---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-179013"
form_type: "8-K"
ticker: null
cik: "0000711772"
company_name: "CAMBRIDGE BANCORP"
filed_at: "2024-07-15T23:59:59+00:00"
generated_at: "2026-05-31T20:52:55.050157+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Eastern Bankshares completes acquisition of Cambridge Bancorp; exchange ratio 4.956

## Summary
- Effective July 12, 2024, each share of Cambridge common stock converted into 4.956 shares of Eastern common stock.
- Cambridge directors and officers ceased at the effective time; Cambridge stock to be delisted from Nasdaq and deregistered.
- Amendment No. 1 to merger agreement revised measurement date for 2022-2023 PRSUs to March 31, 2024.

## SEC filing metadata
- accession: 0001193125-24-179013
- form_type: 8-K
- cik: 0000711772
- company_name: CAMBRIDGE BANCORP
- filed_at: 2024-07-15T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.01, 3.01, 3.03, 5.01, 5.02, 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/711772/000119312524179013/0001193125-24-179013-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/711772/000119312524179013/d809060d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-179013
- JSON: https://secwatch.observer/filing/0001193125-24-179013.json
- Plain text: https://secwatch.observer/filing/0001193125-24-179013.txt

## Key facts
- M&A Transactions
  CAMBRIDGE BANCORP underwent a change of control involving Eastern Bankshares, Inc. for 4.956 shares of common stock of Eastern Bankshares, Inc. per share of Cambridge Bancorp common stock (closed 2024-07-12).
  - Action: change of control
  - Counterparty: Eastern Bankshares, Inc.
  - Consideration: 4.956 shares of common stock of Eastern Bankshares, Inc. per share of Cambridge Bancorp common stock
  - Closing: 2024-07-12
  source text: On July 12, 2024, Eastern Bankshares, Inc. (“Eastern”) completed its previously announced acquisition of Cambridge Bancorp, a Massachusetts corporation (“Cambridge”), pursuant to the Agreement and Plan of Merger, dated as of September 19, 2023 (the “Merger Agreement”), by and among Cambridge, Cambridge Trust Company, Eastern, Eastern Bank and Citadel MS 2023, Inc.
  evidence_url: https://www.sec.gov/Archives/edgar/data/711772/000119312524179013/0001193125-24-179013-index.htm

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