---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-290679"
form_type: "8-K"
ticker: "TNGX"
cik: "0001819133"
company_name: "Tango Therapeutics, Inc."
filed_at: "2025-11-21T23:59:59+00:00"
generated_at: "2026-05-16T17:41:21.304582+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Tango Therapeutics enters $100M ATM offering with Leerink, terminates Jefferies ATM program

## Summary
- New $100M at-the-market common stock sales agreement with Leerink Partners as agent, dated Nov 21, 2025.
- Agent commission of up to 3.0% of gross sales price per share sold under the agreement.
- Prior $100M Jefferies ATM program terminated effective Nov 21, 2025, with no penalties.
- Shares to be sold via at-the-market or negotiated transactions at company's discretion.

## SEC filing metadata
- accession: 0001193125-25-290679
- form_type: 8-K
- ticker: TNGX
- cik: 0001819133
- company_name: Tango Therapeutics, Inc.
- filed_at: 2025-11-21T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01, 1.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1819133/000119312525290679/0001193125-25-290679-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1819133/000119312525290679/d921087d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-290679
- JSON: https://secwatch.observer/filing/0001193125-25-290679.json
- Plain text: https://secwatch.observer/filing/0001193125-25-290679.txt

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