# EDGAR Filing Document

**Accession Number:** 0001814140
**File Stem:** 9999999995-23-000622
**Filing Date:** 2023-3
**Character Count:** 1351
**Document Hash:** 7ae52a66d3ba5728a3aecec0b44b5b5a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-23-000622.hdr.sgml**: 20230322

**ACCESSION NUMBER**: 9999999995-23-000622

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230321

**DATE AS OF CHANGE**: 20230322

**EFFECTIVENESS DATE**: 20230321

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Apexigen, Inc.
- **CENTRAL INDEX KEY:** 0001814140
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **IRS NUMBER:** 851260244
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-269912
- **FILM NUMBER:** 23751170

**BUSINESS ADDRESS:**
- **STREET 1:** 75 SHOREWAY ROAD, SUITE C
- **CITY:** SAN CARLOS
- **STATE:** CA
- **ZIP:** 94070
- **BUSINESS PHONE:** 650.931.6236

**MAIL ADDRESS:**
- **STREET 1:** 75 SHOREWAY ROAD, SUITE C
- **CITY:** SAN CARLOS
- **STATE:** CA
- **ZIP:** 94070

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Brookline Capital Acquisition Corp.
- **DATE OF NAME CHANGE:** 20200603

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

## Notice of Effectiveness

**Date:** March 21, 2023

**Time:** 16:05:00

**Form Type:** S-1

---

**CIK:** 0001814140

**Company Name:** Apexigen, Inc.

**File Number:** 333-269912