Shaun Maguire
American venture capitalist (born 1985)
From Wikipedia, the free encyclopedia
Shaun Maguire (born 1985)[1] is an American venture capitalist and political activist who is a partner at Sequoia Capital.[2][3][4] Before joining Sequoia in 2019, he was a partner at GV and co-founded the cybersecurity company Expanse, which was acquired by Palo Alto Networks in 2020.
Shaun Maguire | |
|---|---|
| Born | 1985 (age 40–41) |
| Alma mater | University of Southern California, Stanford University, and Caltech |
| Occupations | Venture capitalist, political activist |
| Known for | Partner at Sequoia Capital |
Early life and education
Maguire grew up in Orange County, California, where he attended public school. In an interview with the Caltech Heritage Project, Maguire reported that starting in eighth grade he became disengaged from school, eventually missing more days than permitted under California law. He left secondary school early by passing the California High School Proficiency Exam, a GED equivalency, and attended community college for two years while his peers completed high school.[1]
In the same interview, Maguire reported that he earned a 1.8 GPA in high school and failed his Algebra 2 course, and that his admission to Stanford University depended on letters of recommendation.[1] He has described developing an early passion for astronomy and space around age nine, which later evolved into an interest in black holes and general relativity.[1]
Maguire earned a Bachelor of Science in Mathematics from the University of Southern California (USC), where he was introduced to competitive mathematics through the Putnam Mathematical Competition.[1] He subsequently pursued a Master of Science in Statistics at Stanford University, drawn by his interest in theoretical probability.[1] He later transferred to Caltech, where he initially joined the Control and Dynamical Systems department, earning a second Master of Science in that field.[1]
Maguire received his PhD in physics from Caltech in 2018, with a dissertation titled The Spectral Theory of Multiboundary Wormholes.[5] His doctoral research was conducted at the Institute for Quantum Information and Matter (IQIM) under the supervision of John Preskill, a leading figure in quantum information and quantum computation.[1][2] During his doctoral studies, Maguire co-authored a paper with physicist Richard A. Muller titled "Now, and the Flow of Time", which proposed that the progression of time can be understood through the continuous creation of new space during Hubble expansion.[6]
In 2018, Maguire married his Iranian Jewish wife in Israel and subsequently added Cohn as his last name.[7]
Career
Entrepreneurial ventures
Maguire's early career was defined by two co-founded companies that drew directly on his research background.
| Company | Founded | Technology focus | Outcome |
|---|---|---|---|
| Escape Dynamics | 2010 | Microwave beam-powered space propulsion for small satellite launch vehicles | Ceased operations (c. 2015) |
| Qadium / Expanse | 2012 | Internet-scale asset discovery and cybersecurity | Acquired by Palo Alto Networks for over $1 billion (December 2020) |
In 2010, while still completing his doctorate, Maguire cofounded Escape Dynamics with a team of Caltech scientists—a space technology company that pursued beam-powered propulsion systems for small satellite launch vehicles.[8] The company explored the use of ground-based microwave beams to power ascent vehicles, eliminating the need for onboard propellant and reducing launch costs for small payloads. Escape Dynamics ceased operations around 2015.[9] He was subsequently recruited to DARPA by Regina Dugan, then Director of DARPA and a Caltech alumna, and worked there for approximately one and a half years, including a deployment to Afghanistan as a civilian contractor, an experience he has described as profoundly formative.[10][1] His DARPA work led directly to the founding of a cybersecurity company.[1]
In 2012, Maguire co-founded Qadium—later rebranded as Expanse—a cybersecurity firm focused on internet-scale asset discovery, allowing organizations to identify and monitor devices connected to the public internet.[11] The company was acquired by Palo Alto Networks in December 2020 for over $1 billion, one of the largest cybersecurity acquisitions of that year.[11][1]
Google Ventures (GV)
Maguire entered the venture capital industry in 2016, joining GV (formerly Google Ventures) as a partner while completing his PhD at Caltech.[1] His investment focus at GV was centred on frontier technology, a sector where his dual background in physics and cybersecurity was a significant differentiator.[1] Based in Los Angeles, Maguire was able to continue his doctoral research in quantum gravity while building a deal pipeline in the emerging Southern California technology ecosystem.[1]
During his tenure at GV, Maguire led or co-led investments across quantum computing, fintech, proptech, and deep hardware technology. The following table summarises his key GV portfolio investments:
| Portfolio company | Industry sector | Role / contribution |
|---|---|---|
| IonQ | Quantum computing | Led the Series A round; conducted deep technical diligence requiring academic expertise in quantum information[1] |
| Stripe | Fintech / payments | Led or co-led investment in the global payments infrastructure company[12] |
