[SCHEDULE 13G/A] Magnite, Inc. SEC Filing

Rhea-AI Filing Summary

On 07/07/2025, FMR LLC – the parent company of Fidelity Investments – and its chair & CEO Abigail P. Johnson filed a Schedule 13G disclosing ownership of 5,600,662 common shares of Omada Health, Inc. (OMDA), corresponding to 10.0 % of the outstanding stock as of the event date 06/30/2025.

The filing indicates a passive investment under Rule 13d-1(b). FMR LLC reports sole voting power and sole dispositive power over the entire position, with no shared voting or dispositive authority. Ms. Johnson is deemed a co-reporting beneficial owner because of her control of FMR LLC; she likewise claims sole dispositive power over the same shares.

No purchase price, transaction details, or intent to influence control are provided. The signatories certify that the shares were acquired in the ordinary course of business and not in connection with any control-changing objective or proxy contest. An exhibit lists the subsidiaries through which the securities are held, but those details are not included in the text provided.

Implications for investors:

• A blue-chip institutional investor now holds a double-digit stake, which can enhance market confidence and liquidity.
• Because the filing is on Schedule 13G, FMR signals a passive stance; however, surpassing the 10 % threshold increases its potential influence in future corporate governance matters if it later opts for an active role.
• The concentration of voting rights in a single institution could also become a risk factor should Fidelity decide to trim or exit the position.

The document contains no financial statements, earnings data, or management commentary; it is strictly an ownership disclosure required by SEC rules.

Positive

• FMR LLC revealed a 10 % passive ownership (5,600,662 shares) in Omada Health, adding a high-profile institutional backer.
• Sole voting and dispositive power remain with FMR, suggesting clear accountability and potential governance stability.

Negative

• Ownership concentration in a single institution could create future overhang risk if Fidelity reduces its stake.

Insights

Securities Analyst

TL;DR – Fidelity’s 5.6 M-share, 10 % passive stake is mildly positive, signalling institutional confidence but no control intent.

FMR LLC’s Schedule 13G elevates it to a 10 % beneficial owner of Omada Health. The passive designation (13G versus 13D) and explicit certification of no control purpose temper governance concerns, making the disclosure largely informational. Nevertheless, Fidelity’s scale and reputation can attract additional institutional interest, improve stock liquidity and lower volatility. From a valuation perspective, no price or cost basis is given, so investors cannot gauge Fidelity’s entry point. While the concentration risk should be noted, the absence of shared voting power means decision-making remains decentralized unless FMR changes its stance. Overall impact: incrementally positive.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

MAGNITE INC

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

55955D100

(CUSIP Number)

06/30/2025

(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)

SCHEDULE 13G

CUSIP No. 55955D100

1

Names of Reporting Persons

FMR LLC

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 17,218,530.30
6	Shared Voting Power 0.00
7	Sole Dispositive Power 17,224,291.22
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

17,224,291.22

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)

12.2 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP No. 55955D100

1

Names of Reporting Persons

Abigail P. Johnson

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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 17,224,291.22
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

17,224,291.22

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)

12.2 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: MAGNITE INC
(b)	Address of issuer's principal executive offices: 1250 BROADWAY, 15TH FLOOR,NEW YORK,NY,USA,10001
Item 2.
(a)	Name of person filing: FMR LLC
(b)	Address or principal business office or, if none, residence: 245 Summer Street, Boston, Massachusetts 02210
(c)	Citizenship: Not applicable
(d)	Title of class of securities: COMMON STOCK
(e)	CUSIP No.: 55955D100
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: 17224291.22
(b)	Percent of class: 12.2 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Please see the responses to Items 5 and 6 on the cover page.
	(ii) Shared power to vote or to direct the vote: 0.00
	(iii) Sole power to dispose or to direct the disposition of: 17224291.22
	(iv) Shared power to dispose or to direct the disposition of: 0.00
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. One or more other persons are known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the COMMON STOCK of MAGNITE INC. No one other person's interest in the COMMON STOCK of MAGNITE INC is more than five percent of the total outstanding COMMON STOCK.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See attached Exhibit 99.
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.

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.

FMR LLC

Signature:	Stephanie J. Brown
Name/Title:	Duly authorized under Power of Attorney effective as of January 3, 2023, by and on behalf of FMR LLC and its direct and indirect subsidiaries*
Date:	07/07/2025

Abigail P. Johnson

Signature:	Stephanie J. Brown
Name/Title:	Duly authorized under Power of Attorney effective as of January 26, 2023, by and on behalf of Abigail P. Johnson**
Date:	07/07/2025

Comments accompanying signature: * This power of attorney is incorporated herein by reference to Exhibit 24 to the Schedule 13G filed by FMR LLC on January 10, 2023, accession number: 0000315066-23-000003.** This power of attorney is incorporated herein by reference to Exhibit 24 to the Schedule 13G filed by FMR LLC on January 31, 2023, accession number: 0000315066-23-000038.

Exhibit Information

Please see Exhibit 99 for 13d-1(k) (1) agreement.

FAQ

How much of Omada Health (OMDA) does FMR LLC now own?

FMR LLC reports beneficial ownership of 5,600,662 shares, equal to 10.0 % of Omada Health’s outstanding common stock.

Is the Fidelity stake considered passive or active?

The Schedule 13G was filed under Rule 13d-1(b), indicating a passive investment intent.

Does FMR share voting power over the OMDA shares?

No. The filing shows sole voting and dispositive power over all 5.6 million shares; shared power is 0.

Who else is listed as a beneficial owner in the filing?

Abigail P. Johnson, chair & CEO of Fidelity, is deemed a co-reporting beneficial owner of the same shares.

What are the key dates in the Schedule 13G?

Event date triggering the filing: 06/30/2025; filing signature date: 07/07/2025.

Does the document contain Omada Health’s financial results?

No. The Schedule 13G is strictly an ownership disclosure and includes no earnings or revenue data.