X0203 3 2010-03-23 0 0001288469 MAXLINEAR INC MXL 0001225484 PRESIDIO MANAGEMENT GROUP VIII L L C 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 0001225444 US VENTURE PARTNERS VIII L P 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 0001225449 USVP VIII AFFILIATES FUND L P 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 0001225446 USVP ENTREPRENEUR PARTNERS VIII A L P 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 0001225448 USVP ENTREPRENEUR PARTNERS VIII B L P 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 0001316827 Connors Timothy J 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 0001192391 FEDERMAN IRWIN 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 0001225477 FU WINSTON S 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 0001190636 KRAUSZ STEVEN M 2735 SAND HILL ROAD MENLO PARK CA 94025 0 0 1 0 0001212726 LIDDLE DAVID E 2735 SAND HILL ROAD MENLO PARK CA 94025 1 0 1 0 Series A Convertible Preferred Stock 0 Common Stock 3653501 I Directly owned by USVP VIII Series A Convertible Preferred Stock 0 Common Stock 35265 I Directly owned by AFF VIII Series A Convertible Preferred Stock 0 Common Stock 33767 I Directly owned by EP VIII-A Series A Convertible Preferred Stock 0 Common Stock 17117 I Directly owned by EP VIII-B Series B Convertible Preferred Stock 0 Common Stock 1656451 I Directly owned by USVP VIII Series B Convertible Preferred Stock 0 Common Stock 15988 I Directly owned by AFF VIII Series B Convertible Preferred Stock 0 Common Stock 15309 I Directly owned by EP VIII-A Series B Convertible Preferred Stock 0 Common Stock 7760 I Directly owned by EP VIII-B Each share of Series A Preferred Stock is convertible at any time at the election of the Reporting Persons and will automatically convert into one share of Common Stock immediately prior to the closing of the Registrant's initial public offering. There is no expiration date. Following the conversion of Common Stock into Class B Common Stock immediately prior to the closing of the Registrant's initial public offering, each share of Class B Common Stock will be convertible into one share of Class A Common Stock upon certain transfers and at the option of the holder. On the seventh anniversary of the Registrant's initial public offering, the Class B Common Stock and the Class A Common Stock will automatically convert into a single class of Common Stock See additional Form 3 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 Timothy Connors, 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 2010-03-23