Semtech insider sells 5,321 shares at $165

A Semtech Corp director sold 5,321 common shares on September 16, 2026 and now reports no direct holdings.

Rhea-AI Filing Summary

SEMTECH CORP (SMTC) director Rodolpho C. Cardenuto reported selling 5,321 shares of common stock on September 16, 2026 in an open-market or private transaction. The weighted-average sale price was $165.0025 per share, with individual sale prices ranging from $165.00 to $165.03. Following this transaction, he reported holding no shares of Semtech common stock directly. No Rule 10b5-1 trading plan is reported for this sale.

Insider Trade Summary

Net Seller: 5,321 shares

Net Sell 1 txn

Insider Cardenuto Rodolpho C

Role Director

Sold 5,321 shs ($878K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	5,321	$165.0025	$878K

Holdings After Transaction: Common Stock — 0 shares (Direct)

Footnotes (1)

1. F1. The price represents the weighted average of these sales. The prices ranged from $165.00 to $165.030. Price and share details are available upon request.

Key Figures

Shares sold: 5,321 shares Weighted-average sale price: $165.0025 per share Sale price range: $165.00 to $165.03 per share +1 more

4 metrics

Shares sold 5,321 shares Common stock sale reported for September 16, 2026

Weighted-average sale price $165.0025 per share Average price for reported sale transactions on September 16, 2026

Sale price range $165.00 to $165.03 per share Range of prices for individual trades within the reported sale

Shares held after transaction 0 shares Direct ownership of Semtech common stock after the September 16, 2026 sale

Key Terms

weighted average, open market or private transaction, beneficial ownership

3 terms

weighted average financial

"The price represents the weighted average of these sales."

A weighted average is a way of calculating an overall number when some items matter more than others by giving each item a different level of importance, or weight. Investors use weighted averages to combine figures like prices, returns or earnings so the result reflects the size or significance of each part — like grading a class where a final exam counts more than a quiz, producing a score that better represents true performance.

open market or private transaction financial

"Sale in open market or private transaction"

beneficial ownership financial

"Price and share details are available upon request."

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.

FAQ

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

What insider transaction did SEMTECH CORP (SMTC) report for Rodolpho C. Cardenuto?

Rodolpho C. Cardenuto reported a sale of 5,321 shares of Semtech common stock on September 16, 2026 in an open-market or private transaction, and now reports no directly held shares following this transaction.

At what price were the SMTC shares sold in this Form 4 filing?

The reported sale used a weighted-average price of $165.0025 per share. According to the footnote, individual sale prices ranged from $165.00 to $165.03, and detailed price and share breakdowns are available upon request.

How many SMTC shares does Rodolpho C. Cardenuto hold after this reported sale?

After the reported sale of 5,321 shares, Rodolpho C. Cardenuto shows 0 shares of Semtech common stock held directly, based on the post-transaction ownership figure in the filing.

Was the SMTC insider sale made under a Rule 10b5-1 trading plan?

No. The filing’s Rule 10b5-1 checkbox is not marked as affirmative, and there is no indication in the footnotes that the September 16, 2026 sale was made under a Rule 10b5-1 trading plan.

What does the footnote in the SMTC Form 4 say about the reported sale price?

The footnote states the reported price is a weighted average of multiple sales, with prices ranging from $165.00 to $165.03, and that detailed price and share information for each trade is available from the reporting person upon request.

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

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Available on EDGAR 09/18/2026 - 04:03 PM Accepted by SEC EDGAR 09/18/2026 - 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).

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^*

Cardenuto Rodolpho C

(Last) (First) (Middle)

200 FLYNN RD.

(Street)

CAMARILLO CALIFORNIA 93012

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/16/2026

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	09/16/2026		S		5,321	D	$165.0025(1)	0	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. The price represents the weighted average of these sales. The prices ranged from $165.00 to $165.030. Price and share details are available upon request.

Remarks:

	/s/Rodolpho C Cardenuto by Mark Lin under Power of Attorney dated October 6, 2023 (Copy On File)	09/18/2026
	** 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)