13D Filing: Altai Capital and Mobileiron Inc. (MOBL)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D
(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS
FILED PURSUANT TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(a)

MobileIron, Inc.
(Name of Issuer)

Common Stock, par value $0.0001 per share

(Title of Class of Securities)

60739U204

(CUSIP Number)

Rishi Bajaj

Managing Principal

Altai Capital Management, L.P.

230 West 56th Street, Apt. 53C

New York, New York 10019

212-201-5734

With a copy to:

Marc Weingarten

Schulte Roth & Zabel LLP

919 Third Avenue

New York, New York 10022

212-756-2000

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

October 2,
2017

(Date of Event Which Requires Filing of this
Statement)

(Page 1 of 11)

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 [o].

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 remainder of this cover page shall
be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for
any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

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).