---
schema_version: "secwatch.filing_event.v1"
accession: "0001388658-23-000152"
form_type: "8-K"
ticker: "IRTC"
cik: "0001388658"
company_name: "iRhythm Holdings, Inc."
filed_at: "2023-11-16T23:59:59+00:00"
generated_at: "2026-06-08T01:02:34.361835+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.15
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# iRhythm amends bylaws for universal proxy rules and DGCL updates

## Summary
- Revised advance notice bylaws requiring additional disclosures from proposing stockholders and nominees.
- Added certification requirement that stockholders comply with SEC Rule 14a-19 universal proxy rules.
- Updated notice provisions for electronic transmission of notices per DGCL amendments.
- Added emergency bylaw provision allowing director quorum during an emergency situation.
- Requires stockholders soliciting proxies to use a non-white proxy card color.

## SEC filing metadata
- accession: 0001388658-23-000152
- form_type: 8-K
- ticker: IRTC
- cik: 0001388658
- company_name: iRhythm Holdings, Inc.
- filed_at: 2023-11-16T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.15
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1388658/000138865823000152/0001388658-23-000152-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1388658/000138865823000152/irtc-20231110.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001388658-23-000152
- JSON: https://secwatch.observer/filing/0001388658-23-000152.json
- Plain text: https://secwatch.observer/filing/0001388658-23-000152.txt

## Key facts
- Governance Changes
  iRhythm Holdings, Inc.: Adopted amended and restated bylaws effective November 10, 2023, with changes to stockholder meeting procedures, universal proxy rules compliance, advance notice provisions, emergency bylaws, and other ministerial updates (effective 2023-11-10).
  - Change: bylaw amendment
  - Effective: 2023-11-10
  source text: which became immediately effective. Among other things, the amendments effected by the Amended and Restated Bylaws: • revise certain provisions relating to adjournment procedures and lists of stockholders entitled to vote at stockholder meetings
  evidence_url: https://www.sec.gov/Archives/edgar/data/1388658/000138865823000152/0001388658-23-000152-index.htm

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