MTSI Form 144: Founder Shares Proposed Sale of 62,476 Shares

Rhea-AI Filing Summary

MACOM Technology Solutions Holdings, Inc. (MTSI) filed a Form 144 notifying the proposed sale of 62,476 common shares with an aggregate market value of $7,996,928.00, from a total of 74,471,281 shares outstanding. The filing lists the planned approximate sale date as 10/07/2025 on NASDAQ. The shares were originally acquired as founder shares on 06/30/2009. The filing also discloses multiple prior sales by Susan Ocampo during September 2025, with individual transactions ranging up to 150,000 shares on specific dates. The notice includes the required representation that the seller is not aware of undisclosed material adverse information.

Positive

• Disclosure compliance: Form 144 provides the required details including number of shares, aggregate market value, acquisition date, and planned sale date.
• Long‑held position: The shares were acquired as founder shares on 06/30/2009, indicating a long standing ownership rather than a recent insider buy.

Negative

• Substantial recent insider selling: Multiple sales by Susan Ocampo in September 2025, including transactions up to 150,000 shares, could increase selling pressure.
• Planned sale size: The proposed sale of 62,476 shares valued at $7,996,928.00 represents a non‑trivial transfer of shares into the market.

Insights

Corporate Governance Analyst

Insider filing signals planned liquidity by a long‑standing shareholder.

The notice records a proposed sale of 62,476 common shares valued at $7,996,928.00 and lists multiple sales by Susan Ocampo in September 2025, including transactions up to 150,000 shares. Insider sales can be routine liquidity events for founders but are material to investors because they change available float and signal shareholder intent.

Key dependencies include market execution on 10/07/2025 and whether sales follow a documented trading plan. Monitor subsequent Form 4 filings or additional Form 144 notices within the next few trading sessions for completion details and any trading‑plan dates.

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	The Charles Schwab Corporation 3000 Schwab Way Westlake TX 76262	62476	7996928.00	74471281	10/07/2025	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	06/30/2009	Founder Shares	Issuer			62476	06/03/2009	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
SUSAN OCAMPO 100 CHELMSFORD STREET LOWELL MA 01851	Common	09/05/2025	113275	14885388.00
SUSAN OCAMPO 100 CHELMSFORD STREET LOWELL MA 01851	Common	09/08/2025	3195	421918.00
SUSAN OCAMPO 100 CHELMSFORD STREET LOWELL MA 01851	Common	09/09/2025	45986	6029536.00
SUSAN OCAMPO 100 CHELMSFORD STREET LOWELL MA 01851	Common	09/10/2025	50361	6679719.00
SUSAN OCAMPO 100 CHELMSFORD STREET LOWELL MA 01851	Common	09/11/2025	80891	10716701.00
SUSAN OCAMPO 100 CHELMSFORD STREET LOWELL MA 01851	Common	09/12/2025	89868	11940024.00
SUSAN OCAMPO 100 CHELMSFORD STREET LOWELL MA 01851	Common	09/15/2025	150424	19920486.00
SUSAN OCAMPO 100 CHELMSFORD STREET LOWELL MA 01851	Common	09/17/2025	62435	8305195.00
SUSAN OCAMPO 100 CHELMSFORD STREET LOWELL MA 01851	Common	09/18/2025	150000	19964226.00

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 did MACOM (MTSI) disclose in the Form 144 filing?

The filing reports a proposed sale of 62,476 common shares with aggregate market value of $7,996,928.00, planned on 10/07/2025, and notes prior sales by Susan Ocampo in September 2025.

Who is selling shares according to the MTSI Form 144?

The seller identified in recent transactions is Susan Ocampo, who previously sold multiple blocks of common stock in September 2025.

When were the shares being sold originally acquired?

The shares to be sold were acquired as founder shares on 06/30/2009, with a noted payment date of 06/03/2009.

On which exchange will the MTSI shares be sold?

The filing states the sale is expected to occur on NASDAQ with an approximate sale date of 10/07/2025.

Does the Form 144 indicate undisclosed material information?

By signing the notice the seller represents they do not know any material adverse information that has not been publicly disclosed.