Vanguard Portfolio Management takes 5.43% stake in Lattice Semiconductor (LSCC)

Rhea-AI Filing Summary

Vanguard Portfolio Management reported beneficial ownership of 7,435,097 shares of Lattice Semiconductor Corp common stock, representing 5.43% of the class as of 03/31/2026. The filing shows sole voting power for 34,210 shares and sole dispositive power for 7,435,097 shares. The Schedule 13G statement, signed 04/29/2026, clarifies ownership includes securities held for Vanguard funds and managed accounts over which Vanguard Portfolio Management LLC or its affiliates exercise dispositive power.

Insights

Institutional Ownership Analyst

Vanguard holds a passive >5% stake in Lattice Semiconductor as of 03/31/2026.

Vanguard Portfolio Management reports 7,435,097 shares or 5.43% ownership, consistent with a Section 13G passive investor filing rather than an activist schedule. The filing attributes dispositive power to Vanguard and notes holdings include Vanguard funds and managed accounts.

Key items to watch in subsequent filings are any change in percentage ownership or conversion to a Schedule 13D, which would indicate active intent. Timing: ownership reported as of 03/31/2026; the statement was signed on 04/29/2026.

Governance & Proxy Specialist

Reported voting power is concentrated in dispositive control, not voting control.

The filing shows Vanguard has sole dispositive power over 7,435,097 shares but sole voting power for only 34,210 shares, implying many shares are held in fund vehicles where voting may be retained by other affiliates or clients. The statement follows SEC Release No. 34-39538 disclosure conventions for affiliated holdings.

Investors monitoring ownership dynamics should note whether future amendments change voting percentages or disclose any coordinated action; current filing characterizes the position as passive under Schedule 13G standards.

Key Figures

Beneficial ownership: 7,435,097 shares Percent of class: 5.43% Sole voting power: 34,210 shares +3 more

6 metrics

Beneficial ownership 7,435,097 shares amount beneficially owned as of 03/31/2026

Percent of class 5.43% percent of common stock class as reported

Sole voting power 34,210 shares sole power to vote or direct the vote

Sole dispositive power 7,435,097 shares sole power to dispose or direct disposition

Reporting form Schedule 13G filing type indicating passive institutional ownership

Filing signature date 04/29/2026 date signed by Head of Global Fund Administration

Key Terms

Schedule 13G, beneficial ownership, sole dispositive power, SEC Release No. 34-39538

4 terms

Schedule 13G regulatory

"Vanguard Portfolio Management reported beneficial ownership of 7,435,097 shares"

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.

beneficial ownership financial

"Amount beneficially owned: 7435097 (b) Percent of class: 5.43 %"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

sole dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 7435097"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

SEC Release No. 34-39538 regulatory

"In accordance with SEC Release No. 34-39538 (January 12, 1998), this reflects the securities beneficially owned"

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Lattice Semiconductor Corp

(Name of Issuer)

Common Stock

(Title of Class of Securities)

518415104

(CUSIP Number)

03/31/2026

(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): 518415104

1

Names of Reporting Persons

Vanguard Portfolio Management

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

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 34,210.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 7,435,097.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

7,435,097.00

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)

5.43 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by Vanguard Portfolio Management LLC and the following affiliates of Vanguard Portfolio Management LLC or business divisions of such affiliates: Vanguard Fiduciary Trust Company and Vanguard Global Advisers, LLC. This Schedule 13G includes securities held by Vanguard funds, or sleeves thereof, over which Vanguard Portfolio Management LLC exercises dispositive power, in addition to securities held by clients over which the affiliates or business divisions of such affiliates indicated above exercise dispositive and/or voting power. This Schedule 13G does not include securities, if any, beneficially owned by other subsidiaries or affiliates of Vanguard Portfolio Management LLC, or business divisions of such subsidiaries whose ownership of securities is disaggregated from that of the reporting business unit in accordance with such release.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Lattice Semiconductor Corp
(b)	Address of issuer's principal executive offices: 5555 NE Moore Court, Hillsboro, OR, 97124
Item 2.
(a)	Name of person filing: Vanguard Portfolio Management
(b)	Address or principal business office or, if none, residence: 100 Vanguard Blvd,, Malvern, PA, 19355
(c)	Citizenship: PA
(d)	Title of class of securities: Common Stock
(e)	CUSIP Number(s): 518415104
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: 7435097
(b)	Percent of class: 5.43 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 34210
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 7435097
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
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. Vanguard Portfolio Management, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein.No one other person's interest in the securities reported herein is more than 5%.
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.

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.

Vanguard Portfolio Management

Signature:	Ashley Grim
Name/Title:	Head of Global Fund Administration
Date:	04/29/2026

FAQ

What stake does Vanguard Portfolio Management report in Lattice Semiconductor (LSCC)?

Vanguard reports beneficial ownership of 7,435,097 shares, representing 5.43% of Lattice Semiconductor common stock as of 03/31/2026. The filing is a Schedule 13G reflecting passive institutional ownership.

How much voting power does Vanguard have in LSCC?

The filing states Vanguard has sole voting power over 34,210 shares and shared voting power of 0 shares. Most dispositive power relates to sale/transfer authority rather than voting authority.

What does 'sole dispositive power' mean in the filing?

It indicates Vanguard has the authority to direct the disposition of 7,435,097 shares. The Schedule 13G notes these holdings include Vanguard funds and managed accounts for which Vanguard exercises dispositive power.

What dates are relevant in this Schedule 13G filing for LSCC?

The ownership is reported as of 03/31/2026 and the filing is signed on 04/29/2026. Those dates anchor the reported share count and the filing's execution.

Does this Schedule 13G indicate activist intent by Vanguard in LSCC?

No; the filing is a Schedule 13G passive filing. It reports beneficial ownership without stating coordinated or active engagement, following the passive investor disclosure format under SEC rules.