13D Filing: Pioneer Step Holdings Ltd and Chromadex Corp (CDXC)

collectively by Pioneer Step and Champion River is 7,649,968, which represents approximately 16.6% of the outstanding Shares, based upon 46,093,894 outstanding shares of the common stock of the
Issuer, which represents 39,790,080 shares reported by the Issuer to be issued and outstanding as of May 10, 2017, as set forth in the Issuers quarterly report on Form 10-Q, for the quarter ended
April 1, 2017, as filed with the Securities and Exchange Commission on May 11, 2017, plus 2,521,526 shares and 3,782,288 shares issued to Pioneer Step Holdings Limited and Champion River Ventures Limited, respectively, pursuant to the
Purchase Agreement, as amended by the First Amendment.

The share ownership reported by Pioneer Step on this Schedule 13D does not include any Shares
owned by Champion River, and each of Pioneer Step and the other Reporting Person on this Schedule 13D disclaims beneficial ownership of any Shares owned by Champion River or any other person.

(c) Information with respect to all transactions in the Shares beneficially owned by the Reporting Persons that were effected during the past sixty days is
set forth in Item 4 and incorporated herein by reference.

(d) Not applicable.

(e) Not applicable.