Michael Dunn sells under plan; SYM (SYM) files Form 144

Rhea-AI Filing Summary

Michael Dunn reported proposed sales of 9,235 Restricted Stock Units. The filing lists the security as Common (Restricted Stock Units) with the amount 9,235 and an original grant date of 05/23/2026. The record of recent activity shows multiple 10b5-1 sales executed by Michael Dunn across March–May 2026.

Key Figures

Restricted Stock Units to be sold: 9,235 shares Sale on 03/11/2026: 4,926 shares Sale on 05/26/2026: 3,930 shares +1 more

4 metrics

Restricted Stock Units to be sold 9,235 shares Restricted Stock Units dated 05/23/2026

Sale on 03/11/2026 4,926 shares 10b5-1 sale executed 03/11/2026

Sale on 05/26/2026 3,930 shares 10b5-1 sale executed 05/26/2026

Sale on 04/08/2026 3,559 shares 10b5-1 sale executed 04/08/2026

Key Terms

Restricted Stock Units, 10b5-1, Form 144

3 terms

Restricted Stock Units financial

"Restricted Stock Units | Issuer | 9235 | 05/23/2026"

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.

10b5-1 regulatory

"10b5-1 Sales for MICHAEL DUNN ... 05/20/2026"

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.

Form 144 regulatory

"Filer Information | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

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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	9235	453346.15	127215411	06/03/2026	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	05/23/2026	Restricted Stock Units	Issuer			9235	05/23/2026	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	05/26/2026	3930	208851.68
10b5-1 Sales for MICHAEL DUNN 200 Research Drive WILMINGTON MA 01887	Common	05/20/2026	1315	62094.30
10b5-1 Sales for MICHAEL DUNN 200 Research Drive WILMINGTON MA 01887	Common	05/06/2026	1608	96463.92
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

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 Michael Dunn's Form 144 for SYM report?

The Form 144 reports a proposed sale of 9,235 Restricted Stock Units tied to Common stock, dated 05/23/2026. It also lists multiple executed 10b5-1 sales by Michael Dunn between 03/11/2026 and 05/26/2026.

How many shares did Michael Dunn sell under 10b5-1 in the past three months?

The filing lists several 10b5-1 sale transactions by Michael Dunn, including 4,926 on 03/11/2026 and 3,930 on 05/26/2026. The document itemizes each sale with date and share count across March–May 2026.

What security type and date are associated with the 9,235 amount?

The 9,235 figure is labeled as Restricted Stock Units for Common stock with an associated date of 05/23/2026. The filing identifies the issuer/broker details and lists the security type as Common.

Are the past transactions described as pre‑arranged plans?

Yes; multiple entries in the sale history are explicitly labeled as 10b5-1 Sales for Michael Dunn, indicating those executed transactions were made pursuant to a pre-arranged trading plan between 03/11/2026 and 05/26/2026.