MACOM (MTSI) Form 144 Discloses 800-Share Insider Sale

Rhea-AI Filing Summary

MACOM Technology Solutions Holdings, Inc. (MTSI) Form 144 shows a proposed sale of 800 common shares held by Jihye Whang Rosenband. The securities were acquired on 03/03/2024 through restricted stock vesting under a registered plan and were paid as compensation. The filing lists an approximate date of sale of 08/22/2025 and reports an aggregate market value of $100,000.00 for the 800 shares, with 74,471,281 shares outstanding. The table of recent activity shows the shares sold on 08/21/2025 for gross proceeds of $99,048.00. The filer attests there is no undisclosed material adverse information.

Insights

Securities Analyst

TL;DR: Insider sale of 800 shares from vested restricted stock; size is immaterial to total shares outstanding.

The transaction represents an insider sale originating from restricted stock vesting rather than a secondary issuance. At 800 shares versus 74,471,281 shares outstanding, the sale is immaterial in absolute dilution terms and unlikely to move the market. The reported aggregate market value is $100,000.00, with gross proceeds of $99,048.00 for the sale recorded on 08/21/2025. For investors, this is routine compensation-related selling; no financial performance metrics or new obligations are disclosed.

Corporate Governance Expert

TL;DR: Filing is a routine compliance disclosure of an insider sale tied to vested compensation.

This Form 144 documents compliance with Rule 144 and includes the signer’s representation that no undisclosed material adverse information exists. The origin of the securities is clearly stated as restricted stock vesting on 03/03/2024, and the filer provided broker details. There are no indications of unusual trading plans or contested disclosures in the filing itself.

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

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	800	100000.00	74471281	08/22/2025	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	03/03/2024	Restricted stock vesting under a registered plan	Issuer			800	03/03/2024	Compensation

* 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
JIHYE WHANG ROSENBAND 100 Chelmsford Street Lowell MA 01851	Common	08/21/2025	800	99048.00

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 Jihye Whang Rosenband report?

The filing reports a proposed sale of 800 common shares acquired via restricted stock vesting on 03/03/2024, with an approximate sale date of 08/22/2025 and aggregate market value of $100,000.00.

When were the 800 shares acquired according to the filing?

The shares were acquired on 03/03/2024 through restricted stock vesting under a registered plan.

How many MTSI shares are outstanding per the Form 144?

The filing lists 74,471,281 shares outstanding.

What proceeds were reported for the sale in the past 3 months?

The Form 144 shows a sale on 08/21/2025 of 800 shares for gross proceeds of $99,048.00.

Does the filing state any undisclosed material information about MACOM (MTSI)?

The filer represents by signature that they do not know any material adverse information about the issuer that has not been publicly disclosed.