, indicating a non-cash contractual transfer. The filing also documents a disposition line of 4,735,970 shares and large indirect holdings: 12,109,002 shares held by EOS and 3,175,818 by the spouse. For investors, these are material changes in insider-linked holdings because they alter the reported distribution of ownership, though the document provides no context on market impact or proceeds.

Corporate Governance Expert

TL;DR Joint filing clarifies control relationships and includes disclaimers of personal beneficial ownership by the reporting officer.

The disclosure appropriately states that Mr. Bradley, as an officer and director of EOS, has power to vote and dispose of EOS-held shares and includes standard disclaimers that he disclaims beneficial ownership except for pecuniary interest. The joint filing by an individual and an entity and the explanatory notes enhance transparency about indirect ownership and the contractual transfer mechanism (side letter and consulting agreement). The filing does not provide additional contractual terms beyond the transfer date and parties.

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

1. Name and Address of Reporting Person^*

BRADLEY NATHANIEL T

(Last) (First) (Middle)

C/O EOS TECHNOLOGY HOLDINGS INC.

48 WALL STREET, FLOOR 11

(Street)

NEW YORK NY 10005

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Datavault AI Inc. [ DVLT ]

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

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

3. Date of Earliest Transaction (Month/Day/Year)
09/23/2025

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

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

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

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	09/23/2025		J		180,000(1)	D	$0	12,109,002(2)	I	By EOS Technology Holdings Inc.
Common Stock								3,175,818(3)	I	By Spouse
Common Stock								4,735,970	D

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

1. Name and Address of Reporting Person^*

BRADLEY NATHANIEL T

(Last) (First) (Middle)

C/O EOS TECHNOLOGY HOLDINGS INC.

48 WALL STREET, FLOOR 11

(Street)

NEW YORK NY 10005

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

1. Name and Address of Reporting Person^*

EOS Technology Holdings Inc.

(Last) (First) (Middle)

48 WALL STREET, FLOOR 11

(Street)

NEW YORK NY 10005

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

Explanation of Responses:

1. This Form 4 is jointly filed by Nathaniel Bradley ("Mr. Bradley") and EOS Technology Holdings Inc. ("EOS"). The shares of common stock, par value $0.0001 per share (the "Common Stock") of the issuer are beneficially owned both directly and indirectly, as outlined above and more fully described below, by Mr. Bradley. 180,000 shares of Common Stock of the issuer were transferred by EOS to a third party in pursuant to a side letter, dated as of September 23, 2025, (the "Side Letter") in connection with a consulting agreement, dated as of August 19, 2025 (the "Consulting Agreement"). Both the Consulting Agreement and the Side letter are by and between EOS and the consultant under the Consulting Agreement.

2. Mr. Bradley, as an officer and member of the board of directors of EOS, has the power to dispose of and the power to vote the shares of Common Stock beneficially owned by EOS. Mr. Bradley disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of such securities for purposes of Section 16 of the Securities Exchange Act of 1934 (the "Exchange Act") or for any other purposes.

3. Mr. Bradley disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of such securities for purposes of Section 16 of the Exchange Act or for any other purposes.

	/s/ Nathaniel Bradley	09/25/2025
	EOS Technology Holdings Inc. /s/ Nathaniel Bradley	09/25/2025
	** 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.

FAQ

What insider transaction did Datavault AI (DVLT) report on 09/23/2025?

The Form 4 reports a transaction on 09/23/2025 where EOS Technology Holdings Inc. transferred 180,000 shares under a side letter tied to a consulting agreement; the price is reported as $0.

How many shares does EOS Technology Holdings report indirectly owning in DVLT?

The filing shows 12,109,002 shares of Datavault AI common stock beneficially owned indirectly by EOS Technology Holdings Inc.

Does Nathaniel Bradley report direct ownership of DVLT shares?

The filing explains Mr. Bradley has power to vote and dispose of EOS-held shares but disclaims beneficial ownership except to the extent of any pecuniary interest; specific directly owned shares are not asserted beyond the listed entries.

Was there a large disposition reported in this Form 4?

Yes, the Form 4 includes a disposition entry of 4,735,970 shares (listed as disposed).

Who signed the Form 4 and when?

The Form 4 is signed by Nathaniel Bradley and by EOS Technology Holdings Inc. with signatures dated 09/25/2025.

What documents governed the 180,000-share transfer?

The transfer was made pursuant to a side letter dated 09/23/2025 in connection with a consulting agreement dated 08/19/2025 between EOS and the consultant.