---
schema_version: "secwatch.filing_event.v1"
accession: "0001835830-25-000114"
form_type: "8-K"
ticker: "KVYO"
cik: "0001835830"
company_name: "Klaviyo, Inc."
filed_at: "2025-12-02T23:59:59+00:00"
generated_at: "2026-05-16T15:46:16.882755+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Klaviyo reports record BFCM: $3.8B KAV (+27% YoY); 20K customers had best sales day

## Summary
- Klaviyo Attributed Value exceeded $3.8B, up 27% YoY; 22.7B messages sent (+25% YoY).
- Nearly 20,000 customers hit their best sales day ever during the five-day BFCM weekend.
- Consumer spending on Klaviyo platform rose 11% YoY even as discount rates fell 10% YoY.
- Revenue from repeat customers grew 13.5% YoY, outpacing new buyer revenue.
- AI-driven product recommendations usage surged 45% YoY; revenue from them up 71% YoY.

## SEC filing metadata
- accession: 0001835830-25-000114
- form_type: 8-K
- ticker: KVYO
- cik: 0001835830
- company_name: Klaviyo, Inc.
- filed_at: 2025-12-02T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1835830/000183583025000114/0001835830-25-000114-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1835830/000183583025000114/kvyo-20251202.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001835830-25-000114
- JSON: https://secwatch.observer/filing/0001835830-25-000114.json
- Plain text: https://secwatch.observer/filing/0001835830-25-000114.txt

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