Bialecki Andrew 4

What Happened

• Andrew Bialecki, Klaviyo's CEO, converted Series B derivative securities into common stock and sold 200,000 shares in the open market on March 24, 2026. The sale generated approximately $3,634,000 at a weighted average price of $18.17 per share. The filing also records related conversion(s) of derivative securities (Series B) with no cash proceeds.

Key Details

• Transaction date: 2026-03-24 (Form filed 2026-03-26; timely)
• Open-market sale: 200,000 shares at a weighted average price of $18.17; prices in the block ranged from $17.77 to $18.65 per share (total ≈ $3,634,000). The filer can provide a breakdown of shares sold at each price upon request (footnote F3).
• Conversion: Series B common stock is convertible into Series A common stock (footnote F2); the filing shows conversion(s) of 200,000-share derivative positions associated with the transactions.
• Plan/authorization: Sale effected under a Rule 10b5-1 trading plan adopted May 20, 2025 (footnote F1).
• Trust holdings: Several shares are noted as held in related trusts (footnotes F4–F6); the Reporting Person disclaims beneficial ownership of those trust-held shares except to the extent of any pecuniary interest.
• Shares owned after the transaction: Not specified in the provided filing.

Context

• The filing documents a conversion of derivative (Series B) shares into common stock followed by an open-market sale; this is a common way insiders monetize converted or vested shares. The transaction was executed under a pre-established 10b5-1 plan, which typically indicates a pre-set selling schedule rather than opportunistic timing. No implication about future company performance is intended—this is a factual report of insider activity.