# Mark E. Farrell

> Mark E. Farrell is a Series A investor at Thayer Investment Partners backing Software and SaaS. See 9 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Thayer Investment Partners](https://shizune.co/investors/profile/thayer-ventures)
- Location: San Francisco, United States
- Total investments: 9
- Last investment: Jul 2023
- Lead investor: 44%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/markfarrellsf/

Mark E. Farrell is a Series A investor at Thayer Investment Partners in San Francisco focused on Software and SaaS. Mark brings experience as both a finance and legal professional to Thayer Ventures. Most recently, Mark served for over five years as an investment banker at Thomas Weisel Partners, where he helped lead the Internet & Digital Media team and founded the firm’s Social Media practice. During his tenure, Mark advised clients on a number of notabletransactions, including the sale of Intermix (MySpace) to News Corp., and Google’s initial public offering. Mark was also chosen to lead the internal deal team during the Thomas Weisel Partners’ IPO, and served the dual role of lead underwriter and internal corporate development professional.Previously, Mark practiced law for three years at Wilson Sonsini Goodrich & Rosati where he represented venture capital firms and technology companies in private financings and M&A transactions.Mark received his B.A. from Loyola Marymount University, cum laude, M.A. from University College Dublin (Ireland), with honors, and J.D. from the University of Pennsylvania Law School, cum laude. Mark is currently an Advisor to Pacific Community Ventures and serves on the Penn Law School Alumni Society Board of Managers, as well as the Board of Directors for San Francisco Plan C and SAFE.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 3 | 33% |
| SaaS | 2 | 22% |
| Mobile | 2 | 22% |
| Recruiting | 2 | 22% |
| News | 1 | 11% |

25 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 4 | 44% |
| Seed | 2 | 22% |
| Series B | 1 | 11% |
| Funding Round | 1 | 11% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| RS21 | RS21 is a rapidly growing, global data-science and visualization company with offices in Albuquerque, NM and Washington, DC. We empower organizations to make data-driven decisions that positively impact the world through innovative solutions that are insightful, intuitive, inspiring, and intellectually honest. By providing data-driven insights thatachieve programmatic goals, improve efficiencies, reduce costs, and maximize productivity, we help clients navigate complex data issues in the fields of healthcare, population health, infrastructure resilience, disaster preparedness, supply chain management, and community safety. | $3M | Series A | Jul 11, 2023 |  |
| Swiftmile | Swiftmile builts smart parking and charging systems for light electric vehicles such as escooters, ebikes, trikes, etc. These can be for either shared or private-owned vehicles. Swiftmile place stations on public or private property. Swiftmile also has an outdoor digital display that can stream revenue-producing ads along with transit schedulesand PSA’s. | $5M | Series A | Jul 08, 2020 |  |
| Viridis Learning | Viridis is SaaS platform that matches skill deficiencies with local employer needs of middle skill talent. |  |  | Jun 07, 2017 |  |
| Viridis Learning | Viridis is SaaS platform that matches skill deficiencies with local employer needs of middle skill talent. | $4M | Series A | Aug 08, 2016 |  |
| Assured Labor | Assured Labor leverages mobile phones and the internet to connect employers with the best low-to-mid wage candidates in their area. The company's disruptive platform is optimized for the realities of the Emerging Markets where 3 of 4 Internet users access the web sporadically and nearly everyone has a cell phone. It fosters social and economicdevelopment by improving efficiency and transparency in labor markets around the world. With 500,000 candidates and 16,000 employers, the company's Latin American brands, EmpleoListo & TrabalhoJá, are growing rapidly in Mexico and Brazil.Assured Labor was established in 2008 and is based in New York, NY, United States. | $6.8M | Series B | Apr 17, 2015 |  |
| Viridis Learning | Viridis is SaaS platform that matches skill deficiencies with local employer needs of middle skill talent. |  | Seed | May 01, 2014 |  |
| Sphere | Sphere is pioneering how 360º content gets recorded, distributed, and viewed.The company has 20 pending patents that range from smartphone–based mapping and tracking techniques to bandwidth–sensitive streaming technology for 360º video. Sphere has licensed its software development kit to 60+ brands in 2012, including Samsung, Sony,HomeAway, Royal Caribbean Cruise Lines and Viator. The company is on track for its Sphere app to be pre-loaded on 67 million devices in 1Q14.Sphere is a team of 10, with most of their team comprised of engineers. Their offices are located in San Francisco, California. | $525K | Seed | Oct 01, 2013 |  |
| Sphere | Sphere is pioneering how 360º content gets recorded, distributed, and viewed.The company has 20 pending patents that range from smartphone–based mapping and tracking techniques to bandwidth–sensitive streaming technology for 360º video. Sphere has licensed its software development kit to 60+ brands in 2012, including Samsung, Sony,HomeAway, Royal Caribbean Cruise Lines and Viator. The company is on track for its Sphere app to be pre-loaded on 67 million devices in 1Q14.Sphere is a team of 10, with most of their team comprised of engineers. Their offices are located in San Francisco, California. | $1.8M | Seed | Dec 28, 2012 |  |
| Duetto | Duetto is hospitality’s only Revenue Strategy Platform. A powerful suite of cloud applications addresses the industry’s complexity in distribution and technology, providing solutions that increase booking conversion, efficiency, guest loyalty and revenue. The unique combination of hospitality experience and technology leadership drives Duetto tolook for new and innovative solutions to the industry’s greatest challenges. Duetto delivers software-as-a-service to hotels and casinos that leverage dynamic data sources and actionable insights into pricing and demand across the enterprise, enabling a holistic and more profitable Revenue Strategy. | $10.1M | Series A | Dec 11, 2012 |  |

