Stock report · Delisted · NASDAQ
Authentidate Holding Corp. (ADAT)
Delisted Delisted – moved to OTC · last traded January 28, 2016

ADAT no longer trades. Authentidate's common stock was suspended from Nasdaq at the open on January 29, 2016 after the company failed to meet stockholders' equity and minimum bid price rules, and it continued trading on the OTCQB. The company was renamed AEON Global Health Corp. in early 2018 and its ticker changed to AGHC.
Delisting details
- Exchange (former)
- NASDAQ
- Status
- Delisted – moved to OTC
- Last trading day
- January 28, 2016
- Delisted
- April 2016
- Reason
- Delisted from Nasdaq; moved to OTCQB, later renamed AEON Global Health
- Successor
- AEON Global Health Corp. (OTC: AGHC)
- Sector
- Healthcare
- Industry
- Health Information Services
- Headquarters
- Berkeley Heights, New Jersey
About Authentidate Holding Corp.
Authentidate Holding Corp. was a small technology company that began life in 1985 as Bitwise Designs, Inc. and reincorporated in Delaware in 1992. Over time it shifted toward secure electronic document services and later toward healthcare software, offering web-based tools for managing revenue cycle paperwork along with remote patient monitoring systems sold to health care providers and government agencies such as the U.S. Department of Veterans Affairs.
For much of the 2000s and early 2010s the shares traded on the Nasdaq market under the ticker ADAT. The business produced modest revenue and repeated operating losses, and the company received several Nasdaq deficiency notices related to its share price and equity levels. It used reverse splits and capital raises to keep its listing, regaining compliance with the $1.00 minimum bid rule at least once in 2011.
In January 2016 Authentidate completed a combination with Peachstate Health Management LLC, which did business as AEON Clinical Laboratories, a Gainesville, Georgia laboratory focused on toxicology, pharmacogenomic and cancer genetic testing. The deal was treated as a reverse acquisition, so the laboratory's financial history became the company's, and lab testing quickly accounted for nearly all revenue while the legacy software and telehealth unit shrank.
Around the same time, a Nasdaq hearings panel decided to delist the stock because the company still did not meet the exchange's stockholders' equity and minimum bid price requirements. Trading on Nasdaq was suspended at the open on January 29, 2016, and Nasdaq filed a Form 25 in April 2016 to complete the removal. The shares kept trading over the counter on the OTCQB under the same ADAT symbol.
Stockholders approved changing the corporate name to reflect the laboratory business, and the change to AEON Global Health Corp. took effect on January 31, 2018. The OTC ticker switched from ADAT to AGHC on February 1, 2018, with a new CUSIP number. The headquarters had by then moved to the laboratory campus in Gainesville, Georgia.
Authentidate FAQ
What happened to Authentidate stock?
Authentidate's common stock was suspended from Nasdaq at the open on January 29, 2016 after the company failed to meet stockholders' equity and minimum bid price rules, and it continued trading on the OTCQB. The company was renamed AEON Global Health Corp. in early 2018 and its ticker changed to AGHC.
Can I still buy ADAT stock?
No. ADAT is no longer listed on NASDAQ or any other U.S. exchange.
ADAT no longer trades, so there is no live quote or chart. The information on this page is for reference only and is not investment advice; see our disclaimer.