Michael Dunn sale notices via 10b5-1 for SYM (SYM) — multiple 2026 dates listed

Rhea-AI Filing Summary

Michael Dunn reported proposed sales of Common stock under Rule 144 via 10b5-1 plans. The filing lists multiple sale dates in 2026, including proposed sales of 2,035 shares for $122,129.46 on 04/24/2026 and 15,040 shares for $841,087.94 on 02/24/2026. The entries identify Restricted Stock Units and show brokerage routing through Morgan Stanley Smith Barney LLC.

Insights

Corporate Governance & Insider Transactions

Routine insider disposals under a 10b5-1 plan are reported across multiple dates in 2026.

The filing lists a sequence of proposed sales by Michael Dunn, labeled as 10b5-1 Sales, with specific share counts and gross proceeds for each trade date. This pattern is consistent with pre-arranged trading plans rather than discretionary open-market timing.

Cash-flow treatment and whether sales were executed is not stated; subsequent filings or broker confirmations would show completion. Future Form 4/144 updates could clarify net holdings after these dispositions.

Key Figures

Sale on 02/24/2026: 15,040 shares Sale on 04/24/2026: 2,035 shares Sale on 04/22/2026: 3,025 shares +2 more

5 metrics

Sale on 02/24/2026 15,040 shares gross proceeds $841,087.94

Sale on 04/24/2026 2,035 shares gross proceeds $122,129.46

Sale on 04/22/2026 3,025 shares gross proceeds $190,518.74

Sale on 04/08/2026 3,559 shares gross proceeds $195,226.10

Restricted Stock Units shown 2,923 listed under Securities To Be Sold with date 04/23/2026

Key Terms

10b5-1, Restricted Stock Units, Rule 144

3 terms

10b5-1 regulatory

"10b5-1 Sales for MICHAEL DUNN 200 Research Drive"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Restricted Stock Units financial

"Securities To Be Sold | Restricted Stock Units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Rule 144 regulatory

"Form 144 header and sale reporting for proposed sales"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

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	2923	169767.84	125753388	05/06/2026	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 *
Common	04/23/2026	Restricted Stock Units	Issuer			2923	04/23/2026	N/A

* 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 DUNN 200 Research Drive WILMINGTON MA 01887	Common	04/24/2026	2035	122129.46
10b5-1 Sales for MICHAEL DUNN 200 Research Drive WILMINGTON MA 01887	Common	04/22/2026	3025	190518.74
10b5-1 Sales for MICHAEL DUNN 200 Research Drive WILMINGTON MA 01887	Common	04/08/2026	3559	195226.10
10b5-1 Sales for MICHAEL DUNN 200 Research Drive WILMINGTON MA 01887	Common	03/25/2026	4187	223939.60
10b5-1 Sales for MICHAEL DUNN 200 Research Drive WILMINGTON MA 01887	Common	03/11/2026	4926	250338.33
10b5-1 Sales for MICHAEL DUNN 200 Research Drive WILMINGTON MA 01887	Common	02/25/2026	4274	240684.33
MICHAEL DUNN 200 Research Drive WILMINGTON MA 01887	Common	02/24/2026	15040	841087.94
10b5-1 Sales for MICHAEL DUNN 200 Research Drive WILMINGTON MA 01887	Common	02/11/2026	2593	152311.78

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)