---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-137032"
form_type: "8-K"
ticker: "TNGX"
cik: "0001819133"
company_name: "Tango Therapeutics, Inc."
filed_at: "2025-06-06T23:59:59+00:00"
generated_at: "2026-05-19T18:33:09.484687+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Tango Therapeutics shareholders approve doubling authorized shares to 400M, elect new director

## Summary
- Shareholders approved amendment to increase authorized common stock from 200M to 400M shares (85.8M for, 11M against).
- Lesley Ann Calhoun elected as Class I director with 73.1M votes for, 10.5M withheld.
- Ratification of PricewaterhouseCoopers as auditor for FY2025 passed with 96.7M for.
- Non-binding say-on-pay passed; annual advisory vote frequency approved (73M votes for one year).

## SEC filing metadata
- accession: 0001193125-25-137032
- form_type: 8-K
- ticker: TNGX
- cik: 0001819133
- company_name: Tango Therapeutics, Inc.
- filed_at: 2025-06-06T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.03, 5.07, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1819133/000119312525137032/0001193125-25-137032-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1819133/000119312525137032/d926935d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-137032
- JSON: https://secwatch.observer/filing/0001193125-25-137032.json
- Plain text: https://secwatch.observer/filing/0001193125-25-137032.txt

## Key facts
- Governance Changes
  Tango Therapeutics, Inc.: Amendment to increase authorized shares of common stock from 200,000,000 to 400,000,000 (effective 2025-06-05).
  - Change: charter amendment
  - Effective: 2025-06-05
  source text: The certificate of amendment of the Company’s Second Amended and Restated Certificate of Incorporation (the “Certificate of Amendment”), was filed with the Secretary of State of the State of Delaware on June 5, 2025 and became effective upon filing.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1819133/000119312525137032/0001193125-25-137032-index.htm

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