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ABPOOTCBiological Products, (No Diagnostic Substances)Fiscal year ends December 31Also trades as ABPWW

Abpro Holdings, Inc.

Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 14, 2026
$0.41+0.00 (+0.11%)

Close on Oct 19, 2026

Market cap
$2.41M
P/E (TTM)
–
Dividend yield
–

About Abpro

Biological Products, (No Diagnostic Substances), SIC 2836

Abpro Holdings, Inc. is a biotechnology company focused on developing next-generation antibody therapeutics for patients with severe and life-threatening conditions. The company utilizes its proprietary antibody discovery and engineering platforms, DiversImmune and MultiMab, to design multi-specific antibody candidates primarily targeting immuno-oncology, ophthalmology, and infectious diseases. Its core pipeline includes ABP-102, a bispecific T-cell engager targeting HER2 and CD3 for solid tumors such as breast and gastric cancers, and ABP-201, a bispecific candidate designed to inhibit VEGF and ANG-2 to treat vascular diseases of the eye like wet age-related macular degeneration. The company pursues collaborative agreements and licensing partnerships with third-party biopharmaceutical developers, including Celltrion and Abpro Bio, to advance its programs.

The company operates corporate offices in Burlington, Massachusetts, where its principal executive facilities are located. Through territorial and global partnerships, Abpro engages in collaborative development agreements covering worldwide markets, including rights structured across Asia, the Middle East, and the Commonwealth of Independent States.

Summary of the business section of Abpro's latest annual report, written by StockData.

Company profile

Company

Legal name
Abpro Holdings, Inc.
Headquarters
New York, NY
Address
6 St Johns Lane, Floor 5 10013
Phone
(248) 890-7200
Website
abpro.co
Employees
1, Dec 31, 2025
Industry
Biological Products, (No Diagnostic Substances)
Incorporated in
Delaware
Fiscal year ends
December 31
Auditor
Wolf & Company, P.C., Boston, MA

Stock & identifiers

Ticker
ABPO
Other tickers
ABPWW
Exchange
OTC
IPO date
Jan 18, 2022
Shares outstanding
6M, Aug 14, 2026
Public float
$9.30M, Jun 30, 2025
Filer category
Non-accelerated filer<br>Smaller reporting company<br>Emerging growth company
Stock splits
1-for-30 reverse, Nov 14, 2025; 1-for-30 reverse, Nov 3, 2025
SEC CIK
1893219
CUSIP
000847202
ISIN
US0008472021
EIN
87-1013956

Executives and directors

Officers and directors who filed ownership reports (Forms 3, 4, 5) in the last two years

NamePositionShares owned
Jin Wook (Miles) SukCEO and Chairman, Director718,512
Ian ChanChief Executive Officer, Director8,652,800
Robert J. Markelewicz Jr.Chief Medical Officer–
Soo Young LeeDirector–
Anthony D. EisenbergDirector–
Ian McDonaldDirector–

Employees

Headcount reported in annual reports

“As of March 30, 2026, we had one full-time employee and two part-time employees.”

Corporate history

Events identified from SEC filings

DateEventDetails
Sep 30, 2026DelistingNotice of delisting from exchange (Form 25)
Jun 4, 2026Listing noticeNotice of delisting or failure to satisfy a listing rule (8-K Item 3.01)
May 15, 2026Late filingNotification of late filing
Mar 31, 2026Late filingNotification of late filing
Feb 20, 2026Listing noticeNotice of delisting or failure to satisfy a listing rule (8-K Item 3.01)
Feb 11, 2026Listing noticeNotice of delisting or failure to satisfy a listing rule (8-K Item 3.01)
Oct 17, 2025Listing noticeNotice of delisting or failure to satisfy a listing rule (8-K Item 3.01)
Oct 3, 2025Listing noticeNotice of delisting or failure to satisfy a listing rule (8-K Item 3.01)
Apr 16, 2025Listing noticeNotice of delisting or failure to satisfy a listing rule (8-K Item 3.01)
Apr 8, 2025Listing noticeNotice of delisting or failure to satisfy a listing rule (8-K Item 3.01)
Apr 1, 2025Late filingNotification of late filing
Dec 10, 2024Auditor changeChange in certifying accountant (8-K Item 4.01)
Nov 26, 2024Acquisition / saleCompletion of acquisition or disposition of assets (8-K Item 2.01)
Nov 15, 2024Late filingNotification of late filing
Nov 12, 2024Name changeName changed from Atlantic Coastal Acquisition Corp. II to Abpro Holdings, Inc.
Nov 12, 2024DelistingNotice of delisting from exchange (Form 25)
Oct 21, 2024Listing noticeNotice of delisting or failure to satisfy a listing rule (8-K Item 3.01)
Aug 14, 2024Late filingNotification of late filing
Aug 6, 2024Listing noticeNotice of delisting or failure to satisfy a listing rule (8-K Item 3.01)
Jun 7, 2024Listing noticeNotice of delisting or failure to satisfy a listing rule (8-K Item 3.01)
May 15, 2024Late filingNotification of late filing
Apr 23, 2024Listing noticeNotice of delisting or failure to satisfy a listing rule (8-K Item 3.01)
Jan 19, 2024MergerRegistration of securities for a merger or exchange offer (S-4)
Nov 14, 2023Late filingNotification of late filing
Aug 14, 2023Late filingNotification of late filing
May 15, 2023Late filingNotification of late filing
Mar 31, 2023Late filingNotification of late filing
May 16, 2022Late filingNotification of late filing
Jan 18, 2022IPOInitial public offering priced (424B4 prospectus)
Jan 13, 2022ListingRegistration of securities on an exchange (Form 8-A)