# EDGAR Filing Document

**Accession Number:** 0001893219
**File Stem:** 9999999995-25-001907
**Filing Date:** 2025-6
**Character Count:** 1413
**Document Hash:** 48085a90d12d062b229758a696839c8b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-25-001907.hdr.sgml**: 20250613

**ACCESSION NUMBER**: 9999999995-25-001907

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250612

**DATE AS OF CHANGE**: 20250613

**EFFECTIVENESS DATE**: 20250612

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Abpro Holdings, Inc.
- **CENTRAL INDEX KEY:** 0001893219
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 871013956
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-287492
- **FILM NUMBER:** 251044635

**BUSINESS ADDRESS:**
- **STREET 1:** 6 ST JOHNS LANE, FLOOR 5
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10013
- **BUSINESS PHONE:** 248-890-7200

**MAIL ADDRESS:**
- **STREET 1:** 6 ST JOHNS LANE, FLOOR 5
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10013

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Atlantic Coastal Acquisition Corp. II
- **DATE OF NAME CHANGE:** 20211110

### UNITED STATES
### SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## Notice of Effectiveness

**Date:** June 12, 2025

**Time:** 16:30:00

**Form Type:** S-1

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**CIK:** 0001893219

**Company Name:** Abpro Holdings, Inc.

**File Number:** 333-287492