Andrew Bialecki, Co-Chief Executive Officer of Klaviyo, Inc. (NYSE: KVYO), sold 200,000 shares of Series A Common Stock on March 24, 2026, receiving $3.634 million in proceeds. The shares were disposed of at a weighted average price of $18.17, with individual trade prices ranging from $17.77 to $18.65, according to a Form 4 filing with the Securities and Exchange Commission.
The filing states the sale was carried out under a Rule 10b5-1 trading plan that Bialecki adopted on May 20, 2025. On the same date that the sale was executed, Bialecki also recorded the acquisition of 200,000 shares of Series A Common Stock upon conversion of Series B Common Stock.
After completing the transaction, Bialecki no longer holds any Series A Common Stock directly. The filing discloses his indirect holdings of Series B Common Stock through several trusts and family holdings: The Andrew P. Bialecki Grantor Retained Annuity Trust I of 2023 holds 7,517,410 shares; The Elizabeth L. Bialecki Irrevocable GST Trust of 2023 holds 517,006 shares; The Andrew P. Bialecki Irrevocable GST Trust of 2023 holds 517,006 shares; and shares held by spouse total 43,218.
The sale occurs against a backdrop of a notable share-price decline for Klaviyo - the company's stock has fallen about 40% over the past six months. That decrease contrasts with InvestingPro analysis cited in the filing, which indicates the stock was trading at $19.03 and that InvestingPro's Fair Value estimate stood at $22.89, implying the shares may be undervalued at the then-current price.
Separately, Klaviyo's board has approved a $500 million share repurchase program, the company's first such program. The board authorized an immediate $100 million accelerated share repurchase as part of the larger plan. The company noted that the full program represents roughly 10% of Klaviyo's market capitalization. William Blair analyst Arjun Bhatia commented that the repurchase initiative signals confidence in the company's financial health.
In product developments, Klaviyo introduced Composer, an AI-powered marketing tool intended to generate campaigns from text prompts. Composer is described as able to produce campaigns that include audience segments and multi-channel messaging rapidly. The tool also analyzes existing marketing sequences to identify points where customer engagement drops.
Taken together, the insider transaction, the substantial repurchase program and the launch of Composer are the principal items disclosed in the filings and company announcements. For investors seeking additional valuation context, the InvestingPro analysis cited in the filing provides a Fair Value estimate for the shares.