X0303 4 2011-02-07 0001288469 MAXLINEAR INC MXL 0001225484 PRESIDIO MANAGEMENT GROUP VIII L L C 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 0001225480 ROOT JONATHAN D 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 0001316575 Rust Christopher J 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 0001474322 Tansey Casey M 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 0001048637 YOUNG PHILIP M 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 Class A Common Stock ($0.0001 par value) 2011-02-07 4 C 0 750000 A 750000 I Directly owned by USVP VIII Class A Common Stock ($0.0001 par value) 2011-02-07 4 C 0 7240 A 7240 I Directly owned by AFF VIII Class A Common Stock ($0.0001 par value) 2011-02-07 4 C 0 6932 A 6932 I Directly owned by EP VIII-A Class A Common Stock ($0.0001 par value) 2011-02-07 4 C 0 3514 A 3514 I Directly owned by EP VIII-B Class A Common Stock ($0.0001 par value) 2011-02-07 4 J 0 750000 D 0 I Directly owned by USVP VIII Class A Common Stock ($0.0001 par value) 2011-02-07 4 J 0 7240 D 0 I Directly owned by AFF VIII Class B Common Stock (convertible into Class A Common Stock) 2011-02-07 4 C 0 750000 0 D Class A Common Stock ($0.0001 par value) 750000 3529845 I Directly owned by USVP VIII Class B Common Stock (convertible into Class A Common Stock) 2011-02-07 4 C 0 7240 0 D Class A Common Stock ($0.0001 par value) 7240 34070 I Directly owned by AFF VIII Class B Common Stock (convertible into Class A Common Stock) 2011-02-07 4 C 0 6932 0 D Class A Common Stock ($0.0001 par value) 6932 32624 I Directly owned by EP VIII-A Class B Common Stock (convertible into Class A Common Stock) 2011-02-07 4 C 0 3514 0 D Class A Common Stock ($0.0001 par value) 3514 16538 I Directly owned by EP VIII-B Each share of Class A Common Stock, which is the publicly traded stock, was issued upon conversion of one share of Class B Common Stock at the election of the Reporting Persons. Distribution in kind from partnership without consideration to its general and limited partners. Each share of Class B Common Stock is convertible into one share of Class A Common Stock, which is the Registrant's publicly traded stock registered under Section 12(b) of the Securities and Exchange Act of 1934, as amended, upon certain transfers and at the option of the holder. On the seventh anniversary of the closing of the Registrant's initial public offering (March 29, 2017), the Class B Common Stock and the Class A Common Stock will automatically convert into a single class of Common Stock See additional Form 4 filed by Presidio Management Group VIII, LLC ("PMG VIII") for additional members of this joint filing. PMG VIII is the general partner of US Venture Partners VIII, L.P. ("USVP VIII"), USVP Entrepreneur Partners VIII-A, L.P. ("EP VIII-A"), USVP Entrepreneur Partners VIII-B, L.P. ("EP VIII-B"), and USVP VIII Affiliates Fund, L.P. ("AFF VIII"), and Irwin Federman, Winston S. Fu, Steven M. Krausz, David E. Liddle, Jonathan D. Root, Christopher Rust, Casey M. Tansey, and Philip M. Young, the managing members of PMG VIII, may be deemed to share voting and dispositive power over the shares held by USVP VIII, EP VIII-A, EP VIII-B and AFF VIII. Such persons and entities disclaim beneficial ownership of shares held by USVP VIII, EP VIII-A, EP VIII-B and AFF VIII except to the extent of any pecuniary interest therein. Michael P. Maher - Attorney in fact for each reporting person 2011-02-08