Form 4 for LFUS LITTELFUSE INC /DE
Accepted 2026-02-25 00:00:00 ET · period of report 2026-02-24 · accession 0001614437-26-000002 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-02-25 | 2026-02-24 | LFUS | Cerniglia Kristina A. | Dir | M - OptEx | $158.19 | +2,343 | 6,598 | +55% | +$370.6K |
| D | 2026-02-25 | 2026-02-24 | LFUS | Cerniglia Kristina A. | Dir | S - Sale+OE | $368.38 | -2,343 | 4,255 | -36% | -$863.1K |
| DM | 2026-02-25 | 2026-02-24 | LFUS | Cerniglia Kristina A. | Dir | M - OptEx | $0.00 | -2,343 | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-02-24 | M | A | 911 | $199.24 | 5,166 | D | — | — | |
| 2 | Common | Common Stock | 2026-02-24 | M | A | 1,432 | $132.08 | 6,598 | D | — | — | |
| 3 | Common | Common Stock | 2026-02-24 | S | D | 2,343 | $368.38 | 4,255 | D | — | — | (F1) This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 18, 2025. |
| 4 | Derivative | Stock Option (right to buy) | 2026-02-24 | M | D | 1,432 | $0.00 | 0 | D | $132.08 · — to 2027-04-23 | 1,432 Common Stock | (F3) The option for 1,432 shares vested in increments of one third annually beginning on the first anniversary of the April 23, 2020 date of grant. |
| 5 | Derivative | Stock Option (right to buy) | 2026-02-24 | M | D | 911 | $0.00 | 0 | D | $199.24 · — to 2026-04-26 | 911 Common Stock | (F2) The option for 911 shares vested in increments of one third annually beginning on the first anniversary of the April 26, 2019 date of grant. |