BOSTON, March 6, 2026, 09:37 EST
- A regulatory filing revealed that Klaviyo co-CEO Andrew Bialecki unloaded 200,000 shares.
- Klaviyo’s sale comes just after the company signed off on a $500 million share buyback plan.
- Shares climbed out of the gate Friday morning.
This week, Klaviyo co-CEO Andrew Bialecki unloaded 200,000 shares of the marketing software company, a U.S. securities filing shows.
The trade comes at a tricky time. Klaviyo’s been working to reassure investors following a rocky spell for several fresh software IPOs, and any insider moves—rightly or wrongly—often get interpreted as signals.
This follows just days after Klaviyo’s board signed off on a $500 million share buyback plan—a decision that can help prop up the stock, but ties up cash that might have been used for product development or sales efforts. 1
Bialecki unloaded the shares on March 3, converting 200,000 Series B shares into Series A right before the sale, according to the filing. The stock moved in two chunks at weighted averages of $18.86 and $17.90 per share, netting roughly $3.73 million. The transactions ran through a Rule 10b5-1 plan, the pre-set insider trading strategy, the filing noted. 2
Klaviyo earlier disclosed that Bialecki set up a pre-arranged trading plan that covers potential sales of as many as 8 million shares. Any actual stock sales would show up in Form 4 filings. 3
Klaviyo’s chief legal officer Edmond Landon unloaded 15,093 shares on March 5, fetching a weighted-average $20.16 apiece, according to a separate Form 4. The trade went through under a Rule 10b5-1 plan, the filing said. 4
Klaviyo jumped roughly 8.4% to $21.18 in early Friday trading, putting its market value around $8.3 billion.
Klaviyo’s buyback is set up through an accelerated share repurchase, or ASR—meaning a bank hands over shares right away for cash, with final pricing tied to the stock’s average over a set period. “This new authorization and accelerated share repurchase underscores the confidence” in the company’s strategy, Bialecki said in the announcement. 5
Klaviyo, a provider of marketing automation and customer data software for consumer brands, posted 2025 revenue of $1.2 billion, with $350.2 million coming in during the fourth quarter. The company also lifted its guidance for fiscal 2026 back in February. 6
The company is up against HubSpot, Braze, and Intuit’s Mailchimp for a share of marketing and customer data spending, as brands look for ways to turn website visitors into loyal customers—without relying so much on paid advertising.
Klaviyo’s top brass turned up at Morgan Stanley’s Technology, Media & Telecom Conference this week, putting on a webcast for investors. 7
But for the buyback to deliver, a few things have to line up: market conditions, steady cash generation, and the company’s ongoing fight to hold its ground in a jam-packed software sector. Those are risks spelled out in its annual filing. 8
