Butler Dean Warren 4

What Happened

• Dean Butler, Senior Vice President and Chief Financial Officer of Silicon Laboratories, had 6,291 shares withheld to cover taxes upon vesting of a previously reported equity award. The withholding was recorded as a disposal at $216.59 per share, totaling approximately $1,362,568.
• This was a tax-withholding disposition (code F) tied to vesting — a routine administrative action rather than an open-market sale or purchase.

Key Details

• Transaction date: 2026-05-15; Filing date (Form 4): 2026-05-19 (filed within the SEC’s two-business-day window, timely).
• Price per share: $216.59; Shares withheld/disposed: 6,291; Total value: ~$1,362,568.
• Shares owned after the transaction: not specified in the provided filing excerpt.
• Footnote: F1 — shares were withheld to pay taxes upon vesting of a previously reported equity award.
• Transaction code: F = payment of exercise price or tax liability via share withholding.

Context

• This was a cashless/tax-withholding action: some shares from a vesting award were retained by the company to satisfy withholding tax obligations. Such withholding is common and generally administrative in nature, and does not necessarily indicate the insider’s view on the company’s stock.
• No 10b5-1 plan, gift, or open-market sale was reported in this transaction.