[Form 4] WiSA Technologies, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Bradley Nathaniel T, CEO and director of EOS Technology Holdings Inc., filed a Form 4 reporting transactions in Datavault AI Inc. (DVLT) common stock dated 08/28/2025. The filing shows sales of 29,391 and 4,862 shares at $0.40 per share executed to satisfy tax obligations from vesting equity awards; these sales were conducted by the issuer on behalf of the reporting person and his spouse and were not discretionary transactions. After the reported sales, Mr. Bradley directly held 4,735,970 shares and indirectly had voting/disposition power over 2,289,002 shares through EOS Technology Holdings Inc., while his spouse beneficially owned 3,175,818 shares. The filing also corrects prior Form 4s to include 200,000 shares issued to the reporting person’s spouse on June 25, 2025, which had been omitted from earlier reports.

Positive

• Sales were tax-withholding transactions executed by the issuer and not discretionary dispositions by the reporting person
• Amendment corrects prior omission by adding 200,000 shares received by the reporting person’s spouse, improving disclosure accuracy
• Significant retained holdings remain: 4,735,970 shares directly and economic exposure via 2,289,002 shares held by EOS

Negative

• Prior reporting omission of 200,000 shares to the reporting person’s spouse across multiple Form 4 filings indicates a lapse in disclosure controls
• Spouse holdings and EOS-controlled shares required disclaimer language, complicating clear attribution of beneficial ownership

Insights

Financial Analyst

TL;DR: Insider sales were tax-withholding transactions; corrected prior omission of 200,000 spouse shares; overall neutral to company valuation.

The reported sales on 08/28/2025 were executed by the issuer to satisfy tax obligations tied to vesting awards, indicating they were not discretionary liquidity events by the insider. The correction adding 200,000 shares to prior filings improves disclosure accuracy but highlights an earlier reporting lapse. Mr. Bradley directly and indirectly controls a substantial share base through EOS, which preserves his economic alignment with Datavault AI, though precise voting influence is partially disclaimed. Transaction sizes reported here are small relative to his total holdings and thus unlikely to materially affect market supply or valuation.

Corporate Governance Expert

TL;DR: Filing corrects disclosure errors and clarifies beneficial ownership; raises governance questions about prior omissions.

The amendment rectifying the omission of 200,000 shares issued to the reporting person’s spouse is important for accurate Section 16 reporting and beneficial ownership transparency. While the sales were routine tax-withholding trades executed by the issuer, the prior failure to report the spouse’s grant across several Form 4s suggests a lapse in controls or processes around insider reporting. The reporting person’s disclaimer of beneficial ownership for shares held by EOS and the spouse is standard, but investors and regulators rely on timely, complete filings; remediation steps or controls improvements would strengthen governance practices.

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

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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).

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^*

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)
08/28/2025

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

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

X	Form filed by One Reporting Person
	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	08/28/2025		S(1)		29,391(1)	D	$0.4	4,735,970	D
Common Stock								2,289,002(2)	I	By EOS Technology Holdings Inc.
Common Stock	08/28/2025		S(3)		4,862(3)	D	$0.4	3,175,818(4)	I	By Spouse

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. Represents shares of common stock, par value $0.0001 per share ("Common Stock"), of the issuer sold to the open market by the issuer on behalf of the reporting person to satisfy tax obligations in connection with vesting of equity awards and was not a discretionary transaction by the reporting person.

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. Represents shares of Common Stock of the issuer sold to the open market by the issuer on behalf of Mr. Bradley's spouse, Sonia Choi ("Ms. Choi") to satisfy tax obligations in connection with vesting of equity awards and was not a discretionary transaction by Mr. Bradley or Ms. Choi.

4. On June 27, 2025, July 14, 2025, August 4, 2025, August 12, 2025, and August 20, 2025, Mr. Bradley filed Form 4's which inadvertently did not report 200,000 shares of Common Stock of the issuer which were received by Ms. Choi on June 25, 2025, as compensation for Ms. Choi's service as an employee of the issuer pursuant to the issuer's 2018 Long-Term Stock Incentive Plan. Accordingly, the number of securities reported as beneficially owned in this filing includes the grant of 200,000 shares previously omitted from the prior filings. 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	09/02/2025
	** 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 transactions did the Datavault AI (DVLT) Form 4 report for Bradley Nathaniel T?

The Form 4 reported sales of 29,391 and 4,862 shares on 08/28/2025 at $0.40 per share executed to satisfy tax obligations from vested awards.

How many DVLT shares does Mr. Bradley directly and indirectly report owning after these transactions?

After the reported transactions Mr. Bradley directly owned 4,735,970 shares and had indirect beneficial ownership/power over 2,289,002 shares through EOS Technology Holdings Inc.

What correction was made in this Form 4 amendment?

The filing corrects prior Form 4s to include 200,000 shares issued to the reporting person’s spouse on June 25, 2025 that were previously omitted.

Were the insider sales discretionary trades by Mr. Bradley?

No. The filing states the sales were executed by the issuer on behalf of the reporting person and his spouse to satisfy tax obligations and were not discretionary transactions.

Does Mr. Bradley claim beneficial ownership of shares held by EOS or his spouse?

Mr. Bradley disclaims beneficial ownership of the shares held by EOS and his spouse except to the extent of his pecuniary interest, while noting he has power to vote and dispose of EOS-held shares.