Michael D. Dunn plans sale of 8,470 SYM shares on NASDAQ

Rhea-AI Filing Summary

Michael D. Dunn has filed a Form 144 notice to sell up to 8,470 shares of Class A common stock through Morgan Stanley Smith Barney LLC on NASDAQ, with an aggregate market value of $509,091.89. These shares relate to restricted stock that vested on 01/23/2026 under a registered plan in payment for services rendered. The filing notes that 113,614,046 shares of this class were outstanding, providing context for the size of the planned sale.

Over the prior three months, Dunn previously sold Class A common shares in multiple transactions, including 1,012 shares for $60,633.04 on 12/31/2025 and 2,235 shares for $162,984.25 on 01/13/2026. By signing the notice, he represents that he is not aware of any material adverse, nonpublic information about the issuer’s current or prospective operations.

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
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	8470	509091.89	113614046	01/26/2026	NASDAQ

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	01/23/2026	Restricted stock vesting under a registered plan	Issuer			8470	01/23/2026	Services Rendered

* 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
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Class A Common	12/31/2025	1012	60633.04
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Class A Common	12/17/2025	1190	74535.60
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Class A Common	12/03/2025	1400	96258.00
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Class A Common	11/19/2025	1647	87696.75
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Class A Common	11/05/2025	1938	150338.81
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Class A Common	01/14/2026	1363	93809.29
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Class A Common	01/13/2026	2235	162984.25
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Class A Common	01/02/2026	2174	140114.30

144: Remarks and Signature

Remarks

Date of Notice

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 this Form 144 filing for SYM disclose?

The filing states that Michael D. Dunn intends to sell up to 8,470 shares of Class A common stock of SYM on NASDAQ through Morgan Stanley Smith Barney LLC, with an aggregate market value of $509,091.89 at the time of the notice.

How did Michael D. Dunn acquire the 8,470 SYM shares he plans to sell?

The 8,470 shares of Class A common stock were acquired on 01/23/2026 as restricted stock vesting under a registered plan from the issuer, in consideration for services rendered.

How many SYM shares are outstanding compared with the amount Dunn may sell?

The filing reports that there were 113,614,046 shares of the relevant class outstanding, compared with the 8,470 shares that Dunn has indicated he may sell under this Form 144 notice.

What recent SYM share sales by Michael D. Dunn are reported in this Form 144?

The document lists several Class A common stock sales in the prior three months, including 1,012 shares on 12/31/2025 for $60,633.04 and 2,235 shares on 01/13/2026 for $162,984.25, along with other transactions between 11/05/2025 and 01/14/2026.

On which exchange and through which broker will the SYM shares be sold?

The planned sale of 8,470 Class A common shares is indicated to occur on the NASDAQ market through Morgan Stanley Smith Barney LLC Executive Financial Services, located at One New York Plaza, New York, NY 10004.

What representation does Michael D. Dunn make by signing this Form 144?

By signing, Dunn represents that he does not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed, consistent with the statement included in the notice.