---
schema_version: "secwatch.filing_event.v1"
accession: "0001835830-23-000016"
form_type: "8-K"
ticker: "KVYO"
cik: "0001835830"
company_name: "Klaviyo, Inc."
filed_at: "2023-11-29T23:59:59+00:00"
generated_at: "2026-06-07T20:28:06.318264+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Klaviyo reports BFCM 2023 peak of 11.6M msgs/min and $60M KAV/hr

## Summary
- Brands using Klaviyo sent over 11.6M messages per minute at peak and generated nearly $60M in Klaviyo Attributed Value per hour.
- 73% of Klaviyo-driven purchases were from repeat customers; 47% of all BFCM purchases were repeat.
- 616M messages sent included AI-personalized product recommendations; top discount was 30%, 20%, 25%.
- Most active marketing hour: 9-10 AM ET on Black Friday with over 376M messages.

## SEC filing metadata
- accession: 0001835830-23-000016
- form_type: 8-K
- ticker: KVYO
- cik: 0001835830
- company_name: Klaviyo, Inc.
- filed_at: 2023-11-29T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1835830/000183583023000016/0001835830-23-000016-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1835830/000183583023000016/kvyo-20231129.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001835830-23-000016
- JSON: https://secwatch.observer/filing/0001835830-23-000016.json
- Plain text: https://secwatch.observer/filing/0001835830-23-000016.txt

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