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  4. [Form 4] LITTELFUSE INC /DE Insider Trading Activity

Littelfuse (LFUS) EVP exercises 16,839 options, sells stock around $325

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

Littelfuse executive Stafford Ryan K, Executive VP, CLO & Corporate Secretary, exercised stock options for 16,839 shares of common stock at $132.08 per share on 02/02/2026. On the same day, he sold 16,839 shares in several market transactions at prices around $325–$327 per share.

After these transactions, he continued to directly own 28,591 shares of Littelfuse common stock. The option for 16,839 shares had vested in three equal annual installments beginning one year after its April 23, 2020 grant date.

Positive

  • None.

Negative

  • None.
Insider Stafford Ryan K
Role Executive VP, CLO & Corp Sec
Sold 16,839 shs ($5.48M)
Type Security Shares Price Value
Exercise Stock Option (right to buy) 16,839 $0.00 --
Exercise Common Stock 16,839 $132.08 $2.22M
Sale Common Stock 109 $327.15 $36K
Sale Common Stock 623 $326.45 $203K
Sale Common Stock 16,107 $325.19 $5.24M
Holdings After Transaction: Stock Option (right to buy) — 0 shares (Direct); Common Stock — 45,430 shares (Direct)
Footnotes (1)
  1. The shares were sold in multiple transactions at prices ranging from $327.01 to $327.55, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer. The shares were sold in multiple transactions at prices ranging from $326.06 to $326.93, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer. The shares were sold in multiple transactions at prices ranging from $325.00 to $325.99, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer. The option for 16,839 shares vested in increments of one third annually beginning on the first anniversary of the April 23, 2020 date of grant.
Form 4 Insider Transactions: What Each Field Means →
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*
Stafford Ryan K
(Last) (First) (Middle)
6133 NORTH RIVER ROAD, SUITE 500
(Street)
ROSEMONT IL 60018
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
LITTELFUSE INC /DE [ LFUS ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Executive VP, CLO & Corp Sec
3. Date of Earliest Transaction (Month/Day/Year)
02/02/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
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 02/02/2026 M 16,839 A $132.08 45,430 D
Common Stock 02/02/2026 S 109 D $327.15(1) 45,321 D
Common Stock 02/02/2026 S 623 D $326.45(2) 44,698 D
Common Stock 02/02/2026 S 16,107 D $325.19(3) 28,591 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
Stock Option (right to buy) $132.08 02/02/2026 M 16,839 (4) 04/23/2027 Common Stock 16,839 $0 0 D
Explanation of Responses:
1. The shares were sold in multiple transactions at prices ranging from $327.01 to $327.55, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
2. The shares were sold in multiple transactions at prices ranging from $326.06 to $326.93, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
3. The shares were sold in multiple transactions at prices ranging from $325.00 to $325.99, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
4. The option for 16,839 shares vested in increments of one third annually beginning on the first anniversary of the April 23, 2020 date of grant.
Remarks:
/s/Mark J. Reyes, Power of Attorney 02/04/2026
** 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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Stafford Ryan K report at Littelfuse (LFUS)?

Stafford Ryan K reported exercising options for 16,839 Littelfuse common shares at $132.08 per share, then selling 16,839 shares in multiple trades around $325–$327 on 02/02/2026. These trades reflect an option exercise followed by open-market sales.

How many Littelfuse (LFUS) shares does Stafford Ryan K own after this Form 4?

After the reported transactions, Stafford Ryan K directly owns 28,591 shares of Littelfuse common stock. This figure comes after exercising 16,839 stock options and selling 16,839 shares in several trades on 02/02/2026 at prices slightly above $325 per share.

What stock option did Stafford Ryan K exercise in the Littelfuse (LFUS) Form 4?

He exercised a stock option covering 16,839 Littelfuse common shares at an exercise price of $132.08 per share. The option vested in one-third increments annually, beginning on the first anniversary of its April 23, 2020 grant date, and is now fully exercised.

At what prices were the Littelfuse (LFUS) shares sold in this insider trade?

The sales occurred in multiple transactions, with weighted average prices of $327.15, $326.45, and $325.19 per share. Footnotes explain that individual trade prices ranged from $325.00 to $327.55, and full breakdowns are available upon request from relevant parties.

Is Stafford Ryan K a major shareholder or just an officer of Littelfuse (LFUS)?

The Form 4 identifies Stafford Ryan K as an officer of Littelfuse, serving as Executive VP, Chief Legal Officer and Corporate Secretary, but not as a director or 10% owner. The filing describes his role and confirms the transactions involve shares he holds directly.

What is the significance of the vesting terms noted in the Littelfuse (LFUS) Form 4?

The filing states the 16,839-share option vested in one-third increments annually starting one year after April 23, 2020. This shows the award was earned over time, with each tranche becoming exercisable in successive years before the final exercise reported here.