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Shruthi Narayan joined Penumbra in 2013, serving as a product manager starting off on the Stroke franchise, then transitioning to help build the Peripheral Vascular division and commercialize Penumbra's vascular portfolio of embolization and thrombectomy products globally. In September 2023, Ms. Narayan was promoted to EVP and General Manager, Interventional, and also served as President, Interventional from January 2025 until her appointment as President of Penumbra in September 2025. Prior to joining Penumbra, Ms. Narayan worked for Medtronic, Inc. in engineering, regulatory affairs and then in the cardiovascular sales organization. Ms. Narayan received a B.S. in Electrical Engineering from Anna University, India and a M.S. in Biomedical Engineering from University of Southern California, with a focus on Medical Device Commercialization.

Maggie Yuen joined Penumbra as Chief Financial Officer in December 2019. Prior to joining Penumbra, Ms. Yuen spent more than 20 years driving scalable finance organizations, processes and infrastructure in the Manufacturing, Medical Devices, and Life Science industries. She served as Vice President of Finance of the Genetic Science Division within Thermo Fisher Scientific, Inc. (NYSE: TMO) (Thermo Fisher), a business focused on instrument platforms, cloud-based software, content and services, from 2016 to 2019. In her role, Ms. Yuen directed finance operations, strategic planning and business development activities, among a number of other executive functions. Prior to Thermo Fisher, Ms. Yuen held leadership positions with increasing responsibility at Mirion Technologies (from 2012 to 2016), and senior finance roles at Boston Scientific (NYSE: BSX) (from 2007 to 2010), Glu Mobile (Nasdaq: GLUU) (from 2004 to 2007), and Johnson & Johnson (NYSE: JNJ) (from 2001 to 2004). Ms. Yuen has also served on the Board of Directors of AtriCure, Inc. (Nasdaq: ATRC) since June 2021. Ms. Yuen received an MAcc and M.B.A. from the Weatherhead School of Management and a B.S. from Case Western Reserve University.

Lambert Shiu joined Penumbra in 2015, serving as Director of Finance, then as Vice President, Finance and Accounting until his promotion to Chief Accounting Officer in December 2019. Prior to joining Penumbra, Mr. Shiu worked for PricewaterhouseCoopers LLP (PwC), an accounting firm, for over 13 years. He worked on a variety of teams during his tenure at PwC, each role increasing in levels of responsibility and management and spent two years in their National Office. Mr. Shiu is a Certified Public Accountant in California and received a B.A. from the University of California, Davis.

Adam Elsesser co-founded Penumbra and has served as Chief Executive Officer and a member of the Board since our inception in June 2004, as Chairman of the Board since January 2015, and as President from January 2015 until August 2019 and again from May 2020 until September 2025. Prior to Penumbra, Mr. Elsesser led SMART Therapeutics, Inc. (SMART Therapeutics), a medical device company focused on devices for neuro-intervention, as its Chief Executive Officer from 2000 to 2002 and, after its acquisition by Boston Scientific Corporation, as President of SMART Therapeutics within Boston Scientific Corporation from 2002 to 2005. Before his work in the medical device industry, Mr. Elsesser was a partner in the law firm of Shartsis Friese LLP. Mr. Elsesser received a B.A. from Stanford University and a J.D. from UC Law San Francisco, formerly Hastings College of the Law.

Bridget O'Rourke has served on the Board since April 2017. Ms. O'Rourke has held a number of executive and leadership positions over more than twenty years, with expertise across different industries. Most recently, Ms.O'Rourke served as Executive Director of the executive search and consulting practice of O'Rourke & Associates, a boutique firm providing services exclusively for the credit union industry, from July 2016 until May 2017. From August 2008 to June 2016, Ms.O'Rourke was Head of Human Resources at Passport Capital, LLC, a global asset management firm. Prior to Passport Capital, LLC, from 1997 to 2007 Ms.O'Rourke served in various positions in the financial services and executive search industries, including as Executive Search Director at O'Rourke Career Connections, Controller at Sigma Partners, a multi-fund venture capital firm, and Vice President for Citibank Global Asset Management's Alternative Investment Strategies group. From July 1991 to December 1996, Ms.O'Rourke held audit and internal audit consulting positions of increasing responsibility at Coopers & Lybrand (now known as PricewaterhouseCoopers). Ms.O'Rourke received a B.A. from the University of California, Santa Barbara and became a Certified Public Accountant in 1995. She served on the Board of Directors as Vice Chair and was Audit Committee Chair of the San Francisco Fire Credit Union from 2011 through 2020.

