INVESTOR NOTICE: The Schall Law Firm Announces the Filing of a Class Action Lawsuit Against Flex Pharma, Inc. and Encourages Investors with Losses in Excess of $100,000 to Contact the Firm

Schall Law Firm, a national shareholder rights litigation firm,
announces the filing of a class action lawsuit against Flex Pharma, Inc.
(“Flex Pharma” or ”the Company”) (NASDAQ: FLKS)
for violations of §§10(b) and 20(a) of the Securities Exchange Act of
1934 and Rule 10b-5 promulgated thereunder by the U.S. Securities and
Exchange Commission.

Investors who purchased the Company’s shares between November 6, 2017,
and June 12, 2018, inclusive (the ”Class Period”), are encouraged to
contact the firm before August 20, 2018.

If you are a shareholder who suffered a loss, click
here to participate.

We also encourage you to contact Brian Schall, or Sherin Mahdavian, of
the Schall Law Firm, 1880 Century Park East, Suite 404, Los Angeles, CA
90067, at 424-303-1964, to discuss your rights free of charge. You can
also reach us through the firm’s website at www.schallfirm.com,
or by email at brian@schallfirm.com.

The class, in this case, has not yet been certified, and until
certification occurs, you are not represented by an attorney. If you
choose to take no action, you can remain an absent class member.

According to the Complaint, the Company made false and misleading
statements to the market throughout the class period. Flex Pharma was
overly optimistic regarding the approval chance and viability of
FLX-787, its potential product for the treatment of ALS and CMT. This
resulted in the Company making materially false and misleading public
statements. When the market learned the true details about Flex Pharma,
investors suffered damages.

The Schall Law Firm represents investors around the world and
specializes in securities class action lawsuits and shareholder rights

This press release may be considered Attorney Advertising in some
jurisdictions under the applicable law and rules of ethics.

View source version on businesswire.com: https://www.businesswire.com/news/home/20180619006436/en/