Lattice SVP sells 2,039 shares under 10b5-1 plan

LSCC’s SVP of R&D reported PRSU vesting, tax-withholding share dispositions, and a small 10b5-1 plan sale of common stock.

Rhea-AI Filing Summary

LATTICE SEMICONDUCTOR CORP (LSCC) reported insider equity activity by Pravin Desale, SVP, R&D. On September 11, 2026, he acquired 8,713 shares of common stock upon vesting of performance-based restricted stock units, with no purchase price. That same day, a total of 5,303 shares was withheld and retained by the company to cover tax withholding obligations related to restricted stock unit vesting at $119.76 per share. On September 14, 2026, he sold 2,039 shares of common stock at $111.83 per share in an open-market or private transaction conducted under a Rule 10b5-1 trading plan adopted or modified on February 18, 2026.

Insider Trade Summary 10b5-1

Net Seller: 2,039 shares

Net Sell 4 txns

Insider Desale Pravin

Role SVP, R&D

Sold 2,039 shs ($228K)

Type	Security	Shares	Price	Value
Sale	Common Stock F4	2,039	$111.83	$228K
Tax Withholding	Common Stock F1	869	$119.76	$104K
Grant/Award	Common Stock F2, F3	8,713	$0.00	$0.00
Tax Withholding	Common Stock F1	4,434	$119.76	$531K

Holdings After Transaction: Common Stock — 73,456 shares (Direct)

Footnotes (4)

1. F1. These shares were retained by the Issuer in order to meet the tax withholding obligations of the Reporting Person in connection with the vesting of an installment of the restricted stock units. The amount retained by the Issuer was not in excess of the amount of the tax liability.
2. F2. Represents shares issued upon achievement of the performance criteria of performance based restricted stock units (PRSUs) granted to the Reporting Person on September 11, 2023. These PRSUs vested on September 11, 2026.
3. F3. Restricted Stock Units (RSUs) - no purchase price for this transaction.
4. F4. The transaction indicated was conducted under an approved 10b5-1 Plan, adoption modification date of referenced 10b5-1(c) plan is: 02-18-2026.

Key Figures

Shares sold: 2,039 shares Sale price per share: $111.83 per share PRSUs vested into shares: 8,713 shares +3 more

6 metrics

Shares sold 2,039 shares Common stock sale on September 14, 2026 by SVP, R&D

Sale price per share $111.83 per share Price for 2,039 shares of common stock sold on September 14, 2026

PRSUs vested into shares 8,713 shares Shares issued from performance based restricted stock units vested on September 11, 2026

Shares withheld for taxes 5,303 shares Total RSU-related shares retained by issuer on September 11, 2026

Tax-withholding price $119.76 per share Price used for 5,303 shares withheld to meet tax obligations on September 11, 2026

10b5-1 plan adoption/modification date February 18, 2026 Plan governing the September 14, 2026 stock sale

Key Terms

Rule 10b5-1 Plan, Restricted Stock Units (RSUs), performance based restricted stock units (PRSUs), tax withholding obligations

4 terms

Rule 10b5-1 Plan regulatory

"The transaction indicated was conducted under an approved 10b5-1 Plan"

A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.

Restricted Stock Units (RSUs) financial

"Restricted Stock Units (RSUs) - no purchase price for this transaction"

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

performance based restricted stock units (PRSUs) financial

"Represents shares issued upon achievement of the performance criteria of PRSUs"

tax withholding obligations financial

"retained by the Issuer in order to meet the tax withholding obligations"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did LSCC executive Pravin Desale report on this Form 4?

He reported 8,713 shares acquired from PRSU vesting on September 11, 2026, 5,303 shares withheld to cover tax obligations the same day, and a sale of 2,039 shares of common stock on September 14, 2026 under a Rule 10b5-1 plan.

How many LSCC shares did Pravin Desale sell and at what price?

He sold 2,039 shares of LATTICE SEMICONDUCTOR CORP common stock on September 14, 2026 at a price of $111.83 per share in a sale described as an open-market or private transaction.

What equity awards vested for LSCC’s Pravin Desale on September 11, 2026?

On September 11, 2026, 8,713 shares were issued to him upon achievement of performance criteria for performance based restricted stock units (PRSUs) granted on September 11, 2023; these vested without any purchase price as restricted stock units.

How many LSCC shares were withheld to cover Pravin Desale’s taxes?

A total of 5,303 shares of LSCC common stock (two transactions of 869 and 4,434 shares) was retained by the issuer on September 11, 2026 to meet his tax withholding obligations related to restricted stock unit vesting.

Was Pravin Desale’s LSCC stock sale made under a Rule 10b5-1 plan?

Yes. The September 14, 2026 sale of 2,039 shares is noted as conducted under an approved Rule 10b5-1 Plan, with the adoption or modification date of that plan disclosed as February 18, 2026.

Does the Form 4 state the price used for the LSCC tax-withholding share dispositions?

Yes. The 5,303 shares withheld to cover tax obligations on September 11, 2026 are reported at $119.76 per share, and the filing notes that the amount retained was not in excess of the related tax liability.

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

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Available on EDGAR 09/15/2026 - 02:08 PM Accepted by SEC EDGAR 09/15/2026 - 02:07 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Desale Pravin

(Last) (First) (Middle)

5555 NE MOORE COURT

(Street)

HILLSBORO OREGON 97124

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
LATTICE SEMICONDUCTOR CORP [ LSCC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, R&D

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/11/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/11/2026		F(1)		869	D	$119.76	71,216	D
Common Stock	09/11/2026		A		8,713(2)	A	$0(3)	79,929	D
Common Stock	09/11/2026		F(1)		4,434	D	$119.76	75,495	D
Common Stock	09/14/2026		S(4)		2,039	D	$111.83	73,456	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. These shares were retained by the Issuer in order to meet the tax withholding obligations of the Reporting Person in connection with the vesting of an installment of the restricted stock units. The amount retained by the Issuer was not in excess of the amount of the tax liability.

2. Represents shares issued upon achievement of the performance criteria of performance based restricted stock units (PRSUs) granted to the Reporting Person on September 11, 2023. These PRSUs vested on September 11, 2026.

3. Restricted Stock Units (RSUs) - no purchase price for this transaction.

4. The transaction indicated was conducted under an approved 10b5-1 Plan, adoption modification date of referenced 10b5-1(c) plan is: 02-18-2026.

	/s/ Tracy Feanny, Attorney in Fact For: Pravin Desale	09/15/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)