DSP (NASDAQ) Rule 144: 113,760 Class A shares slated for resale

Rhea-AI Filing Summary

DSP Rule 144 notice states 113,760 shares of Class A Common Stock are proposed for sale as of 03/17/2026. The filing lists prior sales in the three months ending 12/18/2025, including a 53,434-share sale by Tim Vanderhook and a 31,566-share sale by T&L VANDERHOOK Trust.

The filing indicates the Class B shares were acquired in a private transaction and will convert to Class A shares in connection with any sales; timing and cash‑flow treatment are not stated in the excerpt.

Insights

Securities Attorney

Rule 144 notice documents a proposed resale of restricted shares under resale conditions.

The notice lists 113,760 shares of Class A Common Stock to be sold as of 03/17/2026, and states those Class A shares were acquired via conversion of Class B shares obtained in a private transaction. The filing records prior dispositions on 12/18/2025 by named holders.

Compliance depends on meeting Rule 144 conditions (holding period, current public information, volume limitations); the excerpt does not state which specific Rule 144 conditions are satisfied. Subsequent filings or broker confirmations may show sale execution and proceeds.

Capital Markets Analyst

Provides a potential short‑term selling overhang of 113,760 shares recorded for resale.

The notice lists recent dispositions of 53,434 and 31,566 shares on 12/18/2025

Market impact depends on actual sale timing and method; the excerpt lists planned conversion and resale but does not specify distribution methods or whether sales will be block trades, broker transactions, or otherwise.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A Common Stock	Goldman Sachs & Co. LLC 200 West Street New York NY 10282	113760	1336680	17755759	03/17/2026	NASD

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A Common Stock	03/17/2026	Acquired Class B common shares from Issuer in private transaction; Class B common shares to be converted to Class A common shares in connection with any sales	Issuer			113760	03/17/2026	None

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Tim Vanderhook 2722 Michelson Drive Suite 100 Irvine CA 92612	Class A Common Stock	12/18/2025	53434	636398.94
T&L VANDERHOOK Trust 2722 Michelson Drive Suite 100 Irvine CA 92612	Class A Common Stock	12/18/2025	31566	375951.06

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the DSP Form 144 disclose about shares offered?

It discloses 113,760 shares of Class A Common Stock proposed for sale as of 03/17/2026. The filing notes the shares derive from Class B shares acquired in a private transaction that will convert to Class A upon sale.

Who sold shares in the prior three months in the DSP filing?

Tim Vanderhook sold 53,434 shares on 12/18/2025, and T&L VANDERHOOK Trust sold 31,566 shares on the same date. Those dispositions are listed under "Securities Sold During The Past 3 Months."

Does the filing specify how the 113,760 shares will be sold?

The excerpt lists the proposed sale quantity and conversion condition but does not specify distribution methods. It states Class B shares were acquired privately and will convert to Class A in connection with any sales; execution mechanics are not provided.

Does the Form 144 state cash‑flow treatment or proceeds recipient for DSP shares?

The excerpt indicates the issuer is listed as the source for acquired Class B shares but does not state who will receive proceeds or detail cash‑flow treatment. The filing text in the provided excerpt does not disclose proceeds allocation.

Are the prior December 2025 sales included in the offered amount for DSP?

The filing separately lists 113,760 shares proposed for sale as of 03/17/2026 and prior sales on 12/18/2025. The December dispositions are historical transactions; they are not presented as part of the 113,760-share proposed sale.