Thomas Wilder has served on the Board since January 2017 and as Presiding Director of the Board since April 2025. Mr. Wilder currently serves as the Chief Executive Officer of VS3 Medical, Inc., a neurovascular company. From August 2017 to September 2023, Mr. Wilder served as the President and Chief Executive Officer of Neuros Medical, Inc., a neuro-modulation company. From February 2010 through July 2016, Mr. Wilder served as the Chief Executive Officer of Sequent Medical, Inc., a company dedicated to the development of innovative catheter-based neurovascular technologies. From April 2006 to 2009, Mr. Wilder served as the President and CEO of PhotoThera, Inc., a company that was developing a unique therapy for acute ischemic stroke patients. From 2002 to 2006, he served as the President and CEO of MicroTherapeutics, Inc. (MTIX), a company also focused on the neurovascular space. Mr. Wilder served in positions of increasing responsibility at Medtronic, Inc. from 1991 through 2002, most recently as Vice President and General Manager of its endovascular stent grafts division. Mr. Wilder began his career in the Financial Statement Audit Practice of Price Waterhouse, where he worked from 1986 to 1989. Mr. Wilder has also served on the Board of Directors of Grey Matter Neurosciences since July 2025. He received a B.A. from Stanford University and an M.B.A. from Northwestern University's Kellogg Graduate School of Management.

Surbhi Sarna has served on the Board since July 2019. Ms. Sarna is CEO and Founder of Collate Software, Inc., a company focused on using artificial intelligence to create and streamline documentation for life science companies. From September 2020 to January 2025, Ms. Sarna served as a General Partner at Y Combinator. In 2011, Ms. Sarna founded nVision Medical Corp (nVision), a healthcare company developing pioneering technology to enable early detection of ovarian cancer, with the intention of fulfilling an unmet clinical need. She led the company from its inception and through its earliest days of product development, funding and initial clinical trials. In April 2018, nVision was acquired by Boston Scientific, and Ms. Sarna led the efforts to commercialize the technology developed by nVision at Boston Scientific through July 2020. Prior to her founding of nVision, Ms. Sarna held a variety of roles in healthcare, including roles at BioCardia and Abbott Vascular. Ms. Sarna also served on the Board of Directors of Biora Therapeutics, Inc. (formerly Progenity, Inc.) from July 2021 to July 2023. Ms. Sarna received a BA from the University of California, Berkeley.

Harpreet Grewalhas served on the Board since April 2015. Mr. Grewal is the Founding Partner and CEO of 123G LLC. Through its operator work, 123G LLC works with high-growth companies to execute on defined business outcomes. Previously, Mr. Grewal served as Chief Operating Officer of Volante Technologies Inc., a global provider of software for the integration, processing and orchestration of payments and financial messages, from September 2019 until September 2023, where he also served on the Board of Directors from 2014 to 2020 and served as Executive in Residence from April 2018 to March 2019. From February 2016 through April 2017, Mr. Grewal served as General Manager of Constant Contact, Inc. (Constant Contact), a technology company primarily focused on marketing tools and a wholly-owned indirect subsidiary of Endurance International Group Holdings, Inc. (Endurance). Prior to the acquisition of Constant Contact by Endurance, from 2010 to February 2016, Mr. Grewal served as Executive Vice President and Chief Financial Officer of Constant Contact. In December 2019, Mr. Grewal settled litigation instituted by the SEC alleging that Mr. Grewal violated the antifraud provisions of Section 17(a) of the Securities Act of 1933, as amended (the Securities Act), Section 10(b) of the Exchange Act and Rule 10b-5 promulgated under the Exchange Act, and violated, or aided and abetted the violation of, the reporting, record-keeping and internal controls requirements of Section 13(a), Section 13(b)(2)(A) and related rules under the Exchange Act in connection with his position at Constant Contact. Without admitting or denying the SEC's allegations, Mr. Grewal consented to the entry of a Final Judgment that permanently enjoined him from future violations of Section 17(a) of the Securities Act and from aiding and abetting future violations of Section 13(a) or Section 13(b)(2)(A) of the Exchange Act, and required him to pay a fine of $350,000, including a $100,000 civil penalty. From 2008 to 2009, Mr. Grewal worked as an independent consultant to small businesses and early-stage entrepreneurs. From 2006 through 2008, Mr. Grewal was Executive Vice President and Chief Financial Officer of VistaPrint, Ltd. (VistaPrint), a publicly-traded online printing and marketing services company. Prior to VistaPrint, Mr. Grewal was Senior Vice President and Chief Financial Officer of GoldenSource Corporation, a data management company, from 2002 to 2006, Chief Financial Officer of eGain Communications Corporation, a customer engagement services company, from 1999 to 2002, and held various financial and strategic planning positions with PepsiCo, Inc., a publicly-traded food and beverage company, from 1996 to 1999. Mr. Grewal received a B.A. from the University of California, Berkeley and a M.A. from Johns Hopkins University.