History and disclosed funding
Deals, funding and ownership disclosures, as reported at the time.
30 Jun 2026
BlackRock shareholding
As reported5.3% of reported class
BlackRock reported beneficial ownership of 7,462,388 Klaviyo shares, or 5.3% of the reported class, as at 30 June 2026. The filing was signed on 29 July.
Klaviyo, Inc. (NYSE: KVYO)
SEC filing ↗ (opens in a new tab)15 Apr 2026
Summit Partners ownership disclosure
Proxy disclosure10.9% of voting power
Klaviyo’s 2026 proxy reports Summit Partners affiliates holding 18,852,778 Series B shares: 11.9% of Series B and 10.9% of total voting power as at 15 April 2026.
Klaviyo, Inc. (NYSE: KVYO)
SEC filing ↗ (opens in a new tab)2026-04-15
Shopify beneficial ownership disclosure
Proxy disclosure17.4% of voting power
Klaviyo’s 2026 proxy attributes 32,716,282 Series B shares to Shopify Strategic Holdings 3 LLC, representing 18.8% of Series B and 17.4% of total voting power as at 15 April 2026. Beneficial ownership includes exercisable rights, not only shares already held.
Klaviyo, Inc. (NYSE: KVYO)
SEC filing ↗ (opens in a new tab)
View 2 earlier disclosures
2026
Capital International Investors shareholding
As reported9.3% in this filing
Capital International Investors’ 2026 Schedule 13G reports beneficial ownership of 12,788,846 Klaviyo shares, or 9.3% of the 137,856,147 shares it believed outstanding. The percentage uses the filing’s stated denominator.
Klaviyo, Inc. (NYSE: KVYO)
SEC filing ↗ (opens in a new tab)Jul 2022
Shopify strategic investment
Strategic investmentApprox. US$100 million
Klaviyo’s IPO registration statement records an approximately US$100 million investment by Shopify Strategic in 2022. It also discloses an option to buy additional shares; that option was unexercised at the time of the filing.
Klaviyo, Inc. (NYSE: KVYO)
SEC filing ↗ (opens in a new tab)
