Insider 10b5-1 sale reported for MTSI (NASDAQ: MTSI) — 5,274 shares

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC (reporting for an affiliate) filed a Form 144 reporting planned/reserved equity and a recent 10b5-1 sale by Donghyun Thomas Hwang. The notice lists 8,127 Performance Stock Units, 591 Restricted Stock Units, and 215 Employee Stock Purchase Plan shares with grant dates in October–November 2024. The filing records a 10b5-1 sale of 5,274 common shares on 02/02/2026 for $1,192,248.76. Shares outstanding are shown as 75,011,970 as of 04/30/2026.

Insights

Equity Capital Markets Analyst

Routine Form 144 notice; shows a single 10b5-1 sale and listed equity awards.

The filing documents a 10b5-1 disposition of 5,274 shares for $1,192,248.76 on 02/02/2026 and enumerates equity awards (Performance Stock Units, RSUs, ESPP) granted in Oct–Nov 2024. This structure is consistent with scheduled sales tied to a trading plan.

Timing and mechanics are explicit in the excerpt; cashflow recipient and additional holder-level details beyond the named seller are not provided in the excerpt.

Key Figures

10b5-1 sale: 5,274 shares Proceeds reported: $1,192,248.76 Performance Stock Units: 8,127 units +3 more

6 metrics

10b5-1 sale 5,274 shares sold on 02/02/2026

Proceeds reported $1,192,248.76 consideration for 5,274-share 10b5-1 sale

Performance Stock Units 8,127 units grant date 10/27/2024

Restricted Stock Units 591 units grant date 11/08/2024

Employee Stock Purchase Plan 215 shares grant date 11/15/2024

Shares outstanding 75,011,970 shares as of 04/30/2026

Key Terms

10b5-1, Performance Stock Units, Restricted Stock Units, Employee Stock Purchase Plan

4 terms

10b5-1 regulatory

"10b5-1 Sales for DONGHYUN THOMAS HWANG 100 Chelmsford Street Lowell MA"

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.

Performance Stock Units financial

"Performance Stock Units | Issuer | 8127 | 10/27/2024"

Performance stock units are a type of company award that grants employees shares of stock only if certain performance goals are met. They motivate employees to work toward specific company achievements, aligning their interests with those of shareholders. For investors, they can influence a company's future stock supply and reflect management’s confidence in reaching key targets.

Restricted Stock Units financial

"Restricted Stock Units | Issuer | 591 | 11/08/2024"

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.

Employee Stock Purchase Plan financial

"Employee Stock Purchase Plan | Issuer | 215 | 11/15/2024"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

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	8933	2408604.79	75011970	04/30/2026	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	10/27/2024	Performance Stock Units	Issuer			8127	10/27/2024	N/A
Common	11/08/2024	Restricted Stock Units	Issuer			591	11/08/2024	N/A
Common	11/15/2024	Employee Stock Purchase Plan	Issuer			215	11/15/2024	Cash

* 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
10b5-1 Sales for DONGHYUN THOMAS HWANG 100 Chelmsford Street Lowell MA 01851	Common	02/02/2026	5274	1192248.76

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)