| Lightmatter | Photonic computing | Early backer of light-based AI hardware acceleration technology[13] |
| SpinLaunch | Space technology | Sourced and led investment in kinetic energy-based non-rocket launch technology[14] |
| Opendoor | Real estate technology | Led investment in the iBuying model for residential real estate transactions[15] |
Across his GV tenure, Maguire's portfolio spanned multiple technology verticals, including quantum computing (IonQ), fintech (Stripe), real estate technology (Opendoor), photonic computing (Lightmatter), and space launch (SpinLaunch).[16][17] The breadth of these investments reflected a thesis centred on technically complex, capital-intensive sectors where Maguire's scientific background provided a structural analytical advantage.[1]
Sequoia Capital
He worked at GV for three years before leaving for Sequoia Capital in 2019, where he became a general partner.[1][18] At Sequoia, Maguire has managed the firm's investments in companies associated with Elon Musk, including SpaceX, The Boring Company, xAI, Neuralink, and X.[19][20] In interviews, Maguire has described investing in many companies that "touch atoms," reflecting a focus on hardware and deep technology sectors.[1]
Political activity and controversies
Maguire's political profile shifted significantly during the 2024 presidential election. Having previously described himself as a "Never Trumper" in 2016, Maguire publicly detailed his evolution into a Trump supporter, stating that his support was based on an assessment of Trump's foreign policy approach.[3] In May 2024, following Trump's conviction in the New York hush-money trial, Maguire announced a $300,000 donation to the Trump campaign, framing it as a stand against what he described as "lawfare" and a broader culture of silence in Silicon Valley.[21] The Atlantic described Maguire as part of a broader group of "Trumpy VCs" in the tech industry who publicly aligned with Trump during the 2024 campaign.[3] Following Trump's 2024 election victory, Maguire served as an advisor to the presidential transition team, specifically assisting with the selection of candidates for intelligence community leadership positions.[3][22] He also assisted Musk during his tenure leading the Department of Government Efficiency (DOGE).[22][23] In February 2025, U.S. Senator Gary Peters and colleagues on the Senate Homeland Security and Governmental Affairs Committee sent a letter calling for a pause on DOGE activities, naming Maguire among a group of individuals associated with Musk who were reportedly accessing federal agencies.[24]
Mamdani comments
On July 4, 2025, Maguire posted on X that New York City mayoral candidate Zohran Mamdani “...comes from a culture that lies about everything. It's literally a virtue to lie if it advances his Islamist agenda. The West will learn this lesson the hard way."[25][26][27] Maguire's comments were widely criticized as racist and Islamophobic, including by Dilawar Syed, former deputy administrator of the United States Small Business Administration.[28][29][30] Saudi entrepreneur Hisham Al-Falih criticized Maguire's comments, describing them as "appalling".[31]
Maguire defended his post on July 7, 2025,[32] after which a petition signed by more than 900 founders and tech professionals was circulated calling for Sequoia Capital to publicly denounce Maguire's remarks, commission an independent investigation into his conduct, and implement stronger policies against hate speech, with a deadline of July 14, 2025, for a formal response.[11] Supporters issued an open letter in defense of Maguire on July 8, 2025.[11][33]
In the aftermath of the controversy, Sequoia’s COO Sumaiya Balbale, a practicing Muslim, resigned in August 2025. According to the Financial Times, Maguire’s remarks not only strained the firm’s relations with its Middle Eastern investors but were also described by Balbale as "Islamophobic".[34][35][36] Roelof Botha, Sequoia's managing partner, defended Maguire's comments in an October 2025 appearance at TechCrunch Disrupt, arguing that Sequoia "celebrates diversity of opinions" and requires "spiky people" who challenge conventional thinking.[37] Botha subsequently stepped down as managing partner in November 2025, with leadership passing to Alfred Lin and Pat Grady.[38]
Brown University shooting
After the 2025 Brown University shooting, Maguire spread a conspiracy theory on social media inaccurately identifying a Palestinian student at Brown University as the perpetrator.[39] Maguire said there was "very strong evidence" that this student was the shooter, and inaccurately claimed that an MIT professor who was also killed was targeted because he was Jewish. A different individual, Claudio Manuel Neves Valente, was subsequently identified as the shooter. Maguire then deleted his posts on the shooting.[40]
On December 19, 2025, Council on American-Islamic Relations (CAIR) National Deputy Director Edward Ahmed Mitchell released a statement condemning Maguire, writing "We strongly condemn anti-Muslim, pro-Israel extremists who rushed to blame the recent campus shooting on an innocent Brown University student who is Muslim and an advocate for Palestinian human rights. The remarks that Shaun Maguire and other bigots made about this student were irresponsible, dangerous, and, sadly, predictable."[41]