9 of 9 investments shown.

## Co-investors
- [Acumen America](https://shizune.co/investors/profile/acumen-america-b7c1) — VC Fund, 1 deal together
- [Altimeter Capital](https://shizune.co/investors/profile/altimeter-capital) — VC Fund, 1 deal together
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund, 1 deal together
- [Future Perfect Ventures](https://shizune.co/investors/profile/future-perfect-ventures) — VC Fund, 1 deal together
- [Lumina Foundation](https://shizune.co/investors/profile/luminafoundation) — VC Fund, 1 deal together
- [Serious Change](https://shizune.co/investors/profile/serious-change) — VC Fund, 1 deal together

## About Thayer Investment Partners

VC Fund · San Francisco, United States

Thayer Ventures (Thayer) invests in technology companies with a focus on the travel industry. This industry represent more than $10 trillion in annual global economic activity, is thriving with entrepreneurial activity due to disruptive changes within the sector that began more than a decade ago. Recent consumer trends have accelerated thisdisruption for operators across the travel world, creating unprecedented opportunities for technology providers to make significant inroads into what was previously a closed market. Additionally, travel industry suppliers are dealing with massive shifts in travel planning, organizing and booking driven by the Internet and social media platforms. As a result, the travel industry is being forced to rapidly deploy new technologies in order to exploit the opportunities created by this shifting consumer behavior. The combination of these factors has created a unique environment for innovative technology providers to make significant inroads into this massive, growing, and evolving marketplace.

5 contacts available at Thayer Investment Partners.

| Name | Title | Profile |
| --- | --- | --- |
| Chris Hemmeter | Co-founder & Managing Director | https://shizune.co/investors/profile/chris-hemmeter |
| Katherine Grass | Venture Partner | https://shizune.co/investors/profile/katherine-grass |
| Mark E. Farrell | Managing Director | https://shizune.co/investors/profile/mark-e-farrell |
| Jeffery M. Jackson | Managing Director | https://shizune.co/investors/profile/jeff-jackson-3 |
| Leland Pillsbury | Managing Director | https://shizune.co/investors/profile/leland-pillsbury |

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## FAQ

### What does Mark E. Farrell invest in?

Mark E. Farrell invests primarily in Software, SaaS and Mobile startups, most often at Series A and Seed stage. Most of the 9 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Mark E. Farrell last invest?

The most recent investment recorded for Mark E. Farrell closed in Jul 2023. Shizune tracks 9 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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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