---
schema_version: "secwatch.filing_event.v1"
accession: "0001835830-25-000098"
form_type: "8-K"
ticker: "KVYO"
cik: "0001835830"
company_name: "Klaviyo, Inc."
filed_at: "2025-08-15T23:59:59+00:00"
generated_at: "2026-05-17T12:29:39.768769+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Summit Partners entities sell 6.5M shares of Klaviyo at $30.01 each in secondary offering

## Summary
- Selling stockholders (Summit Partners affiliates) offer 6.5M shares at $30.01; underwriter has 30-day option for 975K additional shares.
- Klaviyo receives no proceeds from the secondary offering.
- Offering expected to close on or about August 21, 2025; Barclays acts as sole underwriter.
- Secondary sale represents a liquidation event for Summit Partners, not a capital raise for the company.
- Shares registered on Form S-3 filed February 19, 2025; pricing announced August 15, 2025.

## SEC filing metadata
- accession: 0001835830-25-000098
- form_type: 8-K
- ticker: KVYO
- cik: 0001835830
- company_name: Klaviyo, Inc.
- filed_at: 2025-08-15T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1835830/000183583025000098/0001835830-25-000098-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1835830/000183583025000098/kvyo-20250813.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001835830-25-000098
- JSON: https://secwatch.observer/filing/0001835830-25-000098.json
- Plain text: https://secwatch.observer/filing/0001835830-25-000098.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.