MTSI (MTSI) affiliate lists multiple sizeable share disposals Feb–Apr 2026

Rhea-AI Filing Summary

MTSI reporting person filed a Form 144 notice for multiple proposed sales of Common stock by Susan Ocampo. The excerpt lists numerous transactions between 02/03/2026 and 04/16/2026, including single-day amounts such as 261,763 shares (02/25/2026), 200,000 shares (03/02/2026), and several 100,000- and 200,000-share entries. The filing itemizes each proposed sale date and share amount and identifies the broker as Goldman Sachs & Co. LLC.

Insights

Securities Compliance Specialist

Form 144 lists sizeable proposed affiliate sales across Feb–Apr 2026.

The filing lists multiple proposed dispositions by Susan Ocampo with explicit per-date share amounts, notably 261,763 shares on 02/25/2026 and several 100,000–200,000-share entries. It names Goldman Sachs & Co. LLC as the broker.

These are notice filings required for affiliate sales; actual sale execution, settlement, or any restrictions are not stated in the excerpt, so market impact depends on whether and when trades occur.

Key Figures

Largest single proposed sale: 261,763 shares Other large proposed sale: 200,000 shares Multiple 100,000-share entries: 100,000 shares +2 more

5 metrics

Largest single proposed sale 261,763 shares 02/25/2026

Other large proposed sale 200,000 shares 03/02/2026

Multiple 100,000-share entries 100,000 shares 02/03/2026; 02/06/2026; 04/13/2026 (examples)

Broker Goldman Sachs & Co. LLC 200 West Street, New York NY 10282

Reporting period 02/03/2026–04/16/2026 Dates of listed proposed sales

Key Terms

Form 144, Securities Sold During The Past 3 Months, Broker

3 terms

Form 144 regulatory

"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.

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months"

Broker market

"Common | Goldman Sachs & Co. LLC 200 West Street New York"

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	Goldman Sachs & Co. LLC 200 West Street New York NY 10282	87888	24342339.36	74924082	04/17/2026	NASD

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	06/30/2009	Acquired from issuer in private transaction	The Issuer			87888	06/30/2009	None

* 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
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	02/03/2026	100000	23029116
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	02/06/2026	100000	23584697
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	02/12/2026	57827	13897141
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	02/13/2026	42173	10136319
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	02/13/2026	19877	4870489
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	02/17/2026	80123	19655435
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	02/11/2026	3156	789003
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	02/09/2026	53509	13381379
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	02/25/2026	261763	66600315
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	02/18/2026	3156	789003
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	02/24/2026	53509	13381379
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	03/02/2026	200000	50539095
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	03/25/2026	100000	24505253.65
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	04/08/2026	200000	49044230
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	04/10/2026	15221	3928692.31
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	04/13/2026	100000	26190830.39
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	04/14/2026	61898	16356261.77
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	04/15/2026	76218	19893766.89
Susan Ocampo 100 Chelmsford Street Lowell MA 01851	Common	04/16/2026	100000	26193350

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 the MTSI Form 144 filed by Susan Ocampo disclose?

It discloses proposed sales of Common stock by Susan Ocampo. The excerpt lists multiple proposed sale dates from 02/03/2026 to 04/16/2026 with individual share amounts such as 261,763 and 200,000.

Who is the broker listed on the MTSI Form 144?

Goldman Sachs & Co. LLC is listed as the broker for the transactions. The filing identifies the broker address as 200 West Street, New York, NY 10282 in the excerpt.

Which are the largest single-date share amounts shown in the filing?

Largest single-date amounts include 261,763 shares on 02/25/2026 and 200,000 shares on 03/02/2026. Several other entries of 100,000 and 200,000 shares appear throughout Feb–Apr 2026.

Does the Form 144 confirm sales have completed?

No — it provides notice of proposed sales, not confirmation of settlement. The excerpt itemizes proposed sale dates and amounts; execution, settlement, and proceeds are not confirmed in the provided text.

Over what period do the listed transactions occur?

The listed proposed sales span from 02/03/2026 through 04/16/2026. Each entry in the excerpt includes a specific date and share amount for the reported proposed disposition.