EXHIBIT 32.1

CERTIFICATION PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
(18 U.S.C. SECTION 1350)
 
In connection with the Annual Report of CollabRx, Inc., a Delaware corporation (the “Company”), on Form 10-K for the year ended March 31, 2015 as filed with the Securities and Exchange Commission (the “Report”), I, Thomas R. Mika, President and Chief Executive Officer of the Company, certify, pursuant to Sec. 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Sec. 1350), that to my knowledge:
 
(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and
 
(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.
 
/s/   Thomas R. Mika
 
Chief Executive Officer and President
 
June 26, 2015
 
 
CERTIFICATION PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
(18 U.S.C. SECTION 1350)
 
In connection with the Annual Report of CollabRx, Inc., a Delaware corporation (the “Company”), on Form 10-K for the year ended March 31, 2015 as filed with the Securities and Exchange Commission (the “Report”), I, Thomas Mika, Acting Chief Financial Officer of the Company, certify, pursuant to Sec. 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Sec. 1350), that to my knowledge:
 
(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and
 
(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

/s/   Thomas Mika
 
Acting Chief Financial Officer
 
June 26, 2015