Michael D. Dunn sells shares, restricted vesting noted (SYM)

Rhea-AI Filing Summary

Michael D. Dunn reported multiple sales of common stock on Form 144, with recent transactions across March–May 2026. The filing lists a restricted stock vesting of 3,930 shares on 05/23/2026 under a registered plan and several open-market dispositions showing proceeds (for example, $62,021.27 for 1,315 shares on 05/20/2026). The record lists transaction dates, share counts, and gross proceeds for each sale.

Insights

Insider Transactions Analyst

Routine Form 144 reporting shows a series of dispositions and a restricted‑stock vesting event

The filing documents a restricted stock vesting of 3,930 shares on 05/23/2026 and multiple reported sales by Michael D. Dunn across March–May 2026 with per‑trade gross proceeds listed in the table. The entries include dates, share counts, and dollar amounts.

These are transaction disclosures for regulatory reporting; cash‑flow treatment and whether sales were pursuant to trading plans are not stated in the excerpt. Subsequent SEC filings or broker confirmations could provide additional context.

Key Figures

Restricted shares vesting: 3,930 shares Sale example — 05/20/2026: 1,315 shares Sale example — 03/11/2026: 4,926 shares +1 more

4 metrics

Restricted shares vesting 3,930 shares vesting under registered plan on <date>05/23/2026</date>

Sale example — 05/20/2026 1,315 shares proceeds <money>$62,021.27</money> on <date>05/20/2026</date>

Sale example — 03/11/2026 4,926 shares proceeds <money>$250,086.03</money> on <date>03/11/2026</date>

Sale example — 04/24/2026 2,035 shares proceeds <money>$122,129.46</money> on <date>04/24/2026</date>

Key Terms

Restricted stock vesting, Form 144, Services Rendered

3 terms

Restricted stock vesting financial

"Restricted stock vesting under a registered plan"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Form 144 regulatory

"144: Securities To Be Sold"

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.

Services Rendered financial

"05/23/2026 | Services Rendered"

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	3930	208851.68	127215411	05/26/2026	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 *
Common	05/23/2026	Restricted stock vesting under a registered plan	Issuer			3930	05/23/2026	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	05/20/2026	1315	62021.27
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Class A Common	05/06/2026	1608	96375.53
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Common	04/24/2026	2035	122129.46
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Class A Common	04/22/2026	3025	190357.56
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Class A Common	04/08/2026	3559	195038.12
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Class A Common	03/25/2026	4187	223724.25
MICHAEL D DUNN 200 Research Drive Wilmington MA 01887	Class A Common	03/11/2026	4926	250086.03

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 SYM's Form 144 filed by Michael D. Dunn show?

The filing lists multiple sales and a restricted stock vesting. It shows a vesting of 3,930 shares on 05/23/2026 and several sale rows with share counts and gross proceeds for March–May 2026.

How many shares vested under the registered plan in the SYM filing?

The document records a restricted stock vesting of 3,930 shares on 05/23/2026. The entry is labeled as vesting under a registered plan for services rendered.

What proceeds are reported for recent Michael D. Dunn sales in SYM's Form 144?

Each sale row shows gross proceeds per transaction. Examples include $62,021.27 for 1,315 shares on 05/20/2026 and $250,086.03 for 4,926 shares on 03/11/2026 as listed in the table.

Does the Form 144 excerpt state whether sales were part of a 10b5‑1 plan?

No. The excerpt lists dates, share counts, and proceeds but does not state whether transactions were made under a Rule 10b5‑1 plan or another prearranged arrangement.