[144] MACOM Technology Solutions Holdings, Inc. SEC Filing

Rhea-AI Filing Summary

MACOM Technology Solutions Holdings, Inc. (MTSI) submitted a Form 144 notice reporting proposed and recent sales of Common stock under Rule 144. The filer proposes to sell 150,000 shares through Charles Schwab on or about 09/18/2025, with an indicated aggregate market value of $19,449,000 based on the filing. The shares were originally acquired as founder shares on 06/30/2009. The filing also reports that Susan Ocampo sold a total of 596,435 shares across multiple trades between 09/05/2025 and 09/17/2025, with individual gross proceeds shown for each sale. The notice includes the required representation that the seller is not aware of undisclosed material adverse information.

Positive

• Rule 144 compliance documented with broker, dates, quantities, and seller certification
• Founder shares being sold after long-term holding (acquired 06/30/2009) indicating planned liquidity rather than short-term trading

Negative

• Insider sales concentration: 596,435 shares sold between 09/05/2025 and 09/17/2025 (~0.80% of outstanding shares)
• Proposed sale of 150,000 shares (~0.20% of outstanding) for $19,449,000 may be perceived negatively by some market participants

Insights

Securities Analyst

TL;DR: Insider sales totaling 596,435 shares in the past three months and a proposed sale of 150,000 shares are disclosed; transaction sizes are modest versus total shares outstanding.

The filing is a routine Rule 144 notification documenting secondary-market sales by an insider or related person and a new proposed sale by a founder-share holder. The proposed 150,000-share sale equals roughly 0.20% of the reported 74,471,281 outstanding shares, while the aggregate recent sales of 596,435 shares equal about 0.80% of outstanding shares. Such volumes are meaningful to transparency but are not large enough, in isolation, to imply a material change to company control or immediate valuation pressure. Investors should treat this as an informational disclosure rather than a standalone signal of company performance.

Corporate Governance Specialist

TL;DR: The Form 144 complies with disclosure requirements and shows substantial insider liquidity events over a short period.

The document shows compliance with Rule 144 procedures by identifying the broker, sale dates, and amounts, and includes the seller's certification regarding material non-public information. From a governance perspective, clustered insider sales can warrant monitoring for pattern changes in insider behavior, but the filing itself provides no evidence of undisclosed adverse information. The presence of founder shares being sold after long holding periods is consistent with ongoing diversification of insider holdings rather than an operational red flag.

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	150000	19449000.00	74471281	09/18/2025	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			150000	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

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 Form 144 filed for MTSI disclose?

The Form 144 discloses a proposed sale of 150,000 common shares (aggregate market value $19,449,000) and prior sales of 596,435 shares by Susan Ocampo between 09/05/2025 and 09/17/2025.

Who is selling the MTSI shares reported in this filing?

The filing lists sales by Susan Ocampo and a proposed sale by the person who acquired founder shares on 06/30/2009; the broker for the proposed sale is The Charles Schwab Corporation.

How large are these insider sales relative to MTSI's outstanding shares?

The filing reports 74,471,281 shares outstanding; recent sales of 596,435 shares are about 0.80% of outstanding shares and the proposed 150,000-share sale is about 0.20%.

Do the Form 144 disclosures indicate undisclosed material information about MTSI?

No. The seller signs a representation that they are not aware of any material adverse information that has not been publicly disclosed; the filing contains no additional operational or financial information.

When is the proposed sale expected to occur?

The proposed sale is listed with an approximate date of 09/18/2025.