MTSI Form 144: Affiliate Sells Large Blocks of Common Stock

MACOM Technology Solutions Holdings (MTSI) submitted a Form 144 notice reporting proposed sales of Common shares by an affiliate, primarily Susan Ocampo.

Rhea-AI Filing Summary

MACOM Technology Solutions Holdings (MTSI) submitted a Form 144 notice reporting proposed sales of Common shares by an affiliate, primarily Susan Ocampo. The notice lists multiple sale dates and quantities, including 400,000 shares on 05/07/2026 for $132,655,087.07 and 200,000 shares on 05/11/2026 for $72,189,891.03. The filing enumerates repeated dispositions from February through May 2026.

Insights

Securities Compliance Counsel

TL;DR: Multiple affiliate sales reported under Form 144 across Feb–May 2026.

The filing lists serial dispositions by an affiliate, primarily Susan Ocampo, with individual transactions dated between 02/13/2026 and 05/11/2026. Examples include a $132,655,087.07 sale for 400,000 shares on 05/07/2026 and a $72,189,891.03 sale for 200,000 shares on 05/11/2026.

These notices are procedural disclosures of proposed resale under Rule 144; cash‑flow treatment and whether sales were completed are not stated in the excerpt. Subsequent filings or trade confirmations would show execution details and any impact on outstanding holdings.

Key Figures

Representative sale: 400,000 shares Proceeds for 400,000-share sale: $132,655,087.07 Representative sale: 200,000 shares +3 more

6 metrics

Representative sale 400,000 shares sale dated <date>05/07/2026</date>

Proceeds for 400,000-share sale $132,655,087.07 sale dated <date>05/07/2026</date>

Representative sale 200,000 shares sale dated <date>05/11/2026</date>

Proceeds for 200,000-share sale $72,189,891.03 sale dated <date>05/11/2026</date>

Founder shares registered earlier 100,000 Founder Shares entry dated <date>11/21/2023</date>

Example smaller sale 24,530 shares sale dated <date>05/08/2026</date>

Key Terms

Form 144, Founder Shares, resale

3 terms

Form 144 regulatory

"The filing type that lists proposed resale transactions by affiliates"

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.

Founder Shares financial

"Entry labeled Founder Shares dated 11/21/2023 in the securities table"

Founder shares are the ownership stakes given to the people who start a company, often with extra voting power or protections compared with ordinary shares. For investors, they matter because founders’ control and incentives influence decisions about strategy, hiring, and whether the company sells or stays independent — like a family that keeps majority voting rights in a household decision. High founder ownership can mean stable leadership but also a risk that outside shareholders have less influence.

resale regulatory

"Multiple entries list securities to be sold or sold during the past 3 months"

Resale is the act of selling an item, asset, or security by someone who previously bought it rather than by the original maker or issuer. It matters to investors because resale activity affects how easily an investment can be sold, the price buyers are willing to pay, and the potential profit or loss — like selling a used car: condition, demand and market rules determine what you can get for it.

FAQ

What does the MTSI Form 144 filing disclose about the seller?

It discloses proposed resale transactions by an affiliate named Susan Ocampo, with multiple sale dates from 02/13/2026 to 05/11/2026. The excerpt lists share counts and dollar amounts for each reported disposition.

How large were some of the trades reported in the MTSI Form 144?

Representative trades include 400,000 shares on 05/07/2026 for $132,655,087.07 and 200,000 shares on 05/11/2026 for $72,189,891.03. Many other dated dispositions are listed in the excerpt.

Does the Form 144 state whether proceeds go to the issuer or selling holder for MTSI?

The excerpt lists resale transactions by an affiliate and dollar amounts per sale; it does not state any allocation of proceeds to the issuer. The entries identify the seller and the reported sale amounts per date.

Over what period did the reported MTSI dispositions occur?

The reported dispositions in the excerpt span from 02/13/2026 through 05/11/2026, with multiple transactions recorded on specific dates and corresponding dollar amounts shown for each sale.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/13/2026 - 08:19 PM Learn about SEC filing 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	0001252243
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	MACOM Technology Solutions Holdings, Inc.
SEC File Number	001-35451
Address of Issuer	100 CHELMSFORD STREET LOWELL MASSACHUSETTS 01851
Phone	(978)-656-2500
Name of Person for Whose Account the Securities are To Be Sold	OCAMPO SUSAN
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	Owner

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	100000	38015187.67	76295774	05/13/2026	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	11/21/2023	Founder Shares	Issuer			100000	11/21/2023	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 Box #88439 Honolulu HI 96830	Common	02/13/2026	42173	10136319
Susan Ocampo Box #88439 Honolulu HI 96830	Common	02/13/2026	19877	4870489
Susan Ocampo Box #88439 Honolulu HI 96830	Common	02/17/2026	80123	19655435
Susan Ocampo Box #88439 Honolulu HI 96830	Common	02/18/2026	3156	789003
Susan Ocampo Box #88439 Honolulu HI 96830	Common	02/24/2026	53509	13381379
Susan Ocampo Box #88439 Honolulu HI 96830	Common	02/25/2026	261763	66600315
Susan Ocampo Box #88439 Honolulu HI 96830	Common	03/02/2026	200000	50539095
Susan Ocampo Box #88439 Honolulu HI 96830	Common	03/25/2026	100000	24505253.65
Susan Ocampo Box #88439 Honolulu HI 96830	Common	04/08/2026	200000	49044227.56
Susan Ocampo Box #88439 Honolulu HI 96830	Common	04/10/2026	15221	3928692.31
Susan Ocampo Box #88439 Honolulu HI 96830	Common	04/13/2026	100000	26190830.39
Susan Ocampo Box #88439 Honolulu HI 96830	Common	04/14/2026	61898	16356261.77
Susan Ocampo Box #88439 Honolulu HI 96830	Common	04/15/2026	76218	19893766.89
Susan Ocampo Box #88439 Honolulu HI 96830	Common	04/16/2026	100000	26193350
Susan Ocampo Box #88439 Honolulu HI 96830	Common	04/17/2026	87888	23770803.7
Susan Ocampo Box #88439 Honolulu HI 96830	Common	04/21/2026	66541	19044326.54
Susan Ocampo Box #88439 Honolulu HI 96830	Common	04/24/2026	100000	29019401.25
Susan Ocampo Box #88439 Honolulu HI 96830	Common	05/06/2026	176663	54528345.41
Susan Ocampo Box #88439 Honolulu HI 96830	Common	05/07/2026	400000	132655087.07
Susan Ocampo Box #88439 Honolulu HI 96830	Common	05/08/2026	24530	8831046.24
Susan Ocampo Box #88439 Honolulu HI 96830	Common	05/11/2026	200000	72189891.03

144: Remarks and Signature

Remarks	Filing encompasses 1 Trust account in which Susan Ocampo is the TTEE. 4 WK average volume April 13th Wk 1: 4,418,181 April 20th Wk 2: 4,964,456 April 27th Wk 3: 4,722,896 May 4th Wk 4: 9,036,327 Total = 23,141,860 / 4 = 5,785,465 shares per week average
Date of Notice	05/13/2026
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	/s/ Susan Ocampo
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)