---
schema_version: "secwatch.filing_event.v1"
accession: "0001517413-25-000350"
form_type: "8-K"
ticker: "FSLY"
cik: "0001517413"
company_name: "Fastly, Inc."
filed_at: "2025-12-17T23:59:59+00:00"
generated_at: "2026-05-16T12:54:46.068765+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Fastly closes $20M add-on convertible note offering; enters additional capped call transactions

## Summary
- Initial purchasers exercised option for additional $20.0M of 0% Convertible Senior Notes due 2030; closed Dec 17, 2025.
- Net proceeds of ~$19.4M; used ~$2.0M for Additional Capped Call Transactions.
- Capped call cover shares underlying Option Notes; cap price initially $23.04/share (100% premium over Dec 4 close).
- Up to 15,624,990 shares of Class A common stock issuable upon conversion based on initial rate.

## SEC filing metadata
- accession: 0001517413-25-000350
- form_type: 8-K
- ticker: FSLY
- cik: 0001517413
- company_name: Fastly, Inc.
- filed_at: 2025-12-17T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01, 8.01, 2.03, 3.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1517413/000151741325000350/0001517413-25-000350-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1517413/000151741325000350/fsly-20251215.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001517413-25-000350
- JSON: https://secwatch.observer/filing/0001517413-25-000350.json
- Plain text: https://secwatch.observer/filing/0001517413-25-000350.txt

## Key facts
- Equity Issuances
  Fastly, Inc. issued convertible note to Initial Purchasers.
  - Security: convertible note
  - Purchaser: Initial Purchasers
  source text: The Option Notes (as defined below in Item 8.01) were issued to the Initial Purchasers (as defined below in Item 8.01) in reliance upon Section 4(a)(2) of the Securities Act of 1933, as amended (the “Securities Act”), in transactions not involving any public offering.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1517413/000151741325000350/0001517413-25-000350-index.htm
- Equity Issuances
  Fastly, Inc. issued maximum of 15,624,990 shares of common stock to Initial Purchasers.
  - Security: common stock
  - Shares: maximum of 15,624,990 shares
  - Purchaser: Initial Purchasers
  source text: A maximum of 15,624,990 shares of the Company’s Class A Common Stock may be issued upon conversion of the Notes (as defined below in Item 8.01), based on the initial maximum conversion rate of 86.8055 shares of the Company’s Class A Common Stock per $1,000 principal amount of Notes, which is subject to customary anti-dilution adjustment provisions.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1517413/000151741325000350/0001517413-25-000350-index.htm

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