Klaviyo, Inc.: 10% owner Hallen Ed sold 97,482 shares

What happened

• Hallen Ed, a 10% owner, sold a total of 97,482 shares on Oct 7, 2026 in two open-market or private sales for combined proceeds of $1,696,187 (weighted average price reported $17.40). The filing also reports a gift of 17,885 shares on Oct 8, 2026 with no proceeds.

Key details

• Transaction dates and prices: sales on Oct 7, 2026 at a reported weighted average $17.40 (actual sale prices ranged from $17.00 to $17.63 and $17.03 to $17.63 across the reported lots); gift on Oct 8, 2026 at $0.00.
• Shares owned after the transactions: not disclosed in the provided filing.
• Footnotes: sales were effected under a Rule 10b5-1 trading plan adopted Jun 1, 2026; some shares are held by Hodgkins Trust and Hodgkins LLC and the reporting person disclaims Section 16 beneficial ownership except to the extent of any pecuniary interest; the gift was a bona fide gift to a donor-advised fund.
• Filing date: filed Oct 9, 2026 (reporting period Oct 7, 2026). The filing does not indicate any late-reporting designation in the provided information.

Why it may matter

• The sales were executed under a Rule 10b5-1 plan, which the filing says governed the transactions.
• The Oct 8, 2026 transfer labeled as a gift is not a market sale.
• The report lists Hallen Ed as a 10% owner, which indicates a large holder rather than an executive role per the filing.
• This filing does not show why the insider traded or why the company acted.