13D Filing: Maxlinear Inc and Exar Corp (NYSE:EXAR)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

EXAR
CORPORATION

(Name of Issuer)

Common Stock, $0.0001 Par Value Per Share

(Title of Class of Securities)    

300645108

(CUSIP Number
of Class of Securities)

Kishore Seendripu, Ph. D.

President and Chief Executive Officer

MaxLinear, Inc.

5966 La
Place Court, Suite 100

Carlsbad, CA 92008

(760) 692-0711

With a
copy to:

Robert F. Kornegay

Wilson Sonsini Goodrich and Rosati P.C.

12235 El Camino Real, Suite 200

San Diego, CA 92130

(858) 350-2300

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

March 28, 2017

(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 that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-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 240.13d-7 for
other parties to whom copies are to be sent.

*	The remainder of this cover page shall be filled out for a reporting persons 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 (the 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).