# Justin Rosenstein

> Justin Rosenstein is a seed investor backing SaaS and FinTech. See 13 investments, round sizes, portfolio and contact details. Updated Oct 2026.

- Type: Angel Investor
- Location: San Francisco, United States
- Total investments: 13
- Last investment: Mar 2026
- Lead investor: 0%
- Last updated: Oct 2026
- LinkedIn: https://www.linkedin.com/in/justinrosenstein
- X (Twitter): https://twitter.com/rosenstein
- Website: http://justinrosenstein.com
- Facebook: http://www.facebook.com/rosenstein

Justin Rosenstein is a co-founder of Asana along with Facebook co-founder Dustin Moskovitz. Asana’s software enables teamwork without email, and provides key communication infrastructure to companies like Airbnb, Foursquare, Pinterest, Twitter, and Uber. Asana’s mission is to help humanity thrive by enabling all teams to work together effortlessly.Justin has led the development of products that hundreds of millions of people use daily. At Facebook, he was the tech lead for projects including the Like button and Facebook Pages, and designed the in-house project management system that Facebook relies on to this day Facebook. At Google, he product-managed several projects in the communication/collaboration division, and created the initial prototype for Gmail Chat.Justin majored in Math and got part way through a Master’s in Computer Science at Stanford. He is also a serious student of yoga, meditation, and cats.

## Contacts

5 contacts available for Justin Rosenstein: work email, personal email, work phone, personal phone and socials. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-email/justin-rosenstein?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| SaaS | 2 | 15% |
| FinTech | 2 | 15% |
| Genetics | 2 | 15% |
| Software | 2 | 15% |
| Biotechnology | 2 | 15% |

41 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 5 | 38% |
| Angel | 3 | 23% |
| Series A | 2 | 15% |
| Pre-Seed | 1 | 8% |
| Series C | 1 | 8% |

6 stages tracked in total.

## Investments

| Company | Description | Round size | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| LittleBird | LittleBird develops an AI assistant that reads user screens to capture context and automate tasks. | $11M | Seed | Mar 23, 2026 | https://littlebird.ai/ |
| Vibely | Vibely empowers creators to lead vibrant communities, with intimate events, vibrant discussions, shared resources, and exciting challenges. | $2M | Seed | Nov 16, 2020 | http://www.vibely.io |
| OccamzRazor | OccamzRazor combines machine learning and first-in-class biological techniques to improve outcomes in drug discovery and development. Our analysis pipeline consists of two proprietary technologies, Panoramic AI and RazorBrain. Together, they are designed to extract data from unstructured text sources (publications, patient reported outcomes, etc.)and join them with structured data (genomics, proteomics, phenomics, etc.) to generate stronger drug discovery hypotheses and more valuable insights. Successful applications include data extraction and curation from biomedical text, novel target identification, and drug repurposing/repositioning. | $4.5M | Seed | May 01, 2019 | http://www.occamzrazor.com |
| Career Karma | Career Karma is the easiest way to find a job training program online. Over 1 million workers navigate their careers every month through advice and coaching.By offering free coaching and peer mentorship, Career Karma has grown to over 150,000 members from every background and profession.Through its directory of 9,000 boot camps and tradeschools, career switchers discover training programs by comparing courses and reading student reviews.The Career Karma mobile app makes your decision even easier. In the app, you can connect with current students and alumni to find your ideal program and get prepared for admission. | $437.5K | Pre-Seed | Mar 18, 2019 | https://careerkarma.com/ |
| Good Money | Good Money is a digital banking platform that provides banking and financial services that will be owned by its customers and will invest 50% of profits to actively protect the environment and fight for social justice. | $30M | Series A | Dec 10, 2018 | https://goodmoney.com/ |
| ONEDOME | ONEDOME is a location-based entertainment and immersive media company. It is the first AR-based multi-user mixed reality experience, and an immersive gallery featuring 15 interactive rooms curated from artists worldwide. ONEDOME was founded in 2017 and based in San Francisco, California. | $1.1M | Convertible Note | Aug 22, 2017 | http://www.onedome.global |
| Cabin | Cabin (www.ridecabin.com) is the first hospitality transportation company on a mission to make the most of every waking and sleeping moment. Cabin addresses America's "500 mile problem," in which regional travel up to 500 miles from home requires sacrificing an entire day, forcing people to take fewer trips without even knowing it.By consolidating both transportation and accommodation into one simple and delightful experience, Cabin’s one-of-a-kind moving hotel experience enables people to travel without travel time. The company is backed by some of the top investors in Silicon Valley including Founders Fund’s FF Angel, SV Angel, Floodgate, Box Group, Brainchild Holdings, Justin Rosenstein, StartX, FJ Labs, and 1517 Fund. | $3.3M | Seed | Jun 28, 2017 | https://www.ridecabin.com/ |
| Ligandal | Ligandal's mission is to create personalized gene therapies to cure disease. We are driving the discovery and delivery of a broad array of gene therapies, genetic materials, and gene-specific payloads with unprecedented precision at the cellular and sub-cellular level. Our ligand discovery engine allows for rapid design ofdiagnostically-responsive materials, capable of shuttling a variety of nucleic acid and protein payloads (including CRISPR and mRNA) to specific cell types. We are initially applying this technology to gene editing indications in hematology and immuno-oncology. | $330K | Angel | Aug 09, 2016 | http://www.ligandal.com |
| Ligandal | Ligandal's mission is to create precision delivery platform to cure and treat disease. We are driving the discovery and delivery of a broad array of gene therapies, genetic materials, and gene-specific payloads with unprecedented precision at the cellular and sub-cellular level. Our ligand discovery engine allows for rapid design ofdiagnostically-responsive materials, capable of shuttling a variety of nucleic acid and protein payloads (including CRISPR and mRNA) to specific cell types. We are initially applying this technology to indications in hematology, immuno-oncology, and infectious disease. | $330K | Angel | Aug 09, 2016 | http://www.ligandal.com |
| Asana | Asana is a computer software company that specializes in the fields of work management and productivity. It helps teams orchestrate their work, from small projects to strategic initiatives. Asana service is a web and mobile work management platform designed to help teams organize, track, and manage work. Teams can create projects, assign tasks, setdeadlines, and communicate directly . | $50M | Series C | Mar 30, 2016 | https://asana.com/ |

10 of 13 investments shown.

## Co-investors
- [Kauffman Fellows](https://shizune.co/investors/profile/kauffman-fellows) — VC Fund, 2 deals together
- [SV Angel](https://shizune.co/investors/profile/sv-angel) — VC Fund, 2 deals together
- [Techammer](https://shizune.co/investors/profile/techammer) — VC Fund, 2 deals together
- [Unshackled Ventures](https://shizune.co/investors/profile/unshackled-ventures) — VC Fund, 2 deals together
- [Y Combinator](https://shizune.co/investors/profile/y-combinator) — VC Fund, 2 deals together
- [Script Capital](https://shizune.co/investors/profile/122-west-ventures) — VC Fund, 1 deal together

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## FAQ

### What does Justin Rosenstein invest in?

Justin Rosenstein invests primarily in SaaS, FinTech and Genetics startups, most often at Seed and Angel stage. Most of the 13 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Justin Rosenstein?

Public channels for Justin Rosenstein include LinkedIn, X (Twitter) and the website linked on this profile. 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 Justin Rosenstein last invest?

The most recent investment recorded for Justin Rosenstein closed in Mar 2026. Shizune tracks 13 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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