# Alex Rainert

> Alex Rainert is a seed investor at The New York Times backing Mobile Advertising. See 2 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [The New York Times](https://shizune.co/investors/profile/newyorktimes)
- Location: New York, United States
- Total investments: 2
- Last investment: Jan 2012
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: http://www.linkedin.com/in/arainert
- X (Twitter): http://twitter.com/arainert
- Website: http://www.alexrainert.com

Alex Rainert is a founder of In 2009, he joined former Dodgeball co-founder Dennis Crowley's newstartup, Foursquare as head of product. In late 2013, he left Foursquare. In February 2014 he joined Project Florida as Head of Design.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Mobile Advertising | 2 | 100% |
| Private Social Networking | 2 | 100% |
| Apps | 1 | 50% |
| Guides | 1 | 50% |
| Content | 1 | 50% |

15 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 1 | 50% |
| Series A | 1 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Timehop | Timehop aggregates past content (photos, tweets, statuses, etc.) and presents it on a daily basis to users' mobile devices. It's an innovative way to recall your past in a way that ties it to the current calendar day. Timehop also offers Nimbus, a best-in-class mobile, in-app header bidding solution. | $1.1M | Seed | Jan 24, 2012 |  |
| Foursquare | Foursquare is a location technology platform offering business solutions and consumer products through a deep understanding of location.As a location intelligence company, Foursquare is comprised of two well-known consumer apps, Foursquare and Swarm, as well as thriving media and enterprise products. The platform leverages a deep understanding oflocation intelligence to unlock valuable insights about customers, enabling brands to understand and connect to targeted audiences as well as to measure foot traffic and advertising success. Its toolkit includes Foursquare Analytics; Placed powered by Foursquare; Pinpoint audiences; and Pilgrim SDK and Places API. Together, these products empower brands to analyze trends; measure foot traffic lift via multi-touch attribution; optimize advertising campaigns across hundreds of audiences; and drive deeper engagement via Foursquare’s industry-leading developer tools.Co-founders Dennis Crowley and Naveen Selvadurai established the company in New York, New York in 2009. | $1.4M | Series A | Sep 04, 2009 |  |

2 of 2 investments shown.

## Co-investors
- [Oreilly AlphaTech Ventures](https://shizune.co/investors/profile/oreilly-alphatech-ventures) — VC Fund, 2 deals together
- [SV Angel](https://shizune.co/investors/profile/sv-angel) — VC Fund, 1 deal together
- [Union Square Ventures](https://shizune.co/investors/profile/union-square-ventures) — VC Fund, 1 deal together

## About The New York Times

VC Fund · New York, United States

The New York Times creates, collects, and distributes news, information, and entertainment through a daily newspaper and a website.The New York Times has more than 50 websites and publishes 18 newspapers, including the The company previously owned The New York Times newspaper has won 98 Pulitzer Prizes, more than any other newspaper, and it is organized into sections: News, Opinions, Business, Arts, Science, Sports, Style, and Features. The New York Times website is rated as one of the most popular websites online, receiving over 14 million unique visitors in August 2008.The New York Times is headquartered in New York.

5 contacts available at The New York Times.

| Name | Title | Profile |
| --- | --- | --- |
| Alex Rainert | Head of Audio Product | https://shizune.co/investors/profile/alex-rainert |
| Doreen Toben | Member of the Board of Directors | https://shizune.co/investors/profile/doreen-a-toben |
| Jim Motavalli | Auto Blogger | https://shizune.co/investors/profile/jim-motavalli |
| Michael Young | Director of Machine Learning Engineering | https://shizune.co/investors/profile/michael-young-7 |
| Nicole Perlroth | Cybersecurity Reporter | https://shizune.co/investors/profile/nicole-perlroth |

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## FAQ

### What does Alex Rainert invest in?

Alex Rainert invests primarily in Mobile Advertising, Private Social Networking and Apps startups, most often at Seed and Series A stage. Most of the 2 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 Alex Rainert last invest?

The most recent investment recorded for Alex Rainert closed in Jan 2012. Shizune tracks 2 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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