13D Filing: Abdiel Qualified Master Fund LP Files Update on Mindbody, Inc. (MB) Position

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

SCHEDULE 13D

(Rule 13d-101)

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 3)

MINDBODY,
Inc.

(Name of Issuer)

Class A Common Stock, par value $0.000004 per share

(Title of Class of Securities)

60255W105

(CUSIP Number)

with a copy to:

Abdiel Capital 410 Park Avenue, Suite 930 New York, NY 10022 Attn: Colin T. Moran Tel: (646) 496-9202		Ropes & Gray LLP 1211 Avenue of the Americas New York, NY 10036 Attn: Sarah Davidoff, Esq. Tel: (212) 596-9000

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

February 16, 2016

Date
of Event Which Requires Filing of This Statement)

If the filing
person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box.  ¨

Note. Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for
other parties to whom copies are to be sent.

The information required on the remainder of this cover page shall not be deemed to be filed for the purpose of Section 18 of the Securities
Exchange Act of 1934 (Act) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).