---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-105078"
form_type: "8-K"
ticker: "ABPO"
cik: "0001893219"
company_name: "Abpro Holdings, Inc."
filed_at: "2023-04-18T23:59:59+00:00"
generated_at: "2026-06-17T00:54:52.635005+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# SPAC Atlantic Coastal Acquisition II extends deadline to Oct 2023; 26.6M shares redeemed

## Summary
- Shareholders approved charter amendment extending business combination deadline from Apr 19, 2023 to Oct 19, 2023, with possible further extension to Dec 19, 2023.
- Holders of 26,564,308 public shares redeemed at ~$10.40 per share, reducing trust account.
- Sponsor entered non-redemption agreements for 3,325,900 shares; will transfer 831,475 sponsor shares post-business combination.
- Series B holders voluntarily converted 7,499,999 shares to Series A, with voting restrictions and no trust distribution rights.
- Post-conversion and redemptions, outstanding shares: 10,935,691 Series A and 1 Series B share.

## SEC filing metadata
- accession: 0001193125-23-105078
- form_type: 8-K
- ticker: ABPO
- cik: 0001893219
- company_name: Abpro Holdings, Inc.
- filed_at: 2023-04-18T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 5.03, 5.07, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1893219/000119312523105078/0001193125-23-105078-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1893219/000119312523105078/d450777d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-105078
- JSON: https://secwatch.observer/filing/0001193125-23-105078.json
- Plain text: https://secwatch.observer/filing/0001193125-23-105078.txt

## Key facts
- Governance Changes
  Abpro Holdings, Inc.: Amended charter to extend business combination deadline, add Series B-to-Series A conversion right, and require 65% vote for certain amendments (effective 2023-04-18).
  - Change: charter amendment
  - Effective: 2023-04-18
  source text: a proposal to amend the Company’s amended and restated certificate of incorporation (the “Charter”) to (a) extend the date by which the Company must consummate a business combination, (b) provide holders of Series B Common Stock (as defined in the Charter) the right to convert any and all their Series B Common Stock into Series A common stock on a one-for-one basis prior to the closing of a business combination at the election of the holder and (c) provide that certain charter amendments can be effectuated with the affirmative vote of 65% of the shares of common stock outstanding that are entitled to vote
  evidence_url: https://www.sec.gov/Archives/edgar/data/1893219/000119312523105078/0001193125-23-105078-index.htm
- Shareholder Votes
  Abpro Holdings, Inc. shareholders approved Proposal to amend the Charter to extend the business combination date, provide Series B conversion rights, and allow certain amendments with 65% vote at the 2023-04-18 meeting.
  - Proposal: charter amendment
  - Outcome: passed
  - Meeting: 2023-04-18
  source text: (1) Proposal No. 1 — The Charter Amendment Proposal — a proposal to amend the Company’s amended and restated certificate of incorporation (the “Charter”) to (a) extend the date by which the Company must consummate a business combination, (b) provide holders of Series B Common Stock (as defined in the Charter) the right to convert any and all their Series B Common Stock into Series A common stock on a one-for-one basis prior to the closing of a business combination at the election of the holder and (c) provide that certain charter amendments can be effectuated with the affirmative vote of 65% of the shares of common stock outstanding that are entitled to vote. The following is a tabulation of the votes with respect to this proposal, which was approved by the Company’s stockholders: For Against Abstain Broker Non-Votes 27,839,831 1,624,121 3 N/A
  evidence_url: https://www.sec.gov/Archives/edgar/data/1893219/000119312523105078/0001193125-23-105078-index.htm

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