X0303 4 2010-03-29 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 Common Stock ($0.0001 par value) 2010-03-29 4 C 0 5309952 A 5309952 I Directly owned by USVP VIII Common Stock ($0.0001 par value) 2010-03-29 4 C 0 51253 A 51253 I Directly owned by AFF VIII Common Stock ($0.0001 par value) 2010-03-29 4 C 0 49076 A 49076 I Directly owned by EP VIII-A Common Stock ($0.0001 par value) 2010-03-29 4 C 0 24877 A 24877 I Directly owned by EP VIII-B Series A Convertible Preferred Stock 0 2010-03-29 4 C 0 3653501 D Common Stock 3653501 0 I Directly owned by USVP VIII Series A Convertible Preferred Stock 0 2010-03-29 4 C 0 35265 D Common Stock 35265 0 I Directly owned by AFF VIII Series A Convertible Preferred Stock 0 2010-03-29 4 C 0 33767 D Common Stock 33767 0 I Directly owned by EP VIII-A Series A Convertible Preferred Stock 0 2010-03-29 4 C 0 17117 D Common Stock 17117 0 I Directly owned by EP VIII-B Series B Convertible Preferred Stock 0 2010-03-29 4 C 0 1656451 D Common Stock 1656451 0 I Directly owned by USVP VIII Series B Convertible Preferred Stock 0 2010-03-29 4 C 0 15988 D Common Stock 15988 0 I Directly owned by AFF VIII Series B Convertible Preferred Stock 0 2010-03-29 4 C 0 15309 D Common Stock 15309 0 I Directly owned by EP VIII-A Series B Convertible Preferred Stock 0 2010-03-29 4 C 0 7760 D Common Stock 7760 0 I Directly owned by EP VIII-B Each share of Common Stock shall be automatically converted into one share of Class B Common Stock immediately prior to the closing of the Registrant's initial public offering on March 29, 2010. 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 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 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. Pursuant to the consent of the holders, each share of Series A Preferred Stock shall be converted into one share of Common Stock immediately prior to the closing of the Registrant's initial public offering and has no expiration date. Pursuant to the consent of the holders, each share of Series B Preferred Stock shall be converted into one share of Common Stock immediately prior to the closing of the Registrant's initial public offering and has no expiration date. Michael P. Maher - Attorney in fact for each reporting person 2010-03-29