Semtech CFO sells 683 shares after RSU exercise

Semtech’s CFO exercised restricted stock units and sold a portion of the resulting shares under a pre-arranged Rule 10b5-1 trading plan.

Rhea-AI Filing Summary

SEMTECH CORP (SMTC) reports that EVP and CFO Mark Lin exercised 2,348 restricted stock units into common shares on September 10, 2026. Of the resulting shares, 1,195 were delivered or withheld to cover the exercise price or tax liability at $163.94 per share, and 683 shares were sold at $159.90 per share under a Rule 10b5-1 trading plan. Following the conversion, Lin held 14,091 restricted stock units directly.

Insider Trade Summary 10b5-1

Exercise and sale activity reported; no spread calculated

Exercise and Sale 4 txns

Insider Lin Mark

Role EVP and CFO

Sold 683 shs ($109K)

Approx. gross sale proceeds $109K

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit F2, F3	2,348	$0.00	$0.00
Exercise	Common Stock	2,348	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	1,195	$163.94	$196K
Sale	Common Stock F1	683	$159.90	$109K

Holdings After Transaction: Restricted Stock Unit — 14,091 contracts (Direct); Common Stock — 35,366 shares (Direct)

Footnotes (3)

1. F1. This transaction is pursuant to a Rule 10b5-1 trading plan adopted by Mr. Lin on June 23, 2025.
2. F2. Each stock unit represents the contingent right to receive one share of Semtech common stock.
3. F3. One third of this grant vested on March 10, 2026 and the remainder of this grant vests in eight quarterly installments beginning on June 10, 2026.

Key Figures

Restricted stock units converted: 2,348 units Shares delivered or withheld: 1,195 shares Shares sold: 683 shares +4 more

7 metrics

Restricted stock units converted 2,348 units Exercised into Semtech common stock on September 10, 2026

Shares delivered or withheld 1,195 shares Used for payment of exercise price or tax liability on September 10, 2026

Shares sold 683 shares Sale of Semtech common stock on September 10, 2026

Price for tax or exercise payment shares $163.94 per share Valuation for 1,195 shares delivered or withheld

Sale price $159.90 per share Price for 683 Semtech common shares sold

Restricted stock units held after conversion 14,091 units Directly held by Mark Lin following the September 10, 2026 transaction

Rule 10b5-1 plan adoption date June 23, 2025 Trading plan under which the 683-share sale was executed

Key Terms

Restricted Stock Unit, Rule 10b5-1 trading plan, contingent right, quarterly installments

4 terms

Restricted Stock Unit financial

"Each stock unit represents the contingent right to receive one share"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

Rule 10b5-1 trading plan regulatory

"This transaction is pursuant to a Rule 10b5-1 trading plan adopted"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

contingent right financial

"represents the contingent right to receive one share of Semtech"

quarterly installments financial

"the remainder of this grant vests in eight quarterly installments"

FAQ

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

What insider transactions did Semtech (SMTC) report for CFO Mark Lin on September 10, 2026?

On September 10, 2026, Mark Lin exercised 2,348 restricted stock units into Semtech common shares, had 1,195 shares delivered or withheld to cover the exercise price or tax liability, and sold 683 shares in a separate transaction.

At what prices were the Semtech (SMTC) shares involved in Mark Lin’s Form 4 transactions valued?

In the September 10, 2026 transactions, 1,195 Semtech shares were delivered or withheld at $163.94 per share to cover the exercise price or tax liability, and 683 shares were sold at $159.90 per share.

How many restricted stock units does Semtech’s (SMTC) CFO hold after the reported Form 4 transactions?

After the September 10, 2026 conversion, Mark Lin holds 14,091 restricted stock units directly, each representing the contingent right to receive one share of Semtech common stock, subject to the applicable vesting terms.

Were Semtech (SMTC) CFO Mark Lin’s share sales made under a Rule 10b5-1 trading plan?

Yes. The sale of 683 shares of Semtech common stock on September 10, 2026 was made pursuant to a Rule 10b5-1 trading plan adopted by Mark Lin on June 23, 2025, as disclosed in the footnotes.

What role does Mark Lin hold at Semtech (SMTC) in the Form 4 filing?

In this Form 4, Mark Lin is identified as Semtech’s Executive Vice President and Chief Financial Officer, and the filing reports his transactions in restricted stock units and common stock on September 10, 2026.

How were the remaining restricted stock units for Semtech (SMTC) CFO scheduled to vest?

The filing states that one third of the referenced restricted stock unit grant vested on March 10, 2026, and the remainder vests in eight quarterly installments beginning on June 10, 2026.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 09/14/2026 - 04:02 PM Accepted by SEC EDGAR 09/14/2026 - 04:01 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^*

Lin Mark

(Last) (First) (Middle)

200 FLYNN RD.

(Street)

CAMARILLO CALIFORNIA 93012-8790

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SEMTECH CORP [ SMTC ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP and CFO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/10/2026

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	09/10/2026		M		2,348	A	$0	37,244	D
Common Stock	09/10/2026		F		1,195	D	$163.94	36,049	D
Common Stock	09/10/2026		S(1)		683	D	$159.9	35,366	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
Restricted Stock Unit	(2)	09/10/2026		M			2,348	(2)	(3)	Common Stock	2,348	$0	14,091	D

Explanation of Responses:

1. This transaction is pursuant to a Rule 10b5-1 trading plan adopted by Mr. Lin on June 23, 2025.

2. Each stock unit represents the contingent right to receive one share of Semtech common stock.

3. One third of this grant vested on March 10, 2026 and the remainder of this grant vests in eight quarterly installments beginning on June 10, 2026.

Remarks:

	/s/Mark Lin	09/14/2026
	** 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)