Marissa Mayer
Angel Investor
San Francisco, United States
Marissa Mayer is a seed investor in San Francisco focused on Internet and E-Commerce. Marissa Mayer is the Co-Founder at Sunshine. He attended Stanford University. She is also a member of the Board of Directors at AT&T.
- Total investments:
- 35
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Marissa Mayer invests in
Stages Marissa Mayer invests in
Countries Marissa Mayer invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $1M–$5M
- Series A
- $6.3M–$25M
- Series B
- $5.5M–$28M
Investment Focus
Industry
- Internet 7 (20%)
- E-Commerce 6 (17%)
- SaaS 3 (9%)
- Health Care 3 (9%)
- Marketplace 3 (9%)
Stage
- Seed 14 (40%)
- Series A 10 (29%)
- Series B 4 (11%)
- Series C 3 (9%)
- Venture - Series Unknown 2 (6%)
Country
- United States 28 (80%)
- Australia 1 (3%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Dazzle AI is a tech company that offers an AI personal assistant. | $8M / Seed / Dec 23, 2025 | ||
| Scorbit develops a platform for pinball players and pinball machine owners and operators. | $5M / Seed / Nov 13, 2025 | ||
| Ketone-IQ offers subscription-based cognitive supplements designed to enhance mental performance and overall brain health. | Series A / Aug 26, 2025 | ||
| Arcade is a B2C platform that transforms the jewelry market through its prompt-to-product solution, allowing users to create unique designs using AI. The marketplace supports various user roles, enabling customers, designers, and influencers to engage and collaborate. | $25M / Series A / Mar 24, 2025 | ||
| ReciMe is the ultimate cooking app that helps you save, share, and discover new recipes. It was founded in 2020 and is located in Melbourne, Victoria, Australia. | $1M / Seed / Jul 02, 2024 | ||
| Hinote is a unique, expressive method of mobile communication for people who enjoy flexing, staying still, and delighting. | $1.9M / Pre-Seed / May 08, 2023 | ||
| Founded by veteran business executive Noosheen Hashemi and Stanford Professor of Genetics and personalized medicine pioneer Dr. Michael Snyder, January AI is a precision health platform that combines AI, multiomic data, and real-time behavioral signals to deliver deeply personalized metabolic insights and predictions for individuals and clinicians.January AI helps people understand how their body uniquely responds to food, activity, sleep, and other lifestyle factors. Through its mobile app, users can seamlessly track nutrition, integrate data from wearables, EHRs and continuous glucose monitors, and receive AI-driven insights that translate complex health data into simple, actionable recommendations. January also developed the world’s first virtual glucose monitor, enabling users to predict their blood sugar response to foods, with or without a physical CGM, making personalized metabolic health accessible at scale.Beyond the consumer experience, January AI powers a clinical intelligence platform. By integrating data across labs, wearables, genomics, and lifestyle inputs, January creates a dynamic health profile that surfaces patterns, identifies potential drivers of metabolic dysfunction, and supports personalized care plans. Clinicians and partners can leverage this intelligence to accelerate analysis, improve patient engagement, and deliver more precise, data-driven interventions. | $8.8M / Venture - Series Unknown / Feb 25, 2021 | ||
| The Wonder’s design makes clear that the space has been created for families. Members enter to a Dyson-sponsored “stroller valet,” where they can park their strollers in a closet and return to oiled wheels and a full detailing. The parents-only lounge connects to the café—serving wine and “milk flights” of regular, chocolate, and strawberry—througha hidden entrance, so parents don’t have to run past their kids yelling “Mom!” to get a drink. The bathroom boasts a deeper-than-usual sink for cleaning up diaper emergencies and a hand-dryer at kid level. The track list will play clean versions of Beyoncé songs instead of the “Itsy Bitsy Spider.” | $2M / Venture - Series Unknown / May 09, 2019 | ||
| Players’ Lounge is a real money gaming platform built for video games. Gamers can wager on their own performance or stake others in competitive titles like Call of Duty, Fortnite, and Madden. Whether you’re playing or spectating, Players’ Lounge makes every match a chance to win real money — by betting on your own skill or backing the players youbelieve in.We’re capturing the next generation of bettors — digital natives who prefer interactive, creator-driven experiences over traditional sports. Players’ Lounge turns every match and livestream into a high-stakes opportunity, merging gaming, streaming, and social wagering into one immersive ecosystem. | $3M / Seed / Mar 28, 2019 | ||
| Cleo is the only global, holistic family care platform supporting individuals throughout every life stage. Whether individuals are growing their family, raising children or teenagers, caring for an adult loved one, doing both as part of the growing Sandwich Generation, or taking care of their own health, Cleo provides life-changing care forfamilies and caregivers. This is achieved through advanced analytics, virtual coaching, proactive concierge support, and navigation to community resources and benefits — so families can be happier and healthier both at home and at work. Serving more than 200 clients, Cleo provides global, equitable, and inclusive support with Guides located in every region of the world. With a focus on driving family health outcomes, Cleo provides real-time risk assessment, virtual coaching and concierge support for over 40 evidence-based care journeys called LifePaths, including cancer care, neurodivergence, menopause, and self-care. Cleo is proven to improve mental health and decrease burnout for members — as guaranteed by The Validation Institute — all while maximizing cost savings, increasing productivity, reducing healthcare spend, and improving the health & wellbeing of the family unit.For more information, visit www.hicleo.com. | $27.5M / Series B / Mar 20, 2019 | ||
| See all 35 investments → | |||
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FAQ
What does Marissa Mayer invest in?
Marissa Mayer invests primarily in Internet, E-Commerce and SaaS startups, most often at Seed and Series A stage. Most of the 35 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Marissa Mayer's check size?
Marissa Mayer typically joins rounds of $1M–$5M at Seed, $6.3M–$25M at Series A and $5.5M–$28M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Marissa Mayer participates in.
How do I contact Marissa Mayer?
Public channels for Marissa Mayer include LinkedIn, X (Twitter) and Facebook. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Marissa Mayer last invest?
The most recent investment recorded for Marissa Mayer closed in Dec 2025. Shizune tracks 35 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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