T. Rowe Price Investment Management (MTSI) discloses 2.85M MACOM shares in 13G/A

Rhea-AI Filing Summary

T. Rowe Price Investment Management, Inc. filed an amended Schedule 13G reporting its holdings of MACOM Technology Solutions Holdings Inc. common stock. The firm reports beneficial ownership of 2,850,185 shares of common stock, representing 3.7% of the class.

The filer reports sole power to vote 2,841,849 shares and sole power to dispose of 2,850,185 shares, with no shared voting or dispositive power. The filing states that ownership of this amount represents ownership of 5 percent or less of the class and expressly denies that this filing constitutes an admission of beneficial ownership.

Key Figures

Beneficially owned shares: 2,850,185 shares Percent of class: 3.7% Sole voting power: 2,841,849 shares +3 more

6 metrics

Beneficially owned shares 2,850,185 shares Common stock beneficially owned by T. Rowe Price Investment Management, Inc.

Percent of class 3.7% Percentage of MACOM common stock class reported as beneficially owned

Sole voting power 2,841,849 shares Shares over which the filer has sole power to vote or direct the vote

Sole dispositive power 2,850,185 shares Shares over which the filer has sole power to dispose or direct disposition

Shared voting power 0 shares Shares over which the filer has shared power to vote

Shared dispositive power 0 shares Shares over which the filer has shared power to dispose

Key Terms

beneficially owned, sole power to vote, sole power to dispose, Ownership of 5 percent or less of a class, +1 more

5 terms

beneficially owned financial

"Amount beneficially owned: 2850185"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

sole power to vote financial

"Sole power to vote or to direct the vote: 2841849"

sole power to dispose financial

"Sole power to dispose or to direct the disposition of: 2850185"

Ownership of 5 percent or less of a class financial

"Ownership of 5 percent or less of a class"

Schedule 13G regulatory

"T. Rowe Price Investment Management, Inc. hereby declares and affirms that the filing of"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

FAQ

What percentage of MACOM Technology Solutions (MTSI) does T. Rowe Price Investment Management report owning?

T. Rowe Price Investment Management reports beneficial ownership of 3.7% of MACOM Technology Solutions’ common stock, based on 2,850,185 shares held. This position is disclosed in an amended Schedule 13G filing.

How many MACOM Technology Solutions (MTSI) shares does T. Rowe Price Investment Management beneficially own?

T. Rowe Price Investment Management reports beneficial ownership of 2,850,185 shares of MACOM Technology Solutions common stock. This share amount corresponds to 3.7% of the outstanding class, according to the Schedule 13G/A.

What voting power does T. Rowe Price Investment Management have over MACOM Technology Solutions (MTSI) shares?

T. Rowe Price Investment Management reports sole voting power over 2,841,849 shares of MACOM Technology Solutions common stock and no shared voting power. It also reports sole dispositive power over 2,850,185 shares.

Does T. Rowe Price Investment Management claim beneficial ownership of MACOM Technology Solutions (MTSI) shares?

The firm expressly denies that the filing should be construed as an admission of beneficial ownership of the securities. It states that beneficial ownership of the reported MACOM shares is expressly denied in the Schedule 13G/A.

Why does the MACOM Technology Solutions (MTSI) filing mention ownership of 5 percent or less of a class?

The filing states that T. Rowe Price Investment Management has ownership of 5 percent or less of MACOM’s common stock class. This reflects the reported 3.7% ownership level, below the 5% threshold for larger holders.

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Available on EDGAR 08/14/2026 - 10:42 AM Accepted by SEC EDGAR 08/14/2026 - 10:39 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 2)

MACOM TECHNOLOGY SOLUTIONS HOLDINGS INC

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

55405Y100

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 55405Y100

1

Names of Reporting Persons

T. Rowe Price Investment Management, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

MARYLAND

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 2,841,849.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,850,185.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,850,185.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.7 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: MACOM TECHNOLOGY SOLUTIONS HOLDINGS INC
(b)	Address of issuer's principal executive offices: 100 CHELMSFORD STREET, LOWELL, MA, 01851
Item 2.
(a)	Name of person filing: T. Rowe Price Investment Management, Inc.
(b)	Address or principal business office or, if none, residence: 1307 Point Street, Baltimore, MD 21231
(c)	Citizenship: Maryland
(d)	Title of class of securities: COMMON STOCK
(e)	CUSIP No.: 55405Y100
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 2850185
(b)	Percent of class: 3.7 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 2841849
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 2850185
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. T. Rowe Price Investment Management, Inc. hereby declares and affirms that the filing of Schedule 13G shall not be construed as an admission that Price Investment Management is the beneficial owner of the securities referred to, which beneficial ownership is expressly denied.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

T. Rowe Price Investment Management, Inc.

Signature:	Ellen York
Name/Title:	Vice President
Date:	08/14/2026