Klaviyo, Inc.
A maker of marketing software that helps online stores send personalized email and SMS campaigns, using customer data pulled from platforms like Shopify to trigger automated messages such as cart-abandonment reminders. Founded in 2012 in Boston by Andrew Bialecki and Ed Hallen, the company takes its name from the Spanish word "clavija," a mountaineering piton — a nod to supporting businesses as they "climb the mountain" of growth.
| Holder | Schedule | % of class | Shares | Filed |
|---|---|---|---|---|
| FMR LLC | 13G/APassive | 4.7% | 6.57M | Aug 6, 2026 |
| Abigail P. Johnson | 13G/APassive | 4.7% | 6.57M | Aug 6, 2026 |
| Bialecki Andrew | 13G/APassive | 36.5% | 75.33M | Aug 5, 2026 |
| Vanguard Capital Management | 13GPassive | 5% | 7.05M | Jul 31, 2026 |
| BlackRock, Inc. | 13GPassive | 5.3% | 7.46M | Jul 29, 2026 |
| Capital International Investors | 13G/APassive | 8% | 11.70M | May 14, 2026 |
| Vanguard Portfolio Management | 13GPassive | 5.17% | 7.53M | Apr 29, 2026 |
| The Vanguard Group | 13G/APassive | 0% | 0 | Mar 27, 2026 |
| Morgan Stanley | 13G/APassive | 4.1% | 5.99M | Mar 6, 2026 |
| Shopify Strategic Holdings 3 LLC | 13D/AActivist | 18.85% | 32.03M | Nov 14, 2025 |